Efficient detection and extraction of cobalt(II) from lithium ion batteries and wastewater by novel composite adsorbent
Efficient detection and extraction of cobalt(II) from lithium ion batteries and wastewater by novel composite adsorbent
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DOI：
10.1016/j.snb.2013.09.076
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发表时间：
2014-02-01
影响因子：
8.4
通讯作者：
Yaita, Tsuyoshi
中科院分区：
文献类型：
--
作者：
Awual, Md. Rabiul;Ismael, Mohamed;Yaita, Tsuyoshi
本研究开发了一种新型复合吸附剂，用于高选择性和灵敏度地检测和提取锂离子电池（LIB）和废水中的钴（Co（II））。将6-（（2-（2-羟基-1-萘甲酰基）亚肼基）甲基）苯甲酸（HMBA）间接固定在介孔硅胶上制备了复合吸附剂。复合吸附剂增强了颜色形成稳定的络合物[Co（II）-HMBA]（n+）配合物在检测和吸附操作。数据表明，一步检测范围广泛的Co（II）浓度到内部孔表面覆盖的复合吸附剂从溶液中，而不使用高科技仪器，这是该吸附剂的独特功能。不同的吸附参数的影响，如：初始钴（II）浓度，平衡时间，溶液pH值和存在的竞争离子和重复使用进行了系统的研究和讨论。吸附剂对Co（II）离子的有效吸附范围为中性pH，最大吸附量为189.37 mg/g。吸附的Co（II）用反萃剂（0.3M HCl）洗脱，同时在用水冲洗后再生为初始形式用于下一个捕获操作。数据还阐明，复合吸附剂选择性地提取钴（II）从LIB即使在高浓度的不同离子的存在下。重要的是，尽管在吸附-洗脱-回收/再生循环期间进行了许多化学处理，复合吸附剂仍保留了功能。因此，本研究表明，这种低成本的材料可以用作潜在的吸附剂，用于选择性检测和回收的钴（II）离子从LIB和废水流。(C)2013年爱思唯尔B。V.保留所有权利。
This study developed a novel composite adsorbent for highly selective and sensitive detection and extraction of cobalt (Co(II)) from lithium-ion batteries (LIBs) and wastewater. The composite adsorbent was prepared by indirect immobilization of 6-((2-(2-hydroxy-1-naphthoyl)hydrazono) methyl) benzoic acid (HMBA) onto mesoporous silica monoliths. The composite adsorbent enhanced the color formation by stable complexation as [Co(II)-HMBA](n+) complexes during detection and sorption operations. The data evident the one-step detection of wide range Co(II) concentrations into interior pore surface coverage of the composite adsorbent from solutions without using high tech instruments, which was unique feature of this adsorbent. The influence of different sorption parameters, such as: initial Co(II) concentration, equilibration time, solution pH and the presence of competing ions and reuses were studied and discussed systematically. The effective pH range for Co(II) ions detection and sorption was neutral pH region and the maximum sorption capacity of the adsorbent was as high as 189.37 mg/g. The adsorbed Co(II) was eluted with stripping agent (0.3 M HCl) and simultaneously regenerated into initial form for the next capturing operations after rinsing with water. The data also clarified that the composite adsorbent was selectively extracted Co(II) from LIBs even in the presence of high concentration diverse ions. Importantly, the composite adsorbent was retaining functionality in spite of many chemical treatments during sorption-elution-recovery/regeneration cycles. Therefore, the present study revealed that such a low-cost material could be used as potential adsorbent for the selective detection and recovery of Co(II) ions from LIBs and wastewater streams. (C) 2013 Elsevier B. V. All rights reserved.