A method of water treatment includes flowing water that includes nitrogen and phosphorus compounds through a sorption media composition within at least one chamber of a water treatment system. The composition comprises iron filings comprising at least 5 volume (vol) % of the composition, sand particles comprising at least 10 vol % of the composition; and clay particles comprising at least 2 vol % of the composition. The iron filings, sand particles, and clay particles are mixed together. During the flowing the clay particles attract the nitrogen and phosphorus compounds which become absorbed onto a surface of the iron filings and the clay resulting in a removal of the nitrogen and phosphorus compounds and the generation of reaction products. Nitrogen and phosphorus are then recovered from the reaction products.

Disclosed are a preparation method of a carbon dioxide capture agent and an application thereof. The method includes: mixing a graphite dispersion, an organic acid solution, a metal salt solution and a silica sol to obtain an organic-inorganic composite gel; standing and aging the organic-inorganic composite gel, drying the same and then carbonizing the same by microwave in a mixed atmosphere of inert gas and sulfur dioxide to obtain an intermediate product; and subjecting the intermediate product to acid washing or alkali washing to obtain a defective carrier, then mixing the defective carrier with an amine substance for ultrasonic treatment and drying to obtain the carbon dioxide capture agent.

A method for manufacturing a water absorption treatment material made of a plurality of grains includes a preparing step, a pulverizing step, a core portion forming step, and a coating portion forming step. The preparing step is a step of preparing a paper powder to which water-absorbent polymers adhere, the paper powder being derived from a sanitary product. The pulverizing step is a step of pulverizing remaining polymers using a pulverizer. The core portion forming step is a step of forming a core portion constituting each of the grains The coating portion forming step is a step of forming a coating portion so as to cover the core portion, the coating portion containing the paper powder, and the remaining polymers pulverized in the pulverizing step. In the pulverizing step, the remaining polymers left in a state of adhering to the paper powder are subjected to the pulverizer.

Disclosed are a preparation method of a carbon dioxide capture agent and an application thereof. The method includes: mixing a graphite dispersion, an organic acid solution, a metal salt solution and a silica sol to obtain an organic-inorganic composite gel; standing and aging the organic-inorganic composite gel, drying the same and then carbonizing the same by microwave in a mixed atmosphere of inert gas and sulfur dioxide to obtain an intermediate product; and subjecting the intermediate product to acid washing or alkali washing to obtain a defective carrier, then mixing the defective carrier with an amine substance for ultrasonic treatment and drying to obtain the carbon dioxide capture agent.

There is provided an oil absorbent pad for cleaning oil on a surface having an oil absorbent body having an upper surface and a lower surface, the body being formed from fiber recovered from recycled tires, and at least one of the upper surface and the lower surface is an outermost layer of the oil absorbent pad.

A method of water treatment includes flowing water that includes nitrogen and phosphorus compounds through a sorption media composition within at least one chamber of a water treatment system. The composition comprises iron filings comprising at least 5 volume (vol) % of the composition, sand particles comprising at least 10 vol % of the composition; and clay particles comprising at least 2 vol % of the composition. The iron filings, sand particles, and clay particles are mixed together. During the flowing the clay particles attract the nitrogen and phosphorus compounds which become absorbed onto a surface of the iron filings and the clay resulting in a removal of the nitrogen and phosphorus compounds and the generation of reaction products. Nitrogen and phosphorus are then recovered from the reaction products.

A water absorbing material which can reduce burden on the environment in disposal and can be manufactured at low cost, and a manufacturing method thereof are provided. The water absorbing material contains paper obtained by separating polyvinyl chloride from vinyl chloride wallpaper as a raw material.

A process is provided for converting discarded rubber, e.g., rubber crumb, into absorbent material. The process comprises extruding a mixture of discarded rubber and oxidizer(s) under progressively increasing temperature to reach a temperature above 250 C. The extrudate may undergo a secondary oxidation. The partially devulcanized granular rubber formed is useful as absorbent material for hydrocarbons, e.g., in remediation of contaminated soil and oil spills.

Superabsorbent polymer material comprising cross-linked polyacrylic acid and salts thereof. The superabsorbent polymer material further comprising at least 3.0 weight-%, based on the total weight of the superabsorbent polymer material, of soluble polyacrylic acid polymers. A method for making such superabsorbent polymer materials is also disclosed.

A water absorption treatment material includes a core portion and a coating portion. The core portion is approximately circular column-shaped and has a side surface, a first bottom surface, and a second bottom surface. The coating portion is provided so as to cover the core portion. A region of 80% or more of the side surface of the core portion is covered by the coating portion. A region of 80% or more of the first bottom surface of the core portion is exposed without being covered by the coating portion.