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Journal of Shanghai University >

2016 , Vol. 22 >Issue 2: 203 - 210

DOI: https://doi.org/10.3969/j.issn.1007-2861.2016.01.011

Removal of Cr(Ⅵ) in soil by chitosan stabilized nanoscale zero iron

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  • 1. School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China;
    2. Academy of Recycling Economy, Shanghai University, Shanghai 200072, China

Received date: 2016-01-18

  Online published: 2016-04-30

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Abstract

Removal efficiency of Cr(Ⅵ) in soils by chitosan stabilized nanoscale zero-valent iron was studied. Experimental results showed that the removal efficiency increased with zero-valent iron dosage. The maximum removal efficiency was 95.9%, six times of 100 mesh iron filing. The initial concentration of Cr(Ⅵ) in soil and pH value were all inversely proportional to the removal efficiency. Removal of Cr(Ⅵ) in soils by zero-valent iron was a result of the interaction of adsorption and reduction. The reduction process of nanoscale zero-valent iron accorded with pseudo first-order reaction kinetics, and the apparent rate constant kobs was 0.016/min.

Key words：  chitosan;  Cr(Ⅵ);  nanoscale zero-valent iron; soil

Cite this article

YAN Lijun1,2, LIU Moli1, HU Xuefeng1 . Removal of Cr(Ⅵ) in soil by chitosan stabilized nanoscale zero iron[J]. Journal of Shanghai University, 2016 , 22(2) : 203 -210 . DOI: 10.3969/j.issn.1007-2861.2016.01.011

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