Competitive Adsorption of Cadmium(II) and Mercury(II) Ions from Aqueous Solutions by Activated Carbon from Xanthoceras sorbifolia Bunge Hull

Zhang, Xiaotao; Hao, Yinan; Wang, Ximing; Chen, Zhangjing; Li, Chun

Competitive Adsorption of Cadmium(II) and Mercury(II) Ions from Aqueous Solutions by Activated Carbon from Xanthoceras sorbifolia Bunge Hull

dc.contributor.author	Zhang, Xiaotao	en
dc.contributor.author	Hao, Yinan	en
dc.contributor.author	Wang, Ximing	en
dc.contributor.author	Chen, Zhangjing	en
dc.contributor.author	Li, Chun	en
dc.contributor.department	Sustainable Biomaterials	en
dc.date.accessioned	2017-09-18T09:35:17Z	en
dc.date.available	2017-09-18T09:35:17Z	en
dc.date.issued	2016-12-19	en
dc.date.updated	2017-09-18T09:35:17Z	en
dc.description.abstract	This paper presents low-cost and recyclable activated carbon (XLAC) derived from Xanthoceras sorbifolia Bunge hull for high-efficiency adsorption of Cd(II) and Hg(II) ions in industrial wastewater. XLAC was prepared through H3PO4 activation and was characterized using N2 adsorption-desorption, scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDX), and Fourier transform infrared (FTIR) spectroscopy. In single-metal-system adsorption experiments, the maximum adsorption capacities for Cd(II) and Hg(II) obtained under different experimental conditions were 388.7 and 235.6 mg·g−1, respectively. All adsorption equilibrium data fit perfectly with the Langmuir isotherm model. In a binary metal system, competitive studies demonstrated that the presence of Cd(II) significantly decreased the adsorption of Hg(II), but the adsorption of Cd(II) showed a little change in the presence of Hg(II). In addition, XLAC can be regenerated with a 0.01 mol·L−1 HNO3 solution and reused at least four times. The FTIR spectra revealed that a chemical interaction occurs between functional groups containing lone electron pairs in XLAC and metal ions. Overall, these results suggest that XLAC may be suitable as an adsorbent for heavy metal removal from wastewater streams.	en
dc.description.version	Published version	en
dc.format.mimetype	application/pdf	en
dc.identifier.citation	Xiaotao Zhang, Yinan Hao, Ximing Wang, Zhangjing Chen, and Chun Li, “Competitive Adsorption of Cadmium(II) and Mercury(II) Ions from Aqueous Solutions by Activated Carbon from Xanthoceras sorbifolia Bunge Hull,” Journal of Chemistry, vol. 2016, Article ID 4326351, 10 pages, 2016. doi:10.1155/2016/4326351	en
dc.identifier.doi	https://doi.org/10.1155/2016/4326351	en
dc.identifier.uri	http://hdl.handle.net/10919/78932	en
dc.language.iso	en	en
dc.publisher	Hindawi	en
dc.rights	Creative Commons Attribution 4.0 International	en
dc.rights.holder	Copyright © 2016 Xiaotao Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.	en
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	en
dc.title	Competitive Adsorption of Cadmium(II) and Mercury(II) Ions from Aqueous Solutions by Activated Carbon from Xanthoceras sorbifolia Bunge Hull	en
dc.title.serial	Journal of Chemistry	en
dc.type	Article - Refereed	en
dc.type.dcmitype	Text	en