Removal of mercury(II) from wastewater using camel bone charcoal

被引：103

作者：

Hassan, Saad S. M. ^{[1
]}

Awwad, Nasser S.

Aboterika, Awaad H. A. ^{[1
]}

机构：

[1] Ain Shams Univ, Fac Sci, Dept Chem, Cairo, Egypt

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 154卷 / 1-3期

关键词：

mercury(II); camel bone charcoal; removal of mercury; wastewater; hazardous waste; adsorption; isotherms;

D O I：

10.1016/j.jhazmat.2007.11.003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Camel bone charcoal is used as an adsorbent for the removal of Hg(II) from wastewater effluents. The equilibrium data are fitted to Langmiur isotherm rather than linear and Freundlich isotherms. The adsorption capacity Q degrees is 28.24 mg of Hg(II)/g of the adsorbent. The optimum removal conditions are pH2, contact time 30 min and temperature 25 degrees C. A comparison of the adsorption capacity (Q degrees) of camel bone charcoal with different adsorbents previously used for Hg(H) removal from wastewater effluents reveals its remarkable efficiency over many other treated and untreated natural and synthetic adsorbents. X-ray fluorescence and infrared spectrometry of camel bone charcoal after contact with mercury solutions confirm surface adsorption of Hg(II) ions. Electron microscopy reveals the formation of a spongy like structure on the adsorbent surface due to Hg(II) adsorption. Quantitative removal of mercury from hazardous effluents is demonstrated. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：992 / 997

页数：6

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