期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2019
卷号：10
期号：3
页码：1-5
出版社：University of Mohammed Premier Oujda
摘要：High heavy metal contents in soil of abandoned coal mining pose a risk to the
environment. Acidic conditions impose a potential mobilization and availability
of toxic heavy metals to water body. The objective of this study was to reduce
mobilization of manganese and cadmium in the soil by amending lignite base
biochar. The immobilization was investigated in a fixed bed column experiment
in which concentrations of the metals in aliquot after the column were
compared. Demineralized water adjusted to pH 4.7 to mimic environmental
condition was pumped up through the column and the aliquots were collected at
empty head space at liquid to solid (L/S) ratios of 1, 2, 5, 8 and 10. The results
show that biochar amendment improves fraction of Mn and Cd immobilization
in the soil and reduces mobility and availability of the metals. Amendment of
10% biochar could immobilize Mn (30%)and Cd (1%), respectively.
关键词：Immobilization; Abandoned coal mine; Biochar amendment; Heavy metals; Soil;
