Electrorheological properties of algae dispersed suspension: New application of harmful algae

Youngsang Chun, Young Gun Ko, Taegu Do, Youngkyun Jung, Seung Wook Kim, Yong Jin Chun, Ung Su Choi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The algae has been considered as a bane which should be removed due to its harmful influences on human health and aquatic ecosystems. Recently, various applications of the algae have been studied as a new alternative method instead of its sequestration, to treat vast algae blooms. Herein, algae particles dispersed suspensions have been investigated as a promising new application to electrorheological fluids without any further processing, such as chemical modification, extraction and carbonation. Algae particles dispersed silicone-oil suspensions exhibited good electrorheological properties under DC electric fields, and their electrorheological performances were enhanced with increase of electric fields. The alignment of algae particles along DC electric fields in the suspension, that inhibits the suspension flow by the drag of the dangling alignments and consequently increases the viscosity of the suspension, was observed under the electric fields. The ER properties of algae particles dispersed suspensions were same with (or similar to) those of cellulose phosphate dispersed suspension (yield stress: ca. 400 Pa at 3 kV/mm; polarizability, Δε: ca. 0.35) owing to the phosphate groups in the algae particles. Our research has demonstrated that the electrorheolgical fluids is very promising for the ecofriendly application of the mass-producing algae particles.

Original languageEnglish
Pages (from-to)354-363
Number of pages10
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume539
DOIs
Publication statusPublished - 2018 Feb 20

Fingerprint

algae
Algae
Suspensions
Electric fields
electric fields
phosphates
Phosphates
direct current
alignment
Silicone Oils
Electrorheological fluids
electrorheological fluids
Aquatic ecosystems
Carbonation
Chemical modification
ecosystems
silicones
cellulose
Silicones
drag

Keywords

  • Algae
  • Ecofriendly application
  • Electrorheology
  • Polarizability
  • Suspension

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Electrorheological properties of algae dispersed suspension : New application of harmful algae. / Chun, Youngsang; Ko, Young Gun; Do, Taegu; Jung, Youngkyun; Kim, Seung Wook; Chun, Yong Jin; Choi, Ung Su.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 539, 20.02.2018, p. 354-363.

Research output: Contribution to journalArticle

Chun, Youngsang ; Ko, Young Gun ; Do, Taegu ; Jung, Youngkyun ; Kim, Seung Wook ; Chun, Yong Jin ; Choi, Ung Su. / Electrorheological properties of algae dispersed suspension : New application of harmful algae. In: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2018 ; Vol. 539. pp. 354-363.
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