Production and recovery of volatile fatty acids from fermentation broth

被引:26
作者
Mostafa, NA [1 ]
机构
[1] Minia Univ, Dept Chem Engn, El Minia, Egypt
关键词
volatile fatty acids; whey; akalona; extraction; anaerobic fermentation;
D O I
10.1016/S0196-8904(99)00043-6
中图分类号
O414.1 [热力学];
学科分类号
摘要
The production of volatile fatty acids (VFAs) by anaerobic fermentation of wheat milling waste residues (akalona) either as a solid or hydrolyzate and whey was studied using fresh rumen fluid as a mixed culture for anaerobic digestion of the organic residues. Maximum VFAs production was obtained from akalona followed by whey after 8 days. The lower VFAs production was obtained from akalona hydrolyzate after 7 days. VFAs recovery from fermentation broth by liquid-liquid extraction using a mixed solvent (tri-n-octylphosphine oxide in kerosene) followed by a pure solvent was studied. Experiments were run covering the extraction kinetics of tri-n-octylphosphine in the diluent kerosene under the optimum conditions for extraction of VFAs with mixed solvent and with pure solvent only, and the per cent recovery of VFAs was calculated in both steps. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1543 / 1553
页数:11
相关论文
共 7 条
[1]  
Bulock J., 1989, BASIC BIOTECHNOLOGY, P372
[2]  
KUSEL K, 1994, APPL ENVIRON MICROB, V60, P1370
[3]   BIOCONVERSION OF CELLULOSE TO ACETATE WITH PURE CULTURES OF RUMINOCOCCUS-ALBUS AND A HYDROGEN-USING ACETOGEN [J].
MILLER, TL ;
WOLIN, MJ .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1995, 61 (11) :3832-3835
[4]   ACETIC-ACID PRODUCTION BY AN ELECTRODIALYSIS FERMENTATION METHOD WITH A COMPUTERIZED CONTROL-SYSTEM [J].
NOMURA, Y ;
IWAHARA, M ;
HONGO, M .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1988, 54 (01) :137-142
[5]   MODELING OF A PLUG-FLOW PILOT REACTOR PRODUCING VFA BY ANAEROBIC FERMENTATION OF MUNICIPAL SOLID-WASTES [J].
SANS, C ;
MATAALVAREZ, J ;
CECCHI, F ;
PAVAN, P .
WATER SCIENCE AND TECHNOLOGY, 1994, 30 (12) :125-132
[6]   MEMBRANE-BASED EXTRACTIVE FERMENTATION TO PRODUCE PROPIONIC AND ACETIC-ACIDS - TOXICITY AND MASS-TRANSFER CONSIDERATIONS [J].
SOLICHIEN, MS ;
OBRIEN, D ;
HAMMOND, EG ;
GLATZ, CE .
ENZYME AND MICROBIAL TECHNOLOGY, 1995, 17 (01) :23-31
[7]  
WARNER A C, 1964, Nutr Abstr Rev, V34, P339