The present disclosure relates to a method that includes utilizing a microorganism for the converting of a substrate to an acid contained in a mixture that includes the acid and water, maintaining a pH of the mixture to less than 5, and treating the mixture with a first stream comprising an organic.

Provided is an extraction system which can be used to recover light oils and other organic materials during a supercritical or subcritical fluid extraction. The extraction system may include a dual purpose pressure vessel which can be used as an independent, full spectrum extractor by adding organic material within a compartment within the vessel and passing liquefied, compressed gases onto and through organic material as well as a separator to separate the extracting fluid from the extracted material. Filter membranes having different size pore openings designed to capture and retain various compounds based on their molecular size may be used in conjunction with the pressure vessel. The filter membranes are part of a filtration system which may be incorporated as an internal component of the pressure vessel or may be utilized at different locations within the extraction system.

A process for extracting a phosgene compound, comprising providing a membrane extracting unit comprising at least one extracting cell that comprises at least one membrane contactor module having at least two sides, a gas side and a liquid side; letting an initial gas stream comprising a phosgene compound flow on the gas side of the membrane contactor module; and letting an extractant liquid stream, suitable for dissolving a phosgene compound, flow on the liquid side of the membrane contactor module so that the extractant liquid stream absorbs the phosgene compound from the initial gas stream and provides a second extractant liquid stream enriched with the phosgene compound.

The purpose of the present invention is to provide a method for evaluating the clogging of a filtration membrane with a protein-containing solution, including the steps of: a) passing a protein-containing solution through a filtration membrane, b) after the step a), obtaining a filtration membrane cross-section from the filtration membrane, c) treating the protein-containing solution before the step a), the filtration membrane before the step b), or the filtration membrane cross-section after the step b) with at least one stain specific to a protein aggregate, and d) confirming the presence of the protein aggregate in the filtration membrane cross-section.

A continuous process for the production of sodium bicarbonate crystals from the carbon dioxide of a gas stream including an absorption step of the carbon dioxide from a gas stream into an aqueous solution including a sodium carbonate salt to produce an aqueous solution of sodium bicarbonate, then a crystallization step of the sodium bicarbonate salt obtained at the first step. A system for the production of sodium bicarbonate crystals from carbon dioxide of a gas stream including a control unit, an absorption unit and a crystallization unit.