A culture system according to the present embodiment includes a supply unit, a discharge unit, a collection unit, and a housing. The supply unit supplies a culture vessel with a culture medium for culturing of cells. The discharge unit discharges liquid droplets for detaching the cells placed in the culture vessel. The collection unit that collects the cells which have been detached in the culture vessel. The housing has the culture vessel, the supply unit, the discharge unit, and the collection unit disposed therein. In the state in which the supply unit has been moved away from the fluid level of the culture medium, the housing is tilted to position the collection unit at a lower level than the supply unit, and then the culture medium and the cells are collected using the collection unit.

A method and apparatus for extracting CO.sub.2 from air comprising an anion exchange material formed in a matrix exposed to a flow of the air, and for delivering that extracted CO.sub.2 to controlled environments. The present invention contemplates the extraction of CO2 from air using conventional extraction methods or by using one of the extraction methods disclosed; e.g., humidity swing or electro dialysis. The present invention also provides delivery of the CO.sub.2 to greenhouses where increased levels of CO.sub.2 will improve conditions for growth. Alternatively, the CO.sub.2 is fed to an algae culture.

A biohydrogen production device of corn stalks based on synchronous saccharification and fermentation and a hydrogen production method thereof are provided. The biohydrogen production device has a vertical fermenter, an irradiation pretreatment unit, an enzymolysis saccharification unit, a dark fermentation unit, a photofermentation unit, a power supply box and a hydrogen storage tank. The method and device utilize the high specificity of different microorganisms to the substrate to combine the dark fermentation and the process of photofermentation hydrogen production. The method and device can be used for the preparation of hydrogen.

The invention relates to a process and an apparatus for the biotechnological production of a bioproduct. The process involves a first and second bioprocess carried out in a first and second bioreactor (2, 3), and a vessel (4). The first bioprocess is a carbon dioxide producing bioprocess resulting in the formation of the bioproduct, the second bioprocess a chemoautotrophic bioprocess in which CO.sub.2 produced in the first bioprocess is consumed by hydrogen oxidizing bacteria oxidizing H.sub.2 with O.sub.2 as electron acceptor. Electrolytically generated H.sub.2 and O.sub.2 are separated, and the O.sub.2 is fed directly into the second and/or first bioprocess, while H.sub.2 is first dissolved in a medium contained in the vessel (4). H.sub.2 saturated medium is then fed into the second bioprocess. Biomass produced in the second bioprocess is fed into the first bioprocess as an additional C and N source.

A system and method for vertically-oriented, modular, automated, emissions-controlled composting. In an embodiment, the system and method involve construction of a vertically-oriented set of composting modules comprising a receiving and offloading level, one or more composting bay levels, a feedstock staging level, a biofilter level, a vertical conveyor for uploading feedstock to the feedstock staging level, a freight and personnel elevator, and a leachate tank. This composting system and method reduces the land area required for composting, increases the capture of emissions from composting, and reduces the labor-intensive and heavy-equipment-intensive nature of current methods.

A biohydrogen production device of corn stalks based on synchronous saccharification and fermentation and a hydrogen production method thereof are provided. The biohydrogen production device has a vertical fermenter, an irradiation pretreatment unit, an enzymolysis saccharification unit, a dark fermentation unit, a photofermentation unit, a power supply box and a hydrogen storage tank. The method and device utilize the high specificity of different microorganisms to the substrate to combine the dark fermentation and the process of photofermentation hydrogen production. The method and device can be used for the preparation of hydrogen.

Process for producing biogas from a digestate obtained from a digester, said process comprising a step of recovering the digestate at the outlet of a digester, a post-digester or a storage tank; a step of separating the digestate into a solid digestate and a liquid digestate; a step of introducing the solid digestate into at least one dosed tank; a step of anaerobic digestion in the tank with neither heating nor mixing; and a step of recovering the biogas at the tank outlet.

A fermentation device includes an elongated container having an inlet opening at a first end face of the container, a discharge opening at a second end face of the container opposite the first, and an outlet opening for biogas. The device has a plurality of stirring devices and a drive device therefor. Each stirring device has at least one stirring shaft arranged transversely to a longitudinal axis of the container and can be rotated about a central axis of the stirring shaft via a drive device, and a stirring blade fixed to the shaft and protruding outwards. A method for operating the fermentation device includes introducing a substrate which contains organic material, moving and mixing the substrate in the container via the stirring devices, discharging treated material, and removing biogas via the outlet opening. Solely fresh substrate, untreated by the fermentation device, is supplied via the inlet opening.

A composting bin and method for a vertically-oriented, modular, automated, emissions-controlled composting. In an embodiment, the system and method involve construction of a vertically-oriented set of composting modules comprising a receiving and offloading level, one or more composting bay levels, a feedstock staging level, a biofilter level, a vertical conveyor for uploading feedstock to the feedstock staging level, a freight and personnel elevator, and a leachate tank. This composting system and method reduces the land area required for composting, increases the capture of emissions from composting, and reduces the labor-intensive and heavy-equipment-intensive nature of current methods.

A high-load organic wastewater dark fermentation biohydrogen production device and a hydrogen production method are provided. An exhaust port of the production device is communicated with a gas collection region through a gas pipe; a return inlet is arranged at a bottom; a baffle plate is arranged in a two-phase separation device; the baffle plate has a helical shape that makes influent water form a helical centripetal water flow path; one end of an inert gas communicating pipe is connected with an air hole at a bottom of the gas collection region; the other end of the inert gas communicating pipe is communicated with an air intake disc; the inert gas communicating pipe is provided with a connecting hole and an air pump; and the gas collection region is connected with a gas buffer tank and a hydrogen storage tank in sequence. A two-phase separation unit is also provided.