Abstract—With increasing concerns about environmental
protection are being made to develop biodegradable
starch-based materials using in pollutant treatment,
particularly for heavy metals removal. This study was
investigated on two cross-linkages of modified starch including
amino and carboxyl as the sorbents to remove hexavalent
chromium from aqueous solution. The overall resulted showed
that only amino crosslinking starch was effective on Cr (VI)
chemisorption. The carboxyl crosslinking and non-modified
starch were showed too poor adsorption performances. The pH
of the aqueous solutions is an important controlling parameter
in the heavy metal adsorption processes. The highest efficiency
was achieved in acidic condition about pH 5. However, modified
starch is an organic material so it can be contaminated in the
effluent. The ultrafiltration was used to separate modified
starch from the effluent for sufficiently treatment. Also the
operating conditions of modified starch enhanced ultrafiltration
for chromium (VI) removal were evaluated in this study.
Index Terms—Modified starch, chemisorptions, heavy metal
removal.
The authors are with School of Environmental Engineering, Institute of
Engineering, Suranaree University of Technology, Nakhon Ratchasima,
Thailand 30000 (e-mail: patcha@sut.ac.th).
[PDF]
Cite:Patcharin Racho and Pinitta Phalathip, "Modified Starch–Enhanced Ultrafiltration for Chromium (VI) Removal," Journal of Clean Energy Technologies vol. 2, no. 1, pp. 18-22, 2014.
