Carbon-doped graphitic carbon nitride (g-C.sub.3N.sub.4) compositions are synthesized from the chemical precursors melamine, cyanuric acid and barbituric acid. Phosphorus-doped g-C.sub.3N.sub.4 compositions are synthesized from the chemical precursors melamine, cyanuric acid and etidronic acid. Carbon- and phosphorus-doped g-C.sub.3N.sub.4 compositions, when in the presence of UV or visible light, can be used in water treatment systems to photocatalytically degrade persistent organic micropollutants such as pharmaceuticals and personal care products (PPCPs), endocrine disrupting compounds (EDCs), pesticides, and herbicides. Carbon- and phosphorus-doped g-C.sub.3N.sub.4 compositions can also be applied to surfaces of household and public items to kill protozoa, eukaryotic parasites, algal pathogens, bacteria, fungi, prions, viruses, or other microorganisms, preventing the transfer thereof between users.

Disclosed are methods, apparatuses and systems for the remediation of contaminated soils, groundwater, water, and/or waste using a combination of reagents. The disclosed methods may be used to treat various recalcitrant halogenated substances, such as perfluoroalkyls and polyfluoroalkyls. Particular combinations of reagents that may be used in the disclosed methods include but are not limited to: (1) persulfate, oxygen and ozone; (2) persulfate, salt, oxygen and ozone; (3) persulfate, phosphate, and/or oxygen; (4) persulfate, phosphate, oxygen and ozone; (5) persulfate, phosphate, salt and oxygen (6) persulfate, phosphate, salt, oxygen and ozone; (7) oxygen and salt; and (8) air and salt. The disclosed methods may include the transfer of contaminants from an aqueous phase to a foam prior to the destruction of the contaminants.

The present invention is directed to the removal of one or more selected target materials, in particular a physiologically active compound contaminant, from various streams using a rare earth fixing agent.

A water filter assembly includes a manifold mountable to a water conduit. An end of the water conduit is receivable between a manifold body and a mounting clamp of the manifold. A fastener is configured for drawing the manifold body and the mounting clamp together in order to clamp the water conduit to the manifold. A face seal is configured to be compressed between the manifold body and the mounting clamp when the fastener draws the manifold body and the mounting clamp together. An O-ring is positionable on the water conduit such that the O-ring extends between an inner surface of the manifold body and an inner surface of the mounting clamp.

The invention provides biocomposites alginate/chitosan beads integrated with magnetite nanoparticles and modified-surface magnetite derivate created and designed to remove from environmental waters and aquatic systems different types of organic persistent compounds such as benzophenone-3 (oxybenzone).

An oil-water separation membrane is described. The oil-water separation membrane comprises a porous metal sheet with a photocatalyst layer on one side and a layer of nanoparticles and a surfactant on the other side. The layer of nanoparticles and surfactant create a superoleophobic and superhydrophilic coating that allows passage of an aqueous phase and rejection of an oil phase. The photocatalyst layer, combined with UV irradiation, enables degradation of organic contaminants in the aqueous phase. The oil-water separation membrane may be used as part of an oil-water separation system, and a filtered water product may be recycled through the membrane to increase the removal of organic contaminants.

The present invention aims at improving the purification of toilet water from environmentally hazardous organic substances, such as drug molecules, by the use of enzymes. Thus the present invention relates to a deposit designed to be attached to the toilet, said deposit comprising enzymes that will be released upon flushing the toilet so that said enzymes may eliminate environmentally hazardous organic substances, such as drug molecules, present in the toilet water.

Disclosed are methods, apparatuses and systems for the remediation of contaminated soils, groundwater, water, and/or waste using a combination of reagents. The disclosed methods may be used to treat various recalcitrant halogenated substances, such as perfluoroalkyls and polyfluoroalkyls. Particular combinations of reagents that may be used in the disclosed methods include but are not limited to: (1) persulfate, oxygen and ozone; (2) persulfate, salt, oxygen and ozone; (3) persulfate, phosphate, and/or oxygen; (4) persulfate, phosphate, oxygen and ozone; (5) persulfate, phosphate, salt and oxygen (6) persulfate, phosphate, salt, oxygen and ozone; (7) oxygen and salt; and (8) air and salt. The disclosed methods may enhance destruction of organic contaminants in the liquid phase and may also control the rate of aerosol or foam formation relative to the rate of chemical oxidation and/or reduction/transfer.

The present invention aims at improving the purification of sewage water in water treatment systems, by the use of enzymes. Thus a filter comprising enzymes and a method for producing said filter are provided, as well as the use of said filter, a module system for comprising said filter, and use of said module system.

A method of exposing microorganisms to a condition wherein the condition facilitates or inhibits growth of a specific species of microorganisms or a specific consortium of microorganisms. The condition may also stimulate microorganisms to uptake a pollutant from a fluid and/or release the pollutant. Furthermore, the microorganisms may also be harvested and used as a foodstuff for human and animal consumption.