The filter of a gas sensor comprises an inorganic porous support supporting both an organic sulfonic acid compound including sulfo group (—SO3H) and a Lewis acid having at least a metal element of transitional metal elements, Al element, Ga element, In element, Ge element, and Sn element. The Lewis acid loaded in the inorganic porous support adsorbs low concentration siloxanes. The organic sulfonic acid compound including sulfo group polymerizes adsorbed siloxanes in the filter so as not to desorb from the filter.

A system including biogas purification and provides biogas as feedstock to a solid oxide fuel cell. The biogas purification treatment process provides a polished biogas that is substantially free of carbonyl sulfides and hydrogen sulfide. The system uses a biogas treatment apparatus, that includes apparatus such as a packed columns, comprising copper oxide or potassium permanganate packing material, and an activated carbon component configured to treat the biogas by polishing it to remove carbonyl sulfides and deleterious trace residues, such as hydrogen sulfide, that were not removed by any prior bulk H2S removal steps. In addition, an oil removal device is used to remove any entrained fine oil droplets in the biogas. A polished biogas having in the range of 60% methane is charged to the fuel cell. Electricity generated may be fed into a grid or used directly as energy to charge electrical-powered vehicles, for example. Energy credits are tracked in real time and are appropriately assigned.

An oxygen generation device having a compressed air supply device, air cooling coil, a fan, pneumatic valve system, a housing, at least one media insert, an on-off switch, a printed circuit board, and a touch screen. The pneumatic valve system includes an air inlet port, a first air outlet port connected to the inlet of the first media insert, a second air outlet port connected to the inlet of the second media insert. The air inlet port receives compressed air from the compressed air supply device and alternatingly provides the compressed air to one of the first media insert and the second media insert. The lower housing includes check valve ball moveable between the first position and the second position and alternatingly controlling a flow of compressed air through the first media insert and the second media insert.

A system including biogas purification and provides biogas as feedstock to a solid oxide fuel cell. The biogas purification treatment process provides a polished biogas that is substantially free of carbonyl sulfides and hydrogen sulfide. The system uses a biogas treatment apparatus, that includes apparatus such as a packed columns, comprising copper oxide or potassium permanganate packing material, and an activated carbon component configured to treat the biogas by polishing it to remove carbonyl sulfides and deleterious trace residues, such as hydrogen sulfide, that were not removed by any prior bulk H2S removal steps. In addition, an oil removal device is used to remove any entrained fine oil droplets in the biogas. A polished biogas having in the range of 60% methane is charged to the fuel cell. Electricity generated may be fed into a grid or used directly as energy to charge electrical-powered vehicles, for example. Energy credits are tracked in real time and are appropriately assigned.

Devices and methods for atmospheric water harvesting may be useful to obtain drinking water from air of moderate humidity, in a process driven directly by solar energy. Devices feature a recirculating stream of a fluid, such as air, and include heat recuperation to heat fluid in one portion of the stream using heat contained in another portion of the stream. Passive heat sinking is sufficient to condense liquid water, without need for refrigeration. The objective of the technologies and inventions is to enable affordable household products that improve drinking water access, with a focus on those currently without access to safely managed drinking water.

The invention relates to a process and a plant for removing thiols from synthesis gas. Thiols and optionally thiophene and carbon disulfide are absorbed in a dedicated absorption stage with methanol as physical absorption medium. Methanol laden with at least thiols is freed of thiols in a stripping stage with methanol vapours as stripping gas and the methanol vapours-containing thiols are freed of methanol in a scrubbing stage. The process according to the invention minimizes methanol losses and the amounts of coolant required for the process.

The invention relates to a method for separating chlorine from a gaseous anode outlet stream mass flow of an electrochemical cell reactor. In a first aspect, the method makes use of an absorption step, wherein an anode outlet stream mass flow of the electrochemical cell reactor is exposed to an organic solvent being essentially immiscible with water for achieving an exergy-efficient separation of chlorine and hydrogen chloride. In a further aspect, the method makes use of absorption step, wherein the anode outlet stream mass flow is exposed to an ionic liquid, wherein the hydrogen chloride is dissolved in said ionic liquid, thereby forming a gas flow containing essentially chlorine and a solution mass flow comprising the ionic liquid and the hydrogen chloride. The hydrogen chloride is desorbed from the solution mass flow in a desorption step. In another aspect, the method makes use of a distillation step, wherein the anode outlet stream mass flow is separated at a static pressure of at least 2 bar for an exergy-efficient separation.

An odor filtering lid assembly includes a lid that is positionable on a cooking pot and that has female threads which are integrated into a perimeter of the lid. A first disk has a plurality of first air holes each extending through the first disk to pass air through the first disk. The first disk has male threads integrated into the first disk which threadably engaging the female threads in the lid for removably attaching the first disk to the lid. An air filter is positioned against the first disk to filter odors from air passing through the air filter. A second disk has a plurality of second air holes each extending through the second disk to pass air through the second disk. The second disk is positionable against the first disk such that the air filter is positioned between the first disk and the second disk.

An apparatus is for cleaning flatulence of obnoxious odor, infectious virus and/or bacteria, and other contaminants. It can be mounted underneath a seat or bed provided with a flatulence collecting means. Flatulence is drawn through a series of chambers with charcoal provided in a first chamber for removing the obnoxious odor, copper wool provided in a second chamber having plurality of maze-like chambers for capturing and exterminating virus and/or bacteria; and a final chamber having sanitizing mist for eliminating contaminants.

A hybrid aqueous gas separation/gas compression/potential energy storage system designed to be operated in flowing water systems with aqueous gas separation and aqueous downflow compression arranged between upper and lower discharge elevations (water head), or in a simple pump around scenario where circulation is provided by water circulation pumps. The flowing water assists in reducing/eliminating power demand for compression of gases to be separated aqueously and supports circulation within the aqueous gas separation system. The overall system helps support lower cost carbon dioxide (CO2) capture from various sources achieving net-zero-carbon, net-negative-carbon configurations, and beneficial reuse of CO2. The system can be configured on-land (in well/shaft, with circulation pumps, or coupled with pumped storage) or off-shore (partly submerged, using circulation pumps).