10results about "Biological synthesis" patented technology

Provided is a method for reusing an adsorbent which can stably exhibit purification ability by regenerating a used absorbent, in order to keep the composition of a purified syngas constant. The present invention concerns a method for regenerating a zeolite adsorbent which adsorbs a carbon dioxide gas from a syngas comprising the carbon dioxide gas and reduces the concentration of the carbon dioxide gas in the syngas, comprising: a step of recovering a used zeolite adsorbent; a step of calcining the used zeolite adsorbent at a temperature of 300 °C to 600 °C in an oxygen atmosphere to produce a regenerated zeolite adsorbent; and a step of reusing the regenerated zeolite adsorbent.

A system and method for converting gaseous carbon compounds into carbon-neutral or carbon-negative products. The system and method uses biological processes to metabolize the gaseous carbon compounds. The gaseous carbon compounds include a mixture of CO2 and CH4 from a single source or from two or more different sources. Separate biological processes are combined to process different gaseous carbon compounds. Gaseous carbon compounds produced as a by-product of one biological process are used as a feedstock for, or as part of, another biological process. To assist in minimizing the carbon footprint and enabling an overall carbon-negative profile, a renewable energy system is provided to power the apparatus and equipment of the system and method.

To provide a system and a method for converting a gaseous carbon compound into a carbon-neutral or carbon-negative product.SOLUTION: A system and a method use a biological process of metabolizing a gaseous carbon compound. The gaseous carbon compound includes a mixture of CO2 and CH4 from a single source or two or more of different sources. Separate biological processes are united, and different gaseous carbon compounds are treated. The gaseous carbon compound produced as a subsidiary product of a single biological process is used as a raw material for another biological process or a part thereof. In order to assist minimization of a carbon footprint and facilitation of an overall carbon-negative profile, a recyclable energy system is provided, which gives a driving power to an apparatus and an installation of the system and method.SELECTED DRAWING: Figure 2

Provided is a carbon monoxide (CO) dehydrogenase with increased oxygen resistance and / or enzyme activity, specifically, a mutant CO dehydrogenase with increased oxygen resistance and / or enzyme activity by mutating amino acid residues. The CO dehydrogenase may detoxify toxic carbon monoxide at room temperature and pressure by easily oxidizing carbon monoxide and converting the same into carbon dioxide, and may effectively oxidize carbon monoxide even in gas including oxygen. Furthermore, since it is possible to remove carbon monoxide, which is emitted in large quantities in industries such as petrochemical and steel industries, cigarette burning, household cooking, various boilers, and combustion, through cigarette filters, air purifiers, intake filters in household cooking equipment, gas boilers, etc. the CO dehydrogenase may be utilized in various ways.

The present invention provides a method and system for producing methane. The method comprises contacting methanogenic microorganisms in a reaction vessel with hydrogen and carbon dioxide, wherein the gas feed rate of hydrogen and carbon dioxide into the reaction vessel is at least 1 vvm in total or at least 1.2 vvm in total. The invention further provides a system for producing methane comprising at least one device for generating electric energy from a renewable and / or non-renewable energy source, at least one device for producing hydrogen and / or oxygen by the electrolysis of water and / or brine, and at least one bioreactor comprising a reaction vessel suitable for growing, fermenting and / or culturing methanogenic microorganisms and at least one device for providing a gas feed of hydrogen and carbon dioxide into the reaction vessel.

Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and / or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms, concentrating the disrupted microorganisms, and extracting lipids from the disrupted microorganisms at high temperature in the presence of a salt and in the absence of solvent.

This invention provides a method for producing medium-chain fatty acids (MCFAs) from straw based on DES additives, belonging to the field of MFA extraction technology. This method uses DES with choline chloride as the hydrogen bond acceptor to treat agricultural waste straw, improving the utilization rate of agricultural waste and promoting the anaerobic fermentation process for MFA production. Pretreatment before anaerobic fermentation and the thermal shock effect during anaerobic fermentation improve the depolymerization of straw, inhibit methanogenic bacteria in mesophilic anaerobic fermentation, suppress methane production during continuous anaerobic fermentation, and ensure maximum utilization of straw for MFA production. This method solves the problems of methanogenesis tendency, incomplete substrate utilization, insufficient electron donors during acid production, and low fermentation efficiency in the anaerobic fermentation of straw for MFA production.

A carbon dioxide-neutral biodigester plant includes a biodigester for carbon dioxide-neutral, single-stage or multi-stage production of biogas by fermentation of biomass in a fermentation liquid agitated in presence of elemental hydrogen, hydrogenotrophic and methanogenic archaea, and activated carbon masses, a source of ammonia connected to a first ammonia line, an ammonia cracker to produce hydrogen or a hydrogen-nitrogen mixture by catalytic cracking of ammonia, a first hydrogen line for feeding the produced hydrogen or the hydrogen-nitrogen mixture directly into the biodigester, and a treating device for treating activated coal masses with hydrogen at higher pressure. The treating device includes a pressure line and a treating spray lance. Hydrogen-containing activated coal masses configured as spray cones are injected into the fermentation liquid of the biodigester.

A system comprising a collocated thermal plant, water source, CO2 source and biomass growth module is disclosed. A method of improving the environment by utilizing the system is disclosed.

This invention is a bioreactor device adapted to improve air quality. The bioreactor consists of a base that houses the mechanical components and a vessel that holds liquid mixture of water, a photosynthetic microorganism, and a media. The bioreactor has an air pump which draws room air into the base of the device through an air filter. The bioreactor bubbles the air through the liquid mixture. Photosynthesis converts the carbon dioxide to oxygen.