Immobilization of Lead and Cadmium in Soil Using Biochars Derived from Pig Manure and Suaeda glauca

被引：0
作者：
Yarui Liu
Fei Wang
Zheyun Yin
Weili Jia
Hongyang Xiao
Qimei Lin
Yujie Feng
机构：
[1] Tianjin University,College of Environmental Science and Engineering
[2] China Agricultural University,College of Resources and Environmental Sciences
[3] Nankai University,MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering
[4] Hebei University of Technology,School of Energy & Environmental Engineering
来源：
Bulletin of Environmental Contamination and Toxicology | 2020年 / 105卷
关键词：
Biochar; Heavy metal; Immobilization; Pig manure;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Biochar was for the first time produced from Suaeda glauca. The immobilization of Pb and Cd by this biochar and pig manure biochar was examined in two types of soils by diethylene triamine pentaacetic acid (DTPA) extraction. Addition of biochars decreased DTPA extractable Pb and Cd in Fluvo-aquic soil with reduction rates being 11.3%–48.4% and 0.74%–64.9% compared with the control treatment. The pig manure biochar favored the immobilization of Pb and S. glauca biochar favored the immobilization of Cd. Biochars can effectively immobilize heavy metals in Fluvo-aquic soil. However, the addition of biochars increased extractable Pb and Cd in red soil, with pig manure biochars showing greater rates. This is ascribed to that the competition effects of ions released from biochar enhanced the moving of heavy metals from iron and manganese oxides bound form to organic matter bound form, and hence enhanced the mobility and bioavailability of heavy metals.
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页码：146 / 154
页数：8
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