Paper Title:
Effects of pH and Anion Species on Cr(VI) Removal by Magnetite
  Abstract

Magnetite was prepared to remove poisonous hexavalent chromium [Cr(VI)] from aqueous solution. Batch experiments were conducted to measure the effects on removal of Cr(VI) of different parameters such as ionic strength, pH, and initial concentration. Results demonstrated that the removal of Cr(VI) on magnetite was decreased with the increase of pH in the range of 3.4-5.0, but independent of ionic strength. The removal percentage of Cr(VI) also decreased with the increase of Cr(VI) concentration in the range of 50-200 mg/L. At pH 3.5 and 5.0, the presence of SO42− retarded the removal of Cr(VI) via electrostatic interactions and/or competition for surfaces sites on magnetite. The pH of the medium and presence of anion species were critical factors in the removal of Cr(VI) from aqueous solution.

  Info
Periodical
Advanced Materials Research (Volumes 233-235)
Edited by
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Pages
1055-1058
DOI
10.4028/www.scientific.net/AMR.233-235.1055
Citation
H. T. Ren, S. Y. Jia, Y. Liu, S. H. Wu, Y. X. Xing, Y. B. Zhang, "Effects of pH and Anion Species on Cr(VI) Removal by Magnetite", Advanced Materials Research, Vols. 233-235, pp. 1055-1058, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xiao Qing Luo, Xiao Yan Lin, Xue Gang Luo, An Kai Luo, Xuan Liang
Abstract:This paper reports the feasibility of using rice husk to remove Ag+ from synthetic wastewater. Effect of various adsorption parameters,...
45
Authors: Zhang Weng, Z.Q. Jing, Yu Kong, Wei Shen
Abstract:This study investigated the adsorption of congo red by activated carbon-attapulgite composite adsorbent (ACA) and zeolite-attapulgite...
34
Authors: Jian Wei Lin, Yan Hui Zhan, Yun Qing Xing, Yu Liu
Materials Engineering
Abstract:Surfactant-modified zeolites (SMZ) with different coverage types were prepared by loading the cetylpyridinium bromide (CPB) onto the surface...
1772
Authors: Zhi Li He, Zhan Fei He, Zhi Xia He, Yuan Yuan Chen
Chapter 1: Materials Behavior
Abstract:In this work, the magnesia modified activated carbon (MgO-AC) adsorbent was characterized by scanning electron microscopy (SEM). The effects...
47
Authors: Zheng Jun Gong, Wenbo Zhou, Zhong Ping Qiu
Chapter 7: Pollution Control (Air, Water, Solid)
Abstract:In this study, removal of copper(Ⅱ) from aqueous solutions was examined using corn stalk. In the batch mode adsorption studies, the effects...
1950