alexa Evaluation of ultra- and nanofiltration for refining soluble products from rice husk xylan.
Biochemistry

Biochemistry

Journal of Membrane Science & Technology

Author(s): Vegas R, Moure A, Domnguez H, Paraj JC, Alvarez JR,

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Abstract Liquors from water treatments of rice husks (containing soluble xylan-derived products) were processed with NF and UF membranes for concentrating and removing both monosaccharides and non-saccharide compounds. Among the commercial membranes assayed, the best results were achieved with the 4 kDa polymeric tubular ESP04 (PCI Membranes), and the 1 kDa ceramic monolithic Kerasep Nano (Novasep). Several trade-offs were identified both in membrane selection and in operating conditions. The ESP04 polymeric membrane provided the best fractionation, but lower recovery under comparable experimental conditions, while its fluxes were about half of those of the ceramic Kerasep Nano membrane. Increase in transmembrane pressure resulted in improved product recovery, at the expense of a lower purity. Additional data on product refining by coupling membrane processing with extraction and ion exchange are provided. This article was published in Bioresour Technol and referenced in Journal of Membrane Science & Technology

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