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Desalination and Water Treatment Volume 43, 2012 - Issue 1-3
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Articles

Fluorescence spectrum-based biofouling prediction method for RO membrane systems

Sun-Nyoung Hwang Department of Medical System Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-172, Republic of Korea Phone: Tel. +82 62 715 2229 Fax: Tel. +82 62 715 2229
,
Wooyeol Choi School of Information and Communications, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-172, Republic of Korea
,
Hyuk Lim Department of Medical System Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-172, Republic of Korea Phone: Tel. +82 62 715 2229 Fax: Tel. +82 62 715 2229; School of Information and Communications, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-172, Republic of Korea; Department of Nanobio Materials and Electronics, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-172, Republic of KoreaCorrespondence[email protected]
,
Jinhee Choi School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-172, Republic of Korea
,
Hyunjung Kim School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-172, Republic of Korea
&
In Seop Chang School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-172, Republic of Korea
Pages 238-245 | Received 25 Dec 2011, Accepted 10 Feb 2012, Published online: 30 Apr 2012
 
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Abstract

Monitoring reverse osmosis (RO) membrane conditions is an important task because it helps reduce the operation and maintenance cost in the RO membrane desalination systems by achieving long membrane lifetime and energy saving. As biological interactions between the membrane itself and microorganism cause the rapid degradation of membrane performance, it is crucial to identify and quantify potential biofoulants that are sensitive to each specific RO membrane. This study proposed a biofouling prediction method that indirectly quantifies the degree of biofouling by comparing the fluorescence excitation-emission matrix (EEM) of foulants sampled on the fully fouled RO membrane and those of brine samples from currently operating RO system. The experiment showed that the similarity distance measured from the comparison between the two fluorescence EEMs tends to increase when brine samples were secured from relatively clean RO membranes.

Acknowledgments

This research was supported by a grant (07SeaHeroB01-03) from Plant Technology Advancement Program funded by the Ministry of Construction & Transportation of Korea and by a grant (R31-10026) from the World Class University program provided by the MEST of Korea.

Notes

The 4th International Desalination Workshop (IDW4), 16–18 November 2011, Jeju Island, South Korea

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