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首页> 外文期刊>Journal of Polymers and the Environment >Adsorption of Nickel Ion in Aqueous Using Rubber-Based Hydrogel
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Adsorption of Nickel Ion in Aqueous Using Rubber-Based Hydrogel

机译：橡胶基水凝胶对水中镍离子的吸附

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摘要

This work reports about a rubber-based hydrogel from liquid natural rubber (LNR) and acrylic acid (AAc) by using potassium persulfate (KPS) as an initiator and N,N-methylenebisacrylamide (MBA) as a crosslinking agent. The structure, stability, and morphology of the hydrogel were confirmed by using Fourier transform infrared spectroscopy, thermogravimetric analysis, and scanning electron microscope. The optimisation of the swelling capacity and Ni2+ removal percentage by the rubber-based hydrogel was conducted by using 5-level-2-factor response surface methodology. The effect of AAc:LNR ratio (0.59-3.41g/g) and MBA concentration (0.02-0.23M) parameters was studied with constant KPS concentration (0.05M) used. Quadratic models for both responses (swelling and Ni2+ removal percentage) were successfully developed by using statistical analysis. The swelling degree and Ni2+ removal percentage of hydrogel were improved when high AAc:LNR ratio and lower MBA concentration were used. The R-2 values for these quadratic models were 0.9891 and 0.9939 (swelling and Ni2+ removal percentage), respectively, which showed that the models were well-fitted with the experimental data. From the analysis, the optimum conditions for maximum swelling capacity (1181.90%) and Ni2+ removal percentage (26.74%) were hydrogel with AAc:LNR ratio 3.00g/g and 0.05M of MBA.
机译：这项工作报道了一种液态的天然橡胶（LNR）和丙烯酸（AAc）通过使用过硫酸钾（KPS）作为引发剂和N，N-亚甲基双丙烯酰胺（MBA）作为交联剂的橡胶基水凝胶。通过使用傅立叶变换红外光谱，热重分析和扫描电子显微镜确认了水凝胶的结构，稳定性和形态。橡胶基水凝胶的溶胀能力和Ni2 +去除率的优化是使用5级2因子响应面方法进行的。在使用恒定KPS浓度（0.05M）的情况下，研究了AAc：LNR比（0.59-3.41g / g）和MBA浓度（0.02-0.23M）参数的影响。通过使用统计分析成功地开发了两个响应（溶胀和Ni2 +去除百分比）的二次模型。当使用高AAc：LNR比和较低MBA浓度时，水凝胶的溶胀度和Ni2 +去除率得到改善。这些二次模型的R-2值分别为0.9891和0.9939（溶胀和Ni2 +去除百分率），表明模型与实验数据非常吻合。通过分析，最大溶胀能力（1181.90％）和Ni2 +去除率（26.74％）的最佳条件是水凝胶，AAc：LNR比为3.00g / g，MBA含量为0.05M。

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