The present invention relates to a method for storing gaseous hydrogen, comprising the steps of producing methanoate (formate) through contacting gaseous hydrogen with carbon dioxide in the presence of a hydrogen dependent carbon dioxide reductase (HDCR), and thereby storing of said gaseous hydrogen. The HDCR and/or its complex is preferably derived from Acetobacterium woodii.

A method for processing algae-based products using flue gas heat includes mixing flue gas with water, receiving a heated gas in a first enclosure of a heat exchanger, receiving an algal paste in a second enclosure of the heat exchanger, introducing an organic solvent to the algal paste, extracting an algal oil and a plurality of algal shells from the algal paste by dissipating heat from the first enclosure to the second enclosure; and extracting the algal oil from the organic solvent and the algal shells.

Provided is a method for treatment of gas mixtures and an apparatus for carrying out a method for treatment of raw gas mixtures. More particularly, there is provided a method and an apparatus for treatment of gas mixtures, such as biogas or flare gas, and in particular to a method and an apparatus for removing contaminants, in particular H.sub.2S, from a gas mixture containing CH.sub.4 and H.sub.2S.

A computerized process for controlling an air purification system comprises a bioreactor in particular, the system may comprise a photobioreactor for treating urban air, in particular for CO.sub.2 removal. The system may be connected to the sanitation network and/or to a (drinking and/or municipal) water supply network. The connection and the drainage system may in particular maintain a fluidic isolation between the two types of networks. The system may optionally be equipped with measurement sensors and/or actuators that make it possible to control the internal activity of the bioreactor. Various control modes of a grid of bioreactors are described. Data on the status of the connected networks (e.g. water, sanitation, cooling, heating networks) contribute to the control of a network of geolocalized bioreactors. The software aspects are described. The supervision of the grid of bioreactors may in particular be carried out remotely via onboard communication devices.

Disclosed is a coating composition for preventing odor. The coating composition may include one or more types of odorless microorganisms selected from the group consisting of Caulobacter vibrioides, Bradyrhizobium diazoefficiens, Bradyrhizobium daqingense and Methylobacterium brachiatum or a culture solution thereof. Further provided is a method for preventing odor, and the method may include applying the coating composition for preventing odor. When a biofilm is formed from the microorganisms in the coating composition by coating an object on which an odor-causing microorganism can live, the inflow and the inhabitation of external microorganisms generating odor may be significantly blocked, thereby enabling odor to be effectively prevented.

A mobile emissions control system having an emission capturing system and emission control system is provided for diesel engines operated on ocean-going ships at-berth. The emissions control system may be mounted on a towable chassis or mounted on a barge, allowing it to be placed alongside ocean-going ships at-berth. A crane or boom transfers a duct of the emissions capturing system extending from the emissions control system to the ship to capture exhaust from its engine. Alternatively, the system may be mounted on an automated guided vehicle (AGV) equipped with a tower and a crane. The crane mounted on the AGV then lifts the duct forming part of the emissions capture system to the ship's exhaust system to capture exhaust from the ship's diesel engine and transfers it to the emissions control system, which cleans the exhaust and then passes clean air into the atmosphere through an exhaust outlet.

A method is presented for biological removal of contaminants like sulfide from ground waters and industrial waters. Sulfide oxidizing bacteria by biological oxidation oxidizes sulfides in water to produce soluble sulfates. The present invention uses a packed bed bioreactor configuration that uses packing material to maximize the concentration of sulfide oxidizing bacteria.

The present disclosure provides compositions, methods of use, and methods of creation for a population of transgenic plants derived from plant cells transformed with recombinant DNA for expression of heterologous proteins. In particular, the present disclosure provides compositions comprising indoor ornamental plants suited for the removal of volatile organic compounds such as formaldehyde, benzene, toluene, ethylbenzene and/or xylene from air. Also disclosed are transgenic seeds for growing a transgenic plant having the recombinant DNA in its genome and exhibiting enhanced VOC removal from air. Also disclosed are methods for generating seed and plants based on the transgenic events. Also disclosed are microbes selected for during directed evolution to have enhanced VOC removal from air capabilities. Also disclosed are methods and compositions for generating plant-microbiome pairings for enhanced VOC removal from air.

Provided are recombinant microorganisms having a foreign gene encoding a variant of a nitrous oxide reductase protein, a composition comprising the recombinant microorganism or the variant of a nitrous oxide reductase protein for use in removing nitrous oxide in a sample, a variant of a nitrous oxide reductase protein, and a polynucleotide encoding the variant.

The present invention provides an industrial volatile organic compounds (VOC) processing system that includes a first phase processing structure, a second phase processing structure, a sensor detection device and a computer. The first phase processing structure includes a spraying chamber having an array of sprinklers for circularly spraying lytic enzyme solution to the VOC. The second processing structure includes a biodegradation chamber wherein microbial nutrient solution is circularly used for nourishing microbes that gnaw the VOC particles. The sensor detection device includes two detectors, one placed in the inlet side, and the other one placed in the outlet side of the system, detecting the content of the organic gas and sending the data to the computer. The computer calculates and compares in a real time the ratio of the contents of the organic gas in the inlet side and the outlet side. The system according to the present invention effectively eliminate VOC by first applying lytic enzyme solution to VOC and then letting certain microbes gnaw the VOC particles. In this invention, both the lytic enzyme solution and the microbial nutrient solution are circularly used.