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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：使用橡胶基水凝胶中镍离子在水溶液中吸附

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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：该工作通过使用过硫酸钾（KPS）作为引发剂和N，N-亚甲基双丙烯酰胺（MBA）作为交联剂，从液态天然橡胶（LNR）和丙烯酸（AAC）的基于橡胶基水凝胶报告。通过使用傅里叶变换红外光谱，热重分析和扫描电子显微镜来确认水凝胶的结构，稳定性和形态。通过使用5级-2系列响应表面方法进行橡胶基水凝胶的溶胀容量和Ni2 +去除百分比的优化。使用恒定的KPS浓度（0.05M）研究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开发了两种反应（溶胀和Ni2 +去除率）的二次模型。当使用高AAC：LNR比率和降低MBA浓度时，改善了水凝胶的溶胀度和Ni2 +去除百分比。这些二次模型的R-2值分别为0.9891和0.9939（溶胀和Ni2 +去除百分比），表明该模型与实验数据很好。从分析中，最大溶胀容量（1181.90％）和Ni2 +去除百分比（26.74％）的最佳条件是水凝胶，AAC：1NR比3.00g / g和0.05M MBA。

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