Adsorptive removal of Cd(II) from aqueous solution using natural and modified rice husk

被引：96
|
作者：
Ye, Hengpeng [1 ]
Zhu, Qing
Du, Dongyun
机构：
[1] S Cent Univ Nationalties, Inst Environm Engn & Sci, Sch Chem & Mat Sci,State Ethn Affairs Commiss, Key Lab Catalysis & Mat Sci, Wuhan 430074, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 14期
关键词：
Rice husk; Cd(II) adsorption; Adsorption capacity; Wastewater; WASTE-WATER; METAL-IONS; CADMIUM; PHOSPHATE; KINETICS; CU2+; NI2+; ASH; RED;
D O I：
10.1016/j.biortech.2010.02.027
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this study, the natural and modified rice husk were tested to remove Cd(II) ions from water. The modified rice husk was prepared by being treated with alkali. The results showed the Cd(II) adsorption capacity was 73.96, 125.94 mg/g, respectively, for the natural and modified rice husk. The modified rice husk had faster kinetics and higher adsorption capacities than the natural rice husk, which can be attributed to the surface structural changes of the material. Equilibrium adsorption data are more consistent with the Langmuir isotherm equation than with the Freundlich equation. The Cd(II) adsorption on the two adsorbents tends to increase with the increase of pH. The optimum pH for Cd(II) adsorption is 6.5. Both pseudo-first-order and pseudo-second-order equations were able to describe properly the kinetics of Cd(II) adsorption. The desorbability of Cd(II) is about 95.8-99.1% by 0.1 M HCl solution. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：5175 / 5179
页数：5
相关论文
共 50 条
  • [21] REMOVAL OF URANIUM(VI) FROM AQUEOUS SOLUTION BY RICE HUSK
    Xia, Liangshu
    Li, Reirei
    Xia, Yiqun
    Zheng, Weina
    Tans, Kaixuan
    ENVIRONMENT PROTECTION ENGINEERING, 2017, 43 (04): : 41 - 53
  • [22] Adsorptive Removal of Fluoride from Aqueous Solution Using Modified Fly Ash
    Li Caihong
    Gao Huimin
    Lu Jun
    Wang Peipei
    PROGRESS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, VOL II, PTS A AND B, 2009, : 2339 - 2344
  • [23] CuAl LDH/Rice Husk Biochar Composite for Enhanced Adsorptive Removal of Cationic Dye from Aqueous Solution
    Palapa, Neza Rahayu
    Taher, Tarmizi
    Rahayu, Bakri Rio
    Mohadi, Risfidian
    Rachmat, Addy
    Lesbani, Aldes
    BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS, 2020, 15 (02): : 525 - 537
  • [24] Efficient Removal of Cd(II) from Aqueous Solution by Dehydrated Hazelnut Husk Carbon
    Imamoglu, Mustafa
    Yildiz, Hulya
    Altundag, Huseyin
    Turhan, Yasemin
    JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, 2015, 36 (02) : 284 - 290
  • [25] Adsorptive removal of lead(II) from an aqueous solution by chemically modified cottonseed cake
    Malathi, S.
    Krishnaveni, N.
    Sudha, R.
    RESEARCH ON CHEMICAL INTERMEDIATES, 2016, 42 (03) : 2285 - 2302
  • [26] Adsorptive removal of lead(II) from an aqueous solution by chemically modified cottonseed cake
    S. Malathi
    N. Krishnaveni
    R. Sudha
    Research on Chemical Intermediates, 2016, 42 : 2285 - 2302
  • [27] Removal of Cu(II) from aqueous solution using the rice husk carbons prepared by the physical activation process
    Zhang, Jinghui
    Fu, Hao
    Lv, Xiaoshu
    Tang, Jie
    Xu, Xinhua
    BIOMASS & BIOENERGY, 2011, 35 (01): : 464 - 472
  • [28] Enhanced Cationic Dyes Removal from Aqueous Solution by Oxalic Acid Modified Rice Husk
    Zou, Weihua
    Li, Ke
    Bai, Hongjuan
    Shi, Xiaolan
    Han, Runping
    JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2011, 56 (05): : 1882 - 1891
  • [29] Chemically Modified Rice Husk Adsorbents, Characterization and Removal of Palladium(II) From Aqueous Solutions
    Vyas, Ami H.
    Jauhari, Smita
    Murthy, Z. V. P.
    JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, 2013, 34 (03) : 369 - 380
  • [30] Fixed Bed Column Filled with Rice Husk for the Removal of Cu (II) from Aqueous Solution
    Deng, Zaifang
    Luo, Xuegang
    Lin, Xiaoyan
    ECO-MATERIALS PROCESSING AND DESIGN XI, 2010, 658 : 53 - 56
12345