Crossflow-Filtrationsverfahren zur Trennung organischer Verbindungen nach Adsorption an anorganischen Feststoffen

摘要

Process for separating water-soluble organic compounds from an aqueous solution comprises adsorbing a fraction of the compounds on a finely divided inorganic solid adsorbent and separating the loaded adsorbent by cross-flow filtration on a porous membrane. The process comprises (a) mixing the solution with adsorbent to form a suspension; (b) passing the suspension over the top of the membrane; (c) establishing a pressure differential between the top and bottom of the membrane so that a filtrate depleted in adsorbed compounds flows through the membrane; (d) separating unadsorbed compounds from the filtrate; and (e) recycling the suspension, optionally after removing all or part of the adsorbent, to remove any residual unadsorbed compounds.