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Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin
Ling, C; Liu, FQ; Pei, ZG; Zhang, XP; Wei, MM; Zhang, YH; Zheng, LR; Zhang, J; Li, AM; Xing, BS; Zheng LR(郑黎荣); Zhang J(张静)
2015
发表期刊SCIENTIFIC REPORTS
卷号5页码:9944
文章类型Article
摘要Cu removal by a novel multi-amines decorated resin (PAMD) from wastewater in the absence or presence of citric acid (CA) was examined. Adsorption capacity of Cu onto PAMD markedly increased by 186% to 5.07 mmol/g in the presence of CA, up to 7 times of that onto four commercial resins under the same conditions. Preloaded and kinetic studies demonstrated adsorption of [Cu-CA] complex instead of CA site-bridging and variations of adsorbate species were qualitatively illustrated. The interaction configuration was further studied with ESI-MS, FTIR, XPS and XANES characterizations. The large enhancement of Cu adsorption in Cu-CA bi-solutes systems was attributed to mechanism change from single-site to dual-sites interaction in which cationic or neutral Cu species (Cu2+ and CuHLo) coordinated with neutral amine sites and anionic complex species (CuL- and Cu2L22-) directly interacted with protonated amine sites via electrostatic attraction, and the ratio of the two interactions was approximately 0.5 for the equimolar bi-solutes system. Moreover, commonly coexisting ions in wastewaters had no obvious effect on the superior performance of PAMD. Also, Cu and CA could be recovered completely with HCl. Therefore, PAMD has a great potential to efficiently remove heavy metal ions from wastewaters in the presence of organic acids.
学科领域Science & Technology - Other Topics
DOI10.1038/srep09944
收录类别SCI
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000354309800001
引用统计
被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228528
专题多学科研究中心
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GB/T 7714
Ling, C,Liu, FQ,Pei, ZG,et al. Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin[J]. SCIENTIFIC REPORTS,2015,5:9944.
APA Ling, C.,Liu, FQ.,Pei, ZG.,Zhang, XP.,Wei, MM.,...&张静.(2015).Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin.SCIENTIFIC REPORTS,5,9944.
MLA Ling, C,et al."Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin".SCIENTIFIC REPORTS 5(2015):9944.
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