5622907

POST-REDUCING TREATMENT OF ALCOHOL SYNTHESIS CATALYSTS

WITH CARBON DIOXIDE

Lee Sunggyu; Parameswaran Vetkav R; Lee Byung G; Kulik Conrad J Akron, OH, UNITED STATES assigned to Electric Power Research Institute Inc

A method is provided for improving the catalytic activity of an alcohol synthesis catalyst. In this method, the catalyst, after activation by exposure to a reducing atmosphere, is improved by contacting with a carbon dioxide-containing gas to convert the zinc oxide in the catalyst to zinc carbonate. This improvement step occurs in situ preferably in the same reactor as used for the synthesizing of the alcohol.

5623105

OXYGEN/CARBON DIOXIDE SENSOR AND CONTROLLER FOR A

REFRIGERATED CONTROLLED ATMOSPHERE SHIPPING CONTAINER

Liston Max D; Harrison Todd I; Hsei Paul Irvine, CA, UNITED STATES assigned to Prolong Systems Inc

A controller for use in a system employing selective permeable membrane technology to maintain a controlled atmosphere within a refrigerated container. The controller is electrically interfaced to an oxygen and carbon dioxide sensing device which is disposed within the container and capable of withstanding severe environmental conditions to measure the levels of oxygen and carbon dioxide within the container. The controller maintains preset levels of oxygen and carbon dioxide within the container and is adapted to calibrate the carbon dioxide and oxygen sensing devices as well as check for proper operation of the sensing devices and default to safety conditions when a failure is detected. The controller is further adapted to control the atmosphere maintenance system in a manner adapted not to increase the peak power requirements of the system.

5630367

ACTIVATED CARBON AND PRODUCTION THEREOF

Kobata Takeji; Ikenaga Yoshihir Sapporo, JAPAN assigned to The Social Welfare Foundation Hokkaido Rehabily

A preparing process of activated carbon includes steps of:

PatentsALERT

combusting scrap tires containing metal wire at 400°C to 900°C under the presence of oxygen, carbon dioxide and vapor; reheating the generated combustible gases up to 800°C to 900°C by adding a further fuel; causing the exhaust gas to heat-exchange with a water pipe boiler so that the temperature of the exhaust gas downs to 180°C to 250°C; and introducing the exhaust having a temperature of 180°C to 250°C into an electric dust collector so as to collect activated carbon. The particle size of the thus obtained distributed substantially in a range of 90 to 110 mesh and the CEC (cation exchange capacity) of the activated carbon falls within 30 to 40.

5630554

METHOD OF SEPARATING AND RECOVERING VALUABLE METALS

AND NON-METALS FROM COMPOSITE MATERIALS

Izumikawa Chiaki; Iwata Hiroyuki; Endoh Shigehisa; Ohya Hitoshi Tokyo, JAPAN assigned to Dowa Mining Co Ltd; Hiraishi Jiro

To insure that rejects or scraps of composite materials such as printed wiring boards that consist of the mixture of metal and non-metal parts are separated into the metal and non-metal components with good precision so that both components can be recovered as recyclable valuables, the composite materials are broken into pieces by means of a shearing machine or the like and the pieces are thereafter ground with a hammer mill or the like to form a mixed powder consisting of metal and non-metal particles, which mixed powder is then fed continuously on to a belt conveyor inclined at an angle with respect to a line perpendicular to the direction of travel, whereby the metal particles are efficiently separated from the non-metal particles; the recovered metal particles being fed to an electrostatic separator to obtain higher grade of concentration by removing the non-metal inclusions.

5639942

TWO PHASE ANAEROBIC DIGESTION PROCESS UTILIZING THERMOPHILIC,

FIXED GROWTH BACTERIA

Steiner Charles G Shawnee Mission, KS, UNITED STATES assigned to Purification Industries International

An improved anaerobic waste water treatment process comprising the steps of introducing waste water containing organic material into a first reaction zone containing therrnophilic, fixed growth, hydrolytic and acidogenic bacteria and fermenting the waste water in the frrst reaction zone under anaerobic conditions at a pH of between about

J. Cleaner Prod., 1997, Volume 5, Number 4 311

PatentsALERT

5 and 6 and a temperature between about 115 to 160 degrees Fahrenheit to produce an acid effluent. The acid effluent is then conveyed to a second reaction zone containing thermophilic, fixed growth methanogenic bacteria where it is fermented under anaerobic conditions at a pH between about 7.2 and 8.2 and at a temperature between about 115 to 160 degrees Fahrenheit to produce process effluent and gas including methane. The methane is collected and the process effluent is removed.

5631024

maleic anhydride in which the recovery of maleic anhydride from a gaseous reaction mixture includes absorbing the maleic anhydride in a solvent and subsequently stripping maleic anhydride from the solvent to obtain crude maleic anhydride product and regenerated absorbing solvent containing polymeric tars and other contaminants. In accordance with the improvement, at least a portion of the regenerated solvent is contacted in an agitated extraction zone with an aqueous liquid extractant to hydrolyze the polymeric tars, transfer water-soluble contaminants to the aqueous extract phase and produce a mixture comprising an aqueous extract phase containing water-soluble contaminants and an organic raftinate phase comprising regenerated absorbing solvent having a reduced concentration of polymeric tars. The aqueous extract and organic raffinate phases are then separated and the organic phase is recycled and used again to absorb maleic anhydride.

MEDICAMENTS FOR BENEFICIAL INSECTS AND METHOD

Kevan Sherrene; Kevan Peter G; Trevino Jack D Cambridge, CANADA assigned to Enviroquest Ltd

There are disclosed therapeutic microcapsules for beneficial insects having a non-toxic matrix with a medicament for treating a beneficial insect disorder substantially uniformly distributed therethrough and therapeutic compositions in which the microcapsules are in a carrier. Also disclosed is the method of treating beneficial insect disorders with such microcapsules and compositions.

5631396

PROCESS FOR CONTINUOUSLY PRODUCING DIMETHYL CARBONATE

Nishihira Keigo; Yoshida Shinichi; Tanaka Shuji; Asada Yutaka Ube, JAPAN assigned to Ube Industries Ltd

5631348 Dimetbyl carbonate ((CH30)2CO) is continuously produced by a catalytic reaction (first step) of CO with

PROTEIN SEQUENCE OF THE PLANT TOXIN GELONIN

Rosenblum Michael; Kohr William J; Aggarwal Bharat Houston, TX, UNITED STATES assigned to The Research Development Foundation

This invention relates to substantially purified gelonin, toxic fragments thereof, the DNA sequences encoding gelonin and use of the DNA for producing, by recombinant technology, gelonin, toxic fragments thereof and fusion proteins. More specifically, the invention relates to the primary amino acid sequence of gelonin, and of the DNA encoding said gelonin and the production of synthetic gelonin and toxic fragments thereof.

CH3N02, with a significantly reduced loss of CH3ONO by the process including a second step wherein (CH30)2CO in a reaction product gas of the first step is absorbed by dimethyl oxalate while contacting the resultant liquid fraction with CO to recover CH30N0, a third step wherein CH30NO is regenerated from NO in the condensed gas fraction produced in the second step and molecular oxygen and CH30H introduced into the third step, the resultant regenerated gas fraction being recycled and reused as a feed gas for the first step, and a fourth step wherein (CH30)2CO contained in the liquid fraction of the second step is collected.

5631526

HYDROGEN ION ACCELERATOR 5631387

Ferry James A Middleton, WI, UNITED STATES

PROCESS FOR THE PREPARATION AND RECOVERY OF MALEIC ANHYDRIDE

Brown Henry C; Alumbaugh William H Pensacola, FL, UNITED STATES assigned to Huntsman Petrochemical Corporation

An improved process for the preparation and recovery of

assigned to National Electrostatics Corporation

A hydrogen ion accelerator produces a beam current that is at least ten times greater than the current supplied by an electrostatic generator by recycling the unreacted portion of the beam. In one application, a 1.76 MeV proton beam is used to generate 9.172 MeV gamma rays for detecting explosives (nitrogen) via either the 13C reaction. The cross-section of the 1.76 MeV proton beam with the carbon

312 J. Cleaner Prod., 1997, Volume 5, Number 4