Din Salah Ud, Ngueagn Patrick T, Al-Ahmary Khairia Mohammed, AlMohamadi Hamad, Al-Mhyawi Saedah R, Elamin Nuha Y, Alshdoukhi Ibtehaj F, Alrashood Jawaher Saud, Ofudje Edwin A
Department of Chemistry, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan.
Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé, 812, Yaoundé, Cameroon.
Sci Rep. 2025 Aug 27;15(1):31659. doi: 10.1038/s41598-025-17557-2.
The continuous release of chemical substances like endocrine disruptor bisphenol-A (BPA) can cause harmful health and environmental effects in humans, wildlife and aquatic organisms. This study demonstrates the use of raw and biochar (treated) banana peel adsorbents for the elimination of bisphenol-A in a batch process. The sorption data revealed that optimum adsorption was attained at a pH of 8.0, initial BPA concentration of 240 mg/L, dosage of 0.4 g, and contact time of 200 min and 150 min for raw and treated sample, respectively. From the kinetic study, the pseudo-second-order model (PSOM) best describes treated peels data, indicating chemisorption mechanism, while pseudo-first-order model (PFOM) best explained the kinetic data for the raw sample pointing to physisorption mechanism. The Langmuir model best described the raw banana peel with maximum monolayer adsorption capacities (Q) of 91.3 mg/g and 135.2 mg/g for the raw and treated sample, while Freundlich model confirmed the adsorption of the BPA by the treated sample to be heterogeneity surface. The thermodynamic characteristics indicate that for the raw banana peel, showed the values of ΔH obtained is 17.42 kJ/mol, while for the treated peel, the value is much higher at 45.01 kJ/mol indicating spontaneous and endothermic process for both adsorbents. These findings highlight the potential of banana peels and its biochar derivative as a sustainable and effective adsorbent in the removal of BPA from wastewater.
内分泌干扰物双酚A（BPA）等化学物质的持续释放会对人类、野生动物和水生生物的健康及环境造成有害影响。本研究展示了使用未处理和生物炭处理的香蕉皮吸附剂，以分批处理的方式去除双酚A。吸附数据表明，未处理和处理后的样品分别在pH值为8.0、初始双酚A浓度为240 mg/L、剂量为0.4 g、接触时间为200分钟和150分钟时达到最佳吸附效果。动力学研究表明，准二级模型（PSOM）最能描述处理后香蕉皮的数据，表明其吸附机制为化学吸附，而准一级模型（PFOM）最能解释未处理样品的动力学数据，表明其吸附机制为物理吸附。朗缪尔模型最能描述未处理的香蕉皮，未处理和处理后的样品的最大单层吸附容量（Q）分别为91.3 mg/g和135.2 mg/g，而弗伦德里希模型证实处理后的样品对双酚A的吸附为非均相表面吸附。热力学特性表明，未处理的香蕉皮的ΔH值为17.42 kJ/mol，而处理后的香蕉皮的该值更高，为45.01 kJ/mol，表明两种吸附剂的吸附过程均为自发吸热过程。这些发现凸显了香蕉皮及其生物炭衍生物作为一种可持续且有效的吸附剂，用于从废水中去除双酚A的潜力。
