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

被引:11
作者
Chun, Youngsang [1 ,2 ]
Ko, Young Gun [3 ]
Do, Taegu [1 ,4 ]
Jung, Youngkyun [1 ,4 ]
Kim, Seung Wook [2 ]
Chun, Yong Jin [5 ]
Choi, Ung Su [1 ]
机构
[1] Korea Inst Sci & Technol, Ctr Urban Energy Syst, Hwarang 14 Gil 5, Seoul 02792, South Korea
[2] Korea Univ, Dept Interdisciplinary Biomicro Syst Technol, Coll Engn, 145 Anam Ro 5, Seoul 02841, South Korea
[3] Korea Atom Energy Res Inst, Nucl Emergency & Environm Protect Div, 989-111 Daedeok Daero, Daejeon 34057, South Korea
[4] Univ Sci & Technol, Dept Energy & Environm Engn, 217 Gajeong Ro, Daejeon 34113, South Korea
[5] Chungwoon Univ, Dept Chem Engn, 113 Sukgol Ro, Incheon 22100, South Korea
关键词
Algae; Ecofriendly application; Electrorheology; Suspension; Polarizability; ELECTRIC-FIELD; SHEAR BEHAVIOR; PHOSPHATE; PARTICLES; FLUIDS; FABRICATION; WATER; PERFORMANCE; REMOVAL; PHOSPHORYLATION;
D O I
10.1016/j.colsurfa.2017.12.022
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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, Delta epsilon: 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.
引用
收藏
页码:354 / 363
页数:10
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