文献类型：期刊文献

英文题名：Influence of Al-oxide on pesticide sorption to woody biochars with different surface areas

作者：Shou, Jianxin[2];Dong, Huaping[1];Li, Jianfa[1];Zhong, Jiaxing[1];Li, Saijun[1];Lu, Jinhong[1];Li, Yimin[1]

机构：[1]Shaoxing Univ, Dept Chem, Huancheng West Rd, Shaoxing 312000, Zhejiang, Peoples R China;[2]Shaoxing Univ, Yuanpei Coll, Shaoxing 312000, Zhejiang, Peoples R China

年份：2016

卷号：23

期号：19

起止页码：19156

外文期刊名：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

收录：SCI-EXPANDED(收录号：WOS:000384555200018)、、Scopus(收录号：2-s2.0-84976402827)、WOS

基金：Fundings were provided by the National Natural Science Foundation of China (41271475) and the Natural Science Foundation of Zhejiang Province, China (LY16B070004).

语种：英文

外文关键词：Soil oxide; Biochar; Herbicide; Adsorption; Porosity; Desorption hysteresis

外文摘要：Biochars' properties will change after application in soil due to the interactions with soil constituents, which would then impact the performance of biochars as soil amendment. For a better understanding on these interactions, two woody biochars of different surface areas (SA) were physically treated with aluminum oxide (Al-oxide) to investigate its potential influence on biochars' sorption property. Both the micropore area and mesopore (17 similar to 500 in diameter) area of the low-SA biochar were enhanced by at least 1.5 times after treatment with Al-oxide, whereas the same treatment did not change the surface characteristics of the high-SA biochar due partly to its well-developed porosity. The enhanced sorption of the pesticide isoproturon to the Al-oxide-treated low-SA biochar was observed and is positively related to the increased mesopore area. The desorption hysteresis of pesticide from the low-SA biochar was strengthened because of more pesticide molecules entrapped in the expanded pores by Al-oxide. However, no obvious change of pesticide sorption to the high-SA biochar after Al-oxide treatment was observed, corresponding to its unchanged porosity. The results suggest that the influence of Al-oxide on the biochars' sorption property is dependent on their porosity. This study will provide valuable information on the use of biochars for reducing the bioavailability of pesticides.