文献类型：期刊文献

英文题名：Role of Alumina and Montmorillonite in Changing the Sorption of Herbicides to Biochars

作者：Li, Jianfa[1];Li, Saijun[1];Dong, Huaping[1];Yang, Shengshuang[1];Li, Yimin[1];Zhong, Jiaxing[1]

机构：[1]Shaoxing Univ, Dept Chem, Shaoxing 312000, Zhejiang, Peoples R China

年份：2015

卷号：63

期号：24

起止页码：5740

外文期刊名：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:000357062700004)、、EI(收录号：20152600985264)、Scopus(收录号：2-s2.0-84933055733)、WOS

基金：Funding was provided by the National Natural Science Foundation of China (41271475).

语种：英文

外文关键词：biochar; soil mineral; pesticide; sorption; porosity

外文摘要：The influence of biochars on the fate of herbicides in soil depends mostly on environmental factors among which the role of soil minerals is not clear. Two wood-derived biochars produced at 400 degrees C (BC400) and 600 degrees C (BC600) were treated with alumina and montmorillonite to investigate their interaction with biochars and the influence of herbicide Sorption. Both minerals exhibited a pore expanding effect that was likely relative to the removal of authigenic organic matter away from the biochars surface. Alumina brought more remarkable pore expansion by doubling the surface area of the BC400 biochair and the mesopore area of the BC600 biochar. Consequently, more adsorption sites were accessible for herbicide molecules, which resulted in higher sorption of herbicides (acetochlor and metribuzin) to the mineral-treated biochars than to the untreated biochars. The results are useful for understanding the change of surface and sorption properties of biochars with soil applications.