| Title: | Solid-liquid extraction of alkali metals and organic compounds by leaching of food industry residues |
| Author(s): | Yu C; Zheng Y; Cheng YS; Jenkins BM; Zhang R; VanderGheynst JS; |
| Address: | "Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, USA" |
| DOI: | 10.1016/j.biortech.2010.01.074 |
| ISSN/ISBN: | 1873-2976 (Electronic) 0960-8524 (Linking) |
| Abstract: | "Leaching was studied for its application in extracting inorganic and organic constituents from fresh fermented grape pomace, air-dried fermented grape pomace and air-dried sugar beet pulp. Samples of each feedstock were leached in water at ambient temperature for 30 or 120 min at dry solid-to-liquid ratios of 1/20 and 1/50 kg/L. Leaching removed 82% of sodium, 86% of potassium, and 76% of chlorine from sugar beet pulp, and reduced total ash concentration in air-dry fermented grape pomace from 8.2% to 2.9% of dry matter, 8.2% to 4.4% in fresh fermented grape pomace, and 12.5% to 5.4% in sugar beet pulp. Glycerol (7-11 mg/dry g), ethanol (131-158 mg/dry g), and acetic acid (24-31 mg/dry g) were also extracted from fermented grape pomace. These results indicate that leaching is a beneficial pretreatment step for improving the quality of food processing residues for thermochemical and biochemical conversion" |
| Keywords: | "Beta vulgaris/chemistry Biomass Fermentation *Food Industry Industrial Waste/analysis Inorganic Chemicals/analysis Metals, Alkali/*isolation & purification Organic Chemicals/*isolation & purification Refuse Disposal/*methods Vitis/chemistry Volatilization;" |
| Notes: | "MedlineYu, Chaowei Zheng, Yi Cheng, Yu-Shen Jenkins, Bryan M Zhang, Ruihong VanderGheynst, Jean S eng Research Support, Non-U.S. Gov't England 2010/02/16 Bioresour Technol. 2010 Jun; 101(12):4331-6. doi: 10.1016/j.biortech.2010.01.074. Epub 2010 Feb 12" |
