A desulfurization system has an oxidation process unit, and a multi-stage, liquid-liquid extraction unit in series with the oxidation process unit. The multi-stage, liquid-liquid extraction unit spits a fuel input from the oxidation process unit into a desulfurized fuel that is output for use, and a by-product. A solvent/sulfur/hydrocarbon separation process unit receives the by-product from the multi-stage, liquid-liquid extraction unit.

A desulfurization system has an oxidation process unit, and a multi-stage, liquid-liquid extraction unit in series with the oxidation process unit. The multi-stage, liquid-liquid extraction unit spits a fuel input from the oxidation process unit into a desulfurized fuel that is output for use, and a by-product. A solvent/sulfur/hydrocarbon separation process unit receives the by-product from the multi-stage, liquid-liquid extraction unit.

A filtration system includes a pre-filter device configured to strain contaminants from liquid. The pre-filter device includes a strainer body, a strainer sleeve secured to the strainer body, and a fastener configured to pass through the strainer sleeve to secure the pre-filter device to a container.

A filtration system includes a pre-filter device configured to strain contaminants from liquid. The pre-filter device includes a strainer body, a strainer sleeve secured to the strainer body, and a fastener configured to pass through the strainer sleeve to secure the pre-filter device to a container.

A rare earth coated membrane is beneficial to aid in the separation of contaminants, such as anions containing phosphorous, anions containing arsenic, PFAS, and mixtures thereof. Membranes with the rare earth coating or treatment can have larger pore sizes than would be expected to remove these contaminants. Disclosed herein are methods for treating or coating the membrane to provide the rare earth coated membrane. The coated membranes can be used to remove contaminants, such as anions containing phosphorous, anions containing arsenic, and PFAS, from liquid feeds, such as water or water-based feeds.

Apparatus for in-line liquid exchanging a biomolecule-containing liquid is provided. The apparatus comprises a means for mixing at least two liquids comprising a multiple inlet flow-controller, the means for mixing also comprising an outlet in fluid connection with a tangential flow filtration device configured in single-pass mode.

Apparatus for in-line liquid exchanging a biomolecule-containing liquid is provided. The apparatus comprises a means for mixing at least two liquids comprising a multiple inlet flow-controller, the means for mixing also comprising an outlet in fluid connection with a tangential flow filtration device configured in single-pass mode.

A method for removing PFAS from a PFAS-containing aqueous phase, comprising adding to said aqueous phase a surfactant composition comprising at least one cationic surfactant, to allow the surfactant to form micelles in said aqueous phase, and bringing said micelle-containing aqueous phase in contact with an ultrafiltration membrane under pressure, to obtain a permeate flow aqueous phase having a reduced concentration of PFAS.

A method for removing PFAS from a PFAS-containing aqueous phase, comprising adding to said aqueous phase a surfactant composition comprising at least one cationic surfactant, to allow the surfactant to form micelles in said aqueous phase, and bringing said micelle-containing aqueous phase in contact with an ultrafiltration membrane under pressure, to obtain a permeate flow aqueous phase having a reduced concentration of PFAS.

The disclosure provides an integrated separation unit for microplastics in the coastal sediments and a collection method of microplastics, belonging to the technical field of water treatment. The unit includes: a holder, a separation cylinder, a collection bottle, a central baffle plate, a baffle plate control knob, a stirring propeller, a motor, a cylinder switch, a filtration screen, a welding nozzle, a filter membrane and a vacuum pump. Using this unit for microplastic collection has the advantages of easy operation, economical and environment-friendly, high separation efficiency, and high durability.