Oil–Water Emulsion Separation and Cleaning Performance Study by Cross-Flow Membrane Filtration
Publication: Journal of Hazardous, Toxic, and Radioactive Waste
Volume 26, Issue 3
Abstract
Oil–water emulsion discharge or reuse is a major problem for the environment and ecological systems. This discharge cannot mix with fresh water, owing to the high oil content, total dissolved solids, and chemical oxygen demand (COD). Membrane separation is a unique process to reprocess oily wastewater. The membrane has additional advantages compared with other commercial processes, such as adsorption, distillation, and centrifugation, for example, less energy requirement, no addition of chemicals, and a reduction of the COD to within permissible limits. Transient flux decline and foulant deposition during the operating time are the main drawbacks of the membrane separation process. Transient flux decline could be minimized by using a cross-flow setup. In a cross-flow filtration unit, the cell consists of a flat sheet comprising a polyamide membrane with pore diameters under the microfiltration range. During experiments, the membrane was first fouled, and the fouled membrane was cleaned using a cleaning agent. The membrane fouling experiment was conducted at a 138-kPa transmembrane pressure (TMP) difference in the laminar flow zone. The membrane cleaning operation was essential to recover the initial hydraulic membrane permeability. Deionized water, the anionic surfactant [i.e., sodium dodecyl sulfate (SDS)], and the chelating agent [i.e., ethylenediaminetetraacetic acid (EDTA)], were used to recover the original flux value. A thorough study was conducted into how the membrane performance was improved with variation of chemical agent doses.
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References
Abdulredha, M. M., H. S. Aslina, and C. A. Luqman. 2020. “Overview on petroleum emulsions, formation, influence and demulsification treatment techniques.” Arabian J. Chem. 13 (1): 3403–3428. https://doi.org/10.1016/j.arabjc.2018.11.014.
Alpatova, A., A. Qamar, M. Al-Ghamdi, J. G. Lee, and N. Ghaffour. 2020. “Effective membrane backwash with carbon dioxide under severe fouling and operation conditions.” J. Membr. Sci. 611: 118290. https://doi.org/10.1016/j.memsci.2020.118290.
Briscoe, B. J., P. F. Luckham, J. N. Jayarajah, and T. Akeju. 2000. “Separation of emulsions using fibrous fabric.” Colloids Surf., A 163 (2–3): 151–164. https://doi.org/10.1016/S0927-7757(99)00309-X.
Ezzati, A., E. Gorouhi, and T. Mohammadi. 2005. “Separation of water in oil emulsions using microfiltration.” Desalination 185 (1–3): 371–382. https://doi.org/10.1016/j.desal.2005.03.086.
Masoudnia, K., A. Raisi, A. Aroujalian, and M. Fathizadeh. 2013. “Treatment of oily wastewaters using the microfiltration process: Effect of operating parameters and membrane fouling study.” Sep. Sci. Technol. 48 (10): 1544–1555. https://doi.org/10.1080/01496395.2012.745155.
Matsumoto, Y., T. Kawakatsu, M. Nakajima, and Y. Kikuchi. 1999. “Visualization of filtration phenomena of a suspended solution including O/W emulsion or solid particle and membrane separation properties of the solution.” Water Res. 33 (4): 929–936. https://doi.org/10.1016/S0043-1354(98)00303-0.
Pichtel, J. 2016. “Oil and gas production waste water: Soil contamination and pollution prevention.” Appl. Environ. Soil Sci. 2016: 2707989.
Porter, M. C. 1989. Handbook of industrial membrane technology. Washington, DC: DOE.
Singh, V., and C. Das. 2014. “Comparison of spiral wound UF membrane performance between turbulent and laminar flow regimes.” Desalination 337: 43–51. https://doi.org/10.1016/j.desal.2014.01.012.
Singh, V., M. K. Purkait, and C. Das. 2011. “Cross-flow microfiltration of industrial oily wastewater: Experimental and theoretical consideration.” Sep. Sci. Technol. 46 (8): 1213–1223. https://doi.org/10.1080/01496395.2011.560917.
Trussell, R. S., S. Adham, and R. R. Trussell. 2005. “Process limits of municipal wastewater treatment with the submerged membrane bioreactor.” J. Environ. Eng. 131 (3): 410–416. https://doi.org/10.1061/(ASCE)0733-9372(2005)131:3(410).
Zhang, Z., Y. Liu, B. Zhao, J. Li, L. Wang, and C. Ma. 2020. “Reduction of long-term irreversible membrane fouling: A comparison of integrated and separated processes of MIEX and UF.” J. Membr. Sci. 616: 118567. https://doi.org/10.1016/j.memsci.2020.118567.
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© 2022 American Society of Civil Engineers.
History
Received: Sep 1, 2021
Accepted: Dec 17, 2021
Published online: Apr 15, 2022
Published in print: Jul 1, 2022
Discussion open until: Sep 15, 2022
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