Anaerobic removal of linear alcohol ethoxylates

被引：13
|
作者：
Mezzanotte, V
Bolzacchini, E
Orlandi, M
Rozzi, A
Rullo, S
机构：
[1] Univ Studi Milano Bicocca, DISAT, I-20126 Milan, Italy
[2] Politecn Milan, DIIAR, I-20133 Milan, Italy
[3] CNR, IRSA, Brugherio, Milano, Italy
来源：
BIORESOURCE TECHNOLOGY | 2002年 / 82卷 / 02期
关键词：
wastewater treatment; non-ionic surfactants; linear alcohol ethoxylates; anaerobic digestion; biodegradation; adsorption;
D O I：
10.1016/S0960-8524(01)00170-5
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The present paper deals with a laboratory-scale study of anaerobic treatment of two commercial mixtures (LS2, LT7) of alcohol ethoxylates with 8-14 carbon atoms and 2 and 7 ethoxy groups. Tests were carried out in batch, with a 2 g 1(-1) single dose, and in semibatch, with daily 0.2 g 1(-1) doses. The behaviour of the tested mixtures was different: anaerobic sludge adsorption was the main removal process for LS2, while adsorption was less significant and biodegradation was more important for LT7. These differences appeared to be mainly related to the ethoxy portion length determining the extent of biodegradability and adsorption. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：151 / 156
页数：6
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