Jmaa Senda Ben, Kallel Amjad
Laboratory of Water, Energy and Environment, Engineering National School of Sfax (ENIS), University of Sfax, Sfax, 3038, Tunisia.
Heliyon. 2024 Mar 20;10(7):e28427. doi: 10.1016/j.heliyon.2024.e28427. eCollection 2024 Apr 15.
() fibers were used as biodegradable solid waste material in the removal of oil spills from seawater. In the present study, fibers were chemically treated using HPO, KOH, ZnCl and HO. The Fourier Transform Infrared spectroscopy and scanning electron microscopy were used to compare and to determine the structure of the raw and the chemically-treated fibers. The main parameters studied in the two systems, a mixture system of oil and water and a system with only oil or only water, were the chemical solutions concentrations, initial oil concentration and time contact. The results revealed that fibers treated with phosphoric acid (HPO) showed an enhancement of oil sorption of 12% in oil/water layer, compared to raw fibers. An increase of hydrophobicity was also observed with treated fibers as revealed by the 50% decrease in water sorption capacity. The isotherm and kinetic models were determined to reveal the nature and the mechanism of the sorption. Langmuir isotherm appeared to be the best fitting model showing a one-layer oil sorption onto fibers. In addition, the results fitted well with the pseudo-second order kinetic model compared to pseudo-first order representing the chemical sorption of oil. The results indicated that the treated biosorbent could be used as biodegradable material to clean-up oil spills in aqueous solution.
（）纤维被用作可生物降解的固体废物材料，用于去除海水中的溢油。在本研究中，使用磷酸（H₃PO₄）、氢氧化钾（KOH）、氯化锌（ZnCl₂）和过氧化氢（H₂O₂）对纤维进行化学处理。利用傅里叶变换红外光谱和扫描电子显微镜来比较和确定未处理纤维与化学处理后纤维的结构。在油 - 水混合体系以及仅含油或仅含水的体系这两个系统中研究的主要参数包括化学溶液浓度、初始油浓度和接触时间。结果表明，与未处理的纤维相比，用磷酸（H₃PO₄）处理的纤维在油/水层中的油吸附量提高了12%。处理后的纤维还表现出疏水性增加，其吸水能力下降了50%。通过确定等温线和动力学模型来揭示吸附的性质和机理。朗缪尔等温线似乎是最适合的模型，表明纤维上存在单层油吸附。此外，与代表油化学吸附的拟一级动力学模型相比，结果与拟二级动力学模型拟合得很好。结果表明，经处理的生物吸附剂可作为可生物降解材料用于清理水溶液中的溢油。
