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http://hdl.handle.net/2445/45687
Title: | Study on the removal of biodegradable NOM from seawater using biofiltration |
Author: | Simón, Francesc Xavier Rudé i Payró, Elisabet Llorens Llacuna, Joan Baig, Sylvie |
Keywords: | Aigua de mar Biodegradació Biofilms Contaminació de l'aigua Enginyeria química Seawater Biodegradation Biofilms Water pollution Chemical engineering |
Issue Date: | 2013 |
Publisher: | Elsevier B.V. |
Abstract: | Despite the low biodegradability of seawater NOM, problems associated with biofouling are common in facilities that handle seawater. In this work, a fixed-film aerobic biofilter is proposed as an effective unit for preventing biofouling in such facilities. A packed-bed biofilter with an EBCT = 6 - 11 min was employed. The results demonstrated that the DOC is reduced by 6% and the BOD7 is reduced up to 15%. The LC-OCD analysis revealed that biofiltration abates the LMW neutrals and biopolymer fractions by 33 and 17%, respectively. However, the fractionation with UF membrane showed that the biofiltration process is able to degrade the more biodegradable compounds that have molecular weights that are greater than 1 kDa and compounds with molecular weights of less than 1 kDa. After biofiltration, the biological activity measured in terms of ATP removal was reduced by 60%. Finally, a test to evaluate the biofilm formation capacity of a water sample revealed reductions of ~94% when comparing biofiltered and non-biofiltered seawater. Therefore, a fixed-film aerobic biofiltration process could be a useful treatment for the removal of biodegradable organic matter from seawater and for improving the water quality in terms of less biofilm formation capacity. |
Note: | Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.desal.2013.01.023 |
It is part of: | Desalination, 2013, vol. 316, p. 8-16 |
URI: | http://hdl.handle.net/2445/45687 |
Related resource: | http://dx.doi.org/10.1016/j.desal.2013.01.023 |
ISSN: | 0011-9164 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Química i Química Analítica) |
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