Extraction and purification of lactic acid from silages

被引：39

作者：

Danner, H ^{[1
]}

Madzingaidzo, L ^{[1
]}

Holzer, M ^{[1
]}

Mayrhuber, L ^{[1
]}

Braun, R ^{[1
]}

机构：

[1] IFA Tulln, Dept Environm Biotechnol, A-3430 Tulln, Austria

来源：

BIORESOURCE TECHNOLOGY | 2000年 / 75卷 / 03期

关键词：

silage; lactic acid; extraction; electrodialysis; yield;

D O I：

10.1016/S0960-8524(00)00068-7

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Various silages with different contents of organic acids were used to evaluate the possibilities of recovery of lactic acid from grass silages. Press extraction yields of lactic acid from silage preparations ranged from 31 to 96 g lactate per kg silage dry matter (g LA/kg DM). The crude liquid press extract was pre-treated with ultrafiltration membranes followed by purification with mono-polar electrodialysis (ED). Low current densities, high energy consumption at 1.47-1.76 kWh/kg lactate and the high levels of organics and minerals (8 g/l) limit the possible applications of the resulting product to low-grade applications such as animal feed additive or road-de-icers. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：181 / 187

页数：7