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ID 14656
file
creator
Baes, Aloysius U.
Okada, Mitsumasa
subject
bivalent cation
coagulation
moringa oleifera
natural coagulant
salt extraction
NDC
Pollution. Environmental engineering
description
This study focuses on the coagulation mechanism by the purified coagulant solution (MOC-SC-PC) with the coagulation active component extracted from M. oleifera seeds using salt solution. The addition of MOC-SC-PC into tap water formed insoluble matters. The formation was responsible for kaolin coagulation. On the other hand, insoluble matters were not formed when the MOC-SC-PC was added into distilled water. The formation was affected by Ca2+ or other bivalent cations which may connect each molecule of the coagulation active component in MOC-SC-PC and form netlike structure. The coagulation mechanism of MOC-SC-PC seemed to be an enmeshment by the insoluble matters with netlike structure. In case of Ca2+ ion (bivalent cations), at least 0.2mM was necessary for coagulation at 0.3 mg-C l-1 dose of MOC-SC-PC. Other coagulation mechanisms like compression of double layer, interparticle bridging or charge neutralization were not responsible for the coagulation by MOC-SC-PC.
journal title
Water Research
volume
Volume 35
issue
Issue 3
start page
830
end page
834
date of issued
2001-02
publisher
Elsevier
issn
0043-1354
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2001 Elsevier Science Ltd.
relation is version of URL
http://dx.doi.org/10.1016/S0043-1354(00)00296-7
department
Graduate School of Engineering



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