松树锯末对Pb(II)与Ni(II)的吸附研究

doi:10.6040/j.issn.1672-3961.0.2014.217

山东大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (2): 75-81.doi: 10.6040/j.issn.1672-3961.0.2014.217

松树锯末对Pb(II)与Ni(II)的吸附研究

余美琼, 杨金杯, 陈秀宇, 邓殳

福建师范大学福清分校海洋与生化工程学院, 福建福州 350300

收稿日期:2014-08-05 修回日期:2015-03-17 出版日期:2015-04-20 发布日期:2014-08-05
作者简介:余美琼(1981-),女,福建福清人,讲师,硕士,主要研究方向为废水处理和固体废弃物回收利用.E-mail:joan091600@126.com
基金资助:
福建省教育厅科研资助项目(JA12355,JA14338,JB12262);福建师范大学福清分校科研创新基金资助项目(KY2012001)

Adsorption of Pb(II) and Ni(II) by pine sawdust

YU Meiqiong, YANG Jinbei, CHEN Xiuyu, DENG Shu

School of Ocean Science and Biochemistry Engineering, Fuqing Branch of Fujian Normal University, Fuzhou 350300, Fujian, China

Received:2014-08-05 Revised:2015-03-17 Online:2015-04-20 Published:2014-08-05

摘要/Abstract

摘要： 以松树锯末为吸附剂,研究其对水中Pb(II)和Ni(II)的吸附性能,研究了锯末用量、搅拌速度、溶液初始pH值等对吸附效果的影响及其吸附动力学和热力学性能。研究结果表明,锯末对Pb(II)和Ni(II)具有良好的吸附能力。锯末对Pb(II)和Ni(II)吸附过程均符合拟二级吸附动力学模型(R²≥0.997 7),锯末吸附Pb(II)和Ni(II)的活化能分别为9.808 7 kJ/mol和2.859 4 kJ/mol;锯末对Pb(II)和Ni(II)等温吸附符合Langmuir模型(R²≥0.999 2)。热力学研究表明,锯末对Pb(II)和Ni(II)的吸附是自发的放热过程。

关键词: Ni(II), 动力学, 热力学, 吸附, Pb(II), 锯末

Abstract: Sawdust was used to remove Pb(II) and Ni(II) from water as an absorbent. Effects of sawdust dosage, stirring speed and pH on the adsorption capacity, adsorption kinetics and thermodynamics were discussed. The results showed that sawdust had a good adsorption capacity for Pb(II) and Ni(II). The adsorption process corresponded with pseudo-second-order kinetic model (R²≥0.997 7), the activation energy were 9.808 7 kJ/mol for Pb(II) and 2.859 4 kJ/mol for Ni(II), respectively. The adsorption isotherms of Pb(II) and Ni(II) were consistent well with the Langmuir isotherm (R²≥0.999 2). Thermodynamics analysis showed that the adsorption process was spontaneous and exothermic.

Key words: sawdust, Pb(II), Ni(II), adsorption, thermodynamics, kinetics

中图分类号:

X703.1

余美琼, 杨金杯, 陈秀宇, 邓殳. 松树锯末对Pb(II)与Ni(II)的吸附研究[J]. 山东大学学报(工学版), 2015, 45(2): 75-81.

YU Meiqiong, YANG Jinbei, CHEN Xiuyu, DENG Shu. Adsorption of Pb(II) and Ni(II) by pine sawdust[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2015, 45(2): 75-81.

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松树锯末对Pb(II)与Ni(II)的吸附研究

Adsorption of Pb(II) and Ni(II) by pine sawdust

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