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Adsorption of Cr(VI) using silica-based adsorbent prepared by radiation-induced grafting.
J Hazard Mater. 2009 Jul 15; 166(1):270-6.JH

Abstract

Silica-based adsorbent was prepared by radiation-induced grafting of dimethylaminoethyl methacrylate (DMAEMA) onto the silanized silica followed by a protonation process. The FTIR spectra and XPS analysis proved that DMAEMA was grafted successfully onto the silica surface. The resultant adsorbent manifested a high ion exchange capacity (IEC) of ca. 1.30 mmol/g and the Cr(VI) adsorption behavior of the adsorbent was further investigated, revealing the recovery of Cr(VI) increased with the adsorbent feed and the equilibrium adsorption could be achieved within 40 min. The adsorption capacity, strongly depended on the pH of the solution, reached a maximum Cr(VI) uptake (ca. 68 mg/g) as the pH was in the range of 2.5-5.0. Furthermore, even in strong acidic (4.0 mol/L HNO(3)) or alkaline media (pH 11.0), the adsorbent had a sound Cr(VI) uptake capacity (ca. 22 and 30 mg/g, respectively), and the adsorption followed Langmuir mode. The results indicated that this adsorbent, prepared via a convenient approach, is applicable for removing heavy-metal-ion pollutants (e.g. Cr(VI)) from waste waters.

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Authors+Show Affiliations

Qiu J
Beijing National Laboratory for Molecular Science (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China. qiujingyi@pku.edu.cn
Wang Z
No affiliation info available
Li H
No affiliation info available
Xu L
No affiliation info available
Peng J
No affiliation info available
Zhai M
No affiliation info available
Yang C
No affiliation info available
Li J
No affiliation info available
Wei G
No affiliation info available

MeSH

AdsorptionChromiumHydrogen-Ion ConcentrationIndustrial WasteIon ExchangeMethacrylatesPhotochemical ProcessesSilicon DioxideWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19117674

Citation

Qiu, Jingyi, et al. "Adsorption of Cr(VI) Using Silica-based Adsorbent Prepared By Radiation-induced Grafting." Journal of Hazardous Materials, vol. 166, no. 1, 2009, pp. 270-6.
Qiu J, Wang Z, Li H, et al. Adsorption of Cr(VI) using silica-based adsorbent prepared by radiation-induced grafting. J Hazard Mater. 2009;166(1):270-6.
Qiu, J., Wang, Z., Li, H., Xu, L., Peng, J., Zhai, M., Yang, C., Li, J., & Wei, G. (2009). Adsorption of Cr(VI) using silica-based adsorbent prepared by radiation-induced grafting. Journal of Hazardous Materials, 166(1), 270-6. https://doi.org/10.1016/j.jhazmat.2008.11.053
Qiu J, et al. Adsorption of Cr(VI) Using Silica-based Adsorbent Prepared By Radiation-induced Grafting. J Hazard Mater. 2009 Jul 15;166(1):270-6. PubMed PMID: 19117674.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Adsorption of Cr(VI) using silica-based adsorbent prepared by radiation-induced grafting. AU - Qiu,Jingyi, AU - Wang,Ziyue, AU - Li,Huibo, AU - Xu,Ling, AU - Peng,Jing, AU - Zhai,Maolin, AU - Yang,Chao, AU - Li,Jiuqiang, AU - Wei,Genshuan, Y1 - 2008/11/24/ PY - 2008/08/22/received PY - 2008/11/06/revised PY - 2008/11/10/accepted PY - 2009/1/2/entrez PY - 2009/1/2/pubmed PY - 2009/8/8/medline SP - 270 EP - 6 JF - Journal of hazardous materials JO - J Hazard Mater VL - 166 IS - 1 N2 - Silica-based adsorbent was prepared by radiation-induced grafting of dimethylaminoethyl methacrylate (DMAEMA) onto the silanized silica followed by a protonation process. The FTIR spectra and XPS analysis proved that DMAEMA was grafted successfully onto the silica surface. The resultant adsorbent manifested a high ion exchange capacity (IEC) of ca. 1.30 mmol/g and the Cr(VI) adsorption behavior of the adsorbent was further investigated, revealing the recovery of Cr(VI) increased with the adsorbent feed and the equilibrium adsorption could be achieved within 40 min. The adsorption capacity, strongly depended on the pH of the solution, reached a maximum Cr(VI) uptake (ca. 68 mg/g) as the pH was in the range of 2.5-5.0. Furthermore, even in strong acidic (4.0 mol/L HNO(3)) or alkaline media (pH 11.0), the adsorbent had a sound Cr(VI) uptake capacity (ca. 22 and 30 mg/g, respectively), and the adsorption followed Langmuir mode. The results indicated that this adsorbent, prepared via a convenient approach, is applicable for removing heavy-metal-ion pollutants (e.g. Cr(VI)) from waste waters. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19117674/Adsorption_of_Cr_VI__using_silica_based_adsorbent_prepared_by_radiation_induced_grafting_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)01684-1 DB - PRIME DP - Unbound Medicine ER -