Removal of Ni(II), Zn(II) and Pb(II) from aqueous solutions using cation-exchange resin in fixed-bed column

被引：5
|
作者：
Hamdzah, Myzairah [1 ]
Ujang, Zaini [2 ]
Nasef, Mohamed Mahmoud [3 ]
Abdullah, Norhayati [4 ]
Dahalan, Farrah Aini [5 ]
机构：
[1] UTM, RISE, CIPD, Johor Baharu 81310, Johor, Malaysia
[2] Minist Educ, Presint 5, Putrajaya 62200, Malaysia
[3] Univ Teknol Malaysia, Inst Future Energy, Ctr Hydrogen Energy, Jalan Semarak, Kuala Lumpur 54000, Malaysia
[4] UTM, UTM Palm Oil Res Ctr, Block T02, Johor Baharu 81310, Johor, Malaysia
[5] Univ Malaysia Perlis, Sch Environm Engn, Kompleks Pengajian Kejuruteraan Jejawi 3, Arau 02600, Perlis, Malaysia
来源：
DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 40期
关键词：
Cation exchange resins; Heavy metal; Bohart-Adam model; Thomas model; HEAVY-METAL REMOVAL; ION-EXCHANGE; RICE HUSK; II IONS; ADSORPTION; LEAD; PERFORMANCE; CADMIUM; COPPER(II); ADSORBENT;
D O I：
10.1080/19443994.2015.1095118
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Breakthrough curves for the removal of Ni(II), Zn(II), and Pb(II) from aqueous solutions using cation exchange resin (Dowex 50W) were determined at dynamic conditions in a fixed-bed column under ambient temperature. The experiments and data obtained were designed and analyzed using response surface methodology, respectively. Three operating parameters: flow rate (15-25mLmin(-1)), pH (3-9), and bed height (3-5cm) were investigated. Fixed-bed adsorption models namely Thomas model and Bohart-Adam model were adopted to describe the dynamics of metal adsorption in the column. The obtained experimental data were fitted to these models based on the kinetic constant k(BA) (mgmincm(-3)), k(TH) (cm(3)mg(-1)min), the maximum amount of metal exchange N-0 (mgcm(-3)), and the maximum adsorption capacities q(t)m (mg), accordingly. The Thomas model was found to best fit all the experimental conditions studied with correlation coefficients of 0.91, 0.97, and 0.92 for Ni(II), Zn(II), and Pb(II), respectively.
引用
收藏
页码：18770 / 18781
页数：12
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