The invention relates to a photocatalytic oil-water separation material and a preparation method thereof, the method including the following steps: cleaning a base material and a metal-doped material, and drying for later use; preparing a mixed solution of an amine monomer and an acid-alkali buffer reagent, soaking the base material in the mixed solution, and reacting under an oscillation condition, to obtain the base material attached with amine monomer polymer; dissolving a soluble metal additive and an organic ligand reagent into an organic solvent, and performing ultrasonic stirring uniformly, to obtain a metal organic framework material (MOF) reaction solution with photocatalytic performance; and placing the metal-doped material, the base material attached with the amine and the MOF reaction solution into a reaction kettle for performing hydrothermal reaction, cleaning and drying the reacted base material, to obtain the photocatalytic oil-water separation material.

A method of demulsifying an emulsion with an ionic liquid having a nitrogen or phosphorus cation.

Methods for of processing an oxygen containing feedstock to an amine reacted liquid or solid phase with a different solubility, polarity and/or functionality may, in various embodiments, comprise steps of contacting the amine with an oxygen containing hydrocarbon with temperature to facilitate reactions to reduce the oxygen content and modulate the solubility, polarity and/or functionality of the products.

A method of producing biodiesel using a conduit contactor in fluid communication with a collection vessel includes: introducing a first stream including an alcohol proximate a plurality of fibers positioned within the conduit contactor and extending proximate to the collection vessel; introducing a second stream including an oil into the conduit contactor proximate to the plurality of fibers, wherein the second stream is in contact with the first stream; reacting the oil and the alcohol to for a single phase; receiving the single phase in the collection vessel; and separating biodiesel from the single phase.

A method may include: introducing a treatment fluid into a production fluid disposed in a surface well system, the treatment fluid comprising: a base fluid; and a supramolecular host guest product comprising: a treatment fluid additive comprising a surfactant; and a supramolecular host molecule, wherein the supramolecular host molecule is not covalently bonded to the treatment fluid additive; introducing the production fluid containing the treatment fluid into a production facility separator; and separating, in the production facility separator, at least a portion of the production fluid to form a water stream.

A method of recycling a direct emulsion wellbore fluid may include disrupting a direct emulsion comprising an aqueous external phase and an oleaginous internal phase, wherein the direct emulsion is stabilized by a surfactant composition; and separating the aqueous phase and the oleaginous phase.

Stillage solids concentration methods are disclosed wherein a solids concentration aid is added to a process stream mixture in a corn to ethanol process. The solids concentration aid may comprise a cationic polymer coagulant or flocculant or both, a starch based coagulant or flocculant or a biologically derived (i.e., plant or animal origin) coagulant or flocculant. Acrylamide/quaternary ammonium copolymers and homopolymeric polydiallyldimethyl ammonium chloride polymers are noteworthy examples of suitable solids concentration aids.

The present disclosure describes a method including: receiving input data from a gas and oil separation plant (GOSP), wherein: one or more demulsifiers is being injected into an emulsion to achieve a separation, a plurality of flow rates of water and the one or more demulsifiers are being measured inside the GOSP, the input data comprises the plurality of flow rates as well as temperatures corresponding to the plurality of flow rates, and determining, for each of the one or more demulsifiers, efficiencies of the separation based on the flow rates measured at corresponding temperatures; grouping respective efficiencies of separation according to a set of temperature ranges; and generating, for at least one temperature range, a histogram for the at least one temperature range; ranking the one or more demulsifiers according to the histogram; and providing a feedback to indicate a ranked order of the one or more demulsifiers.

Embodiments relate a demulsifier composition that includes a base demulsifier component and a supplemental demulsifier additive that is different from the base demulsifier component including, based on a total weight of the supplemental demulsifier additive, from 1 wt % to 30 wt % of at least one polyol block copolymer, from 1 wt % to 30 wt % of at least one alkoxylated alkyl phenol formaldehyde resin, and from 20 wt % to 98 wt % of at least one modified silicone polyether. The supplemental demulsifier additive is present in an amount from 10 ppm to 10,000 ppm in the demulsifier composition.

Metals, such as mercury, may be removed from glycol fluids by applying a sulfur compound having the general formula HS—X, wherein X is a heteroatom-substituted alkyl, cycloalkyl, aryl, and/or alkylaryl group either alone or in combination with or as a blend with at least one antifoam additive, at least one demulsifier and/or a buffering agent, to chelate the at least one metal and form a chelate complex of the sulfur compound with the at least one metal and then separating the chelate complex from the fluid.