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Adsorption of perchlorate from aqueous solution by the calcination product of Mg/(Al-Fe) hydrotalcite-like compounds.
J Hazard Mater. 2012 Mar 30; 209-210:318-25.JH

Abstract

The calcination products containing Mg(II), Al(III), and Fe(III) in the brucite-like layers with varying Mg/Al/Fe molar ratios at 550°C were used as the adsorbent to remove perchlorate from aqueous solution, while the Mg/(Al-Fe) hydrotalcite compounds were synthesized by co-precipitation method at a constant pH value. The Mg/(Al-Fe) hydrotalcite compounds (HMAF) were characterized by XRD, FT-IR and TG-DTA. The characteristics showed that the layered double hydroxides structures in the HMAF were lost during calcination at 550°C, but were reconstructed subsequent to adsorption of perchlorate, indicating that the 'memory effect' appeared to play an important role in perchlorate adsorption. Batch adsorption studies were conducted under various equilibration conditions, such as molar ratios of Mg/Al/Fe, calcined temperature, different initial solution pH, adsorbent dose, initial perchlorate concentration, and co-existing anions. It was found that the existence of ferric iron in calcined Mg/(Al-Fe) hydrotalcite compound (CHMAF) was favorable to removal of perchlorate from water, and the best ratio of Mg/Al/Fe is 3:0.8:0.2 (CHMAF5%). This study demonstrated that the calcination product of Mg/(Al-Fe) hydrotalcite-like compound was a promising adsorbent for control of the perchlorate pollution in water.

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Authors+Show Affiliations

Yang Y
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China.
Gao N
No affiliation info available
Chu W
No affiliation info available
Zhang Y
No affiliation info available
Ma Y
No affiliation info available

MeSH

AdsorptionAluminumAluminum HydroxideCalciumHydrogen-Ion ConcentrationIronKineticsMagnesiumMagnesium HydroxidePerchloratesPowder DiffractionSolutionsSpectroscopy, Fourier Transform InfraredThermogravimetryWater

Pub Type(s)

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

Language

eng

PubMed ID

22325635

Citation

Yang, Yiqiong, et al. "Adsorption of Perchlorate From Aqueous Solution By the Calcination Product of Mg/(Al-Fe) Hydrotalcite-like Compounds." Journal of Hazardous Materials, vol. 209-210, 2012, pp. 318-25.
Yang Y, Gao N, Chu W, et al. Adsorption of perchlorate from aqueous solution by the calcination product of Mg/(Al-Fe) hydrotalcite-like compounds. J Hazard Mater. 2012;209-210:318-25.
Yang, Y., Gao, N., Chu, W., Zhang, Y., & Ma, Y. (2012). Adsorption of perchlorate from aqueous solution by the calcination product of Mg/(Al-Fe) hydrotalcite-like compounds. Journal of Hazardous Materials, 209-210, 318-25. https://doi.org/10.1016/j.jhazmat.2012.01.026
Yang Y, et al. Adsorption of Perchlorate From Aqueous Solution By the Calcination Product of Mg/(Al-Fe) Hydrotalcite-like Compounds. J Hazard Mater. 2012 Mar 30;209-210:318-25. PubMed PMID: 22325635.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Adsorption of perchlorate from aqueous solution by the calcination product of Mg/(Al-Fe) hydrotalcite-like compounds. AU - Yang,Yiqiong, AU - Gao,Naiyun, AU - Chu,Wenhai, AU - Zhang,Yongji, AU - Ma,Yan, Y1 - 2012/01/16/ PY - 2011/11/23/received PY - 2012/01/09/revised PY - 2012/01/09/accepted PY - 2012/2/14/entrez PY - 2012/2/14/pubmed PY - 2012/6/1/medline SP - 318 EP - 25 JF - Journal of hazardous materials JO - J Hazard Mater VL - 209-210 N2 - The calcination products containing Mg(II), Al(III), and Fe(III) in the brucite-like layers with varying Mg/Al/Fe molar ratios at 550°C were used as the adsorbent to remove perchlorate from aqueous solution, while the Mg/(Al-Fe) hydrotalcite compounds were synthesized by co-precipitation method at a constant pH value. The Mg/(Al-Fe) hydrotalcite compounds (HMAF) were characterized by XRD, FT-IR and TG-DTA. The characteristics showed that the layered double hydroxides structures in the HMAF were lost during calcination at 550°C, but were reconstructed subsequent to adsorption of perchlorate, indicating that the 'memory effect' appeared to play an important role in perchlorate adsorption. Batch adsorption studies were conducted under various equilibration conditions, such as molar ratios of Mg/Al/Fe, calcined temperature, different initial solution pH, adsorbent dose, initial perchlorate concentration, and co-existing anions. It was found that the existence of ferric iron in calcined Mg/(Al-Fe) hydrotalcite compound (CHMAF) was favorable to removal of perchlorate from water, and the best ratio of Mg/Al/Fe is 3:0.8:0.2 (CHMAF5%). This study demonstrated that the calcination product of Mg/(Al-Fe) hydrotalcite-like compound was a promising adsorbent for control of the perchlorate pollution in water. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/22325635/Adsorption_of_perchlorate_from_aqueous_solution_by_the_calcination_product_of_Mg/_Al_Fe__hydrotalcite_like_compounds_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(12)00055-6 DB - PRIME DP - Unbound Medicine ER -