a method of treating aqueous wellbore fluids, comprising (a) converting one or more multivalent cations in a multivalent cation-containing aqueous fluid to form a mixture comprising one or more insoluble compounds and a treated aqueous fluid, (b) separating the treated aqueous fluid from the one or more insoluble compounds, and (c) contacting the treated aqueous fluid with a sulfide-containing aqueous fluid to form a compatibilized aqueous fluid, wherein the multivalent cation-containing aqueous fluid, the sulfide-containing aqueous fluid, or both were recovered from wellbores prior to (c).

a method of treating aqueous wellbore fluids, comprising (a) converting one or more multivalent cations in a multivalent cation-containing aqueous fluid to form a mixture comprising one or more insoluble compounds and a treated aqueous fluid, (b) separating the treated aqueous fluid from the one or more insoluble compounds, and (c) contacting the treated aqueous fluid with a sulfide-containing aqueous fluid to form a compatibilized aqueous fluid, wherein the multivalent cation-containing aqueous fluid, the sulfide-containing aqueous fluid, or both were recovered from wellbores prior to (c).

One aspect of the present invention relates to a waste liquid treatment composition for treating a waste liquid containing a body fluid to separate the waste liquid into a supernatant and an aggregate in a container. The waste liquid treatment composition comprises: a solid flocculant having at least one group selected from the group consisting of an OH group, an NH group, and an FH group; and a solid compound having at least one group selected from the group consisting of an OH group, an NH group, and an FH group.

A method of purifying a plurality of metal oxide particles produced from a synthesis process comprising the step of washing a plurality of metal oxide particles in a first solvent composition comprising of at least one aliphatic ether, and at least one flocculant. In one embodiment, the plurality of metal oxide particles are iron oxide particles produced from a thermal decomposition synthesis process between an iron-oleate complex and oleic acid in 1-octadecene, wherein the first solvent composition comprises a 1:1 (vol/vol) ratio of an aliphatic ether in the form of diethyl ether and a flocculant in the form of methanol. The washed iron oxide particles are further washed in a second solvent composition comprising a 1:1 (vol/vol) ratio of hexane and ethanol, and then finally dispersed in hexane. The resulting iron oxide particles find use as a contrast agent for magnetic resonance imaging (MRI) or as magnetic particles in magnetic separation, magnetism-directed targeting or magnetism-induced heating.

A method of purifying a plurality of metal oxide particles produced from a synthesis process comprising the step of washing a plurality of metal oxide particles in a first solvent composition comprising of at least one aliphatic ether, and at least one flocculant. In one embodiment, the plurality of metal oxide particles are iron oxide particles produced from a thermal decomposition synthesis process between an iron-oleate complex and oleic acid in 1-octadecene, wherein the first solvent composition comprises a 1:1 (vol/vol) ratio of an aliphatic ether in the form of diethyl ether and a flocculant in the form of methanol. The washed iron oxide particles are further washed in a second solvent composition comprising a 1:1 (vol/vol) ratio of hexane and ethanol, and then finally dispersed in hexane. The resulting iron oxide particles find use as a contrast agent for magnetic resonance imaging (MRI) or as magnetic particles in magnetic separation, magnetism-directed targeting or magnetism-induced heating.

A process for treating water contaminated with refractory organic matter, such as per- and polyfluoroalkyl substances (PFASs), comprising the following steps: (a) lowering the pH of the water for hydrolysis of organic matter; (b) subjecting the water with lowered pH to catalytic reduction by zero valent iron for organic matter degradation; (c) optionally aerating the water to oxidise the iron to ferric hydroxide; (d) optionally clarifying the water; and (e) optionally a catalytic advanced oxidation step. A system for conducting the process is also disclosed.

The present invention provides random multi-component polymers, methods to prepare the random multi-component polymers, methods for removing soluble species or insoluble particles from an aqueous solution, and methods for removing soluble species or insoluble particles from an aqueous solution in the human body

The present invention provides random multi-component polymers, methods to prepare the random multi-component polymers, methods for removing soluble species or insoluble particles from an aqueous solution, and methods for removing soluble species or insoluble particles from an aqueous solution in the human body

a method of treating aqueous wellbore fluids, comprising (a) converting one or more multivalent cations in a multivalent cation-containing aqueous fluid to form a mixture comprising one or more insoluble compounds and a treated aqueous fluid, (b) separating the treated aqueous fluid from the one or more insoluble compounds, and (c) contacting the treated aqueous fluid with a sulfide-containing aqueous fluid to form a compatibilized aqueous fluid, wherein the multivalent cation-containing aqueous fluid, the sulfide-containing aqueous fluid, or both were recovered from wellbores prior to (c).

The invention relates to a method and an apparatus for separating lignocellulose particle fraction (3) and lignin particle fraction (4), in which crude lignin (1) formed from starting material (6) comprises lignocellulose particles and lignin particles. According to the invention, the method comprises adding stabilizing chemical (11) and/or hydrophobic chemical (12) into the crude lignin (1) in at least one step, and treating the crude lignin by separating the lignin particle fraction (4) and lignocellulose particle fraction (3) from each other in at least one separation step (2,8,9,10). Further, the invention relates to a lignocellulose particle fraction and a lignin particle fraction and their uses.