Journal
MEMBRANES
Volume 12, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/membranes12010026
Keywords
fouling; membrane; oily; wastewater; mitigation; treatment
Categories
Funding
- Fundametal Research Grant Scheme (FRGS) [600-IRMI/FRGS 5/3 (441/2019)]
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The discharge of large amounts of oily wastewater has raised concerns in the scientific community. Membrane filtration is a commonly used method for treating oily wastewater due to its stability, convenience handling, and durability. However, membrane fouling, which affects the performance efficiency of the membrane, continues to be a challenge. This review focuses on the strategies to reduce membrane fouling from oily wastewater and provides insights into different fouling mechanisms and mitigation strategies.
The discharge of massive amounts of oily wastewater has become one of the major concerns among the scientific community. Membrane filtration has been one of the most used methods of treating oily wastewater due to its stability, convenience handling, and durability. However, the continuous occurrence of membrane fouling aggravates the membrane's performance efficiency. Membrane fouling can be defined as the accumulation of various materials in the pores or surface of the membrane that affect the permeate's quantity and quality. Many aspects of fouling have been reviewed, but recent methods for fouling reduction in oily wastewater have not been explored and discussed sufficiently. This review highlights the mitigation strategies to reduce membrane fouling from oily wastewater. We first review the membrane technology principle for oily wastewater treatment, followed by a discussion on different fouling mechanisms of inorganic fouling, organic fouling, biological fouling, and colloidal fouling for better understanding and prevention of membrane fouling. Recent mitigation strategies to reduce fouling caused by oily wastewater treatment are also discussed.
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