Ex situ diesel contaminated soil washing with mechanical methods

被引：66

作者：

Feng, D ^{[1
]}

Lorenzen, L ^{[1
]}

Aldrich, C ^{[1
]}

Maré, PW ^{[1
]}

机构：

[1] Univ Stellenbosch, Inst Mineral Proc & Intelligent Proc Syst, Dept Chem Engn, ZA-7602 Stellenbosch, South Africa

来源：

MINERALS ENGINEERING | 2001年 / 14卷 / 09期

关键词：

oil sands; leaching; environmental; particle size; surface modification;

D O I：

10.1016/S0892-6875(01)00114-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Soil washing is a dynamic, physical process that cleans contaminated soil through transfer of the contaminant into a liquid stream. Three mechanical washing methods, i.e. jet reactor, attrition and ultrasonic washing were evaluated on a laboratory scale. The operating parameters for each washing process were investigated in detail and mechanisms are proposed for the observed effects. In a techno-economic comparison of the three methods, the jet reactor performed best, followed by ultrasonic and attrition washing. Experimental results suggested that a combination of the three washing techniques could yield residual diesel levels of less than 1000 mg/l for sand particles with an approximate size of 0.1 mm and an initial diesel content of 5%. (C) 2001 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1093 / 1100

页数：8