| 玉米秸秆生物炭对重金属镉、铅的吸附性能 |
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| 引用本文： | 邹继颖,孙大志,赵家伟,王书成,李健炜,李文悦,吕逸寒,窦赫扬.玉米秸秆生物炭对重金属镉、铅的吸附性能[J].北华大学学报(自然科学版),2018(4):536-539. |
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| 作者姓名： | 邹继颖 孙大志 赵家伟 王书成 李健炜 李文悦 吕逸寒 窦赫扬 |
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| 作者单位： | 吉林化工学院资源与环境工程学院,吉林 吉林,132022 |
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| 基金项目： | 国家科技重大专项(2014ZX07201-011)，吉林化工学院重大科学技术研究项目(2016029)，吉林市科技创新发展计划项目(201750257) |
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| 摘 要： | 利用玉米秸秆制备生物炭,进行吸附重金属Cd~(2+)和Pb~(2+)试验,分析生物炭吸附重金属的吸附量及吸附效率.试验结果表明:Cd~(2+)的最优吸附条件是pH为5,120 min吸附平衡.Pb~(2+)的最优吸附条件是pH为1,60 min吸附平衡;生物炭对养殖废水中Pb~(2+)和Cd~(2+)具有较好的吸附效果,吸附去除率分别为85%和98%,生物炭对Pb~(2+)的吸附效果明显优于Cd~(2+);Cd~(2+)和Pb~(2+)在秸秆生物炭表面上的吸附过程符合Freundlich等温吸附模型.
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| 关 键 词： | 玉米秸秆 生物炭 重金属 吸附 maize straw biochar heavy metal adsorption |
Adsorption of Heavy Metal Cd,Pb by Maize Straw Biochar |
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| Zou Jiying,Sun Danzhi,Zhao Jiawei,Wang Shucheng,Li Jianwei,Li Wenyue,Lv Yihan,Dou Heyang.Adsorption of Heavy Metal Cd,Pb by Maize Straw Biochar[J].Journal of Beihua University(Natural Science),2018(4):536-539. |
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| Authors: | Zou Jiying Sun Danzhi Zhao Jiawei Wang Shucheng Li Jianwei Li Wenyue Lv Yihan Dou Heyang |
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| Abstract: | Preparation of biochar using maize straw and adsorption of heavy metal Cd2+,Pb2+ as adsorbents,the adsorption capacity and adsorption efficiency of heavy metals adsorbed on biochar were analyzed and evaluated. The pH of Cd2+ optimal adsorption conditions was 5,adsorption equilibrium time was 120 min and pH of Pb2+ optimal adsorption conditions was 1,adsorption equilibrium time was 60 min. Biochar has an excellent effect on adsorption of Cd2+, Pb2+ in aquaculture wastewater. The degradation rate of adsorption was 85% , 98% respectively. The adsorption effect of Pb2+ is obviously better than that of Cd2+. The adsorption processes of Cd2+, Pb2+ on the surface of straw biochar is fit to the Freundlich adsorption model. |
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