Sustainable photocatalytic-membrane reactors for petroleum refinery wastewater remediation as a hybrid system

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2026-04-08 Epub Date: 2026-03-11 DOI:10.1002/jctb.70155

Eman H Khader, Talib M Albayati, Thamer J Mohammed, Mustapha Abbas Al-Behadili, Noori M Cata Saady, Sohrab Zendehboudi

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引用次数: 0

Abstract

BACKGROUND

Petroleum refinery wastewater (PRW) contains high concentrations of oil and organic pollutants, requiring efficient and sustainable treatment technologies. Hybrid photocatalytic membrane reactors (PMRs) have attracted increased attention due to their ability to combine advanced oxidation with membrane separation. This study develops a PMR incorporating a green calcium oxide (CaO) photocatalyst synthesized from tomato plant waste and a polyacrylonitrile (PAN) membrane for PRW treatment.

RESULTS

The PAN membrane was fabricated using the phase inversion technique and integrated with the green CaO photocatalyst under light-emitting diode (LED) irradiation at a transmembrane pressure of 1 bar. The effects of CaO dosage (0–0.1 g/ L⁻¹), reaction time (15–180 min), and initial oil concentration (10–1000 ppm) on oil and chemical oxygen demand (COD) removal were systematically evaluated. The PMR achieved a stable permeate flux of 69.19 L m⁻² h⁻¹ during PRW treatment. Complete oil removal (100%) and COD removal of 99.89% were obtained at initial concentrations of 1000 ppm oil and 2829 ppm COD, respectively, while removal efficiencies of 97.00% (oil) and 94.00% (COD) were obtained at lower pollutant loadings. The PAN membrane exhibited excellent antifouling and self-cleaning behavior, with a flux recovery ratio of 96.60% at 100 ppm oil concentration.

CONCLUSION

The developed photocatalytic membrane reactor (PMR) demonstrated high treatment efficiency and operational stability for petroleum refinery wastewater (PRW). The synergistic interaction between the green CaO photocatalyst and polyacrylonitrile (PAN) membrane enhanced organic degradation and mitigated membrane fouling, producing effluents that comply with World Health Organization (WHO) discharge limits. The proposed system represents a promising, sustainable approach for advanced industrial wastewater treatment within chemical and biochemical engineering applications. © 2026 Society of Chemical Industry (SCI).

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可持续光催化膜反应器作为混合系统用于炼油废水的修复

石油炼制废水中含有高浓度的油类和有机污染物，需要高效、可持续的处理技术。混合光催化膜反应器（PMRs）由于其结合了高级氧化和膜分离的能力而受到越来越多的关注。本研究开发了一种由番茄植物废料合成的绿色氧化钙（CaO）光催化剂和聚丙烯腈（PAN）膜用于PRW处理的PMR。结果在1 bar的跨膜压力下，在发光二极管（LED）的照射下，采用相变技术制备了PAN膜，并与绿色CaO光催化剂结合。系统评价了CaO投加量（0-0.1 g/ L−1）、反应时间（15-180 min）和初始油浓度（10-1000 ppm）对除油和化学需氧量（COD）的影响。在PRW处理期间，PMR的渗透通量稳定在69.19 L m−2 h−1。在初始浓度为1000 ppm和2829 ppm时，去除率分别为100%和99.89%，而在较低污染物负荷下，去除率分别为97.00%和94.00%。在100 ppm油浓度下，PAN膜具有良好的防污自清洁性能，通量回收率为96.60%。结论所研制的光催化膜反应器（PMR）对炼油废水具有较高的处理效率和运行稳定性。绿色CaO光催化剂与聚丙烯腈（PAN）膜之间的协同作用增强了有机降解，减轻了膜污染，产生的废水符合世界卫生组织（WHO）的排放限值。提出的系统代表了一个有前途的，可持续的方法，先进的工业废水处理在化学和生物化学工程的应用。©2026化学工业学会（SCI）。

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来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

CiteScore

7.00

自引率

5.90%

发文量

268

审稿时长

1.7 months

期刊介绍： Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.