A process for boron removal from feed water. The process includes the steps of introducing a stream of feed water with sodium borate salt or calcium borate salt therein to an ion exchange vessel containing boron-selective resin modified with potassium sulfate or sodium sulfate. The feed water is reacted with the boron-selective resin modified with sodium sulfate or potassium sulfate. The ion exchange resin in the ion exchange vessel is periodically regenerated.

A method to reduce or eliminate N-heterocycles, the method providing one or more environmentally benign chelators (EBCs) to an aqueous cooling system, the aqueous cooling system having at least one N-heterocycle in the presence of a halogenating or non-halogenating oxidizer. A method to reduce or eliminate AOX, the method providing one or more environmentally benign chelators (EBCs) to an aqueous cooling system, the aqueous cooling system having at least one AOX-containing species in the presence of a halogenating biocide.

A system for remediation of perfluoroalkyl substances (PFASs) has a multiplicity of β-cyclodextrins (β-CDs) and/or modified β-CDs combined with a vehicle additive, and a delivery device. Modified β-CDs can contain a single amine functionality at a single primary carbon or single secondary carbon of the β-CD. The vehicle additive can be powdered activated carbon (PAC). The delivery device is a column, a pouch, a packet, or a sheet that can permit the contacting of a fluid environment with the β-CDs and vehicle additive. The system of remediation can be used for a fluid environment or for biological organisms. CD-based fluorescent sensors can detect PFASs in the environment.

Disclosed herein are clusters compounds that include at least one substituted amine sulfate and at least one substituted amine bisulfate molecule. The substituted amine sulfate molecule and the substituted amine bisulfate molecule may each include an ammonium moiety with at least one alkyl substituent. Optionally, the alkyl substituent can include 1 to 20 carbon atoms, 1 to 10 carbon atoms, or 1 to 6 carbon atoms. For example, the alkyl substituent can be a methyl, ethyl, propyl, butyl, or pentyl group. In some examples, the substituted amine sulfate molecule and the substituted amine bisulfate molecule each include an ammonium moiety with at least two alkyl substituents. Optionally, the two alkyl substituents are the same. Alternatively, however, the two alkyl substituents can be different.

The invention relates to a method for decontaminating an aqueous liquid medium containing molecular micropollutants or a surface contaminated with micropollutants using nucleolipid compounds.

Methods for treating wastewater in conjunction with subterranean operations with a wastewater treatment additive. In some embodiments, the methods include providing wastewater recovered from at least a portion of a subterranean formation, wherein the wastewater includes water and an organic foulant material, and introducing a wastewater treatment additive that includes an alcohol ethoxylate surfactant into the recovered wastewater.

A living engineered biofilm material comprises microbial cells embedded in a protective extracellular matrix comprising a fusion protein of an amyloid domain and a contaminant binding domain operative to bind a contaminant of a water source, and thereby facilitate decontamination of the water source.

Disclosed is a method for treating water, including the extraction of at least two ionic species, the ionic species including an anionic species and a cationic species and being present in the water to be treated, the method especially including a step of mixing a liquid hydrophobic organic phase and the water to be treated, the water to be treated being in the liquid state, in order to subsequently obtain liquid treated water and a hydrophobic liquid organic phase loaded with the ionic species, and a step of thermal regeneration of the organic phase loaded with chemical species. Also disclosed are compounds and compositions that can be used in the method.

Residuals, such as slag particles, from iron- and/or steel-making, and/or water-leached eluates thereof, are added directly to a conventional or multi-staged anaerobic digester or other sewage sludge or biosolid handling process. The slag particles or other residuals sorb, sequester, immobilize, or otherwise promote the removal of phosphorus and/or sulfur from wastewater, sludge, or biosolids being treated, such that the associated aqueous phase concentrations of phosphorus and sulfur are significantly reduced.

Disclosed therein are the methods of cleaning an automated recirculation system or equipment and using the waste effluent produced therefrom for use without the need to reduce the conductivity of such waste effluent prior to use. The method comprises cleaning the automated recirculation system or equipment with a cleaning solution having a conductivity of up to 8 mS/cm at 25° C., and generating a waste effluent. The waste effluent may be used as irrigation water without reducing conductivity of the waste effluent prior to irrigation use. Suitable automated recirculation systems or equipment may be those used in the processing operation of a processed food, dairy, brewing, or beverage. The automated recirculation system may be a clean-in-place (CIP) system.