Abstract
As discharging oily wastewater from industries to the environment is a potential threat for the aquatic ecosystem, in this research, oil removal from a real case of Kermanshah polymer production plant wastewater was investigated. The focus of this study was on improving the oil rejection performance of polyethersulfone (PES) ultrafiltration membrane due to adding cellulose nanocrystals (CNC) and modified CNC with serine amino acid (CNC-Ser) in PES mix matrix. From the results, the membranes embedded with CNC-Ser showed better performance in terms of water flux, flux recovery ratio, and oil rejection (higher than 97%) compared to the modified membranes with CNC. The lowest water contact angle (41.37°), smoother surface, and higher negative surface potential (- 24mV) were achieved for the optimum loading of CNC-Ser. Besides, long-term performance of the membranes with optimum loading of CNC and CNC-Ser were compared in both dead-end and cross-flow setups.
Highlights
With developing industrialization, the treatment of industrial wastewater has become a main concern in all over the world (Guan, Li, Zhu, & Xia, 2021)
The focus of this study was on improving the oil rejection performance of polyethersulfone (PES) ultrafiltration membrane due to adding cellulose nanocrystals (CNC) and modified CNC with Serine amino acid (CNC-Ser) in PES mix matrix
The membranes embedded with CNC-Ser showed better performance in terms of water flux, flux recovery ratio and oil rejection compared to the modified membranes with CNC
Summary
The treatment of industrial wastewater has become a main concern in all over the world (Guan, Li, Zhu, & Xia, 2021). The treatment and disposal of oily wastewaters is a major challenge for some industries like petrochemical, food, and pharmaceutical. Petrochemical industry inevitably generates large volumes of oily wastewater over the chemical process for instance the production of high density polyethylene as a byproduct (Huang, Ras, & Tian, 2018; Li, Gao, Wang, Chen, & Yu, 2021). Petrochemical industry must separate oil from wastewater before releasing wastewater to environment. These days’ seawater is being polluted by oil leakage and discharging effluents (Elshorafa, Saththasivam, Liu, & Ahzi, 2020). It has been proved that the mentioned methods are not qualified enough as a result of their disadvantaged like being costly, inefficient in low oil concentration (≤ 100 ppm) and generate second pollutions in some cases (Pauzan, Abd Rahman, & Othman, 2021; Xinya Wang et al, 2020; Yan et al, 2019)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Environmental science and pollution research international
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
