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Removal of Toxic Metal‐Ion Pollutants from Water by Using Chemically Modified Carbon Powders
Author(s) -
Xiao Lei,
Wildgoose Gregory G.,
Crossley Alison,
Knight Robert,
Jones John H.,
Compton Richard G.
Publication year - 2006
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.200600136
Subject(s) - metal ions in aqueous solution , metal , graphite , aqueous solution , carbon fibers , chemistry , environmental remediation , aqueous medium , pollutant , inorganic chemistry , environmental chemistry , chemical engineering , materials science , nuclear chemistry , organic chemistry , contamination , composite number , ecology , composite material , biology , engineering
The thermodynamics of and the kinetic parameters controlling the sequestration of the toxic heavy‐metal ion Cd II from aqueous media by using a novel material consisting of glassy carbon microspheres (10–20 μm in diameter) chemically modified with L ‐cysteine methyl ester are presented. In an effort to reduce the cost and increase the efficiency of toxic‐metal‐ion removal, this modification strategy was expanded to attach L ‐cysteine methyl chemically ester to less‐expensive graphite powders (2–20 μm in diameter), and the thermodynamic and kinetic parameters of the sequestration of Cd II , Cu II , and As III toxic metal ions are presented. It was found that the use of chemically modified graphite powder greatly increased both the rate and the amount of metal ions removed from aqueous media. This work has important potential applications to filtration of drinking water and environmental remediation.