Evaluation of Plant Biomass as Reducing Agent to Cr(VI) from Electroplating Effluent and Removal of Cr(III) by Adsorption on Hematite Ore
作者: S.S. ModhaveD.R. Shinde
刊名: Asian Journal of Chemistry, 2015, Vol.27 (3)
来源数据库: Asian Journal of Chemistry
DOI: 10.14233/ajchem.2015.17118
关键词: RemovalCr(III)Electroplating effluentHematite.
原始语种摘要: The UV-visible absorption spectra of untreated electroplating effluent indicate that it contain Cr(VI) in the form of dichromate (Cr2O7 2-). Quantitative analysis indicated that effluent was acidic in nature and consists of about 146 ppm Cr2O7 2-. Primary experiment clearly indicated that fresh biomass of plants such as cabbage leaves, cauliflower leaves, Sisuvium, biomass of common agriculture weed, leaves of Colocasia arum, etc. can be used as reducing agent to Cr(VI). pH dependence study showed that acidic and low pH is essential for faster reduction of Cr(VI) to Cr(III). At pH of electroplating effluent and optimized effluent to biomass ratio 60 to 105 minutes were required for nearly 100 % reduction of Cr(VI) to Cr(III). After complete reduction of Cr(VI), it was removed as Cr(OH)3...
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  • Adsorption 吸附
  • effluent 
  • VI Vectored Interrupt
  • dichromate 重铬酸盐
  • reduction 减少
  • acidic 含大量硅酸的
  • electroplating 电解沉积
  • removal 消去
  • biomass 生物量
  • ratio