High-capacity strong cation exchanger prepared from an inactivated immobilized enzyme and its application to the removal of methylene blue from water
High-capacity strong cation exchanger prepared from an inactivated immobilized enzyme and its application to the removal of methylene blue from water
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灭活固定化酶制备的高容量强阳离子交换剂及其在去除水中亚甲蓝中的应用
DOI：
10.1039/c6ra10243c
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发表时间：
2016-06
期刊：
影响因子：
3.9
通讯作者：
Wei Yinmao
中科院分区：
文献类型：
--
作者：
Yuan Jingxiang;Wang Chaozhan;Wei Yinmao
环境保护已成为一个非常重要的问题。将固体废物转化为有利可图的产品以从环境样品中去除有害化学物质引起了人们的极大关注。本研究首次将失活的固定化酶转化为吸附剂进行再利用，并通过表面引发原子转移自由基聚合(SI-ATRP)从粒子表面接枝了聚4-苯磺酸钠(Poly(NASS))，得到了一种强阳离子交换剂。X射线光电子能谱(XPS)证实了聚(NASS)的成功接枝。该阳离子交换树脂对亚甲基蓝(MB)的吸附容量高(409.8 mg g−1)，吸附速度快(1min内达到平衡)，当MB浓度在10~800 mg L−1范围内时，去除率可达96.4%~99.2%，对MB的去除效率为397.1 mg(g−1min−1)，明显优于已有报道的材料。该阳离子交换剂可重复使用5次，脱色率达80%以上。此外，吸附对pH和温度没有明显的依赖性，在高浓度的氯化钠溶液中，吸附容量保持在80%以上，最高可达0.4moL L−1，对不同pH值和盐分浓度的废水中的亚甲基蓝有很好的去除效果，具有较宽的温度范围。
Environmental protection has become a very important issue. The transformation of solid waste into profitable products to remove hazardous chemicals from environmental samples has attracted much attention. In this study, inactivated immobilized enzymes were reutilized by converting into an adsorbent for the first time, and poly(sodium 4-styrene sulfonate) (poly(NASS)) was grafted from the surface of the particles using surface-initiated atom transfer radical polymerization (SI-ATRP) to produce a strong cation exchanger. X-ray photoelectron spectroscopy (XPS) confirmed the successful grafting of poly(NASS). The cation exchanger exhibited very good performance for the adsorption of methylene blue (MB) with a high capacity (409.8 mg g−1) and fast speed (equilibrium achieved within 1 min), the removal ratio was more than 96.4–99.2% when the MB concentration ranged from 10 to 800 mg L−1, and the removal efficiency of the cation exchanger for MB was 397.1 mg (g−1 min−1), these properties are much better than those previously reported materials. The cation exchanger can be used for five times with removal ratio higher than 80%. Additionally, the adsorption exhibited no significant pH and temperature dependence, and more than 80% capacity was maintained at high concentrations of sodium chloride up to 0.4 mol L−1, therefore the exchanger is very favorable for removal of MB from wastewater with different pH values and salt concentrations, and can be used in a wide temperature range.
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影响因子：
13.6
作者：
S. Rovani;M. T. Censi;S. Pedrotti;E. Lima;R. Cataluña;A. Fernandes
通讯作者：
S. Rovani;M. T. Censi;S. Pedrotti;E. Lima;R. Cataluña;A. Fernandes
DOI：
10.1016/j.chroma.2013.11.002
发表时间：
2014-01
期刊：
Journal of chromatography. A
影响因子：
--
作者：
Yongliang Liu;Yonghuan He;Yulong Jin;Yanyan Huang;Guoquan Liu;R. Zhao
通讯作者：
Yongliang Liu;Yonghuan He;Yulong Jin;Yanyan Huang;Guoquan Liu;R. Zhao
表面引发原子转移自由基聚合制备用于蛋白质吸附的高容量强阳离子交换膜
影响因子：
9.5
作者：
Wei, Yinmao;Ma, Jinju;Wang, Chaozhan
通讯作者：
Wang, Chaozhan
影响因子：
4.4
作者：
Bolivar, Juan M.;Rocha-Martin, Javier;Guisan, Jose M.
通讯作者：
Guisan, Jose M.
影响因子：
2.1
作者：
C. Guo;Qingshan Kong;Jixian Gao;Q. Ji;Yanzhi Xia
通讯作者：
C. Guo;Qingshan Kong;Jixian Gao;Q. Ji;Yanzhi Xia