Effects of micro-nano and non micro-nano MSWI ashes addition on MSW anaerobic digestion

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  • oechnih R

    Anaerobic digestion

    igattto-nanuldbi

    3.5

    able for the MSW anaerobic digestion particularly found in the micro-nano added bioreactors. 2012 Elsevier Ltd. All rights reserved.

    been meated bn in Tae potene it als

    the MSW anaerobic digestion (Lo et al., 2009). However, benecialfacilitation of MSW biodegradation by ash addition was still notwell understood. Similar investigations were also reported thatmetals of different levels might stimulate or inhibit the organicsubstrate anaerobic digestion and fermentation process (Fermosoet al., 2009; Chen et al., 2008; Yuan et al., 2009; Tan et al., 2009;Altas, 2009; Li and Fang, 2007; Lin and Shei, 2008; Yue et al.,

    activated sludge anaerobic digestion. Nano-TiO2, nano-Al2O3 andnano-SiO2 in doses up to 150 milligram per gram total suspendedsolids (mg g1-TSS) showed no inhibitory effect, whereas nano-ZnO showed inhibitory effect with its dosages increased. The meth-ane generation was the same as that in the control when in thepresence of 6 mg g1-TSS of nano-ZnO, however, which decreasedrespectively to 77.2% and 18.9% of the control at 30 and150 mg g1-TSS. The released Zn2+ from nano-ZnO was an impor-tant reason for its inhibitory effect on methane generation. Luna-delRisco et al. (2011) found that particle size of CuO and ZnO could

    Corresponding author. Tel.: +886 4 23323000x4469; fax: +886 4 23742365.

    Bioresource Technology 114 (2012) 9094

    Contents lists available at

    T

    elsE-mail address: hmlo@cyut.edu.tw (H.M. Lo).such as bottom ash (BA) and y ash (FA). MSWI BA and FA were re-ported to contain various metals and recalcitrant organic com-pounds such as polycyclic aromatic hydrocarbons (PAHs) andpolychlorinated dibenzodioxins/furans (PCDD/Fs). Both BA and FAcould be used as aggregate, backll, soil amendment and cementadditives after careful pretreatment, toxicity and TCLP test (Linand Chen, 2006).

    Studies on BA or FA on co-disposal or co-digestion with MSWwere few (Lo et al., 2010, 2009; Lo and Liao, 2007; Boni et al.,2007). MSWI BA and FA addition might release various metals lev-els resulting to the potentially benecial or detrimental effects on

    by microorganisms were also reported (Wyrzykowska et al., 2009;Lin et al., 2008; Yasuhara and Katami, 2007; Wang et al., 2010;Ham et al., 2008; Liu et al., 2008; Nam et al., 2005; Shitamuraet al., 2005; Oleszczuk, 2009).

    Nanotechnology has been evolved to be an attractive option inengineering and environmental science. Mu and Chen (2011) hasreported that the presence of 1 mg g1-TSS of ZnO nanoparticles(NPs) did not affect methane production of waste activated sludge,but 30 and 150 mg g1-TSS of ZnO NPs induced 18.3% and 75.1% ofinhibition, respectively. Mu et al. (2011) has also investigated themetal oxide nanoparticles (TiO2, Al2O3, SiO2 and ZnO) on wasteMicro-nano scaleMetals

    1. Introduction

    Municipal solid waste (MSW) hasincinerator (MSWI) while partly trrecovery, composting and gasicatioreduce the MSW volume and have thet of the steam and electricity whil0960-8524/$ - see front matter 2012 Elsevier Ltd. Ahttp://dx.doi.org/10.1016/j.biortech.2012.03.002ainly treated by MSWy landlling, resourceiwan. The MSWI couldtial co-generation ben-o produces the residues

    2007; Kuo and Genthner, 1996; Gikas, 2007; Kida et al., 2001;Ma et al., 2009; Worm et al. 2009). Recently, Lo et al. (2012) haveincorporated the above research and reported the new results thatsuitable levels of several individual metals could enhance the MSWanaerobic digestion. On the other hand, PAHs and PCDD/Fs ofMSWI ashes and their release were investigated by severalresearchers and their adsorption by adsorbents and biodegradationMSWMSWI ashes

    had the higher biogas production than the corresponding non micro-nano MSWI FA and BA added ones.Suitable MSWI ashes addition could improve the biogas production due to the released metals levels suit-Effects of micro-nano and non micro-nananaerobic digestion

    H.M. Lo a,, H.Y. Chiu a, S.W. Lo a, F.C. Lo baDepartment of Environmental Engineering and Management, Chaoyang University of TbDepartment of Occupational Safety and Health, China Medical University, 91 Hsueh-Sh

    a r t i c l e i n f o

    Article history:Received 3 December 2011Received in revised form 29 February 2012Accepted 2 March 2012Available online 9 March 2012

    Keywords:

    a b s t r a c t

    This study aims at invest(MSWI) y ash (FA) and bomicro-nano and non micro36, 60 and 120 g g1 VS) cofound to have the highest(193 mL g1 VS MSW,

    Bioresource

    journal homepage: www.ll rights reserved.MSWI ashes addition on MSW

    ology, 168, Gifeng E. Rd., Wufeng District, Taichung 41349, Taiwan, ROCd., Taichung 40402, Taiwan, ROC

    ing the effects of micro-nano municipal solid waste (MSW) incineratorm ash (BA) on the MSW anaerobic digestion. Results showed that suitableo MSWI ashes addition (FA/MSW 3, 6, 18 and 30 g g1 VS and BA/MSW 12,enhance the biogas production compared to the control. It was particularlyogas production at the micro-nano MSWI BA/MSW ratio of 36 g g1 VStimes to the control). Micro-nano MSWI FA and BA added bioreactors

    SciVerse ScienceDirect

    echnology

    evier .com/locate /bior tech

  • 1061110 and 111010000 nm after one day settlement respec-tively. As to micro-nano MSWI BA, Figure S-5B showed that parti-

    Taiw

    )

    Cd (mg g1) 0.10 0.05 0.01 0.00

    Techaffect the cattle manure anaerobic digestion. Biogas productionwas severely affected at concentrations of bulk and nanoparticlesover 120 and 15 mg L1 for CuO and 240 and 120 mg L1 for ZnO,respectively. EC50 concentrations for methane inhibition were esti-mated to be 129 mg Cu L1 for bulk CuO, 10.7 mg Cu L1 for nanoCuO, 101 mg Zn L1 for bulk ZnO and 57.4 mg Zn L1 for nano ZnO.

    So far the investigations using BA or FA (containing metal oxi-des and other compounds) for co-digestion or co-disposal withMSW have rarely undertaken (Lo et al., 2009; Lo and Liao, 2007;Boni et al., 2007). Using metal oxides for co-digestion with organicsubstrate are also few. Only some anaerobic digestion of sludgeand manure with metal oxide addition were reported (Mu and

    Cr (mg g1) 0.28 0.04 0.11 0.02Cu (mg g1) 0.12 0.03 0.20 0.04Ni (mg g1) 0.07 0.00 0.06 0.00Pb (mg g1) 2.53 0.10 0.07 0.00Zn (mg g1) 5.16 0.35 1.34 0.12Table 1Elemental values and carbon to nitrogen ratios between synthetic, Taichung city and

    Analyzed items C (%) H (%) O (%) N (%

    Synthetic MSW 46 6 41 1.4Taichung city MSW 20.55 3.06 18.53 0.50Taiwan MSW 17.38 0.47

    Table 2Basic characteristics of organic MSW and anaerobic sludge seeding.

    Organic MSW Anaerobic sludge seeding

    pH 7.90 0.22 6.86 0.09ORP (mV) 72.70 4.52 17.25 1.34EC (mS/cm) 0.34 0.01 1.96 0.05TS (%) 5.59 0.19 2.78 0.39VS (%) 3.96 0.34 0.74 0.40Ca (mg g1) 110.03 0.30 12.99 0.55Mg (mg g1) 7.84 0.13 2.25 0.15K (mg g1) 65.31 0.01 2.20 0.07Na (mg g1) 14.98 0.80 0.69 0.03

    H.M. Lo et al. / BioresourceChen, 2011; Mu et al., 2011; Luna-delRisco et al., 2011).This work investigated the effects of various dose of micro-nano

    and non micro-nano MSWI FA and BA on the anaerobic co-diges-tion of MSW and MSWI ashes that might provide the useful infor-mation for the MSW anaerobic digestion.

    2. Methods

    2.1. Materials

    MSWI FA and BA were obtained from an incinerator located incentral Taiwan. Micro-nano (ground by ball mill, RETSCH, PM100) and non micro-nano MSWI ashes properties of metal com-pounds and image by XRD (PANalytical XPert Pro MRD) andFE-SEM (JEOL JSM-6700F) and micro-nano MSWI ashes distribu-tion by high performance particle sizer (HPPS, HPP5001, Malvern)can be found from Fig. S-1S-5, respectively. Figure S-1 showed theXRD plot of MSWI FA, micro-nano MSWI FA, MSWI BA and micro-nano MSWI BA. XRD plot of Figure S-1 showed to contain Al2O3,CaCO3, Ca(OH)2, SiO2, Ca3SiO5, CaMg(CO3)2, Ca2SiO4, PbO and ZnSfor all MSWI BA and FA. CaO, Al2O3, SiO2 were mostly found inMSWI FA and BA. Figure S-2 showed the FE-SEM image of un-ground MSWI FA and BA while Figure S-3 showed the FE-SEM im-age of ground micro-nano MSWI FA and BA. Results of FE-SEMshowed that ground micro-nano MSWI BA (Fig. S-3f) had the po-tential to agglomerate compared to unground ones (Fig. S-2f).Ground micro-nano MSWI FA (Fig. S-3c) had more needle shapethan unground ones (Fig. S-2c). Figure S-4B showed that particlecle size distributions of micro-nano MSWI BA were 68%, 0% and32% for 0.4106, 1061110 and 111010000 nm after immediatemeasurement respectively while Figure S-5D indicated that thoseof micro-nano MSWI BA were 55, 8% and 37% for 0.4106, 1061110 and 111010000 nm after one day settlement respectively.MSWI FA had higher amount of 0.4106 nm than MSWI BA.

    Particle size distribution and chemical compositions such asmetal element, metal compounds and PAHs/PCDD(Fs) can be seenin Table S-1 and Table S-2. Table S-1 showed the particle size range(lm) and individual ratio (%) of BA and FA from some reports (Loet al., 2005; Wey et al., 2006; Huang and Huang, 2008). It also pre-sented the particle size distribution of micro-nano MSWI BA andMSWI FA investigated in this study. Table S-2 presented the metalscontent, LOI (loss of ignition), pH and PAHs by this investigationand dl-PCBs, PBDD/Fs, PCDD/Fs, PAHs and metals oxides from liter-atures as indicated in superscript number. Table S-3 indicated thebioreactors type, analyzed items and frequency and the requiredbioreactors for experiment. Table S-4 reported the metals levelsin the various ashes and control bioreactors that might affect theinhibition or stimulation of MSW anaerobic digestion.

    Physical and chemical components of MSW and anaerobicsludge seeding from Fu-Tien located in Taichung city were as de-scribed by Lo et al. (2009). Major elements of organic MSW suchas C, H, O, N etc. were measured by elemental analyzer (HeraeusvarioIII-NCH). C, H, O and N were measured to be about 46%, 6%,41% and 1.4% (C38.3H60O25.63N) respectively. MSW and sludge seed-ing were measured to have TS 5.5% (VS 4%) and TS 3% (VS1%) respectively. Table 1 and Table 2 showed the basic character-istics of MSW and sludge seeding. Table 1 showed that Taichungcity and Taiwan MSW had the close C(%), N(%), S(%), Cl(%) valuesof about 20.55 and 17.38, 0.50 and 0.47, 0.47 and 0.5, 0.0625 and0.07 respectively. C (46%) and N (1.4%) of synthetic MSW showedhigher compared to those of Taichung city and Taiwan MSW. How-ever, C/N ratios of Taichung city, Taiwan and synthetic MSW werefound to have close values in the order of 41.1, 39.68 and 32.86suitable for anaerobic digestion.

    3. Experimental

    Anaerobic reactors were 500 mL plastic bottle each containing350 mL MSW and 150 mL anaerobic sludge seeding admixture.size distributions of micro-nano MSWI FA were 83, 2 and 15% for0.4106, 1061110 and 111010000 nm after immediate measure-ment respectively. Figure S-4D indicated that particle size distribu-tions of micro-nano MSWI FA were 75%, 0% and 25% for 0.4106,

    an MSW.

    S (%) Cl (%) P (%) K (%) C/N ratio

    32.860.47 0.0625 0.1402 0.125 41.10.5 0.07 39.68

    nology 114 (2012) 9094 91Adding ratios for MSWI FA (FA) and micro-nano FA (MNFA) were0.12, 3, 6, 18 and 30 g g1 VS while those for MSWI BA (BA) and mi-cro-nano BA (MNBA) were 0.6, 12, 36, 60 and 120 g g1 VS respec-tively. Anaerobic reactors without ashes addition were conductedas the control. All anaerobic reactors were carried out with dupli-cate. Briey speaking, 2 reactors (12 = 2) were used to measurethe biogas production per day while 12 reactors (62 = 12) for eachadded ratio were sacriced to analyze the pH, ORP, EC, salinity, VSand metals in ltrate at day 0, 10, 20, 30, 50 and 90. Detailed anal-ysis frequency can be seen in Table S-3. All anaerobic reactors were

  • an

    A30

    MNB

    B

    ed

    Techperformed by batch mode without stirring and were maintained at35 C oven suitable for anaerobic process.

    Biogas production was measured by gas collector with waterreplacement method. pH, ORP, EC, salinity, VS and metals in ltrate(after 100 mL admixture membrane ltration) were measured(Table S-3) according to standard methods for the examination ofwater and wastewater (AWWA, 1995). pH, ORP and EC and salinitywere measured by pH 207 (Lutron), pH meter SP-2300 (SUNTEX)

    Various ashes added

    MNFA

    0.12MN

    FA3MN

    FA6

    MNFA

    18

    MNFA

    30FA

    0.12

    FA3

    FA6

    FA18

    F

    0

    50

    Fig. 1. Biogas accumulation in various ashes addioga

    s ac

    cum

    ulat

    ion,

    mL

    g-1 V

    S

    100

    150

    200

    250Day 10Day 30Day 50Day 70Day 90

    92 H.M. Lo et al. / Bioresourceand Con 400 series (SUNTEX) respectively. TS and VS were mea-sured by 105 C oven (DS45, Deng Yng) and 550 C furnace (CMF304, Cheng Jang). Metals were analyzed by ICP-OES (IRIS IntrepidII, Thermal Electron Corporation). ICP-OES was set at the requiredoperational conditions. Incident energy was 1100W and reectiveenergy was

  • -100

    TechVarious ashes added and control anaerobic reactors

    MNFA

    0.12

    MNFA

    3MN

    FA6

    MNFA

    18

    MNFA

    30FA

    0.12

    FA3

    FA6FA

    18FA

    30

    MNBA

    0.6

    MNBA

    12

    MNBA

    36

    MNBA

    60

    MNBA

    120BA0.6BA

    12BA

    36BA

    60BA

    120Con

    trol

    pH

    4

    5

    6

    7

    8

    9

    10

    11

    EC

    , mS

    /cm

    4

    6

    8

    10

    H.M. Lo et al. / Bioresource(Lo et al., 2012, 2010, 2009; Fermoso et al., 2009; Chen et al., 2008;Yuan et al., 2009; Tan et al., 2009; Altas, 2009; Li and Fang, 2007;Lin and Shei, 2008; Yue et al., 2007; Ma et al., 2009; Worm et al.,2009) as listed in Table S-4. Those levels in the control and ashesdosed bioreactors were found to have potential stimulation ratherthan inhibition particularly occurred in the ashes dosed bioreactors(MNFA3, MNFA6, MNFA18, MNFA30, FA3, FA6, FA18, FA30,MNBA12, MNBA36, MNBA60, MNBA120, BA12, BA36, BA60,BA120) (Fig. 1, Table S-4). The biogas accumulation and VS reduc-tion can also be found in Fig. S-7.

    Some studies were reported that metal oxides nanoparticlessuch as TiO2, Al2O3, SiO2, ZnO and CuO could affect the activatedsludge and cattle manure anaerobic digestion (Mu and Chen,2011; Mu et al., 2011; Luna-delRisco et al., 2011). Mu and Chen(2011) reported that 30 and 150 mg g1-TSS of ZnO nanoparticlescould induce 18.3% and 75.1% anaerobic digestion inhibition ofwaste activated sludge, respectively. However, it showed no inhib-itory effect at 1 mg g1-TSS of ZnO. Mu et al. (2011) also reportedthat nano-TiO2, nano-Al2O3 and nano-SiO2 in doses up to150 mg g1-TSS and nano-ZnO 6 mg g1-TSS had no effect onanaerobic digestion. However, nano-ZnO 30 and 50 mg g1-TSS de-creased biogas production respectively to 77.2% and 18.9% of thecontrol. Released Zn level from nano-ZnO was thought to be thekey factor for the methane generation inhibition. Luna-delRiscoet al. (2011) indicated that biogas production was severely affectedat concentrations of bulk and nanoparticles over 120 and15 mg L1 for CuO and 240 and 120 mg L1 for ZnO, respectively.EC50 concentrations for methane inhibition were estimated to be129 mg Cu L1 for bulk CuO, 10.7 mg Cu L1 for nano CuO,

    Various ashes added and control anaerobic reactors

    MNFA

    0.12MN

    FA3MN

    FA6

    MNFA

    18

    MNFA

    30FA

    0.12

    FA3

    FA6FA

    18FA

    30

    MNBA

    0.6

    MNBA

    12

    MNBA

    36

    MNBA

    60

    MNBA

    120BA0.6BA

    12BA

    36BA

    60BA

    120Co

    ntrol

    0

    2

    Fig. 2. pH, ORP, EC and salinity in various ashes addedVarious ashes added and control anaerobic reactorsMN

    FA0.1

    2MN

    FA3MN

    FA6

    MNFA

    18

    MNFA

    30FA

    0.12

    FA3

    FA6FA

    18FA

    30

    MNBA

    0.6

    MNBA

    12

    MNBA

    36

    MNBA

    60

    MNBA

    120BA0.6BA

    12BA

    36BA

    60BA

    120Co

    ntrol

    -250

    -200

    -150

    Sal

    inity

    2

    3

    4

    5OR

    P, m

    V

    -50

    0

    50

    100

    150

    nology 114 (2012) 9094 93101 mg Zn L1 for bulk ZnO and 57.4 mg Zn L1 for nano ZnO. Inthis study, released levels (Fig. S-4) from MSWI ashes (micro-nanoand non micro-nano scale) containing Al2O3, CaCO3, Ca(OH)2, SiO2,Ca3SiO5, CaMg(CO3)2, Ca2SiO4, PbO and ZnS by XRD analysisappeared to show stimulation (Fig. 1) rather than inhibition atthe ashes dosed bioreactors (MNFA3, MNFA6, MNFA18, MNFA30,FA3, FA6, FA18, FA30, MNBA12, MNBA36, MNBA60, MNBA120,BA12, BA36, BA60, BA120) (Table S-4). Micro-nano ashes addedbioreactors also showed to have the higher biogas production thanthe corresponding non micro-nano ashes added ones. This resultmight be attributed to be the micro-nano ashes agglomerationsuitable for more microorganisms habitat therefore enhancingthe biogas production. It is noted that individual and combinedmetals effects on anaerobic digestion might be conducted for fur-ther detailed understanding of MSWI ashes and metal oxides onsludge and MSW anaerobic digestion.

    5. Conclusions

    Biogas production was enhanced by suitable MSWI ashes addi-tion that might release suitable metals levels benecial for the in-crease of biogas production particularly found at same ratios ofmicro-nano ashes addition compared to control. MNBA 36 anaero-bic reactors were found to have the highest biogas productioncompared to other ones. Trace compounds such as PAHs andPCDD/Fs were reported to be adsorbed onto MSW and sludgeadmixture indicating no harm for the anaerobic digestion. It is con-cluded that suitable MSWI ashes addition could stimulate the

    Various ashes added and control anaerobic reactors

    MNFA

    0.12MN

    FA3MN

    FA6

    MNFA

    18

    MNFA

    30FA

    0.12

    FA3

    FA6FA

    18FA

    30

    MNBA

    0.6

    MNBA

    12

    MNBA

    36

    MNBA

    60

    MNBA

    120BA0.6BA

    12BA

    36BA

    60BA

    120Co

    ntrol

    0

    1

    anaerobic reactors at day 0, 10, 20, 30, 50 and 90.

  • anaerobic digestion and enhance the biogas production particularfound in the micro-nano MSWI ashes addition.

    Acknowledgements

    The authors are grateful to The National Science of Council ofTaiwan (R.O.C) for providing research grant No. NSC 94-2211-E-324-003.

    Appendix A. Supplementary data

    Supplementary data associated with this article can be found, inthe online version, at http://dx.doi.org/10.1016/j.biortech.2012.03.002.

    Chen, Chiu, H.Y., Wu, H.Y., Chao, T.W., Chen, Y.R., Liu, D.W., Lo, F.C., 2012. Effectsof spiked metals on the MSW anaerobic digestion. Waste Manag. Res. 30, 3248.

    Lo, H.M., Kurniawan, T.A., Sillanp, M.E.T., Pai, T.Y., Chiang, C.F., Chao, K.P., Liu,M.H., Chuang, S.H., Banks, C.J., Wang, S.C., Lin, K.C., Lin, C.Y., Liu, W.F., Cheng,P.H., Chen, C.K., Chiu, H.Y., Wu, H.Y., 2010. Modeling biogas production fromorganic fraction of MSW co-digested with MSWI ashes in anaerobic bioreactors.Bioresource Technol. 101, 63296335.

    Lo, H.M., Liao, Y.L., 2007. The metals-leaching and acids-neutralizing capacity ofMSW incinerator ash co-disposed with MSW in landll sites. J. Hazard. Mater.142, 412519.

    Lo, H.M., Liu, M.H., Pai, T.Y., Liu, W.F., Lin, C.Y., Wang, S.C., Banks, C.J., Hung, C.H.,Chiang, C.F., Lin, K.C., Chen, P.H., Chen, J.K., Chiu, H.Y., Su, M.H., Kurniawan, T.A.,Wu, K.C., Hsieh, C.Y., Hsu, H.H., 2009. Biostabilization assessment of MSW co-disposed with MSWI y ash in anaerobic bioreactors. J. Hazard. Mater. 162,12331242.

    Luna-delRisco, M., Orupld, H.-C. Dubourguier, 2011. Particle-size effect of CuO andZnO on biogas and methane production during anaerobic digestion. J. Hazard.Mater. 189, 603608.

    Ma, J., Mungoni, L.J., Verstraete, W., Carballa, M., 2009. Maximum removal rate of

    94 H.M. Lo et al. / Bioresource Technology 114 (2012) 9094References

    Altas, L., 2009. Inhibitory effect of heavy metals on methane-producing anaerobicgranular sludge. J. Hazard. Maters. 162, 15511556.

    American Public Health Association, American Water Works Association, WaterEnvironment Federation, 1995. Standard Methods for the Examination of Waterand Wastewater, 19th ed. AWWA, Hanover, MD.

    Boni, M.R., Leoni, S., Sbaffoni, S., 2007. Co-landlling of pretreated waste: Disposaland management strategies at lab-scale. J. Hazard. Mater. 147, 3747.

    Chen, Y., Cheng, J.J., Creamer, K.S., 2008. Inhibition of anaerobic digestion process: Areview. Biores. Technol. 99, 40444064.

    Fermoso, F.G., Bartacek, J., Jansen, S., Lens, P.N.L., 2009. Metal supplementation toUASB bioreactors: from cell-metal interactions to full-scale application. Sci. theTotal Environ. 407, 36523667.

    Gikas, P., 2007. Kinetic responses of activated sludge to individual and joint nickel(Ni(II)) and cobalt (Co(II)): An isobolographic approach. J. Hazard. Mater. 143,246256.

    Ham, S.Y., Kim, Y.J., Lee, D.H., 2008. Leaching characteristics of PCDDs/DFs anddioxin-like PCBs from landlls containing municipal solid waste andincineration residues. Chemosphere 70, 16851693.

    Huang, W.J., Huang, H.S., 2008. Using fume silica as heavy metals stabilizer for highalkali and porous MSWI baghouse ash. J. Hazard. Mater. 152, 176182.

    Kida, K., Shigematsu, T., Kijima, J., Numaguchi, M., Mochinaga, Y., Abe, N., Morimura,S., 2001. Inuence of Ni2+ and Co2+ on methanogenic activity and the amountsof coenzymes involved methanogenesis. J. Biosci. Bioeng. 91, 590595.

    Kuo, C.W., Genthner, B.R.S., 1996. Effect of added heavy metals onbiotransformation and biodegradation of 2-chlorophenol and 3-chlorobenzoate in anaerobic bacterial consortia. Appl. Environ. Microbiol. 62,23172323.

    Li, C., Fang, H.H.P., 2007. Inhibition of heavy metals on fermentative hydrogenproduction by granular sludge. Chemosphere 67, 668673.

    Lin, C.-Y., Shei, S.-H., 2008. Heavy metal effects on fermentative hydrogenproduction using natural mixed microora. Int. J. Hydr. Energy 33, 587593.

    Lin, K.L., Chen, B.Y., 2006. Understanding biotoxicity for reusability of municipalsolid waste incinerator (MSWI) ash. J. Hazard. Mater. A138, 915.

    Lin, Y.S., Chen, K.S., Lin, Y.C., Hung, C.H., Chang-Chien, G.P., 2008. Polychlorinateddibenzo-p-dioxins/dibenzofurans distributions in ash from different units in amunicipal solid waste incinerator. J. Hazard. Mater. 154, 954962.

    Liu, Y., Li, Y., Li, X., Jiang, Y., 2008. Leaching behavior of heavy metals and PAHs fromMSWI bottom ash in a long-term static immersing experiment. Waste Manage.28, 11261136.

    Lo, H.M., 2005. Metals behaviors of MSWI bottom ash co-digested anaerobicallywith MSW. Resources, Conservation Recycling 43, 263280.

    Lo, H.M., Chiang, C.F., Tsao, H.C., Pai, T.Y., Liu, M.H., Kurniawan, T.A., Chao, K.P., Liou,C.T., Lin, K.C., Chang, C.Y., Wang, S.C., Banks, C.J., Lin, C.Y., Liu, W.F., Chen, P.H.,propionic acid as a sole carbon source in UASB reactors and the importance ofthe macro- and micro-nutrients stimulation. Biores. Technol. 100, 34773482.

    Mu, H., Chen, Y., 2011. Long term effect of ZnO nanoparticles on waste activatedsludge anaerobic digestion. Water Res. 45, 56125620.

    Mu, H., Chen, Y., Xiao, N., 2011. Effects of metal oxide nanoparticles (TiO2, Al2O3,SiO2 and ZnO) on waste activated sludge anaerobic digestion. BioresourceTechnol. 102, 1030510311.

    Nam, I.H., Hong, H.B., Kim, Y.M., Kim, B.H., Murugesan, K., Chang, Y.S., 2005.Biological removal of polychlorinated dibenzo-p-dioxins from incinerator yash by Sphingomonas wittichii RW1. Water Res. 39, 46514660.

    Oleszczuk, P., 2009. Application of three methods used for the evaluation ofpolycyclic aromatic hydrocarbons (PAHs) bioaccessibility for sewage sludgecomposting. Biores. Technol. 100, 413420.

    Shitamura, A., Kasai, A., Hiramatsu, N., Hayakawa, K., Yao, J., Kitamura, M., 2005.Bioassay-based screening of microorganisms that degrade dioxin usingsubstrate-immobilized microtubes. Anal. Biochem. 347, 135143.

    Tan, L., Qu, Y., Zhou, J., Ma, F., Li, A., 2009. Dynamics of microbial community for X-3B wastewater decolorization coping with high-salt and metal ions conditions.Biores. Technol. 100, 30033009.

    Wang, L.C., Hsi, H.C., Wang, Y.F., Lin, S.L., Chang-Chien, G.P., 2010. Distribution ofpolybrominated diphenyl ethers (PBDEs) and polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/Fs) in municipal solid waste incinerators.Environ. Pollut. 158, 15951602.

    Wey, M.Y., Lu, K.Y., Tsai, T.H., Chou, J.T., 2006. Thermal treatment of the y ash frommunicipal solid waste incinerator with rotary kiln. J. Hazard. Mater. B137, 981989.

    Worm, P., Fermoso, F.G., Lens, P.N.L., Plugge, C.M., 2009. Decreased activity of apropionate degrading community in a UASB reactor fed with synthetic mediumwithout molybdenum, tungsten and selenium. Enzyme Microb. Technol. 45,139145.

    Wyrzykowska, B., Hanari, N., Orlikowska, A., Yamashita, N., Falandysz, J., 2009.Dioxin-like compound compositional proles of furnace bottom ashes fromhousehold combustion in Poland and their possible associations withcontamination status of agricultural soil and pine needles. Chemosphere 76,255263.

    Yasuhara, A., Katami, T., 2007. Leaching behavior of polychlorinated dibenzo-p-dioxins and furans from the y ash and bottom ash of a municipal solid wasteincinerator. Waste Manage. 27, 439447.

    Yuan, Z., Yang, H., Zhi, X., Shen, J., 2009. Increased performance of continuous stirredtank reactor with calcium supplementation. Int. J. Hydr. Energy. http://dx.doi.org/10.1016/j.ijhydene.2009.04.018.

    Yue, Z.-B., Yu, H.-Q., Wang, Z.-L., 2007. Anaerobic digestion of cattail with rumenculture in the presence of heavy metals. Biores. Technol. 98, 781786.

    Effects of micro-nano and non micro-nano MSWI ashes addition on MSW anaerobic digestion1 Introduction2 Methods2.1 Materials

    3 Experimental4 Results and discussion4.1 Biogas production accumulation4.2 Anaerobic parameters4.3 Metals levels effects on MSW anaerobic digestion

    5 ConclusionsAcknowledgementsAppendix A Supplementary dataReferences

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