A comparative evaluation of hexavalent chromium treatment in contaminated soil by calcium polysulfide and green-tea nanoscale zero-valent iron.
作者： Maria Chrysochoou , Chad P. Johnston , Geeta Dahal
DOI: 10.1016/J.JHAZMAT.2011.11.003
关键词: Stoichiometry 、 Soil contamination 、 Green tea extract 、 Hexavalent chromium 、 Zerovalent iron 、 Polysulfide 、 Chemistry 、 Calcium 、 Inorganic chemistry 、 Environmental remediation
摘要: Abstract A column study for hexavalent chromium (Cr(VI)) removal from contaminated soil was performed using calcium polysulfide (CPS) and nanoscale zero-valent iron stabilized with green tea extract (GT-nZVI). Injection of CPS at 12 times the stoichiometric requirement (12×) resulted in quantitative Cr(VI) up to 195 days equivalent groundwater flow. Solid-bound reduced >99% (
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