Abstract：
Frequent detection of terbutaline in wastewater highlights its potential risks to human health associated in the environment. Exposure to terbutaline through contaminated water sources or food chain have adverse effects to human health. This work emphasized on the removal of terbutaline from wastewater using adsorption technology. Mechanochemically synthesized [Cu(INA)2] metal-organic frameworks (MOFs) and its magnetic composite ([Cu(INA)2]-MOF@Fe3O4) are designed with higher specific surface areas and tailored features to accommodate the molecular size and structure of terbutaline. Thus, batch experiment has been conducted using the [Cu(INA)2]-MOF and [Cu(INA)2]-MOF@Fe3O4 for the terbutaline adsorption. The adsorption efficiency achieved by the MOFs was 91.8% and 99.3% for the Cu(INA)2]-MOF and [Cu(INA)2]-MOF@Fe3O4 respectively. The optimum for the adsorption study included terbutaline concentration of 40 mg/L, adsorbent dose of 5 mg/L, pH of 11, temperature of 25 °C and equilibrium time of 40 min. The kinetics and isotherms have been described by pseudo-second order and Langmuir models, while the thermodynamics revealed the exothermic and spontaneous nature of the process. The promising performance of the MOFs is manifested on the ease of regeneration and reusability, achieving adsorption efficiency of 85.0% and 94.7% by the Cu(INA)2]-MOF and [Cu(INA)2]-MOF@Fe3O4, respectively at five consecutive cycles. The higher performance of the MOFs demonstrates their excellent potentialities for the terbutaline adsorption from the aqueous solution.
摘要：
废水中特布他林的频繁检测凸显了其在环境中对人类健康的潜在风险。通过受污染的水源或食物链接触特布他林会对人体健康产生不利影响。这项工作着重于使用吸附技术从废水中去除特布他林。机械化学合成的[Cu（INA）2]金属有机骨架（MOFs）及其磁性复合材料（[Cu（INA）2]-MOF@Fe3O4）被设计为具有更高的比表面积和定制的特征以适应分子大小和特布他林的结构。因此，使用[Cu（INA）2]-MOF和[Cu（INA）2]-MOF@Fe3O4进行了分批实验，用于特布他林吸附。MOFs对Cu(INA)2]-MOF和[Cu(INA)2]-MOF@Fe3O4的吸附效率分别为91.8%和99.3%。吸附研究的最佳条件包括特布他林浓度为40mg/L，吸附剂剂量为5mg/L，pH为11,温度为25°C,平衡时间为40分钟。动力学和等温线已通过伪二阶和Langmuir模型描述，而热力学揭示了该过程的放热和自发性质。MOFs的有希望的性能体现在易于再生和可重用性，Cu(INA)2]-MOF和[Cu(INA)2]-MOF@Fe3O4的吸附效率分别为85.0%和94.7%。MOF的较高性能证明了它们从水溶液中吸附特布他林的优异潜力。
