Methods and systems for capture of CO.sub.2 from a hydrated gaseous stream are described. Systems can be utilized for direct air capture of CO.sub.2 and incorporate a low energy temperature-vacuum swing adsorption (TVSA) process. A TVSA process can include a multi-step CO.sub.2 capture bed regeneration process that includes depressurization of the bed, heating of the bed, venting and purging of the bed, and cooling of the bed. Multiple beds can be cycled between CO.sub.2 capture and regeneration, during which captured CO.sub.2 is recovered. Off-gas from a CO.sub.2 capture bed can be used in regenerating a parallel bed for increased efficiency.

There is provided a process for growing a phototrophic biomass in a reaction zone. The process includes treating an operative carbon dioxide supply-comprising gaseous material feed so as to effect production of a carbon dioxide-rich product material. The carbon dioxide concentration of the carbon dioxide-rich product material is greater than the carbon dioxide concentration of the operative carbon dioxide supply-comprising gaseous material feed. Production of at least a fraction of the operative carbon dioxide supply-comprising gaseous material feed is effected by a gaseous exhaust material producing process. At least a fraction of the carbon dioxide-rich product material is supplied to the reaction zone so as to effect growth of the phototrophic biomass by photosynthesis in the reaction zone.

Systems, methods and devices for the production of renewable natural gasses are provided.

An energy generation system using biomass includes a first information generation unit that generates the first information indicating that a distributor handling food has disposed of food waste biomass, an energy generation device that generates energy and the like using biomass collected from the distributor, a second information generation unit that generates the second information indicating that energy and the like have been generated using biomass collected from the distributor, a third information generation unit that obtains the first information and the second information and generates the third information indicating generation of at least one of energy and energy sources by collecting biomass disposed by the distributor, and a display unit that displays the third information generated by the third information generation unit.

A technique to desalinate seawater using melanin-concentrated solar energy wherein the melanin is extracted from a local isolate Aspergillus niger. A device consists of two fixed upper and lower containers with same volume of seawater in both, with or without melanin powder dissolved in the lower container at rate of 0.17 gm of melanin powder per 10 ml of water. The device is put outdoors under direct sunlight during daytime, circular water droplets free of salt starts to appear on the external bottom of upper container. Water droplets are collected by a sterile glass rod, pH of droplets water is about 7.1. Yield of fresh water is approximately 10 ml droplets water from 600 ml seawater per hour; after 24 hours day and night incubation, seawater in the upper container dries out leaving salt crystals. Yield of 1000 m3 seawater is 100 m3 freshwater (1000 L seawater yield 100 L freshwater).

A system comprising a collocated thermal plant, water source, CO.sub.2 source and biomass growth module is disclosed. A method of improving the environment by utilizing the system is disclosed.

Embodiments of the present invention may provide fluid flow coordinators, passive flow field modifiers, or even inwardly protruding helical spines which can be used in continuous, scalable, low energy usage, bioreactor systems perhaps to provide optimal mixing of microorganisms with nutrients, gases, or the like or even to move microorganisms, such as algae, in and out of light for effective and optimal growth.

The invention relates to a device and to a method for sequestering atmospheric carbon dioxide using at least one air capture module in conjunction with a bioreactor equipped with an autotrophic microorganisms.

An apparatus is provided for producing methanol from organic material, wherein the apparatus includes: (i) an anaerobic digestion arrangement for receiving the organic material and for anaerobically-digesting the organic material in oxygen-depleted conditions to generate an anaerobic digestion gas (AD gas) comprising at least methane, and carbon dioxide; (ii) a pressure swing absorption (PSA) arrangement for the removal of excess carbon dioxide; (iii) a chemical reaction arrangement for reacting the methane gas with water vapour and carbon dioxide in a stoichiometric condition of the reaction, CO2+3CH4+2H2O=4CH3OH, between methane steam reforming and methane dry reforming to generate a synthesis gas, and converting the synthesis gas to methanol; and (iv) an recovery arrangement for recovering unreacted methane and feeding the recovered unreacted methane into the exit stream from the anaerobic digestion arrangement.

An apparatus is provided for producing methanol from organic material, characterized in that the apparatus includes

an anaerobic digestion arrangement for receiving the organic material and for anaerobically-digesting the organic material in oxygen-depleted conditions to generate methane gas; and
a chemical reaction arrangement for reacting the methane gas with water vapour and carbon dioxide in a stoichiometric condition (Eq. 4) between methane steam reforming and methane dry reforming to generate methanol.

The apparatus is operable to support a stoichiometric reaction as follows:

CO.sub.2+3CH.sub.4+2H.sub.2O=4CH.sub.3OH  Eq. 4

The chemical reaction arrangement is operable to provide the stoichiometric condition (Eq. 4)

at a first stage for steam reforming at a pressure in a range of 10 Bar to 30 Bar, and at a temperature in a range of 750° C. to 950° C.; and
at a second stage of methanol synthesis at a pressure in a range of 50 Bar to 100 Bar, and at a temperature in a range of 200° C. to 250° C.

Optionally, a catalyst arrangement is employed for at least the second stage.