| 摘要 |
biotechnology. SUBSTANCE: in a citric acid production process, fermented solution is purified by bentonite suspension, after which solution is treated with coal-fiber sorbent taken in amounts 2.0 to 12.0 per 1 cu.dm solution. Sorption pore volume limit is 0.30 to 0.80 cu,cm/g. EFFECT: weakened coloration and decreased impurity level in purified solution. 2 cl, 1 tbl, 9 ex |
