Effect of new photocatalytic coagulant on NF membrane fouling

In Hwan Choi, Su Min Lee, In Chul Kim, Byoung Ryul Min, Kew Ho Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In this research, the results of the photocatalytic coagulation of humic acids (HAs) in aqueous solution were investigated, and the effect of the photocatalytic coagulation on the fouling of nanofiltration (NF) membrane was investigated. Nanoparticles of copper-doped titania were synthesized by a sol-gel method using titanium isopropoxide and cuperous chloride. The behavior of a thin-film composite NF membrane was investigated as a function of solution chemistry (ionic composition and strength and calcium and organic concentration). In the membrane fouling test, calcium bridges between the natural organic matter (NOM) and the membrane led to severe flux decline because of the development of densely compacted fouling layer on the membrane surface. The photocatalytic coagulation was applied to remove humic acids prior to membrane filtration. In the photocatalytic coagulation, the UV absorbance, chemical oxygen demand (COD), and cations decreased by 99%, 90%, and 10%, respectively, while anions and conductivity increased to 39% and 79%. The results emphasized that the photocatalytic coagulation could be an effective alternative solution for the elimination of the humic acids and for the prevention of the membrane fouling.

Original languageEnglish
Pages (from-to)2280-2285
Number of pages6
JournalIndustrial and Engineering Chemistry Research
Volume46
Issue number8
DOIs
Publication statusPublished - 2007 Apr 11

Fingerprint

Nanofiltration membranes
Coagulants
Membrane fouling
Coagulation
Humic Substances
Fouling
Membranes
Calcium
Titanium
Composite membranes
Chemical oxygen demand
Biological materials
Sol-gel process
Anions
Cations
Chlorides
Copper
Negative ions
Positive ions
Fluxes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Choi, In Hwan ; Lee, Su Min ; Kim, In Chul ; Min, Byoung Ryul ; Lee, Kew Ho. / Effect of new photocatalytic coagulant on NF membrane fouling. In: Industrial and Engineering Chemistry Research. 2007 ; Vol. 46, No. 8. pp. 2280-2285.
@article{2f7b826a75804461aed12ecfe623bc48,
title = "Effect of new photocatalytic coagulant on NF membrane fouling",
abstract = "In this research, the results of the photocatalytic coagulation of humic acids (HAs) in aqueous solution were investigated, and the effect of the photocatalytic coagulation on the fouling of nanofiltration (NF) membrane was investigated. Nanoparticles of copper-doped titania were synthesized by a sol-gel method using titanium isopropoxide and cuperous chloride. The behavior of a thin-film composite NF membrane was investigated as a function of solution chemistry (ionic composition and strength and calcium and organic concentration). In the membrane fouling test, calcium bridges between the natural organic matter (NOM) and the membrane led to severe flux decline because of the development of densely compacted fouling layer on the membrane surface. The photocatalytic coagulation was applied to remove humic acids prior to membrane filtration. In the photocatalytic coagulation, the UV absorbance, chemical oxygen demand (COD), and cations decreased by 99{\%}, 90{\%}, and 10{\%}, respectively, while anions and conductivity increased to 39{\%} and 79{\%}. The results emphasized that the photocatalytic coagulation could be an effective alternative solution for the elimination of the humic acids and for the prevention of the membrane fouling.",
author = "Choi, {In Hwan} and Lee, {Su Min} and Kim, {In Chul} and Min, {Byoung Ryul} and Lee, {Kew Ho}",
year = "2007",
month = "4",
day = "11",
doi = "10.1021/ie060917s",
language = "English",
volume = "46",
pages = "2280--2285",
journal = "Industrial and Engineering Chemistry Research",
issn = "0888-5885",
number = "8",

}

Effect of new photocatalytic coagulant on NF membrane fouling. / Choi, In Hwan; Lee, Su Min; Kim, In Chul; Min, Byoung Ryul; Lee, Kew Ho.

In: Industrial and Engineering Chemistry Research, Vol. 46, No. 8, 11.04.2007, p. 2280-2285.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of new photocatalytic coagulant on NF membrane fouling

AU - Choi, In Hwan

AU - Lee, Su Min

AU - Kim, In Chul

AU - Min, Byoung Ryul

AU - Lee, Kew Ho

PY - 2007/4/11

Y1 - 2007/4/11

N2 - In this research, the results of the photocatalytic coagulation of humic acids (HAs) in aqueous solution were investigated, and the effect of the photocatalytic coagulation on the fouling of nanofiltration (NF) membrane was investigated. Nanoparticles of copper-doped titania were synthesized by a sol-gel method using titanium isopropoxide and cuperous chloride. The behavior of a thin-film composite NF membrane was investigated as a function of solution chemistry (ionic composition and strength and calcium and organic concentration). In the membrane fouling test, calcium bridges between the natural organic matter (NOM) and the membrane led to severe flux decline because of the development of densely compacted fouling layer on the membrane surface. The photocatalytic coagulation was applied to remove humic acids prior to membrane filtration. In the photocatalytic coagulation, the UV absorbance, chemical oxygen demand (COD), and cations decreased by 99%, 90%, and 10%, respectively, while anions and conductivity increased to 39% and 79%. The results emphasized that the photocatalytic coagulation could be an effective alternative solution for the elimination of the humic acids and for the prevention of the membrane fouling.

AB - In this research, the results of the photocatalytic coagulation of humic acids (HAs) in aqueous solution were investigated, and the effect of the photocatalytic coagulation on the fouling of nanofiltration (NF) membrane was investigated. Nanoparticles of copper-doped titania were synthesized by a sol-gel method using titanium isopropoxide and cuperous chloride. The behavior of a thin-film composite NF membrane was investigated as a function of solution chemistry (ionic composition and strength and calcium and organic concentration). In the membrane fouling test, calcium bridges between the natural organic matter (NOM) and the membrane led to severe flux decline because of the development of densely compacted fouling layer on the membrane surface. The photocatalytic coagulation was applied to remove humic acids prior to membrane filtration. In the photocatalytic coagulation, the UV absorbance, chemical oxygen demand (COD), and cations decreased by 99%, 90%, and 10%, respectively, while anions and conductivity increased to 39% and 79%. The results emphasized that the photocatalytic coagulation could be an effective alternative solution for the elimination of the humic acids and for the prevention of the membrane fouling.

UR - http://www.scopus.com/inward/record.url?scp=34247509699&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34247509699&partnerID=8YFLogxK

U2 - 10.1021/ie060917s

DO - 10.1021/ie060917s

M3 - Article

AN - SCOPUS:34247509699

VL - 46

SP - 2280

EP - 2285

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

SN - 0888-5885

IS - 8

ER -