Application of the extended DLVO approach to mechanistically study the algal flocculation

Reginah Nabweteme, Mi Yoo, Hyuk Sung Kwon, Youn Joong Kim, Geelsu Hwang, Chang Ha Lee, Ik Sung Ahn

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The extended DLVO theory was applied to study the mechanism of algal flocculation with clays. Montmorillonite-K10, montmorillonite-KSF, kaolinite, and loess were used as the model clays whereas Microcystis sp. and Prorocentrum minimum were used as the model freshwater algae and marine algae, respectively. Montmorillonite-KSF showed the highest flocculation efficiency not only for Microcystis sp. especially at pH 7 but also for P. minimum. From the application of the extended DLVO theory, the electrostatic and the Lewis acid-base interactions were found to be the dominant mechanisms for the flocculation of Microcystis sp. in freshwater and P. minimum in seawater, respectively.

Original languageEnglish
Pages (from-to)289-294
Number of pages6
JournalJournal of Industrial and Engineering Chemistry
Volume30
DOIs
Publication statusPublished - 2015 Oct 25

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Flocculation
Clay minerals
Algae
Clay
Bentonite
Kaolin
Lewis Acids
Kaolinite
Seawater
Electrostatics
Acids
montmorillonite KSF
clay

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

Nabweteme, Reginah ; Yoo, Mi ; Kwon, Hyuk Sung ; Kim, Youn Joong ; Hwang, Geelsu ; Lee, Chang Ha ; Ahn, Ik Sung. / Application of the extended DLVO approach to mechanistically study the algal flocculation. In: Journal of Industrial and Engineering Chemistry. 2015 ; Vol. 30. pp. 289-294.
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Application of the extended DLVO approach to mechanistically study the algal flocculation. / Nabweteme, Reginah; Yoo, Mi; Kwon, Hyuk Sung; Kim, Youn Joong; Hwang, Geelsu; Lee, Chang Ha; Ahn, Ik Sung.

In: Journal of Industrial and Engineering Chemistry, Vol. 30, 25.10.2015, p. 289-294.

Research output: Contribution to journalArticle

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AB - The extended DLVO theory was applied to study the mechanism of algal flocculation with clays. Montmorillonite-K10, montmorillonite-KSF, kaolinite, and loess were used as the model clays whereas Microcystis sp. and Prorocentrum minimum were used as the model freshwater algae and marine algae, respectively. Montmorillonite-KSF showed the highest flocculation efficiency not only for Microcystis sp. especially at pH 7 but also for P. minimum. From the application of the extended DLVO theory, the electrostatic and the Lewis acid-base interactions were found to be the dominant mechanisms for the flocculation of Microcystis sp. in freshwater and P. minimum in seawater, respectively.

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