吉林大学学报(地球科学版) ›› 2016, Vol. 46 ›› Issue (4): 1199-1207.doi: 10.13278/j.cnki.jjuese.201604206
刘娜, 杨亚冬, Alberto Bento Charrua, 王航, 叶康, 吕春欣
Liu Na, Yang Yadong, Alberto Bento Charrua, Wang Hang, Ye Kang, Lü Chunxin
摘要：
将农业废弃物大豆秆在450 ℃缺氧条件下热裂解制备生物质炭。采用元素分析仪、扫描电镜（SEM）、傅里叶变换红外光谱（FTIR）、光电子能谱分析（XPS）等手段对生物质炭进行理化性质分析；应用响应曲面法（RSM）下的中心合成设计（CCD）功能研究4个因素（初始pH、吸附剂质量浓度、阿特拉津质量浓度、温度）对阿特拉津去除率的影响；建立二阶模型，并通过方差分析验证二阶方程的有效性。结果表明:生物质炭表面充满孔状结构，且富含C=C、C-C、CHx、-C-OR、-COOR等官能团；吸附阿特拉津后生物质炭在羟基（-OH）的位置产生了新的吸收峰，推测羟基官能团在吸附过程中发挥了重要作用。RSM法优化最佳吸附去除阿特拉津条件为:初始阿特拉津质量浓度为5 mg/L、pH=6.67，吸附剂质量浓度为7.75 g/L、温度为32 ℃；在该条件下阿特拉津的吸附去除率达到92.18%。该研究可为评价施加生物质炭土壤中阿特拉津的迁移规律及阿特拉津污染水体修复提供参考。
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