Retardation of wetting for membrane distillation by adjusting major components of seawater

Hye Won Kim; Taekgeun Yun; Seungkwan Hong; Seockheon Lee; Seongpil Jeong

doi:10.1016/j.watres.2020.115677

Retardation of wetting for membrane distillation by adjusting major components of seawater

Hye Won Kim, Taekgeun Yun, Seungkwan Hong, Seockheon Lee, Seongpil Jeong

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

Wetting by fouling is phenomenon specific to membrane distillation (MD) and are regarded as challenges to the seawater membrane distillation (SWMD) process. To understand fouling and wetting, the influence of Mg and Sr crystals, which can potentially cause scaling, as well as Ca crystals deposited on the membrane surface were investigated. Mg(OH)₂ and CaSO₄ had significant impact on fouling and wetting. Even if CaCO₃ and SrSO₄ had no effects on fouling and wetting as single salts, CaCO₃ and CaSO₄ were dominant in synthetic seawater without Mg(OH)₂. However, the occurrence of Mg(OH)₂ scales became a cause for concern if Ca ion was removed from seawater for the prevention of fouling and wetting. Therefore, Mg as well as Ca should be removed for proper fouling and wetting control. NaOH/Na₂CO₃ softening was used for the removal of Ca and Mg ions. In addition, based on the inhibition effects of Mg ions on Ca scales, a new pretreatment method involving the injection of MgCl₂ to increase the Mg /Ca ratio was examined.

Original language	English
Article number	115677
Journal	Water Research
Volume	175
DOIs	https://doi.org/10.1016/j.watres.2020.115677
Publication status	Published - 2020 May 15

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

Chemical softening
Membrane distillation
Mg addition
Retardation of wetting
Visualization system

ASJC Scopus subject areas

Water Science and Technology
Ecological Modelling
Pollution
Waste Management and Disposal
Environmental Engineering
Civil and Structural Engineering

Access to Document

10.1016/j.watres.2020.115677

Cite this

@article{35a0a54add1e449da95e00d0eca4e1e4,

title = "Retardation of wetting for membrane distillation by adjusting major components of seawater",

abstract = "Wetting by fouling is phenomenon specific to membrane distillation (MD) and are regarded as challenges to the seawater membrane distillation (SWMD) process. To understand fouling and wetting, the influence of Mg and Sr crystals, which can potentially cause scaling, as well as Ca crystals deposited on the membrane surface were investigated. Mg(OH)2 and CaSO4 had significant impact on fouling and wetting. Even if CaCO3 and SrSO4 had no effects on fouling and wetting as single salts, CaCO3 and CaSO4 were dominant in synthetic seawater without Mg(OH)2. However, the occurrence of Mg(OH)2 scales became a cause for concern if Ca ion was removed from seawater for the prevention of fouling and wetting. Therefore, Mg as well as Ca should be removed for proper fouling and wetting control. NaOH/Na2CO3 softening was used for the removal of Ca and Mg ions. In addition, based on the inhibition effects of Mg ions on Ca scales, a new pretreatment method involving the injection of MgCl2 to increase the Mg /Ca ratio was examined.",

keywords = "Chemical softening, Membrane distillation, Mg addition, Retardation of wetting, Visualization system",

author = "Kim, {Hye Won} and Taekgeun Yun and Seungkwan Hong and Seockheon Lee and Seongpil Jeong",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = may,

day = "15",

doi = "10.1016/j.watres.2020.115677",

language = "English",

volume = "175",

journal = "Water Research",

issn = "0043-1354",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Retardation of wetting for membrane distillation by adjusting major components of seawater

AU - Kim, Hye Won

AU - Yun, Taekgeun

AU - Hong, Seungkwan

AU - Lee, Seockheon

AU - Jeong, Seongpil

PY - 2020/5/15

Y1 - 2020/5/15

N2 - Wetting by fouling is phenomenon specific to membrane distillation (MD) and are regarded as challenges to the seawater membrane distillation (SWMD) process. To understand fouling and wetting, the influence of Mg and Sr crystals, which can potentially cause scaling, as well as Ca crystals deposited on the membrane surface were investigated. Mg(OH)2 and CaSO4 had significant impact on fouling and wetting. Even if CaCO3 and SrSO4 had no effects on fouling and wetting as single salts, CaCO3 and CaSO4 were dominant in synthetic seawater without Mg(OH)2. However, the occurrence of Mg(OH)2 scales became a cause for concern if Ca ion was removed from seawater for the prevention of fouling and wetting. Therefore, Mg as well as Ca should be removed for proper fouling and wetting control. NaOH/Na2CO3 softening was used for the removal of Ca and Mg ions. In addition, based on the inhibition effects of Mg ions on Ca scales, a new pretreatment method involving the injection of MgCl2 to increase the Mg /Ca ratio was examined.

AB - Wetting by fouling is phenomenon specific to membrane distillation (MD) and are regarded as challenges to the seawater membrane distillation (SWMD) process. To understand fouling and wetting, the influence of Mg and Sr crystals, which can potentially cause scaling, as well as Ca crystals deposited on the membrane surface were investigated. Mg(OH)2 and CaSO4 had significant impact on fouling and wetting. Even if CaCO3 and SrSO4 had no effects on fouling and wetting as single salts, CaCO3 and CaSO4 were dominant in synthetic seawater without Mg(OH)2. However, the occurrence of Mg(OH)2 scales became a cause for concern if Ca ion was removed from seawater for the prevention of fouling and wetting. Therefore, Mg as well as Ca should be removed for proper fouling and wetting control. NaOH/Na2CO3 softening was used for the removal of Ca and Mg ions. In addition, based on the inhibition effects of Mg ions on Ca scales, a new pretreatment method involving the injection of MgCl2 to increase the Mg /Ca ratio was examined.

KW - Chemical softening

KW - Membrane distillation

KW - Mg addition

KW - Retardation of wetting

KW - Visualization system

UR - http://www.scopus.com/inward/record.url?scp=85081257588&partnerID=8YFLogxK

U2 - 10.1016/j.watres.2020.115677

DO - 10.1016/j.watres.2020.115677

M3 - Article

C2 - 32179271

AN - SCOPUS:85081257588

SN - 0043-1354

VL - 175

JO - Water Research

JF - Water Research

M1 - 115677

ER -

Retardation of wetting for membrane distillation by adjusting major components of seawater

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this