A process for the reuse of oilfield drilling waste with an natural affinity for oil which has had at least a portion of the contaminants removed using a remediation technology. The drilling waste can be further refined to ensure the waste meets a desired particle size distribution and thereafter sent for reuse by mixing the drilling waste with hot bituminous tar and thereafter using the liquids phase in roofing materials. A method of mixing the drilling waste with conventional fillers is also described to create a blended mixture of drilling waste and conventional fillers to create a new hybrid filler which is mixed with hot bituminous tar for use in roofing materials.

A method of sorbing a PFAS compound from a contaminated environment can include admixing a modified clay sorbent with the environment. The modified clay can include a clay intercalated with a blend of mono-quaternary amine compound and di-quaternary amine compound.

A method of sorbing a PFAS compound from a contaminated environment can include admixing a modified clay sorbent with the environment. The modified clay can include a clay intercalated with a blend of mono-quaternary amine compound and di-quaternary amine compound.

A mixture for treating a hydrophobic surface and a method for treating hydrophobic surfaces is provided. The mixture comprises: a wetting agent comprising; a compound of Formula I:

R.sup.1((CH.sub.2CH.sub.2O).sub.nR.sup.2).sub.x  Formula I wherein: R.sup.1 is a core group derived from a linear, cyclic or branched polyol with 1-55 carbons or a linear, cyclic or branched polyamine with 1-22 carbons wherein hydrogens on the alcohol group or hydrogens on the amine group are replaced with (CH.sub.2CH.sub.2O).sub.n or R.sup.1 is defined by —R.sup.6(—C(═O)O—).sub.m; R.sup.2 is a hydrophobic group preferably selected from the group consisting of R.sup.3, the elements necessary to form an ester, specifically —COR.sup.4, or the elements necessary to form a urethane, specifically —CONHR.sup.5; R.sup.3-R.sup.5 are each independently an alkyl of 6-22 carbons, wherein the alkyl is a linear, cyclic or branched and preferably linear; n, on average is 4-100; x is 2-20; R.sup.6 represents a bond or a linear, cyclic or branched alkyl with 6-22 carbons; and m is 2-20.

The present disclosure provides a method of preparing a carbonaceous material capable of fixing arsenic and an application thereof. Through biomass pretreatment, biomass pyrolysis and arsenite fixation, a biochar activated by potassium carbonate and an arsenic-containing wastewater containing sulfur-containing substances are mixed and deoxidized, and an anaerobic culture is carried out, to fix arsenic by the biochar activated by potassium carbonate. The present disclosure solves the problems that arsenic is released from the soil and groundwater under anaerobic conditions, the ability of conventional passivatingagents to fix arsenic under anaerobic conditions is weakened, and the conventional carbonaceous materials not only cannot fix arsenic, but also accelerate the release of anaerobic arsenic.

The present disclosure provides a method of preparing a carbonaceous material capable of fixing arsenic and an application thereof. Through biomass pretreatment, biomass pyrolysis and arsenite fixation, a biochar activated by potassium carbonate and an arsenic-containing wastewater containing sulfur-containing substances are mixed and deoxidized, and an anaerobic culture is carried out, to fix arsenic by the biochar activated by potassium carbonate. The present disclosure solves the problems that arsenic is released from the soil and groundwater under anaerobic conditions, the ability of conventional passivatingagents to fix arsenic under anaerobic conditions is weakened, and the conventional carbonaceous materials not only cannot fix arsenic, but also accelerate the release of anaerobic arsenic.

A process is provided for separating hydrophobic material from a mixture of hydrophobic and hydrophilic material using peptide-based amphiphilic organogelators.

A process is provided for separating hydrophobic material from a mixture of hydrophobic and hydrophilic material using peptide-based amphiphilic organogelators.

The invention relates to a method for disinfecting soils or other agricultural growing media, characterised by comprising the following steps: obtaining a soil or other agricultural growing medium at their field capacity; treating the soil or medium at the field capacity of the previous step with ozonated water, wherein the ozonated water is prepared in situ with ozone-production equipment connected to the water supply; allowing a period of time to pass after the treatment with ozone; and inoculating the disinfected soil or agricultural medium with at least one species of beneficial microorganism.

An in-situ reagents injection system comprises a compressed air storage tank, a remediation reagents storage tank, an injection adjusting valve, an injection pipe, an upper sealing device and a lower sealing device. When the reagents injection is carried out, the compressed air is injected before the remediation reagents is injected, the porosity of the aquifer medium is increased by utilizing the air pressure expansion technology to form a relatively uniform dominant channel, and the remediation reagents is injected to realize uniform and efficient conveying of the reagents. The in-situ reagents injection system and method can make the homogeneous and efficient conveying of the remediation reagents, and ensure the full utilization of the remediation reagents, with low energy consumption of injection equipment, simple process, and flexible operation. The injection is performed in sections from top to bottom according to the steps to improve the in-situ reagents injection efficiency and remediation efficiency.