有机溶剂对污泥厌氧发酵产酸的影响

Effect of Organic Solvent on Production of Organic Acids from Municipal Sludge

有机酸是重要的化工原料,从市政污泥厌氧发酵过程提取有机酸、用于生产高附加值的产品可以实现废物资源化。本研究在确定最佳有机溶剂和萃取剂的基础上,考察了有机溶剂对城市污泥厌氧发酵生产有机酸的影响。结果表明,较合适的溶剂和萃取剂分别为磺化煤油和三烷基氧膦。少量磺化煤油对城市污泥发酵产生产有机酸有一定促进作用。

Organic acids are important chemicals. Municipal sludge can be reused by anaerobic fermentation, from which organic acids could be obtained with liquid-liquid extraction and useful substances be produced. Based on the determination of optimum organic solvent and extractant, it effect on production of volatile fatty acid （VFA） from municipal sludge was investigated in this research. The results showed that the proper organic solvent and extractant were sulfonated kerosene and trialkyl phosphine oxide. And, the VFA production was improved by a slight amount of sulfonated kerosene.