酸改性活性炭对含锑矿坑废水的吸附研究
Method of Removing Sb2+ from Mine Water by Acid Modified Activated Carbon Adsorption
作者: 黄国忠 , 周建情 :北京科技大学土木与环境工程学院,北京;
关键词: 矿井废水; 改性活性炭; 等温吸附曲线; 动力模型; Mine Wastewater; Modified Activated Carbon; Isothermal Adsorption Curve; Dynamic Model
摘要:Abstract: To meet “The Environmental Quality Standard for Surface Water” III kind of water standard re-quirement, according to the characteristic of low concentration Sb2+ is difficult to remove, we mainly adopt acid modified activated carbon two-stage adsorption process to deal with Sb2+. Adsorbent optimization experiment, single factor and orthogonal test determine that acid modified activated carbon works well for Sb2+ remove, with the optimal processing parameters as pH is 5, adsorption time is 2.0 h, coagulant dosage is 5 g/L. BET, SEM analysis showed the specific surface area increased, reducing impurity, channel unblocked. In addition, Boehm concluded that acidic surface functional groups increased obviously. Finally, the fit of the adsorption isotherm for modified activated carbon and Sb2+ follows Langmuir adsorption isotherm which belongs to monolayer coverage. It obeys a pseudo-second order kinetic model and the correlation coefficient is 0.994.
文章引用: 黄国忠 , 周建情 (2014) 酸改性活性炭对含锑矿坑废水的吸附研究。 环境保护前沿, 4, 245-254. doi: 10.12677/AEP.2014.46033
参考文献
[1] 雷兆武, 孙颖, 杨高英 (2006) 有色金属矿山废水管理与资源化研究. 矿业安全与环保, 33, 40-43.
[2] 客绍英, 石洪凌, 刘冬莲 (2005) 锑的污染及其毒性效应和生物有效性. 化学世界, 46, 382-383.
[3] 宋书巧, 吴浩东, 蓝唯源 (2008) 土壤锑污染对桑树的影响初探. 资源开发与市场, 24, 1-4.
[4] 张帆, 李菁, 谭建华 (2013) 吸附法处理重金属废水的研究进展. 化工进展, 32, 2749-2752.
[5] 杨金辉, 王劲松, 周书葵 (2010) 活性炭改性方法的研究进展. 湖南科技学院学报, 31, 90-93.
[6] 张小康, 蒋豫, 赵军 (2012) 活性炭的表面改性技术及其应用研究进展. 污染防治技术, 25, 1-4.
[7] Moreno, C.C., Carrasco, M.F., Maldonado, H.F., et al. (1998) Effects of non-oxidant and oxidant acid treatments on the surface properties of an activated carbon with very low ash content. Carbon, 32, 145-151.
[8] Boehm, H.P. (1994) Some aspects of the surface chemistry of carbon black and other car-bons. Carbon, 32, 759-761.
[9] 凯勋, 高怡 (2012) 性炭吸附剂的制备及除砷(m)性能研究. 工业水处理, 32, 28-31.
[10] 房平, 邵瑞华, 任娟 (2012) 活性炭对苯酚的吸附研究. 炭素技术, 30, 12-16.