Biofouling and scaling control of reverse osmosis membrane using one-step cleaning-potential of acidified nitrite solution as an agent

Filloux, Emmanuelle, Wang, Jingshi, Pidou, Marc, Gernjak, Wolfgang and Yuan, Zhiguo (2015) Biofouling and scaling control of reverse osmosis membrane using one-step cleaning-potential of acidified nitrite solution as an agent. Journal of Membrane Science, 495 276-283. doi:10.1016/j.memsci.2015.08.034


Author Filloux, Emmanuelle
Wang, Jingshi
Pidou, Marc
Gernjak, Wolfgang
Yuan, Zhiguo
Title Biofouling and scaling control of reverse osmosis membrane using one-step cleaning-potential of acidified nitrite solution as an agent
Journal name Journal of Membrane Science   Check publisher's open access policy
ISSN 0376-7388
1873-3123
Publication date 2015-12
Sub-type Article (original research)
DOI 10.1016/j.memsci.2015.08.034
Open Access Status Not Open Access
Volume 495
Start page 276
End page 283
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract Biofouling is generally regarded as a major issue in reverse osmosis (RO) membrane filtration. Two-step chemical cleanings with alkaline and acidic agents are typically applied to restore the treatment capacity. In this study, the feasibility of one-step cleaning using free nitrous acid (FNA) was investigated as a novel low cost cleaning agent. The FNA cleaning solution was prepared by acidification of a sodium nitrite solution with hydrochloric acid. Seven fouled RO membranes collected from full-scale wastewater recycling and desalination plants were used to perform lab-scale cleaning trials. Membrane fouling characterisation revealed six of out of seven membranes were mainly bio-fouled, while one membrane was severely fouled by calcium carbonate. This study showed the feasibility of using FNA at pH 3.0 for biomass removal as well as for calcium carbonate scaling removal. The results from the lab-scale cleaning tests suggested that FNA can be used as a single cleaning agent for both biofouling and scaling removal. Cost analysis showed that FNA is a cost-effective solution for biofouling and scaling removal in RO filtration applications.
Keyword Biofouling
Free nitrous acid
Membrane cleaning
Reverse osmosis
Free Nitrous-Acid
Pseudomonas-Aeruginosa
Biofilm
Systems
Hypochlorite
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
Advanced Water Management Centre Publications
 
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