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Published on: December 5, 2019
[Removing Cr(VI) by composite biosorbent of nano FeO4/Sphaerotilus natans]
Xiao-hui Guan1, Yu-chun Qin, Yu-hua Qin
1School of Chemistry Engineering, Northeast Dianli University, Jilin 132012, China. guanxh@mail.nedu.edu.cn
Abstract:
The process of biosorption and the adsorbing mechanisms of Fe3 O4/Sphaerotilus natans to Cr(VI) were studied. The experiment results showed that pH value was main influencing factors on adsorption to Cr(VI). In the range of pH 2 to 3, the adsorbance of the composite biosorbent to Cr(VI) is 0.0217 mmol/g. The regeneration efficiency is 90% when the composite biosorbent was regenerated by HCl solution. --CONH2-- and --NH-- were principal activated groups of composite biosorbent. Cr(VI) can primarily combine with the surface of Fe3O4/Sphaerotilus natans by electrostatic attraction.
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