Adsorption of crude oil from aqueous solution: A review. (December 2022)

• Record Type: Journal Article
• Authors: Emenike, Ebuka Chizitere; Adeleke, Joy; Iwuozor, Kingsley O.; Ogunniyi, Samuel; Adeyanju, Comfort A.; Amusa, Victor Temitope; Okoro, Hussein Kehinde; Adeniyi, Adewale George
• Is Part Of: Journal of water process engineering. Volume 50(2022)
• Publication Date: 2022-12
• Subjects: AC activated carbon -- NP nanoparticle -- MWCNT multi-wall carbon nanotube -- PUF polyeurethane form -- PFO pseudo-first order -- PSO pseudo-second order -- RE removal efficiency -- qmax maximum capacity; Crude oil -- Adsorption -- Environment -- Biosorbent -- Nanoparticle; Water-supply engineering -- Periodicals; Saline water conversion -- Periodicals; Seawater -- Distillation -- Periodicals; Sanitary engineering -- Periodicals; Sewage -- Purification -- Periodicals; 627
• DOI: 10.1016/j.jwpe.2022.103330
• Languages: English
• ISSNs: 2214-7144

Abstract

Abstract: Crude oil provides a significant contribution to a country's economy, resulting in a diverse range of petroleum products that can be used to create significant income. However, the major disadvantage of using crude oil is that it depletes world water resources. This has led to a large amount of literature being churned out every year on ways of mitigating crude oil spills, particularly by adsorption. In this study, the different types of adsorbents that have been employed in the sorption of crude oil in recent times were reviewed in order to identify the best class of adsorbents needed for successful clean-up and draw conclusions from the findings. The adsorbents were grouped into seven different classes, namely: biosorbents, activated carbons, biochars, polymers and resins, clays and minerals, nanoparticles, and composites. Biosorbents were found to be the most commonly used (43.8 %) due to their abundance and ease of preparation, while activated carbon and clays and minerals (4.2 % each) were the least frequently used. The majority of adsorbents had excellent adsorption capacity and removal efficiency (>85 %). The adsorption process for all the adsorbents mainly followed the Langmuir isotherm model and correlated well with the pseudo-second order kinetic model. Sorption occurs primarily through intra-particle diffusion, film diffusion, and ion exchange. Other adsorption processes, such as the effects of operating parameters, thermodynamic studies, and adsorbent regeneration and reuse, were also discussed and recommendations outlined for futuristic studies. Graphical abstract: Unlabelled Image Highlights: The adsorbents were grouped into seven different classes. Biosorbents were the best class of the adsorbents and the most commonly used. The Langmuir isotherm and PSO kinetic provided the best fit models. Sorption occurs mainly via intra-particle diffusion, film diffusion, and ion exchange. The directions for future investigation were proposed.