A study of the removal characteristics of heavy metals from wastewater by low-cost adsorbents

被引:255
作者
Salam, Omar E. Abdel [1 ]
Reiad, Neama A. [2 ]
ElShafei, Maha M. [2 ]
机构
[1] Cairo Univ, Fac Engn, Dept Chem Engn, Giza, Egypt
[2] Natl Res Ctr, Dept Environm Engn Housing & Bldg, Dokki, Egypt
关键词
Adsorption; Low-cost adsorbents; Industrial wastewater;
D O I
10.1016/j.jare.2011.01.008
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In this study, the adsorption behavior of some low-cost adsorbents such as peanut husk charcoal, fly ash, and natural zeolite, with respect to Cu2+, and Zn2+ ions, has been studied in order to consider its application to the purification of metal finishing wastewater. The batch method was employed: parameters such as pH, contact time, and initial metal concentration were studied. The influence of the pH of the metal ion solutions on the uptake levels of the metal ions by the different adsorbents used were carried out between pH 4 and pH 11. The optimum pH for copper and zinc removal was 6 in the case of peanut husk charcoal and natural zeolite, and it was 8 in case of fly ash. An equilibrium time of 2 h was required for the adsorption of Cu(II) and Zn(II) ions onto peanut husk charcoal and fly ash and an equilibrium time 3 h was required for the adsorption of Cu(II) and Zn(II) ions onto natural zeolite. Adsorption parameters were determined using both Langmuir and Freundlich isotherms, but the experimental data were better fitted to the Langmuir equation than to Freundlich equation. The results showed that peanut husk charcoal, fly ash and natural zeolite all hold potential to remove cationic heavy metal species from industrial wastewater in the order fly ash < peanut husk charcoal< natural zeolite. (C) 2011 Cairo University. Production and hosting by Elsevier B.V. All rights reserved.
引用
收藏
页码:297 / 303
页数:7
相关论文
共 27 条
[1]   Adsorption of heavy metal ions from aqueous solution by fly ash [J].
Alinnor, I. J. .
FUEL, 2007, 86 (5-6) :853-857
[2]   Tea waste as a low cost adsorbent for the removal of Cu and Pb from wastewater [J].
Amarasinghe, B. M. W. P. K. ;
Williams, R. A. .
CHEMICAL ENGINEERING JOURNAL, 2007, 132 (1-3) :299-309
[3]   A new approach to modification of natural adsorbent for heavy metal adsorption [J].
Argun, Mehmet Emin ;
Dursun, Sukru .
BIORESOURCE TECHNOLOGY, 2008, 99 (07) :2516-2527
[4]   Adsorption of aqueous Zn(II) species on synthetic zeolites [J].
Badillo-Almaraz, V ;
Trocellier, P ;
Dávila-Rangel, I .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2003, 210 :424-428
[5]   A STUDY OF THE PROCESS OF PYROLYSIS IN A WATER-VAPOR STREAM OF ACTIVATED CARBONS, PREPARED FROM AGRICULTURAL BY-PRODUCTS BY SOME PHYSICOCHEMICAL METHODS [J].
BUDINOVA, T ;
GERGOVA, K ;
PETROV, N ;
MINKOVA, V .
THERMOCHIMICA ACTA, 1994, 244 :267-276
[6]   The use of fly ash as a low cost, environmentally friendly alternative to activated carbon for the removal of heavy metals from aqueous solutions [J].
Cetin, Serpil ;
Pehlivan, Erol .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2007, 298 (1-2) :83-87
[7]   A study on removal characteristics of heavy metals from aqueous solution by fly ash [J].
Cho, HC ;
Oh, D ;
Kim, K .
JOURNAL OF HAZARDOUS MATERIALS, 2005, 127 (1-3) :187-195
[8]   Arsenic adsorption from aqueous solution on synthetic zeolites [J].
Chutia, Pratap ;
Kato, Shigeru ;
Kojima, Toshinori ;
Satokawa, Shigeo .
JOURNAL OF HAZARDOUS MATERIALS, 2009, 162 (01) :440-447
[9]   The removal of heavy metal cations by natural zeolites [J].
Erdem, E ;
Karapinar, N ;
Donat, R .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 280 (02) :309-314
[10]  
Hashem MA, 2007, INT J PHYS SCI, V2, P178