BROWSE

Related Researcher

Author's Photo

Cho, Jaeweon
OWIELAB(Organic-Water Interface Engineering Laboratory)
Research Interests
  • Convergence of Science and Arts, Feces Standard Money (FSM), Water & Energy

ITEM VIEW & DOWNLOAD

Foulants analyses for NF membranes with different feed waters: coagulation/sedimentation and sand filtration treated waters

Cited 9 times inthomson ciCited 13 times inthomson ci
Title
Foulants analyses for NF membranes with different feed waters: coagulation/sedimentation and sand filtration treated waters
Author
Park, NoeonLee, SungyunYoon, Sung RoKim, Young HoonCho, Jaeweon
Keywords
Coagulation/sedimentation; Nanofiltration; Natural organic matter (NOM); Organic/inorganic foulants; Sand filtration
Issue Date
2007-01
Publisher
ELSEVIER SCIENCE BV
Citation
DESALINATION, v.202, no.1-3, pp.231 - 238
Abstract
Two different NF membranes were operated to remove natural organic matter (NOM) originating from Dongbok Lake in Korea. Coagulation/sedimentation and sand filtration treated waters as membrane feed waters were used. The tested NF membranes were autopsied to compare the fouling propensity from different feed waters using pure water and a NaOH solution. Organic/inorganic foulants onto membrane surface were analyzed in terms of molecular weight (MW) distribution, structure, and IR analysis, and fouled membranes were also characterized in terms of pore size distribution, surface charge, and SEM-EDS analysis. Polysaccharides and/or N-acetyl aminosugar groups with MW ranging from 30,000 to 50,000 g/mol were identified using HP-SEC and IR analysis. Inorganic foulants (i.e., Si and Al) were also fouled onto the membrane surface and/or pores, and it is effectively removed by caustic cleaning, not pure water. Caustic cleaning was proven to be effective to remove both fouled NF membranes as a basis of flux recovery, and it could efficiently desorb the hydrophobic NOM constituents or protein-like substances from the relatively hydrophilic and less negatively charged NF membranes
URI
Go to Link
DOI
10.1016/j.desal.2005.12.060
ISSN
0011-9164
Appears in Collections:
UEE_Journal Papers
Files in This Item:
1-s2.0-S0011916406012161-main.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU