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Möglichkeiten des Einsatzes der Ultrafiltration und der reversiblen Osmose zur Gewinnung und Aufarbeitung löslicher Inhaltsstoffe aus Prozeßwässern der Stärkeindustrie
Author(s) -
Meuser F.,
Smolnik H.D.
Publication year - 1976
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19760280806
Subject(s) - chemistry , ultrafiltration (renal) , filtration (mathematics) , chromatography , reverse osmosis , membrane technology , membrane , chemical oxygen demand , permeation , environmental engineering , wastewater , environmental science , biochemistry , statistics , mathematics
Possibilities for the Use of Ultra Filtration and Reverse Osmosis for Extraction and Processing of Soluble Constituents from Process Water in Starch Industries . The theoretical principles of ultra filtration and reversible osmosis are explained and the units which are in practical use are described (flat membrane units, hollow fibre units, and tubular membrane units). A comparison shows that tubular membrane units can be used successfully for the processing of process water in starch factories in view of reduction of water pollution and recovery of dissolved solids. Separation of organic substances from wheat flour extract and potato fruit water is done in similar way. COD (chemical oxygen demand) of the permeate is directly proportional to the COD of the concentrate. It is pointed out that application of membrane filtration for isothermal, selective and continuous separation of dissolved solids is restricted by the short life and low flux rate of the membranes.