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The use of dyestuff‐treated rice hulls for removal of heavy metals from waste water
Author(s) -
Suemitsu R.,
Uenishi R.,
Akashi I.,
Nakano M.
Publication year - 1986
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1986.070310108
Subject(s) - adsorption , nitric acid , rice hulls , hydrochloric acid , metal ions in aqueous solution , aqueous solution , chemistry , metal , wastewater , nuclear chemistry , heavy metals , chromatography , environmental chemistry , inorganic chemistry , environmental engineering , materials science , environmental science , organic chemistry , composite material
Rice hulls, when coated with the reactive dye of Procion Red or Procion Yellow, was found to be highly effective for removal of many metal ions from aqueous solutions both in batch and column method. When 120–130 ppm solutions were used, quantitative removal could be achieved with Pb 2+ , Cd 2+ , and Hg 2+ . After the adsorption of metal ions, the substrate could be recovered almost completely by treating with dilute hydrochloric or nitric acid solution, and used repeatedly.