Journals Information
Environment and Ecology Research Vol. 11(3), pp. 513 - 526
DOI: 10.13189/eer.2023.110311
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Adsorption Kinetic and Isotherm of the Oil Spill onto Adsorbents Based on Polyurethane Foam Grafted Chitin and Its Modifications
Tran Y Doan Trang 1,*, L. A. Zenitova 2, Pham Huong Quynh 1, Ta Thi Huong 1, Lai Hong Dung 3
1 HaUI Institute of Technology, Hanoi University of Industry, Vietnam
2 Department of Synthetic Rubber Technology, Polymer Institute, Kazan National Research Technological University, Russia
3 Department of Industrial Biotechnology, Institute of Food Production and Biotechnology, Kazan National Research Technological University, Russia
ABSTRACT
This study focuses on oil spill adsorption by adsorbents based on polyurethane foam (PUF) grafted with chitin (PUFC) and its hydrophobic derivatives. The mechanism of hydrophobic modification has been shown when using waste silicone (WS) and stearic acid (AS) as hydrophobic agents on the foam surface. Some characteristics such as the oil and water uptake in only oil or water systems, the buoyancy, recovery of adsorbed oil, reusability, and the oil retention of three adsorbents are evaluated to suggest their suitable application in oil spill cleanup. To analyze isotherm oil adsorption on studied adsorbents, isothermal models, including Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich, are researched. It is established that the oil adsorption of the adsorbent PUFC and the hydrophobic adsorbent with waste silicone (PUFC-WS) is more suitable for the Langmuir model (R2 reached 0.9756 and 0.9944, respectively), while the hydrophobic adsorbent with stearic acid (PUFC-AS) is more suitable for the Freundlich model (R2 = 0.9218). The obtained adsorption and the Gibb energy demonstrate that the oil adsorption onto three materials is a physical and endothermic process, not spontaneous. The kinetic data of oil adsorption is researched by employing the intraparticle diffusion model and the Boyd equation. Based on the model parameters, it is indicated that the oil adsorption process by researched adsorbent is a complex process, including many simultaneous adsorption mechanisms. The obtained data demonstrate that intraparticle diffusion is not the only process that occurs and controls the adsorption rate. Film diffusion is considered the primary limited step of the adsorption rate.
KEYWORDS
Adsorption Kinetic, Adsorption Isotherm, Polyurethane Foam, Chitin, Oil Spill
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Tran Y Doan Trang , L. A. Zenitova , Pham Huong Quynh , Ta Thi Huong , Lai Hong Dung , "Adsorption Kinetic and Isotherm of the Oil Spill onto Adsorbents Based on Polyurethane Foam Grafted Chitin and Its Modifications," Environment and Ecology Research, Vol. 11, No. 3, pp. 513 - 526, 2023. DOI: 10.13189/eer.2023.110311.
(b). APA Format:
Tran Y Doan Trang , L. A. Zenitova , Pham Huong Quynh , Ta Thi Huong , Lai Hong Dung (2023). Adsorption Kinetic and Isotherm of the Oil Spill onto Adsorbents Based on Polyurethane Foam Grafted Chitin and Its Modifications. Environment and Ecology Research, 11(3), 513 - 526. DOI: 10.13189/eer.2023.110311.