Culture systems and methods of using same. The systems include a housing defining an inner space. The inner space includes a headspace and at least a portion of a reservoir. A surface for immobilizing cells is moveable between the headspace and the reservoir. The systems can be used for coculturing methanotrophs and phototrophs for processing biogas and wastewater, particularly from anaerobic digesters.

A system for removing undesirable compounds from contaminated air includes a biofilter having porous glass media. Hydrogen sulfide is removed from contaminated air by passing the contaminated air through the biofilter.

Methods and systems are provided for removing a component from air. A microfluidic chip comprising a fluid flow path in fluid communication with at least one surface comprising at least one phototrophic organism is provided. Additionally, air is brought in contact with the at least one surface comprising said at least one phototrophic organism. Further, said component is removed from said air with said at least one phototrophic organism.

The present disclosure provides compositions and methods for using recombinant C1 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.

Processes for treatment of spent alkaline stream is disclosed. The process includes passing a spent alkaline stream comprising one or more sulfide compounds and one or more organic compounds to a sulfide oxidation reactor for partial oxidation of the one or more sulfide compounds to provide an effluent stream comprising one or more thiosulfate compounds. The effluent stream is passed to a biological treatment unit to oxidize the one or more thiosulfate compounds to one or more sulfate compounds and biodegrade the one or more organic compounds to carbon dioxide and water to provide a treated alkaline stream.

Provided are a protein variant of haloacid dehalogenase hdl4a and a method of reducing a concentration of a fluorine-containing compound in a sample using the protein variant.

Atmospheric carbon has risen above 400 parts per million (ppm) crossing a threshold that endangers climate stability. Greenstone Device biotechnology enables consumers, businesses, municipalities and nations to mitigate their carbon output by providing a platform for capturing emitted carbon directly from the atmosphere, and converting that carbon into organic biomass fertilizer.

A carbon abatement system includes at least one carbon abatement panel including a carbon abatement material. The at least one carbon abatement panel is rotatable about an axis to maximize exposure of the carbon abatement material to sunlight.

A method for producing methane by biological conversion of carbon dioxide is performed using a symbiosis between one or more methane-generating bacteria and: (i) one or more hetero-autotrophic cyanobacteria and/or microalgae, or (ii) one or more sulfobacteria and/or acetobacteria, wherein the hetero-autotrophic cyanobacteria and/or microalgae, or the sulfobacteria and/or acetobacteria, produce the molecular hydrogen required for the conversion of carbon dioxide into methane performed by the methane-generating bacteria.

Methods and system are provided for an arrangement having a combustion engine producing an exhaust gas flow, and an exhaust system connected to the combustion engine for receiving the exhaust gas flow, having a particle filter as exhaust gas aftertreatment device, and a feed device positioned to introduce a micro-organism capable of breaking down carbon-containing compounds directly to an exhaust passage receiving the exhaust gas flow.