Reduced mobility of fomesafen through enhanced adsorption in biochar-amended soil
Reduced mobility of fomesafen through enhanced adsorption in biochar-amended soil
复制标题
通过增强生物炭改良土壤中的吸附来降低氟磺胺草醚的流动性。
DOI：
10.1002/etc.2946
复制
发表时间：
2015-06-01
影响因子：
4.1
通讯作者：
Yu, Yunlong
中科院分区：
文献类型：
--
作者：
Khorram, Mahdi Safaei;Wang, Yun;Yu, Yunlong
碳分离过程中生物质热化学转化产生的残留土壤物质，称为生物炭，由于其众多的环境效益，包括用于污染土地管理，已被作为土壤改良剂引入。研究了氟磺胺草醚在添加3种不同比例（0.5%，1%，2%w/w）的稻壳船体生物炭的土壤中的吸附和淋溶行为，并采用静态平衡吸附-解吸和柱试验研究了其在土壤中的淋溶行为。吸附-脱附数据很好地符合Freundlich方程。当生物炭添加量从0%增加到2%（w/w）时，土壤对氟磺胺草醚的吸附系数从0.59增加到0.99、8.02和22.23。此外，生物炭对氟磺胺草醚的吸附量与生物炭的改性率之间存在较强的相关性（r>0.992，p
The residual soil material resulting from biomass thermochemical transformation during carbon separation, known as biochar, has been introduced as a soil amendment because of its numerous environmental benefits, including uses for contaminated land management. Adsorption and leaching of fomesafen in soils amended with 3 different rates of rice hull biochar (0.5%, 1%, and 2% w/w) under laboratory conditions were investigated, and studies were performed following a batch equilibration adsorption-desorption procedure and a column experiment for leaching. Adsorption-desorption data fit with the Freundlich equation well. The adsorption coefficient of fomesafen sharply increased from 0.59 to 0.99 to 8.02 to 22.23 when the amount of biochar amendment in the soil increased from 0% to 2% (w/w). In addition, a strong correlation was found between the amount of adsorbed fomesafen and the rate of amended biochar (r>0.992, p