Experiment Study on Treatment of Chromium(VI)-Containing Groundwater by Modified Synthetic Zeolite

Abstract:

In order to improve the removal ability of hexavalent chromium on the synthetic zeolite, the synthetic zeolite was modified by FeSO_4, which was used to removal hexavalent chromium in groundwater. The results showed that the concentration of Cr (VI) can be reduced from 5.0mg/l to 0.03 mg/l, which meets the requirements of groundwater standards (0.05mg/l) by using modified zeolite in a liquid-to-solid ratio of 20 ml/g, pH=3 for 120 minutes. The adsorption of Cr (VI) on the modified synthetic zeolite could be described by the Langmuir and Freundlich adsorption isotherm. It is showed that the synthetic zeolite modified by FeSO₄ has good treatment effect and after treatment the pH of groundwater can reach around 6.8, which need no more pH adjustment.

• Periodical: Advanced Materials Research (Volumes 430-432)
• Pages: 1253-1256
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.430-432.1253
• Online since: January 2012
• Authors: Yu Jie Huang, Huan Zhen Zhang
• Keywords: Adsorption Isotherm, Cr(VI), Ground Water, Iron Vitriol, Synthetic Zeolite

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