Removal of mercury from aqueous solutions using activated carbon prepared from agricultural by-product/waste

被引：166

作者：

Rao, M. Madhava ^{[1
]}

Reddy, D. H. K. Kumar ^{[1
]}

Venkateswarlu, Padala ^{[1
]}

Seshaiah, K. ^{[1
]}

机构：

[1] Sri Venkateswara Univ, Dept Chem, Analyt & Environm Chem Div, Tirupati 517502, Andhra Pradesh, India

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2009年 / 90卷 / 01期

关键词：

Mercury; Removal; Ceiba pentandra hulls; Phaseolus aureus hulls; Cicer arietinum waste; SURFACE FUNCTIONAL-GROUPS; WASTE-WATER; CHEMICAL-PROPERTIES; SEWAGE-SLUDGE; BAGASSE PITH; ADSORPTION; CADMIUM; EQUILIBRIUM; KINETICS; SORPTION;

D O I：

10.1016/j.jenvman.2007.12.019

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Removal of mercury from aqueous Solutions using activated carbon prepared from Ceiba pentandra hulls, Phaseolus aureus hulls and Cicer arietinum waste was investigated. The influence of various parameters such as effect of pH, contact time, initial metal ion concentration and adsorbent dose for the removal of mercury was Studied using a batch process. The experiments demonstrated that the adsorption process corresponds to the pseudo-second-order-kinetic models and the equilibrium adsorption data fit the Freundlich isotherm model well. The prepared adsorbents ACCPH, ACPAH and ACCAW had removal capacities of 25.88 mg/g, 23.66 mg/g and 22.88 mg/g, respectively, at an initial Hg(II) concentration of 40 mg/L. The order of Hg(II) removal capacities of these three adsorbents was ACCPH > ACPAH > ACCAW. The adsorption behavior of the activated carbon is explained on the basis of its chemical nature. The feasibility of regeneration of spent activated carbon adsorbents for recovery of Hg(II) and reuse of the adsorbent was determined using HCl solution. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：634 / 643

页数：10

共 27 条

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