Simple and sequntial extractions of heavy metals from different sewage sludges

被引：189

作者：

Fuentes, A ^{[1
]}

Lloréns, M ^{[1
]}

Sáez, J ^{[1
]}

Soler, A ^{[1
]}

Aguilar, MI ^{[1
]}

Ortuño, JF ^{[1
]}

Meseguer, VF ^{[1
]}

机构：

[1] Univ Murcia, Dept Chem Engn, E-30071 Murcia, Spain

来源：

CHEMOSPHERE | 2004年 / 54卷 / 08期

关键词：

sewage sludge; heavy metals; sequential extraction; DTPA-extractable metals;

D O I：

10.1016/j.chemosphere.2003.10.029

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The presence of heavy metals in the sludges produced in waste-water treatment plants restricts their use for agricultural purposes. This study looks at different types of sludges (aerobic, anaerobic, unstabilised and sludge from a waste stabilisation pond) and compares the distribution of the heavy metals they contain according to the treatment that they have undergone. Some agronomic parameters necessary for characterising a sludge as suitable for use as amendment were determined. The aim of this study is to compare the availability and the localisation of heavy metals in different sewage sludges using simple (water and DTPA) extraction and the BCR (Community Bureau of Reference) sequential extraction procedure. It was confirmed that the total concentration of heavy metals did not exceed the limits set out by European legislation and that the stabilisation treatment undergone by the sludges strongly influenced the heavy metal distribution and the phases to which they were associated and their bioavailability level. The DTPA extraction procedure is cheap and easy to perform and the obtained results are similar to those obtained with the sequential procedure. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：1039 / 1047

页数：9

共 38 条

[1] Heavy metal extractable forms in sludge from wastewater treatment plants [J].