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Title of Journal: Korean J Chem Eng

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Abbravation: Korean Journal of Chemical Engineering

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Springer US

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DOI

10.1002/bapi.200990004

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ISSN

1975-7220

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Hydrous iron oxide for removal of inorganic contam

Authors: Rupak Aryal Sarvanamuthu Vigneswaran Paripurnanda Loganathan Jayakumar Kandasamy Thamer Mohammed
Publish Date: 2011/06/16
Volume: 28, Issue: 8, Pages: 1706-1712
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Abstract

Urban stormwater runoff which consists of inorganic and organic contaminants is a major source of pollutants to receiving waters and therefore they need to be removed Simultaneous removal of contaminants Cd2+ Cu2+ Ni2+ Zn2+ heavy metal cations and SeO 4 2− oxyanion from a simulated stormwater by a hydrous ferric oxide HFO was studied in batch and column sorption experiments In the batch experiment the rate of sorption of the ions was rapid at the beginning and reached equilibrium in approximately 300 min The amounts of ions sorbed were proportionate to the respective initial concentration of the ions added to the HFO Cluster analysis showed that all heavy metals had similar sorption behavior whereas Se had a distinctly different sorption process Of the three different kinetic models tested the pseudofirst order kinetic model fitted the data the best The column experimental results beyond 180 min were consistent with those of the batch experiment that the removal efficiencies of the ions were in proportion to the ion concentration in the feed Below 180 min Cu appeared to be preferentially removed than Zn

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