| 生物炭的制备及其镁改性对污染物的吸附行为研究 |
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| 引用本文： | 杨雪,张士秋,侯其东,王雁南,鞠美庭,刘乐.生物炭的制备及其镁改性对污染物的吸附行为研究[J].环境科学学报,2018,38(10):4032-4043. |
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| 作者姓名： | 杨雪 张士秋 侯其东 王雁南 鞠美庭 刘乐 |
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| 作者单位： | 南开大学环境科学与工程学院;南开大学天津市生物质固废资源化技术工程中心 |
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| 基金项目： | 国家自然科学基金（No.51708301）；2017年天津市一二三产业融合发展科技示范工程项目（No.17ZXYENC00100）；四川省教育厅科研基金（No.17ZA0399）；天津市自然科学基金重点基金项目（No.17JCZDJC39500）；津南区科技计划项目（No.20171505） |
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| 摘 要： | 以小麦和玉米秸秆为原料,于不同温度下制备了生物炭样品,并采用氯化镁(MgCl_2)、乙酸镁(Mg(CH_3COO)_2)和硝酸镁(Mg(NO_3)_2)对秸秆及其生物炭进行改性.通过分析各生物炭产率、pH、元素分析、比表面积、CEC、XRD及FT-IR,探究了生物炭理化性质的变化规律.各样品对氨氮、Pb(Ⅱ)及乙草胺的吸附试验结果表明:小麦秸秆经Mg(CH_3COO)_2改性后得到的生物炭的饱和吸附量最大;对3种吸附质的吸附过程均符合准二级吸附动力学方程;低浓度下吸附过程均可自发进行,对氨氮的吸附符合Langmuir模型且以离子交换作用为主,对Pb(Ⅱ)的吸附符合Freundlich模型且以离子交换作用为主,对乙草胺的吸附符合Langmuir模型且以分配、氢键和π-π电子受体供体作用为主.
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| 关 键 词： | 生物炭 理化性质 镁改性 吸附 污染物 |
| 收稿时间： | 2018/4/5 0:00:00 |
| 修稿时间： | 2018/6/11 0:00:00 |
The preparation of biochar and adsorption behavior of Mg-modified biochar to pollutants |
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| YANG Xue,ZHANG Shiqiu,HOU Qidong,WANG Yannan,JU Meiting and LIU Le.The preparation of biochar and adsorption behavior of Mg-modified biochar to pollutants[J].Acta Scientiae Circumstantiae,2018,38(10):4032-4043. |
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| Authors: | YANG Xue ZHANG Shiqiu HOU Qidong WANG Yannan JU Meiting and LIU Le |
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| Institution: | 1. College of Environmental Science and Engineering, Nankai University, Jinnan District, Tianjin 300071;2. Tianjin Engineering Research Center of Biomass Solid Waste Resources Technology, Nankai University, Jinnan District, Tianjin 300071,1. College of Environmental Science and Engineering, Nankai University, Jinnan District, Tianjin 300071;2. Tianjin Engineering Research Center of Biomass Solid Waste Resources Technology, Nankai University, Jinnan District, Tianjin 300071,1. College of Environmental Science and Engineering, Nankai University, Jinnan District, Tianjin 300071;2. Tianjin Engineering Research Center of Biomass Solid Waste Resources Technology, Nankai University, Jinnan District, Tianjin 300071,1. College of Environmental Science and Engineering, Nankai University, Jinnan District, Tianjin 300071;2. Tianjin Engineering Research Center of Biomass Solid Waste Resources Technology, Nankai University, Jinnan District, Tianjin 300071,1. College of Environmental Science and Engineering, Nankai University, Jinnan District, Tianjin 300071;2. Tianjin Engineering Research Center of Biomass Solid Waste Resources Technology, Nankai University, Jinnan District, Tianjin 300071 and 1. College of Environmental Science and Engineering, Nankai University, Jinnan District, Tianjin 300071;2. Tianjin Engineering Research Center of Biomass Solid Waste Resources Technology, Nankai University, Jinnan District, Tianjin 300071 |
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| Abstract: | |
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| Keywords: | biochar physicochemical properties magnesium modification adsorption pollutants |
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