Abstract: A composition for groundwater remediation includes an iron-modified liquid activated carbon which includes a plurality of particles of liquid activated carbon, iron disposed on each surface of the plurality of particles of liquid activated carbon, and an aqueous fluid. A method to produce a composition for groundwater remediation includes producing a liquid activated carbon, and modifying the liquid activated carbon with iron to produce an iron-modified liquid activated carbon. A method for in-situ groundwater remediation includes utilizing a series of chemical injectors to inject an optional first zone with a commercial oxidant and utilizing a series of chemical injections to inject a second zone reactive barrier with an iron-modified liquid activated carbon.

Abstract: An adsorption composition that includes a treatment agent including a material having an oxidized surface functionality and a carrier fluid are described. A method of preparing an adsorption composition including processing a material derived from at least one component of a date tree to provide a processed date tree material, treating the processed date tree material with a first treatment to produce a treated date tree material, reacting the treated date tree material with one or more oxidizing agents to form a treatment agent, and suspending the treatment agent in a carrier fluid is also described. Further, a method of adsorbing one or more compounds from a water-based fluid including introducing an adsorption composition to a water-based fluid containing one or more organic compounds contacting the adsorption composition with the one or more organic compounds and adsorbing the one or more organic compounds on the treatment agent is also described.