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New alginate-based interpenetrating polymer networks for water treatment: A response surface methodology based optimization study.
International Journal of Biological Macromolecules ( IF 7.7 ) Pub Date : 2020-03-28 , DOI: 10.1016/j.ijbiomac.2020.03.220 Eslam G Al-Sakkari 1 , Omar M Abdeldayem 2 , Eslam E Genina 2 , Lobna Amin 2 , Nouran T Bahgat 2 , Eldon R Rene 3 , Ibrahim M El-Sherbiny 2
International Journal of Biological Macromolecules ( IF 7.7 ) Pub Date : 2020-03-28 , DOI: 10.1016/j.ijbiomac.2020.03.220 Eslam G Al-Sakkari 1 , Omar M Abdeldayem 2 , Eslam E Genina 2 , Lobna Amin 2 , Nouran T Bahgat 2 , Eldon R Rene 3 , Ibrahim M El-Sherbiny 2
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Different interpenetrating polymeric networks (IPN) based on sodium alginate, carrageenan and bentonite were developed to remove heavy metals and dyes from contaminated water. Four significant preparation factors; crosslinking time, calcium chloride concentration, alginate to carrageenan mass ratio,and bentonite to carrageenan mass ratio were studied and optimized via full factorial design and response surface methodology to determine the optimum composition with highest adsorption capacity. Different optimal conditions and combinations were found depending on the type of heavy metal or dye to be removed. Low calcium chloride concentration was a common factor in all cases of heavy metals and dyes removal which indicates the negative effect of excessive crosslinking on the removal percentage. The adsorption capacity of methylene blue, Fe3+, Ni2+, and Cr3+ ions is 1271, 1550, 1500 and 1540 mg/g adsorbent, respectively. Reusability tests confirmed that the optimized formulations can be reused five successive times without significant drop in their removal efficiency. Upon utilization of the optimized formulations on real contaminated waters from tannery plant and oasis groundwater, they demonstrated an excellent performance as they removed above 95% of the original heavy metals contaminants and 40% of the acidic dye content.
中文翻译：
基于藻酸盐的新型互穿聚合物网络用于水处理：基于响应面方法的优化研究。
开发了基于藻酸钠，角叉菜胶和膨润土的不同互穿聚合物网络（IPN），以从污水中去除重金属和染料。四个重要的准备因素；通过全因子设计和响应面方法研究并优化了交联时间，氯化钙浓度，藻酸盐与角叉菜胶质量比以及膨润土与角叉菜胶质量比，以确定具有最高吸附容量的最佳组成。根据要去除的重金属或染料的类型，发现了不同的最佳条件和组合。在所有重金属和染料去除的情况下，低的氯化钙浓度是一个共同的因素，这表明过度交联对去除率的负面影响。亚甲基蓝，Fe3 +，Ni2 +，Cr3 +离子的吸附量分别为1271、1550、1500和1540 mg / g。可重复使用性测试证实，优化的配方可连续使用五次，而去除效率不会明显下降。在制革厂和绿洲地下水的实际污染水上使用优化配方后，它们表现出优异的性能，因为它们去除了超过95％的原始重金属污染物和40％的酸性染料含量。
更新日期：2020-03-28
中文翻译：
基于藻酸盐的新型互穿聚合物网络用于水处理：基于响应面方法的优化研究。
开发了基于藻酸钠，角叉菜胶和膨润土的不同互穿聚合物网络（IPN），以从污水中去除重金属和染料。四个重要的准备因素；通过全因子设计和响应面方法研究并优化了交联时间，氯化钙浓度，藻酸盐与角叉菜胶质量比以及膨润土与角叉菜胶质量比，以确定具有最高吸附容量的最佳组成。根据要去除的重金属或染料的类型，发现了不同的最佳条件和组合。在所有重金属和染料去除的情况下，低的氯化钙浓度是一个共同的因素，这表明过度交联对去除率的负面影响。亚甲基蓝，Fe3 +，Ni2 +，Cr3 +离子的吸附量分别为1271、1550、1500和1540 mg / g。可重复使用性测试证实，优化的配方可连续使用五次，而去除效率不会明显下降。在制革厂和绿洲地下水的实际污染水上使用优化配方后，它们表现出优异的性能，因为它们去除了超过95％的原始重金属污染物和40％的酸性染料含量。
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