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首页> 外文期刊>RSC Advances >Assessment of ampicillin removal efficiency from aqueous solution by polydopamine/zirconium(iv) iodate: optimization by response surface methodology
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Assessment of ampicillin removal efficiency from aqueous solution by polydopamine/zirconium(iv) iodate: optimization by response surface methodology

机译：通过聚二胺/锆（IV）碘化物水溶液评价氨苄青霉素去除效率：响应面法优化

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Polydopamine/zirconium( IV ) iodate was prepared by incorporating polydopamine into zirconium iodate gel and studied as an effective adsorbent for ampicillin. In order to characterize the prepared composite, FTIR, XRD, TGA-DTA, SEM and TEM were used. The effects of experimental variables on ampicillin removal were examined using response surface methodology. The optimum conditions for ampicillin removal were 7, 130 min, 20 mg/20 mL and 50 mg L ~(?1) for pH, contact time, adsorbent dose and initial ampicillin concentration, respectively. Under the optimum conditions, the maximum ampicillin removal percentage was found to be 99.12%. The Langmuir isotherm and pseudo-second-order kinetic models explained the removal process more appropriately. The maximum adsorption capacity at 303 K was 100.0 mg g ~(?1) . Thermodynamic study revealed that the ampicillin adsorption was spontaneous and endothermic in nature. The reusability of the prepared material was also explored.
机译：通过将聚二胺掺入锆碘酸盐凝胶中制备聚二胺/锆（IV）碘酸碘，并将其作为氨苄青霉素的有效吸附剂研究。为了表征制备的复合材料，FTIR，XRD，TGA-DTA，SEM和TEM。使用响应表面方法检查实验变量对氨苄青霉素去除的影响。对于pH，接触时间，吸附剂剂量和初始氨苄青霉素浓度，氨苄青霉素除去的最佳条件为7,130分钟，20mg / 20mL和50mg，吸附剂剂量和初始氨苄青霉素浓度。在最佳条件下，发现最大的氨苄青霉素去除率为99.12％。 Langmuir等温线和伪二阶动力学模型更适当地解释了去除过程。 303k的最大吸附容量为100.0mg g〜（α1）。热力学研究表明，氨苄青霉素吸附在自然中自发性和吸热。还探讨了制备的材料的可重用性。

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