Mitigation of organic fouling on ceramic membranes by selective removal of microbial-oriented organic matters in wastewater effluents

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The fouling propensity of organic matter categorized by their origins has been investigated during the reuse of tertiary wastewater effluent by a ceramic ultrafiltration membrane with molecular weight cut-off (MWCO) around 1 kDa. Selective removal of organic matter was carried out with three carbon-based adsorbents including granular activated carbon (GAC), expanded graphite (EG), and multi-walled carbon nanotubes (MWNTs). Analysis on the residual organic matter after the adsorption revealed that EG and MWNTs mainly adsorbed microbial-oriented organic matters (MOOMs) such as the soluble microbial products (SMP)-like and aromatic protein (AP)-like organic compounds, while GAC showed non-selective organic removals. At the identical organic loading, feed solution treated by EG and MWNTs exhibited significantly lower fouling propensity than that of the GAC-treated sample. Consequently, the selective removal of MOOMs from tertiary effluents can provide an effective strategy to reduce organic fouling on ceramic membranes.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2019-07
Language
English
Article Type
Article
Citation

SEPARATION AND PURIFICATION TECHNOLOGY, v.219, no.15, pp.216 - 221

ISSN
1383-5866
DOI
10.1016/j.seppur.2019.03.032
URI
http://hdl.handle.net/10203/261814
Appears in Collection
CE-Journal Papers(저널논문)
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