Publicado 12 números por año
ISSN Imprimir: 1091-028X
ISSN En Línea: 1934-0508
Indexed in
FOULING AND WETTING STUDIES RELATING TO THE VACUUM MEMBRANE DISTILLATION PROCESS FOR BRACKISH AND GREY WATER TREATMENT
SINOPSIS
Membrane distillation (MD) has two major problems: wetting and fouling. MD is rarely employed in wastewater reclamation since the active surfactant in the detergents contained in such water promotes feed water penetration through the membrane. Another difficulty is that the membrane lifetime and the performance of the MD process are both influenced by fouling. The main aim of this paper is to determine the effectiveness of the linear alkylbenzene sulfonate (LAS) concentration in the reduction of contact angle and the prediction of the flux decline with variation of the influent salt concentration. Contact angle was measured for different concentrations of LAS solution as well as different samples of brackish and grey water. The tests were performed with three different types of hydrophobic membranes. A simple empirical model was proposed, and related coefficients were calibrated based on experimental data for contact angles measured for different solutions with the hydrophobic membrane. Flux decline trends during pore wetting was investigated by monitoring the permeate quality through the treatment of synthetic grey water. The effect of membrane fouling during vacuum membrane distillation (VMD) was also studied under different operating conditions. A variety of temperature and pressure combinations as well as several salinity concentrations has been examined. The mathematical based model developed for the permeate flux was used to predict the flux rate of different salinity solutions. It was found that the flux decline could be attributed to the mass transfer resistance of the salt crystals.
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Ramezanianpour Mohammad, Sivakumar Muttucumaru, Osborn Natalie, Zhang Ying, Kawa Hakim, A contact angle study of different greywater sources with hydrophobic membranes, Water Quality Research Journal, 55, 3, 2020. Crossref
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Yu Guo, Fang Yizhu, Li Haitao, Wang Chenyu, Zhang Dongming, Establishment and application of prediction model of natural gas reserve and production in Sichuan Basin, Journal of Petroleum Exploration and Production Technology, 11, 6, 2021. Crossref
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Li Haitao, Yu Guo, Fang Yizhu, Chen Yanru, Wang Chenyu, Zhang Dongming, Studies on natural gas reserves multi-cycle growth law in Sichuan Basin based on multi-peak identification and peak parameter prediction, Journal of Petroleum Exploration and Production Technology, 11, 8, 2021. Crossref