hazardous waste treatment technologies
DESCRIPTION
This review emphasizes hazardous waste treatment technologies in general. Separate reviews on hazardous waste treatmenttechnologies relative to specific industries may be found elsewhere in this volume.TRANSCRIPT
Hazardous Waste Treatment TechnologiesAuthor(s): Byung J. Kim, Chai Sung Gee, John T. Bandy and Ching-San HuangSource: Research Journal of the Water Pollution Control Federation, Vol. 63, No. 4, 1991:Literature Review (Jun., 1991), pp. 501-509Published by: Water Environment FederationStable URL: http://www.jstor.org/stable/25044031 .
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Hazardous Wastes
Hazardous waste
treatment
technologies Byung J. Kim, Chai Sung Gee, John T. Bandy, Ching-San Huang
This review emphasizes hazardous waste treatment technol
ogies in general. Separate reviews on hazardous waste treatment
technologies relative to specific industries may be found else where in this volume.
BOOKS AND PROCEEDINGS
Major and Fitcho1 identified emerging hazardous waste treat ment technologies and provided evaluation of feasibility and cost of selected technologies. Freeman and Sferra2 edited a three volume reference summarizing innovative hazardous waste
treatment technologies. It included thermal processes (vol. 1),
physical/chemical processes (vol. 2), and biological processes
(vol. 3). Ma?anan3 published a hazardous waste chemistry text
book and included hazardous waste treatment technologies with reference to basic chemistry and toxicology. Lynman et al.4 pre
sented a methodology to evaluate the effectiveness of cleanup technologies at petroleum product contaminated sites, including a site assessment, selection of technologies, monitoring, and fol
low-up. Testa and Winegardener5 presented information on re
storing aquifers contaminated by petroleum products, including groundwater and soil treatment technologies. Noonan and
Curtis6 presented the petroleum-contaminated groundwater
treatment technologies including air stripping, granular activated
carbon, and biorestoration and costs data. ICF, Inc.7 prioritized
and discussed hazardous solvent waste management techniques.
The highest priority was minimization, followed by recycling, incineration, chemical and biological treatment, landfill, and
deep-well injection. Arozarena et al* provided general guidance on solidification/stabilization (S/S) technology, including back
ground, test methods, equipment, costs, and detailed description
of each S/S technology. Nunno9 identified international tech
nologies that could be used for hazardous waste remediation and treatment. Tedder and Pohland10 edited an American Chemical Society (ACS) symposium series book, which included
chapters on biological and chemical treatment of soils and sludges and solid immobilization. The U. S. Environmental Protection
Agency (EPA)11 summarized in situ treatment technologies for hazardous waste contaminated soils. The United Nations En
vironmental Program12 published guidelines for handling, treat
ment, and disposal of hazardous wastes.
Several proceedings from major conferences on hazardous
material and waste treatment were published during 1990. The
proceedings of the 44th Industrial Waste Conference13 at Purdue
University included many papers on hazardous waste treatment
technologies. At the 83rd Annual Meeting of the Air and Waste
Management Association,14 many papers on incineration tech
nology were presented. At the Solid/Liquid Separation Confer
ence,15 the 22nd Mid-Atlantic Industrial Waste Conference,16 and the Gulf Coast Hazardous Substance Research Center Con
ference,17 many papers were presented on hazardous waste re
mediation and S/S technologies. Proceedings from the following EPA-sponsored conferences
included many papers on hazardous waste treatment technol
ogies: the Second Forum on Innovative Hazardous Waste Treatment Technologies,18 the 15th and 16th Annual Hazardous
Waste Research Symposiums,19'20 and the A&WMA Interna tional Symposium.21 Proceedings from Department of Energy (DOE) sponsored conferences discussed hazardous waste treat
ment technologies, including the Mixed Waste Regulation Con
ference,22 the Annual Waste Management Symposium Working Towards a Clean Environment (16th),23 Incineration Conference
'90,24 Annual DOE Low Level Waste Management Conference,25
and Environmental Restoration and Waste Management
Workshop.26 At the Western Regional Symposium on Mining and Mineral Processing Wastes,27 the American Electroplaters and Surface Finishers Conference,28 and the National Petroleum Refiners Association Annual Meeting,29 many industrial haz ardous waste treatment technology related papers were presented.
GENERAL
Chambers et al.30 compiled state-of-the-art information on in
situ treatment technologies for hazardous waste, focusing on
contaminated soil, and provided extensive references. Pheiffer
et al.31 studied European technologies to treat contaminated soils,
including vacuum extraction, in situ washing, in situ steam
stripping, and land farming. Sims32 reviewed current issues, ap
proaches, and soil remediation technologies to identify deficien cies and recommend improvement at uncontrolled hazardous
waste sites. Young et al.33 presented nine case studies with in
novative technology process descriptions and performance and cost data at ongoing and completed Superfund sites. Technol
ogies included incineration of explosives and contaminated soils, air stripping, soil vacuum extraction, and soil flushing. An EPA
report34 to Congress summarized the progress in implementing the Superfund in the fiscal year 1988 and included an evaluation of newly developed feasible and achievable permanent treatment
technologies. Another EPA report35 to Congress summarized the progress, accomplishments, and results of the Superfund In
novative Technology Evaluation (SITE) Program through 1989. James36 pointed out that the demonstration and evaluation of a hazardous waste treatment technology should be conducted
with the purpose of characterizing performance, need for pre
and postprocessing of the waste feed, identification of waste type and constituents applicable to the technology, system through put, problems and limitations of the technology, and costs.
An EPA directive37 summarized the effectiveness of treatment
technologies for contaminated soil and debris and provided sup
port for decisions by the regions to use treatability variances for complying with the Resource Conservation and Recovery
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Hazardous Wastes_
Act (RCRA) land ban disposal restrictions. Loehr et al3% pre sented information on the quantitative evaluation of mobility and persistence of organic and inorganic waste constituents that
had accumulated over a long-term period in soil treatment sys
tems. The information was useful in the development of soil treatment closure decisions. Schomaker and Zunt39 explained
that technical guidance documents provided best documented available technology (BDAT) to meet the needs of RCRA and the Comprehensive Environmental Response, Compensation,
and Liability Act. The areas of research were related to cover
and liner systems, waste leaching and solidification, in situ treat
ment, S/S combustion, and BDAT. Ahlert and Kosson40 eval
uated dispersed and fixed-film aerobic and anaerobic systems,
flocculation/precipitation, ultrafiltration, and reverse osmosis on
a laboratory scale for treating high-strength hazardous waste site
and leachate. The resulting effluent could be polished by ultra
filtration, reverse osmosis, and ion exchange to meet the permit
standards. Lyman and Noonan41 presented a methodology to
effectively select contaminated soil at underground storage tank sites and evaluated five technologies: soil venting, biorestoration, soil flushing, hydraulic barrier, and excavation. Factors affecting implementation of each technology were presented. Fuhr and
des Rosiers42 described technical methods of degradation, de
struction, detoxification, and disposal of wastes containing chlo
rinated dibenzo-/xlioxins and dibenzofurans using incineration,
ultraviolet (UV) photolysis, and supercritical oxidation and pre sented actual field test data. Woodyard43 pointed out that recent
polychlorinated biphenyl (PCB) treatment focused on mobile or in situ application resulting in unacceptable liability for the
generators and evaluated soil remediation technologies including thermal, chemical, and biological treatment and physical sep
aration. Maunsell44 pointed out that landfill capacity is a critical
resource in the hazardous waste industries in Australia. Man
agement trends include allowing more sewer discharge, creating
and enforcing more stringent regulations, and performing more
treatment. Reviewed treatment technologies included inciner
ation and other new technologies. Corbett45 described how re
fineries and petrochemical industries have been changing the
way hazardous wastes are managed. Technologies of concern
included dewatering oily sludge, on-site incineration to meet
BDAT standards, selective catalytic and noncatalytic NOx re
duction systems, and catalyst-recycling technology. The Canada
Center for Mineral and Energy Technology46 studied mineral
industry sludge treatment technologies. Treatment alternatives
included sludge dewatering, effluent treatment by ion exchange with subsequent metal recovery, and reprocessing of sludges ei
ther on-site by the use of solvent extraction or in mineral industry smelters or refineries. Talion et al47 examined the technologies
that treat gas industry wastes and remediation sites. Candidate
technologies were evaluated for their specific applications and available performance and cost data were compiled on a com
puter database system.
EPA published a 24-volume final BDAT background document48; a 19-volume BDAT background document, treat
ment standards, an amendment to the final BDAT background document49; and a 19-volume final response to BDAT-related
comments document.50 The background documents provided the U. S. EPA with technical support and rationale for the de
velopment of treatment standards for the constituents to be reg
ulated.
BIOLOGICAL TREATMENT
Safferman and Bhattacharya51 investigated the treatability and fate of 28 organic RCRA compounds in a combined organic removal and nitrification process and by secondary effluent
gravity filtration. At a total concentration of 1.5 mg/L of organics in the aeration basin, most of the compounds were removed to
below the detectable limit by secondary treatment. Bhattacharya et al.52 compared two pilot-scale activated sludge plant perfor
mances. One was operated with distributed RCRA compound loading and the other one with spiked loading. The selected
compounds did not cause any adverse effects on chemical oxygen
demand (COD) and suspended solid removals. Chlorinated ali
phatic solvents were volatilized and aromatic volatile benzenes
were degraded. Dieneman et al.53 used serial anaerobic/aerobic
packed bed reactor to biodegrade organic contaminants in leachate from a Superfund site, resulting in 80 to 90% priority
pollutant removal. Mass balances for the anaerobic and aerobic
subsystems were attempted.
Kuhn and Suflita54 examined the anaerobic biod?gradation of nitrogen-substituted and sulfonated benzene contaminants
by aquifer microorganisms. The results indicated which hazard
ous waste constituents persisted and which favored anaerobic
biotransformation. Trattner and Lawson55 reviewed the biolog
ical technologies for hazardous waste treatment including land
composting, aerobic treatment, and anaerobic biod?gradation.
Hazardous wastes included PCB, trichloroethylene (TCE), poly nuclear aromatic hydrocarbon (PAH), pentachlorophenol (PCP), aniline, and chlorophenol. Cheremisinoff56 presented an over
view of biological treatment and detoxification of water and wastewater. Efficient systems included aerobic and anaerobic
fluidized bed and membrane biological reactor.
Steegmans and Brunswig57 examined removal efficiencies of
COD, biochemical oxygen demand, and organics halogenated from waste disposal site leachate using an adsorption resin fol
lowed by a biological treatment. Brenner et al5* investigated
the feasibility of using the sequencing batch reactor (SBR) as a
key component of treating contaminated soil and leachates. The
SBRs removed most of soil and leachate constituents while pro
ducing cyanide-resisting bacteria. Darnall and Hosea59 success
fully conducted laboratory tests and on-site pilot-scale demon
stration of AlgaSORB technology for the removal and recovery of mercury-contaminated groundwater under the U. S. EPA's
SITE program. The appendices to the report included the lab
oratory results of AlgaSORB technology demonstration.
Zitrides60 discussed three general bioremediation techniques: biostimulation for contaminated groundwater and soils, bioslurry for sludges and highly contaminated soils, and biofarming for
lightly contaminated soils. Golueke and Diaz61 discussed ad
vantages, disadvantages, and technologies for two approaches
to enriching degradation of toxic wastes: mass inoculation of
organisms and biostimulation to encourage these microorgan
isms. Sims et al62 discussed an in situ and prepared bed system using natural microorganisms to treat contaminated soils. System
development steps were discussed: site/soil/waste characteriza
tion, treatability studies, and design and implementation of the
bioremediation plan. Finlayson63 pointed out that the practicality of bioremediation of waste is based on its speed and cost effec
tiveness. Bewley et al}4 argued that biological treatment of con
taminated soil offers a workable and responsible alternative and
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Hazardous Wastes
described a successful project in detail. April et al65 evaluated in situ soil bioremediation processes, including degradation and
detoxification, for wood-preserving, petroleum-refining wastes
at high concentrations in an acclimated soil. The soil solid phase, water soluble fraction of soil, and column leachates were eval
uated.
Topp and Hanson66 examined soil slurries to analyze the ef
fects of soil type, supplementation with carbon or inorganic nu
trients, creosote, and copper/chromate/arsenate mixtures on vi
ability and PCP degradation by inoculant of flavobacterium sp.
Wang et al61 examined the effectiveness of biostimulation to treat diesel oil contaminated soils. The contaminated soil ap
proached the background level of uncontaminated soil after 12 weeks of bioremediation. Lewandowski et al.6* explored various
nutrient media and reactor configurations to effectively treat hazardous wastes by white rot fungus. Preliminary results in
dicated that immobilization improves the biod?gradation rate
substantially. Lamar and Dietrich69 studied the ability of white rot fungus to remove PCP from soil. A PCP removal efficiency of 88-91% was achieved in 6.5 weeks converting most of PCPs to nonextractable soil-bound products. Sharp-Hansen70 inves
tigated organic air pollutant emission from bioremediation pro cesses and identified and evaluated air emission models for each
bioremediation process.
CHEMICAL AND PHYSICAL TREATMENT
A fact sheet from the U. S. EPA71 provided the technology description of Glycolate dehalogenation as being a potentially effective technology in detoxifying specific types of aromatic or
ganic contaminants, particularly dioxins and PCBs. Tiernan et
al.72-73 studied the various operating parameters of dehaloge
nation by using KPEG-potassium hydroxide and polyethylene
glycol: duration of treatment; temperature; the presence of water,
volatile materials, and carbon matrix; and the quantity of reagent.
Dechlorination of polychlorinated dibenzo-p-dioxin (PCDD) and
polychlorinated dibenzofuran (PCDF) sorbed on activated car
bon was also discussed. Barkley74 reported a pilot-scale study
for the efficacy of PCB removal from concrete surface by using alkali metal/PEG mixture. He also tried a shotblasting technique in which contaminated concrete surface was cut away. Jones75
compiled the possible mechanisms of interference between par ticular waste components and commercially available waste
binding systems through literature review and available infor
mation on Portland cement and pozzolan chemistry. He also
addressed the effects of admixtures and the effect of typical or
ganic waste components on the treated product. Suprenant et
al.76 observed that treatment of oil-contaminated soil by mixing
cementitious materials limited the solubility of the hazardous
constituents, decreased the surface area exposed to the environ
ment, and improved the handling characteristics. The pH in
crease, in the range of 9-11, by the addition of cement and fly ash, immobilized most multivalent cations as insoluble hydrox ides.
Soundararajan et al77 conducted research on S/S employing modified organophilic clay binder to chemically stabilize organic contaminants. The evaluation using leaching and extraction
showed chemical bonding between the clay and the waste and
retention of organic compounds. Barth78,79 reported on the
CHEMFIX S/S process as a SITE demonstration project. The
process was applied on a hazardous waste site containing lead,
copper, and PCBs. Substantial reduction of leachable lead and
copper was achieved as tested by TCLP protocol by the U. S. EPA. Physical testing results indicated durability in exposed conditions. Grube80"82 described Soliditech technology, which was another stabilization process demonstrated through the SITE
program at a Superfund site in New Jersey. PCBs, lead, oil, and
grease were the target contaminants. Three types of waste-con
taminated soil, waste filter cake material and oily sludge and sand were treated. Physical stability was high and contaminant
leaching was low. Proprietary mixing reagent and additives were
used. Sawyer83"85 reported that S/S, by combining two compa
nies' technologies (one for mixing additive and the other for
deep-soil-mixing equipment), was demonstrated for waste on
site cleanup. The conclusions were that immobilization of PCBs was likely, heavy metals could be immobilized, volatile organic chemicals (VOCs) could be reduced to a lower concentration, and a small volume increase on the order of magnitude of 5
10% was expected. Razzell86 reported a field experience of fix ation of pesticide, paints or organic solvents, and waste oils by
fly ash and cement kiln dust. Fixation was performed in cells
dug in solid clay. Spence et al}7 undertook a study to answer the question of the fate of VOCs in the process of S/S, which
was an exothermic cementitious reaction that would vaporize
the VOC. They used lightly contaminated groundwater for the mass balance, and it indicated that more than 50% was retained
in the S/S sample. Stagemann and Cote88 summarized the test methods for so
lidified waste evaluation. Seven physical tests, five leachate tests, and four micromorphological characterization methods were
applied to solidified products. Bostick et al%9 treated mixed, technetium, and chemically hazardous waste by conventional
cement-based grout. The S/S was effective for hydrolyzable met
als?lead, cadmium, uranium, and nickel?but not for retention
of radioactive Tc-99. The addition of ground blast furnace slag to the grout was shown to reduce the leachability of technetium
by several orders of magnitude. Kalb et al90,91 reported a com
parison of encapsulation of mixed waste in modified sulfur ce
ment and hydraulic cement. They found that the sulfur cement
achieved greater waste loading because of its thermoplastic property. Van Beek and Wodrich92 reported the grout treatment
facility for processing liquid radioactive and hazardous tank wastes into a cement-based solid designed by Westinghouse Hanford Co. to dispose of 227 000 m3 of grouted mixed waste.
The report by DiLiberto93 dealt with defense liquid tank waste at Hanford Site nuclear fuel reprocessing. The waste would be
separated into high-level, transuranic, and low-level fractions
and then vitrified or immobilized in grout. Eckert et al.94 pre sented the chemical kinetics of supercritical water oxidation and
the detailed design procedure of a mobile unit. The design con
sisted of four tasks: a flow sheet, material and energy balances,
size and costs of major equipment, and associated costs. The
system was shown to be cost effective and maintained steady
operation conditions for a wide range of feed concentrations.
Hall et al95 presented an overview of solvent extraction treat
ment technologies including those in the development stage as
well as field-applied systems. Those introduced were the CF sys
tem, New York University's LEEP (low energy extraction pro
cess), BP Oil's system, Resource Conservation Company's BEST
(basic extractive sludge treatment), Envirite Field Services' Ac
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Hazardous Wastes_
curex process, and Sanexen International's Extraksol process.
Valentinetti96"98 reported on the SITE demonstration project by CF system for organic extraction. The process used liquefied propane successfully to extract PCBs from contaminated sedi ments. Sudell99 conducted a test to determine the suitability of the BEST process for application as a spill and waste site cleanup.
The process separated oily sludges into their components: oil,
water fraction, and solids. Raghavan et al 10?
reviewed the clean
ing of excavated soil using extraction agents: water washing aug
mented with a basic or surfactant agent, water washing with an
acidic or chelating agent, organic-solvent washing, and air or
stream stripping. Technical feasibility of the technique with na
tional priority list sites was mentioned. Hutzler et alm presented a soil vapor extraction as a cost-effective technique for VOC
removal from contaminated soil. They discussed the factors and
components of the system and claimed that the design and op eration of the system was flexible enough to allow for rapid changes in operation, which will optimize contaminant removal.
Arri?la et al102 studied in situ treatment of arsenic contam
inated soil. They found the possibility of adding amorphous ion oxide to stabilize arsenic and adding ferrous sulfate to reduce
the solubility of arsenic. Porras103 presented the recycling of virgin petroleum product contaminated soils as the aggregate com
ponent of conventional asphalt products. Lewis et al.104 and
Welshans and Topudurti105 reported a SITE program employing the UV/oxidation technology. The efficiency of the process for
VOC removal was greater than 90% by chemical oxidation, but for a few VOCs stripping, also contributed toward removal. Lewis et al106 also evaluated the UV/oxidation technology at a site of contaminated groundwater. Employing hydraulic retention time of 40 minutes, an ozone dose of 110 mg/L, hydrogen peroxide dose of 13 mg/L, and 24 U V lamps (intensity of the lamp was not given), the groundwater met the discharge standards for dis
posal into a receiving waterway. Buckley et al.107 evaluated ul
trafiltration for dissolved heavy metals after polyelectrolyte treatment under SITE program. The result showed the separation
of soluble heavy metal ions?cadmium, lead, and mercury in
the presence of toluene.
Williams et al108 examined reverse-osmosis (RO) membranes
for the concentration and separation of selected chlorophenols
and chloroethanes with and without feed preozonation. The
separation of dilute organics by composite polyamide membrane was shown to be effective with improvement by preozonation.
Walker et al.m presented the RO system employed to reduce chromium in the effluent from a plating facility. The full-scale
RO/evaporator system resulted in a substantial reduction of the
quantity of chromium exiting the facility. Cole and Fields1,0 reviewed in situ vitrification (ISV) system, including a basic de
scription of system components. Campbell and Buelt111 simu
lated ISV of an underground steel tank containing hazardous material by using a 30-cm diameter buried steel and concrete
tank containing tank sludge. The steel tank was converted to
ingots and the concrete walls were dissolved into the resulting glass and crystalline block. Campbell et al112 performed ISV tests on soils spiked with heavy metal and organic compounds as well as radioactive simulants. Tests showed successful binding
of hazardous and radioactive simulants in the vitrified product and nearly complete destruction of the organics. Farnsworth et
?/.113114 conducted a bench-scale ISV test to demonstrate the
potential of electrode feeding in soils with a high concentration
of metals and crucible melts test to evaluate the effect of various chemical additives on soil-melting temperature and other char
acteristics. Five metals from the EP toxicity list of various VOCs
including CC14, TCE, PCE, and asbestos were included in ISV tests.
Timmerman and Peterson115 tested pilot-scale ISV for soil contaminated with fuel oils and heavy metals from fire-training exercise. They demonstrated the destruction of organics and the
retention of inorganics in the vitrified product. Off-gas treatment
systems were also addressed. Timmons et al.116 tried ISV on
waste contaminated with high levels of mercury and arsenic and
low levels of aldrin and dieldrin. The destruction and volatil ization of contaminants were continuously monitored, and the
results were discussed. Treatment technologies for wastes from
metal-finishing operations were discussed by PEI Associate, Inc.,117 including alkaline chlorination, wet-air oxidation, UV/
ozonation, electrolytic oxidation, S/S, and precipitation. Con
clusions were presented regarding the effectiveness of the various
technologies for selected electroplating and metal-finishing wastes. Eyal et al.11* reported a new technique, called SEPROS,
for treating acid-containing industrial waste streams. It was re
ported that the technology is especially valuable in the treatment of waste streams from titanium dioxide industry, pickling liquors, and bleed streams from electrolytic zinc plants. Leak119 designed a precipitation and clarification system that could be used by small radiator repair shops. The system was targeted to reduce
the most commonly used hot caustic solution to clean a radiator
contaminated with dissolved lead, zinc, copper, and tin in ad
dition to dirt, rust, paint flakes, and other particles. Crim and Brown120 conducted chemical treatment process options for ex
plosive-contaminated soils. The process was also included in an
economic feasibility analysis. The options were caustic hydro
lysis/peroxidation, shock plasma, microwave/hydrolysis/oxi
dation, microwave/sonic/hydrolysis/oxidation, nitric acid/heat,
and supercritical fluids. Piccinno et al.121 introduced wet air oxidation (WAO) at re
duced operating conditions?atmospheric pressure and boiling
temperature?by using metallic catalyst and hydrogen peroxide.
WAO was applied to conventional wastewater containing toxic
organic compounds to verify the feasibility. Hu et al.122 studied and mathematically modeled an affinity dialysis process for
wastewater treatment for the recovery of useful metals and the
removal of toxic metals. The technique involved a solution of macromolecular agent (polymer) that rapidly complexed metal
ions. Operation and the polymer solution regeneration was dis
cussed. Osteen and Bibler123 reported an ion-exchange resin for
the removal of dissolved mercury from Savannah River Labo
ratory. A polystyrene/divinylbenzene with thiol functional
groups, Duolite GT-73, was shown effective in mercury removal.
Stanley124 discussed a plasma reactor in which gases are ionized
by passing through an electric field strong enough to strip elec trons from the molecules of the gas for hazardous waste decon
tamination. The potential and advantages of the reactor were
also included. Lovo et al125 presented a mathematical model of
the deep well reactor for hazardous waste oxidation that described the behavior when it is operated in the subcritical region. Varma et al.126 reported microwave-assisted fluid-bed oxidation to treat
TCE, which they found to be significantly more efficient than
conventional oxidation. The oxidation products were also more
oxidated species than products of conventional oxidation.
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_^____^___Hazardous Wastes
Alpert et al127 reported solar detoxification of hazardous wastes: a low-temperature photocatalytic process and a high
temperature thermal/chemical process that destroys organic
compounds by steam reforming over a metal catalyst. Skocypec
and Hogan128 described a direct catalytic absorption reactor that absorbs solar energy for hazardous waste destruction. A nu
merical model for destruction of TCE was presented. Tseng and
Huang129 presented photocatalytic oxidation, using titanium oxide and UV light, of phenol in aqueous solution. Parameters
studied were oxygen, temperature, pH, concentrations of pho
tocatalysts, and phenol. York and Aamodt130 introduced heap
leach mining technology conducted by Los Alamos National
Laboratory, which was a process that could treat hazardous
chemical and radioactive wastes that will chemically, physically, or biologically react with selected reagents. Machin and
Ehresmann131 reported a fire that created asbestos-containing
waste and its treatment with sulfate and alkalinity amendment
agents. Loehr et al.132 discussed an important topic of the mo
bility and degradation of residue at hazardous waste land treat
ment sites at closure. The report presented information pertain
ing to the quantitative evaluation of mobility and persistence of
organic and inorganic waste constituents under various closure
scenarios that could be useful in the development of soil treat
ment closure decisions.
THERMAL TREATMENT
Tillman et al133 gave a comprehensive description of a rotary
kiln as a hazardous solid waste incinerator. Hall134 described
rotary kiln incineration of specific wastes, creosote, and penta
chlorophenol wood preservative sludge. Waterland et al135 and
Fournier et a/.136137 studied the fate of metals in a rotary kiln
incinerator with pilot-scale tests. The effect of chlorine in the feed was also addressed. Stumbar et al13* reported the field demonstration activities of the U. S. EPA's Mobile Incineration
System. It included trial burn of RCRA and Toxic Substance
Control Act (TSCA) wastes, accomplishments, problems en
countered, and solutions implemented. Canadian Council of
Ministers of the Environment139 published guidelines for mobile PCB destruction systems, including generic technologies of high temperature incineration (rotary kiln, liquid injection) and other
thermal degradation techniques (pyrolysis, thermal radiation, and plasma arc). Corry and Rasmussen140 examined incineration
as an alternative to dispose of refinery biotreatment sludge on
land as the U. S. EPA had banned land treatment. Fluidized
bed incinerators were found effective in eliminating hazardous
organic constituents and disposing of inorganic metals.
Dellinger et al141 described research results regarding the minimization and control of hazardous combustion byproducts from operations in which hazardous waste is thermally destroyed.
Kissel142 critiqued the proposed cofiring of municipal refuse and
PCBs at Bloomington, Ind., contaminated by past industrial ac
tivities. He also discussed the technological viability, costs, scope,
and local control of cleanup operations. Peters et al143 presented
a treatise on the implications for destruction of toxicants and
PIC generation. Secondary reactions of newly formed volatiles
that can contribute to desired and undesired effects were dis
cussed. They showed that incinerator design, operation, and
performance monitoring will benefit from better quantitative
understanding of devolatilization (pyrolysis) related phenomena.
Sethi and Biswas144 made an effort to model the formation and
dynamics of metallic particles in a flame incinerator. Silcox and
Pershing145 studied incineration of hazardous waste by using a
mathematical model of heat transfer in a directly fired rotary kiln. The moisture level of the feed was predicted to be a key operating parameter. Tsang146 described the temporal behavior
of chloroaromatics during pyrolytic decomposition by using fundamental chemical kinetics of OH radicals and H-atoms.
Altwicker147 proposed a global kinetic model of the formation of PCDD and PCDF in incinerators in terms of homogeneous and heterogeneous mechanisms. Also discussed were the quan
tities of these pollutants and the low-temperature, surface-cat
alyzed reactions relevant to the formation of PCDD and PCDF. Bruce et al148 proposed a scheme for controlling the formation of PCDD/PCDF during incineration by using sorbent materials to remove the source of chlorine. Helsel et al149 performed an
experimental remediation of the contaminated soil at manufac
tured gas plants (MGP) by thermal desorption treatment tech
nology. Treatment conditions?temperature, residence time, and
soil type?and total PAH concentrations were examined. Lighty et al150 investigated the rate-limiting steps in the desorption of contaminants from MGP site soils and found that temperature
was the most important parameter. Lighty et al151 also presented
a research effort of thermal desorption of contaminants from soils. They studied intra- and interparticle phenomena and sug
gested that local thermal environment and gas-phase contami
nant concentration were the most important process variables.
Taylor et al152 developed a thermal stability based ranking of hazardous organic compound incinerability by evaluating the
temperatures for 99% decomposition of organic compounds.
Thurnau153 also devised an incinerability index to measure
performance of an incinerator by using principal organic haz
ardous components and varying temperature and oxygen con
centrations. Lemieux et al.154 developed a simple indicator?
unsaturated oxygen demand?for measuring the performance
of thermal devices burning hazardous waste. They discussed the
advantages, such as uniform and easy-to-measure, of this simple
indicator compared with the currently used destruction and re
moval efficiency. Fournier et al155 performed a test for thermal
destruction of chemical warfare munitions residue remaining
on the metal parts using a metal parts furnace. Ragaini156 dis
cussed mixed radioactive and hazardous waste incineration and
the destruction of chemical munitions in conjunction with the
land disposal restrictions by U. S. EPA. He observed that the
choice of treatment technology was a regulatory one. Dempsey
and Thurnau157 tested incineration of wastes from specific sources, specifically the K-wastes in RCRA regulations, using a
rotary kiln system to develop standards of BDAT. The pilot scale testing of four wastes showed no detectable amounts of
principle organic hazardous constituents in either the kiln ash or scrubber blowdown. Tabery and Dangtran158 discussed a dis
posal of waste from the smelting of aluminum. Alternative to
land disposal was incineration using fluidized bed combustion
showing competitiveness for a 20 000 ton/yr plant. Uberoi and Shadman159 presented the chemical equilibrium
of lead in chlorine-containing waste incineration and suggested
passing the lead-laden flue gas through a fixed bed of an appro
priate sorbent to remove lead compounds. Elliot et al 16? defined
the conditions and steps required to completely incinerate ex
haust gas of arsine and phosphine from the semiconductor in
June 1991 505
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Hazardous Wastes
dustry. Ross and Deitz161 introduced the Whetlerite ads?rbate, charcoals impregnated with metals and used for retention of toxic airborne chemicals. They presented the thermal desorption and tandem mass spectrometry of the adsorbates. Chopey162 de
scribed oxygen combustion processes for organic wastes devel
oped by Union Carbide that could be used at Superfund sites. Davis and Miranda163 introduced Texaco Petroleum's entrained
bed gasifier to generate usable gas from hazardous waste. The
slag was classified as nonhazardous, and the synthesized gas was
used for hydrogen production or electric power generation.
Holloway164 evaluated the Marine Shale Processors' (MSP) rotary kiln system for hazardous waste combustion, and Rukavina165
reported on the MSP as a recycling processor that produces a
glass-like construction aggregate from waste combustion. The
Solar Energy Research Institute166167 published a solar thermal
program summary in which solar thermal technology for the destruction of hazardous waste was discussed.
Byung J. Kim, Chai Sung Gee, and John T. Bandy are with the U. S. Army Construction Engineering Research Laboratory.
Ching-San Huang is with the U. S. Army Environmental Hygiene Agency. Correspondence should be addressed to Dr. Byung Kim, USACERL, P.O. Box 4005, Champaign, IL 61824-4005.
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