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5919674 |
Copper recovery
A process for the recovery of copper from a copper sulphide concentrate in slurry form. The slurry is subjected to a biological oxidation turning the copper sulphide to soluble copper sulphate. The...
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5871952 |
Process for selection of Oxygen-tolerant algal mutants that produce H.sub.2
A process for selection of oxygen-tolerant, H 2 -producing algal mutant cells comprising: (a) growing algal cells photoautotrophically under fluorescent light to mid log phase; (b) inducing...
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5863533 |
Cloning and expression of microbial phytase
A nucleotide sequence encoding phytase has been isolated and cloned. The coding sequence has been inserted into an expression construct which in turn has been inserted into a vector capable of...
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5834264 |
Process for anaerobic production of hydrogen using a delta-proteobacterium
A process for producing hydrogen anaerobically in a culture medium or in the environment using a proteobacteria is described. Preferably the proteobacteria is Desulfovibrio sp. ATCC 55738 (FOX1)....
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5827701 |
Method for the generation and use of ferric ions
A process for generating a ferric ion solution. The process includes the steps of establishing in a vessel a population of acidophilic, chemoautotrophic bacteria which oxidize ferrous ions into...
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5821111 |
Bioconversion of waste biomass to useful products
A process is provided for converting waste biomass to useful products by gasifying the biomass to produce synthesis gas and converting the synthesis gas substrate to one or more useful products....
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5795751 |
Biofilter for removal of nitrogen oxides from contaminated gases under aerobic conditions
A biofilter for reducing concentrations of gaseous nitrogen oxides in a polluted gas comprises a porous organic filter bed medium disposed in a housing, the filter bed medium including a mixed...
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5766896 |
Method of producing iodine by use of a copper containing oxidase enzyme
The present invention relates to a method for oxidation of iodide which comprises contacting, in an aqueous solution, a copper-containing oxidaze enzyme and a source of ionic iodide(I - ), for a...
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5739028 |
Chromium (VI)-resistant strain of Shewanella alga
A chromium-resistant strain of Shewanella alga BrY and method of using such for removing chromium (VI) from a chromium-contaminated waste stream involving treating the waste stream with the...
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5726046 |
Method of producing sugars using strong acid hydrolysis
A economically viable method for producing sugars using concentrated acid hydrolysis of biomass containing cellulose and hemicellulose is disclosed. The cellulose and hemicellulose in the biomass...
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5597714 |
Strong acid hydrolysis of cellulosic and hemicellulosic materials
A economically viable method for producing sugars using concentrated acid hydrolysis of biomass containing cellulose and hemicellulose is disclosed. The cellulose and hemicellulose in the biomass...
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5569596 |
Method for bacterial reduction of chromium (VI)
A chromium-resistant strain of Shewanella alga BrY and method of using such for removing chromium (VI) from a chromium-contaminated waste stream involving treating the waste stream with the...
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5556779 |
Compounds and methods useful for reductive dehalogenation of aliphatic halocarbons
This invention describes a method for catalyzing sequential reductive dehalogenation reactions on aliphatic halocarbons using free radical intermediates. More specifically, this invention involves...
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5491078 |
Leach solution containing glucose, galactose, catalase, glucose oxidase, galactose oxidase, ascorbic acid and water soluble metal cyanides and halides
A leach solution comprises water, glucose and glucose oxidase. The oxidase acts upon the glucose to produce gluconic acid and hydrogen peroxide. The leach solution reacts with mineral elements and...
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5489521 |
Mutant having ice nucleating activity at room temperature and method for making snow and ice using it
Disclosed herein are a new mutant of Pseudomonads having ice nucleating activity and an improved method for making snow and ice using it. More particularly, Pseudomonas syringae SO754 of the...
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5480788 |
Bleaching of plant materials
A variety of plant materials adopted for processing into, e.g., low-calorie vegetable fibers and dietary flours, are bleached by (1) soaking a plant material having a moisture content of up to 50%...
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5468628 |
Compounds and methods for generating oxygen and free radicals used in general oxidation and reduction reactions
Composition and methods; for carrying out a variety of oxidation reactions, reduction reactions, or both utilizing a free radical generating catalyst, a mediator, and a reductant are disclosed. The...
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5468626 |
Method for separating a sulfur compound from carbonaceous materials
The present invention relates to a method for separating a sulfur compound from a fossil fuel containing sulfur compounds comprising contacting said fossil fuel with a biosorption agent which binds...
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5458752 |
Apparatus and method for the desulfurization of petroleum by bacteria
A method for treating petroleum with anaerobic microorganisms acting as biocatalysts that can remove sulfur atoms from hydrocarbon molecules, under anaerobic conditions, and then convert the sulfur...
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5354688 |
Anaerobic microbial remobilization of coprecipitated metals
A process is provided for solubilizing coprecipitated metals. Metals in wastestreams are concentrated by treatment with an iron oxide coprecipitating agent. The coprecipitated metals are...
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5350685 |
Process for preparing hydrogen gas using microorganism
The present invention relates to a process for preparing hydrogen gas on an industrial scale by culturing the microorganism Clostridium beijerinckii Ferm BP-3592 or the anaerobic asporogenic...
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5350692 |
Microorganisms useful for hydrogen gas production
The present invention relates to a process for preparing hydrogen gas on an industrial scale by culturing the microorganism Clostridium beijerinckii Ferm BP-3592 or the anaerobic asporogenic...
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5278069 |
Bioleaching method for the extraction of metals from coal fly ash using thiobacillus
A bioleaching process is utilized for the extraction of metals from coal fly ash (CFA). The CFA is suspended in an acidic sea water based culture medium and the suspension is incubated with a...
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5256544 |
Microbial solubilization of phosphate
A process is provided for solubilizing phosphate from phosphate containing ore by treatment with microorganisms which comprises forming an aqueous mixture of phosphate ore, microorganisms operable...
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5252483 |
Degradation of ferric chelates by a pure culture of agrobacterium sp.
A novel microorganism has been isolated and identified as Agrobacterium sp., a gram-negative aerobe. The Agrobacterium sp. microorganisms has been found to efficiently degrade ferric chelates of...
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5250427 |
Photoconversion of gasified organic materials into biologically-degradable plastics
A process is described for converting organic materials (such as biomass wastes) into a bioplastic suitable for use as a biodegradable plastic. In a preferred embodiment the process involves...
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5236677 |
Biological process for the elimination of sulphur compounds present in gas mixtures
A continuous process for the microbiological conversion and removal of malodorous sulphur-containing organic and inorganic compounds from a gaseous stream, comprising the steps of providing a...
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5231018 |
Extraction of metal oxides from coal fly ash by microorganisms and a new microorganism useful therefor
Metal oxides are extracted from coal fly ash by a bio-leading process. The ash is suspended in an aqueous saline solution having a pH within the range of from 5 to 8 and the suspension is incubated...
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5225340 |
Process for reducing metal concentration in aqueous systems
The concentration of at least one metal species in an aqueous system is at least reduced in an aqueous system that contains at least one kind of chelating agent, by adding to such system a species...
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5198341 |
Useful for cleavage of organic C-S bonds Bacillus sphaericus microorganism
A mutant Bacillus sphaericus strain ATCC No. 53969 which has the property of sulfur removal and sulfur metabolism by selective cleavage of C-S bonds in organic carbonaceous materials.
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5162214 |
CMA production utilizing acetate ion exchange from fermentation broth
A method is provided for removing an anion from an aqueous liquid, such as a fermentation broth. The aqueous broth is contacted with a water-immiscible ion exchange liquid to extract the anion from...
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5151347 |
Closed photobioreactor and method of use
An apparatus is disclosed for the controlled production of microorganisms by photosynthesis in a closed photobioreactor. The closed photobioreactor contain a photosynthetic culture in a...
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5077208 |
Microbial removal of no.sub.x from gases
Disclosed is a process by which a gas containing nitric oxide is contacted with an anaerobic microbial culture of denitrifying bacteria to effect the chemical reduction of the nitric oxide to...
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5071755 |
Biodegradation of aliphatic chloroethylene compounds
A method of degrading halogenated aliphatic hydrocarbons is disclosed comprising incubating microorganisms capable of degrading halogenated aliphatic hydrocarbons by an aromatic degradative pathway...
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5064663 |
Sodium chloride substitute containing autolyzed yeast and ammonium chloride
A sodium chloride substitute composition having low bitterness and an intense sodium chloride flavor is prepared containing autolyzed yeast, ammonium chloride and optionally potassium chloride. The...
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4959315 |
Biodegradation of chloroethylene compounds
A method of degrading chloroethylene compounds is disclosed comprising incubating microorganisms capable of degrading chloroethylene compounds by an aromatic degradative pathway together with the...
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4956290 |
Large scale process for the purification of alcohol oxidase
A process for the purification of alcohol oxidase from whole cells of Pichia pastoris grown on methanol by the sequential steps of autolysis, crossflow filtration, ultrafiltration and...
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4945049 |
Method for preparing magnetic powder
The present invention relates to a method for preparing magnetic powder comprising homogeneous and fine particles using an alkali-producing enzyme. The object of the present invention is to provide...
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4931262 |
Method of treating H.sub.2 S containing gases
There is disclosed an improved method for the purification of H 2 S containing gases, which comprises the steps of (1) oxidizing a solution of ferrous sulfate into a solution of ferric sulfate...
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4921800 |
Microbial process for photohydrogen production from cellulose in high saline water medium
A process that is carried out in partly sequential and partly simultaneous steps as detailed below, to build a process, with natural light using wave lengths from 360 nm to 900 nm using solid...
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4920055 |
Conversion of alcohols to aldehydes and hydrogen peroxide by substrate and product tolerant methanol oxidases
Disclosed is a process for converting alcohols to aldehydes and hydrogen peroxide through the use of a methanol oxidase enzyme. The process involves introducing a lower alkyl or lower alkylene...
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4915842 |
Simple system to decompose pesticide waste water
A hybrid chemical/biological process which is highly effective to destroy the herbicide, Atrazine, in wasterwater solutions is herein disclosed. The process comprises subjecting the atrazine...
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4886752 |
Microbial production of ultrafine-grained magnetite
A method of producing magnetite is disclosed which comprises culturing a microorganism designated GS-15 in the presence of organic matter and a ferric iron compound. Unlike prior art production of...
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4880740 |
Microbial reduction of iron ore
A process is provided for reducing iron ore by treatment with microorganisms which comprises forming an aqueous mixture of iron ore, microorganisms operable for reducing the ferric iron of the iron...
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4879240 |
Microbial control of hydrogen sulfide production by sulfate reducing bacteria
Mutant strains of Thiobacillus denitrificans are used to inoculate an environment containing sulfate and sulfate-reducing bacteria to control the net formation of sulfide. The mutant strains are...
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4868120 |
Method of recovering both silver and a base for sensitive materials from sensitive materials by utilizing micro-organisms
Method of recovering both silver and a base in a reusable condition from sensitive material, such as a film or a photographic printing paper, having surfaces including gelatine and fine silver...
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4826602 |
Reduction of trace elements to the elemental form by microorganisms
A process for reducing the concentration of ionic species of heavy metals in an aqueous waste solution by conversion to a corresponding elemental metal comprises contacting the waste solution...
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4758417 |
Gas treatment process
The invention provides a process for the removal of hydrogen sulphide from contaminated gas which comprises contacting contaminated gas with an aqueous ferric-ion solution in a first reactor,...
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4696747 |
Process for the elimination of nitrates by means of a microbiological conversion in the presence of hydrogen gas
In a microbiological process for the elimination of nitrates from an aqueous liquid, the liquid to be denitrified passes through a first reaction zone containing a denitrifying biomass which...
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4584271 |
Bacterial regeneration apparatus and process
Apparatus and a method are disclosed for reducing sulfate contained within a flowable material to hydrogen sulfide by the use of two stages of reaction. The flowable material is deoxygenated and...
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