Department ofChemical Engineering, Sathyabama Institute of Science and Technology, Rajiv Gandhi Salai, Chennai, India.
Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, India.
Int J Phytoremediation. 2022;24(3):224-234. doi: 10.1080/15226514.2021.1932730. Epub 2021 Jun 14.
Antibiotics in water bodies are emerging as an alarming new pollutant because of its persistent and recombinant nature. In recent period of human lifestyle, pharmaceutical products play a vital role in many perspectives. Due to this unpredictable usage of products, the unreacted components release into waterbodies in trace quantities. Eventhough these trace quantities initiate a crisis of developing resistant antibacterial strains which pose health risks to humans and animals. This work reports the batch adsorption of a fluoroquinolone, a fourth-generation antibiotic compound by a biosorbent made by acid-treated tamarind shells. The shells were treated with zinc chloride and hydrochloric acid. The characterization of biosorbent was performed by Fourier transform infrared spectroscopy and field emission scanning electron microscopy. The optimized adsorption parameters of time, pH and temperature were 30 minutes, 6 and 60 °C. The adsorbent can be reused up to seven times with negligible loss in its adsorption capacity. Adsorption followed by Langmuir, Freundlich and Tempkin model where used to determine the correlation coefficient. Pseudo first-order, second-order and intra-particle kinetic model were used to fit the experimental data. The results are best described by pseudo second-order denoting chemisorption and Freundlich isotherm model describing multilayer adsorption.Novelty StatementThe proposed work is to investigate about improved tamarind shell as biomass used in the removal unreacted PPCP components that have been released into aquatic environment.The novelty of this paper lies in that it puts forward a better resource utilization method for treating PPCP component wastewater, and studies the method theoretically from the perspective of mechanism and proves its feasibility.Identifying the maximum adsorption of antibiotic component from wastewater under different conditions and finding the optimum range.In addition to the existing literatures, this study has compared the adsorption efficiency of raw and treated adsorbent material prepared using Tamarind shell.
水体中的抗生素因其持久性和重组性而成为一种新出现的令人担忧的污染物。在人类生活方式的近期，药品在许多方面都发挥了重要作用。由于这种不可预测的产品使用，未反应的成分以痕量释放到水体中。尽管这些痕量成分引发了产生耐药性抗菌菌株的危机，对人类和动物的健康构成了威胁。本工作报道了用酸处理的罗望子壳制成的生物吸附剂对一种氟喹诺酮类，即第四代抗生素化合物的批吸附。壳用氯化锌和盐酸处理。通过傅里叶变换红外光谱和场发射扫描电子显微镜对生物吸附剂进行了表征。优化的吸附参数为时间、pH 值和温度分别为 30 分钟、6 和 60°C。吸附剂可重复使用七次，其吸附容量损失可忽略不计。吸附遵循 Langmuir、 Freundlich 和 Tempkin 模型，用于确定相关系数。采用伪一阶、二阶和内颗粒动力学模型拟合实验数据。结果用表示化学吸附的伪二阶最好地描述， Freundlich 等温模型描述多层吸附。
本研究旨在探讨改进的罗望子壳作为生物量，用于去除已释放到水生环境中的未反应的 PPCP 成分。本研究的新颖之处在于，它提出了一种更好的处理 PPCP 成分废水的资源利用方法，并从机制角度对该方法进行了理论研究，证明了其可行性。在不同条件下从废水中确定抗生素成分的最大吸附量，并找到最佳范围。除了现有的文献，本研究还比较了使用罗望子壳制备的原始和处理后的吸附剂材料的吸附效率。
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