| 硫化亚铁纳米粒子吸附地下水中的镉 |
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| 引用本文： | 李佳, 霍丽娟, 钱天伟. 硫化亚铁纳米粒子吸附地下水中的镉[J]. 环境工程学报, 2016, 10(3): 1264-1270. doi: 10.12030/j.cjee.20160342 |
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| 作者姓名： | 李佳 霍丽娟 钱天伟 |
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| 作者单位： | 1.太原科技大学环境与安全学院, 太原 030024 |
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| 基金项目： | 山西省科技重大专项(20131101028) 山西省回国留学人员科研资助项目(2013-重点2) 山西省高等学校科技创新项目资助(20120026) 山西省回国留学人员科研资助项目(2014-061) |
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| 摘 要： | 用羧甲基纤维素钠(CMC)作为稳定剂制备FeS纳米粒子,研究FeS纳米粒子对地下水中镉的吸附性能。讨论了反应时间、CMC添加量、腐殖酸对CMC-FeS纳米粒子吸附镉的影响。结果发现,FeS纳米粒子吸附镉的动力学过程符合准二级动力学,吸附等温线符合Freundlich模型。吸附量随CMC添加量的增加而增加,当CMC和FeS的摩尔比增加到0.0010时,吸附量最大,此后随着CMC添加量的增大,吸附量又降低。腐殖酸(HA)的加入有利于FeS纳米粒子对镉的吸附。
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| 关 键 词： | CMC FeS纳米粒子 吸附 动力学 |
| 收稿时间： | 2015-01-24 |
Sorption of cadmium in groundwater by FeS nanoparticles |
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| Li Jia, Huo Lijuan, Qian Tianwei. Sorption of cadmium in groundwater by FeS nanoparticles[J]. Chinese Journal of Environmental Engineering, 2016, 10(3): 1264-1270. doi: 10.12030/j.cjee.20160342 |
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| Authors: | Li Jia Huo Lijuan Qian Tianwei |
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| Affiliation: | 1.School of Environment & Safety, Taiyuan University of Science and Technology, Taiyuan 030024, China |
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| Abstract: | FeS nanoparticles were synthesized in the lab using carboxymethyl cellulose (CMC) as stabilizer. This paper discusses the influence of the reaction time, CMC amount, and humic acid on adsorption of cadmium by CMC-FeS nanoparticles. The results showed that a pseudo-second-order kinetic model was able to interpret the sorption kinetics, whereas a Freundlich isotherm model was proposed to simulate the isotherms. Adsorption capacity increased with increasing CMC content; when the mole ratio of CMC and FeS was 0.0010, the amount of cadmium by FeS adsorption reached the maximum. When the amount of CMC increased again, adsorption capacity decreased. The addition of humic acid also contributed to the adsorption of cadmium. |
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| Keywords: | CMC FeS nanoparticles adsorption kinetics |
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