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Oil and gas exploration and production generated billions of barrels of oilfield-produced water (OPW) annually, making it the most abundant by-product. Therefore, efficient and effective separation of OPW has become a significant challenge, as the discharge and disposal of OPW into the environment must meet the environmental regulatory standards. Membrane separation technology has reliably separated OPW. However, serious membrane fouling requires immediate technological improvement. To address this concern, this study aims to synthesize a novel membrane material to perform efficient OPW membrane separation performances. GO-PES hollow fibre membranes were fabricated and coated with upcycled alginate (UA) from dental waste through mussel-inspired dopamine (DOPA) coating. The fabricated membranes obtained a decent morphological structure and uniform UA coating on GO-PES hollow fibre membranes. Good physicochemical and thermal properties, and higher water affinity of UA enhanced the membrane hydrophilicity. The pure water flux of the fabricated membranes reduced from 178.7 L/m2/h to 10.1 L/m2/h upon increasing loading of UA up to 10 wt% due to the increase of membrane resistance. Similarly, the OPW permeate flux is also reduced upon increased UA loadings. The highest OPW permeate flux was obtained by GO-PES membrane with 0.5 wt% loading of UA (13.0 L/m2/h). However, although the increase of UA loading has decreased the permeate flux, oil rejection increased with higher loading of UA up to 98.2%, confirming a good attachment of UA coating on the membrane using DOPA. Finally, this study suggests UA-coated GO/PES membranes as a promising candidate for treating OPW, particularly for petroleum production facilities.

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Treatment of Oilfield-Produced Water Using Mussel-Inspired Upcycled Alginate-Coated Graphene Oxide-Polyethersulfone Membranes

  • 会议论文

  • 发表日期：

    2026年

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  • Nur Hashimah Alias,
  • Muhammad Noorul Anam Mohd Norddin,
  • Nur Hidayati Othman,
  • Muhammad Shafiq Mat Shayuti,
  • Fauziah Marpani,
  • Nur Balqish Mohd Yasin

摘要

Oil and gas exploration and production generated billions of barrels of oilfield-produced water (OPW) annually, making it the most abundant by-product. Therefore, efficient and effective separation of OPW has become a significant challenge, as the discharge and disposal of OPW into the environment must meet the environmental regulatory standards. Membrane separation technology has reliably separated OPW. However, serious membrane fouling requires immediate technological improvement. To address this concern, this study aims to synthesize a novel membrane material to perform efficient OPW membrane separation performances. GO-PES hollow fibre membranes were fabricated and coated with upcycled alginate (UA) from dental waste through mussel-inspired dopamine (DOPA) coating. The fabricated membranes obtained a decent morphological structure and uniform UA coating on GO-PES hollow fibre membranes. Good physicochemical and thermal properties, and higher water affinity of UA enhanced the membrane hydrophilicity. The pure water flux of the fabricated membranes reduced from 178.7 L/m2/h to 10.1 L/m2/h upon increasing loading of UA up to 10 wt% due to the increase of membrane resistance. Similarly, the OPW permeate flux is also reduced upon increased UA loadings. The highest OPW permeate flux was obtained by GO-PES membrane with 0.5 wt% loading of UA (13.0 L/m2/h). However, although the increase of UA loading has decreased the permeate flux, oil rejection increased with higher loading of UA up to 98.2%, confirming a good attachment of UA coating on the membrane using DOPA. Finally, this study suggests UA-coated GO/PES membranes as a promising candidate for treating OPW, particularly for petroleum production facilities.