岩土工程学报Issue(8)：1497-1502,6.DOI:10.11779/CJGE201508020
Mn（II）、Cr（III）在黄土上共存吸附特性研究
Adsorption behavior of co-existing Mn(II) and Cr(III) in loess soil
摘要
Abstract
Heavy metal is one of the most important pollutants in soil, and heavy metal-combined pollution is the most common form. Behavior of Mn(II) and Cr(III) adsorption in loess soil is studied through a series of experiments in laboratory. Adsorption of Mn(II) is found to be inhibited in Mn(II)-Cr(III)-combined system and the adsorption capacity decreases by 14.6%~46.5%, while adsorption of Cr(III) is basically not influenced. Mn(II) adsorption agrees well with that of the Langmuir model but not with that of the Freundlich and D-R models, while Cr(III) adsorption still agrees well with that of the Freundlich and D-R models. At pH around 5~7, removal of Mn(II) becomes more efficient, and that of Cr(III) becomes less efficient. Under alkaline condition, Cr(III) is almost completely removed, but Mn(II) removal is inhibited greatly. The physical property of heavy metal (i.e., hydrolysis constant) and minerals in loess soil both are found to play important roles in adsorption of Mn(II) and Cr(III).关键词
锰/铬/复合污染/吸附/黄土Key words
manganese/chromium/combined pollution/adsorption/loess soil分类
建筑与水利引用本文复制引用
王艳,唐晓武,刘干斌..Mn（II）、Cr（III）在黄土上共存吸附特性研究[J].岩土工程学报,2015,(8):1497-1502,6.基金项目
国家自然科学基金项目（51308310）；浙江省自然科学基金项目（LQ13E080007）；宁波市自然科学基金项目（2014A610105）；宁波大学校科研基金项目 （）
