Imanian Senobar, Sahlabadi Fatemeh, Shahryari Taher
Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran.
Department of Environmental Health Engineering, School of Health, Social Determinants of Health Research Center, Birjand University of Medical Sciences, Birjand, Iran.
Sci Rep. 2024 Aug 5;14(1):18072. doi: 10.1038/s41598-024-68658-3.
TetrabromobisphenolA is a well-known member of the brominated flame retardant group and is widely used as a highly effective fire-retardant additive in electronic and electrical equipment. TBBPA is commonly found in various environmental sources and can be harmful to human health. This study presents a simple approach to preparing a magnetic nanocomposite, offering a straightforward method that results in consistent quality and low resource consumption. The nanocomposite has a high surface-to-volume ratio for the removal of tetrabromobisphenolA. Various characterization techniques, including XRD, FTIR, EDX, FESEM, VSM, TEM, and BET analyses were used to characterize the Fe-S nanoparticles and Fe-S/CuS. The results showed that Fe-S/CuS nanocomposite successfully removed over 97% of the initial TBBPA (15 mg L) under optimized conditions determined by RSM, such as a contact time of 15 min, pH of 7, Fe-S/CuS nanocomposite dosage of 0.69 g L, and salt concentration of 0.10%. The RSM analysis provided a second-order polynomial model with a confidence level of 93% (F = 29.58; p < 0.0001) to predict the TBBPA removal efficiency at various concentrations. In the adsorption kinetic studies, the second-order kinetic model provided the best fit for the experimental data. Additionally, Fe-S/CuS nanocomposite shows great potential for practical applications and environmental remediation efforts, making it a valuable asset for real-sample use in environmental settings.
四溴双酚A是溴化阻燃剂组中一种知名的物质，被广泛用作电子和电气设备中一种高效的阻燃添加剂。四溴双酚A常见于各种环境来源中，可能对人体健康有害。本研究提出了一种制备磁性纳米复合材料的简单方法，提供了一种质量稳定且资源消耗低的直接方法。该纳米复合材料具有高的比表面积，用于去除四溴双酚A。采用多种表征技术，包括XRD、FTIR、EDX、FESEM、VSM、TEM和BET分析，对Fe-S纳米颗粒和Fe-S/CuS进行表征。结果表明，在响应面法确定的优化条件下，如接触时间15分钟、pH值7、Fe-S/CuS纳米复合材料用量0.69 g/L和盐浓度0.10%，Fe-S/CuS纳米复合材料成功去除了超过97%的初始四溴双酚A（15 mg/L）。响应面法分析提供了一个置信水平为93%（F = 29.58；p < 0.0001）的二阶多项式模型，以预测不同浓度下四溴双酚A的去除效率。在吸附动力学研究中，二阶动力学模型最符合实验数据。此外，Fe-S/CuS纳米复合材料在实际应用和环境修复方面显示出巨大潜力，使其成为环境中实际样品使用的宝贵资产。
