Separation of oil from oily sludge by freezing and thawing

被引:74
|
作者
Jean, DS [1 ]
Lee, DJ [1 ]
Wu, JCS [1 ]
机构
[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan
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
收藏
页码:1756 / 1759
页数:4
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