Some embodiments are directed to a process for the treatment of organic waste which couples in situ biostimulation to produce hydrolytic enzymes and hydrolysis of the refractory organic matter from waste using these enzymes with a view to energy recovery.

An apparatus for removing carbon dioxide from a gas mixture includes at least one artificial leaf. The artificial leaf includes a light transmissive, biodegradable and carbon dioxide and oxygen permeable hydrogel having embedded therein a photosynthetic cyanobacteria capable of the fixing carbon dioxide and a nutrition source for the cyanobacteria. A method of removing carbon dioxide from a gas and a method a making an apparatus for removing carbon dioxide from a gas are also disclosed.

The present disclosure provides compositions and methods for using recombinant C.sub.1 metabolizing microorganisms capable of metabolizing sulfur containing compounds and other contaminants to biologically convert sour or acidic natural gas into high-value molecules, and to allow recovery of stranded oil.

A portable renewable energy microgeneration system is disclosed. The system comprises one or more holding tanks that are configured to perform anaerobic digestion on waste in a multi-phase process using bacteria and a controller configured to automatically control the multi-phase process and to re-use the bacteria. The controller re-uses the bacteria by removing at least a portion of the liquid from the waste after anaerobic digestion is performed on the waste and using the at least a portion of the liquid to wet other waste and repeat the multi-phase process.

The present disclosure is directed to ultrafiltration membranes based on bacterial nanocellulose and graphene oxide. In particular, the present disclosure is directed to the novel design and incorporation of membranes for realizing new, highly efficient, and environmentally-friendly anti-biofouling membranes for water purification.

Methods and systems to achieve clean fuel processing systems in which carbon dioxide emissions (1) from sources (2) may be processed in at least one processing reactor (4) containing a plurality of chemoautotrophic bacteria (5) which can convert the carbon dioxide emissions into biomass (6) which may then be used for various products (21) such as biofuels, fertilizer, feedstock, or the like. Bacteria that reduce oxidized nitrogenous species (13) may be used to supply reduced nitrogenous compounds to the chemoautotrophic bacteria (5).

According to present disclosure, there is disclosed an algae growth and cultivation system that provides a cost-efficient means of producing algae biomass as feedstock for algae-based products, such as, biofuel manufacture, and desirably impacts alternative/renewable energy production, nutrient recovery from waste streams, and valued byproducts production. The system as discussed herein is an integrated systems approach to wastewater treatment, algal strains selection for byproducts production, and recycle of algal-oil extraction waste or additional algae harvested as feedstock for fertilizer production. Embodiments of a system as discussed herein present an economically viable algae production system and process that allows algae-derived products such as biofuels, fertilizer, etc. to compete with petroleum products in the marketplace.

Carbon dioxide capture systems in accordance with various embodiments of the present disclosure are provided. In one embodiment, an apparatus for capturing carbon emissions from a vehicle is provided, comprising: an exhaust feeder comprising a first end and a second end, wherein the first end connects to the vehicle and receives exhaust gases emitted from the vehicle; a housing connected to the second end and secured to an exterior surface of the vehicle, wherein the housing receives the exhaust gases emitted from the vehicle via the exhaust feeder; wherein the housing comprises: at least one gas deflector surface that directs the exhaust gases to a sorbent material configured to capture carbon dioxide from the exhaust gases; a detachable section that allows for removal and installation of the sorbent material; and an exit port that allows for release of residual gases after the sorbent material captures carbon dioxide.

The present invention relates to methods for improving carbon capture using entrained catalytic-particles within an amine solvent. The particles are functionalized and appended with a CO.sub.2 hydration catalyst to enhance the kinetics of CO.sub.2 hydration and improve overall mass transfer of CO.sub.2 from an acid gas.

In ethyl alcohol production using the self-fermentation of a microalga, a step of concentrating or collecting an algal body by centrifugal treatment, filtering treatment or the like is made unnecessary or simple to save labor for effort and equipment therefor is saved. The microalga belongs to Chlamydomonas sp., and is a variant strain which has an ability to produce ethyl alcohol under dark and anaerobic conditions and has acquired an ability to proliferate while aggregating. The microalga is proliferated and maintained under dark and anaerobic conditions to generate ethyl alcohol in this method for producing ethyl alcohol.