Systems and methods for extracting useful by-products and natural rubber from non-Hevea rubber bearing plants are disclosed.

A liquid-liquid extraction system (1) adapted for the flow of two or more liquids therein is disclosed. The system comprises a mixer settler sub-system (100) and a counter-current liquid-liquid extraction column (200). The sub-system (100) comprises one or more mixer settlers (110) connected in series, and the column (200) comprises either a mixing section (260) comprising an agitation means (261) and/or a static section (280) comprising an internal (281). The first outlet (131) of the mixer settler sub-system (100) is in fluid communication with the first inlet (221) of the column (200) and the second inlet (112) of the mixer settler sub-system (100) is in fluid communication with the second inlet (222) of the counter-current liquid-liquid extraction column (200). The invention further relates to a counter-current liquid-liquid extraction process for using said system 1. The present invention further relates also to the use of the system (5) or process in removing aromatic compounds from organic streams, in treating an oil stream of a refinery, or in a liquid-liquid extraction process having at least two feed streams of different viscosity, similar density, or low interfacial tension.

Systems and methods for extracting an analyte from a sample. The system includes at least one reaction vessel for receiving the sample and a reaction solution that are combined into a reaction mixture. Insoluble components are separated from the reaction mixture and soluble components, including a dissolved analyte are dispensed from the at least one reaction vessel. The system further includes at least one purification vessel configured to receive the soluble components from the at least one reaction vessel, separate contaminants from the soluble components, and dispense a purified dissolved analyte.

A liquid-liquid extraction system includes extraction stages, a pumping system, and a controller. Each extraction stage has a chamber, a primary input, a raffinate output, and an extract output. An input liquid (e.g., either a source liquid or raffinate from a preceding extraction stage, mixed with an extraction liquid) is presented to the chamber via the primary input. The chamber enables phase separation of liquid therein, into a raffinate and a extract, where the raffinate exits the separation vessel at the raffinate output, and the extract exits the separation vessel at the extract output. A level sensor is coupled to the chamber and the controller is operatively programmed to read an output of the level sensor, compare the output of the level sensor to a target, and cause the associated chamber to receive additional liquid if the output is lower than the target.

Disclosed herein are methods for recovering diphosphonite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using multistage countercurrent liquid-liquid extraction. Recovery is enhanced with one or more method steps. In a first step, a portion of the heavy phase from the settling section of the first stage is recycled to the settling section of the first stage. In a second step, a portion of the light phase from the settling section of the first stage is recycled to the mixing section of the first stage. In a third step, the first stage takes place in a mixer-settler, a Lewis base is introduced into the settling section of the first stage, and a complex of Lewis acid and Lewis base is formed in this settling section. In a fourth step, a polyamine is added to the first stage.

A spent nuclear fuel is reprocessed by dissolving a spent nuclear fuel in an aqueous nitric acid solution and separating and recovering nuclides contained in the resulting fuel solution by solvent extraction. A spent nuclear fuel reprocessing method includes: an electrolytic valence adjustment step in which nuclides contained in the fuel solution is electrolytically reduced without removing fission products or minor actinides until valence of plutonium is at a level at which solvent extraction efficiency is low by using the valence of plutonium contained in the fuel solution as a parameter; and a nuclide separation step in which, by using an extraction solvent which extracts uranium contained in the fuel solution, uranium is distributed from the fuel solution subjected to the electrolytic valence adjustment step to the extraction solvent.

A spent nuclear fuel is reprocessed by dissolving a spent nuclear fuel in an aqueous nitric acid solution and separating and recovering nuclides contained in the resulting fuel solution by solvent extraction. A spent nuclear fuel reprocessing method includes: an electrolytic valence adjustment step in which nuclides contained in the fuel solution is electrolytically reduced without removing fission products or minor actinides until valence of plutonium is at a level at which solvent extraction efficiency is low by using the valence of plutonium contained in the fuel solution as a parameter; and a nuclide separation step in which, by using an extraction solvent which extracts uranium contained in the fuel solution, uranium is distributed from the fuel solution subjected to the electrolytic valence adjustment step to the extraction solvent.

A liquid-liquid extraction system includes extraction stages, a pumping system, and a controller. Each extraction stage has a chamber, a primary input, a raffinate output, and an extract output. An input liquid (e.g., either a source liquid or raffinate from a preceding extraction stage, mixed with an extraction liquid) is presented to the chamber via the primary input. The chamber enables phase separation of liquid therein, into a raffinate and a extract, where the raffinate exits the separation vessel at the raffinate output, and the extract exits the separation vessel at the extract output. A level sensor is coupled to the chamber and the controller is operatively programmed to read an output of the level sensor, compare the output of the level sensor to a target, and cause the associated chamber to receive additional liquid if the output is lower than the target.

A liquid-liquid-solid extraction process is disclosed for isolating natural products from a feedstock stream containing a biomass in an aqueous salt solution. The process includes forming a dispersion by contacting the feedstock stream with an extraction solvent in an extraction zone; passing the dispersion to a separation zone; separating the dispersion into multiple layers at a temperature of about 90 C. or less, the layers including: a solvent extract layer, a raffinate layer and a rag layer, and isolating at least part of the solvent extract layer, at least part of the raffinate layer and/or at least part of the rag layer.

The invention belongs to the technical field of phospholipid processing, in particular to a low-iron hydrous phospholipid and a method for separating low-iron hydrous phospholipids from soybean oil sediments. The main components of low-iron water-containing phospholipids are phospholipids, oil and water; its water content is 70-80 g/100 g; on a dry basis, the content of acetone-insoluble matter is 92.5-95.5 g/100 g; in terms of acetone-insoluble matter, the iron content is less than or equal to 18 mg/kg. The low-iron water-containing phospholipid of the present invention is prepared from soybean oil by a hydration method, and is used to solve the defects of low acetone-insoluble content of the water-containing phospholipid, inability to remove iron ions and the industry's long-term dependence on the solvent method to prepare the powdered phospholipid; At the same time, the method solves the technical problem that the preparation of powder phospholipid by hydration method cannot realize industrial production.