Separation of oil from oily sludge by freezing and thawing

被引：79

作者：

Jean, DS ^{[1
]}

Lee, DJ ^{[1
]}

Wu, JCS ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan

来源：

WATER RESEARCH | 1999年 / 33卷 / 07期

关键词：

oily sludge; freezing; separation;

D O I：

10.1016/S0043-1354(99)00005-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This communication reports for the first time the feasibility of employing freeze/thaw method to separate oil from an oily sludge. The freeze/thawed sludge comprises three distinct layers, an oil layer at the top, a sediment layer at the bottom and a water layer locating in between, whose compositions were identified with the help of GC-MS. Freezing and thawing can separate over 50% of its oil content. However, ultra-fast freezing is not beneficial for oil separation. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1756 / 1759

页数：4

共 7 条

[1] Unidirectional freezing of waste-activated sludge: The presence of sodium chloride [J].