Paper mill sludge-soil mixture: kinetic and thermodynamic tests of cadmium and lead sorption capability

被引：41

作者：

Battaglia, A ^{[1
]}

Calace, N ^{[1
]}

Nardi, E ^{[1
]}

Petronio, BM ^{[1
]}

Pietroletti, M ^{[1
]}

机构：

[1] Univ Roma La Sapienza, Dept Chem, I-00185 Rome, Italy

来源：

MICROCHEMICAL JOURNAL | 2003年 / 75卷 / 02期

关键词：

paper mill sludge; soil sorption; lead; cadmium;

D O I：

10.1016/S0026-265X(03)00074-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Paper mill sludge (characterized by 29.0% of organic substances such as cellulose, lignin and tannins and 71.0% of inorganic substances such as kaolinite and carbonates) was studied in a mixture with soil in order to evaluate its effects on soil capability for retaining heavy metals. Attention was focused on cadmium and lead sorption and two parameters were investigated, the contact time of paper mill sludge-soil mixture and the paper mill sludge-soil ratio in the mixture. Results showed that paper mill sludge and soil interact to form 'new' sorbing sites. Taking into account sorption results of lead, the retention of which by soil is substantially increased by sludge addition, can highlight this modification. Also, the amount of sorbed cadmium was increased by sludge addition. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：97 / 102

页数：6

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