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Nitrate sorption by thermally activated Mg/Al chloride hydrotalcite-like compound.
J Hazard Mater. 2009 Sep 30; 169(1-3):524-31.JH

Abstract

A laboratory study was conducted to investigate the ability of Mg-Al-Cl hydrotalcite-like compound for the removal of nitrate from synthetic nitrate solution. In the present study Mg-Al-Cl hydrotalcite was synthesized by co-precipitation method and was characterized using SEM, XRD, FTIR and TGA-DSC. To know the practical applicability, a detailed removal study of nitrate ion was carried out. The removal of nitrate was 87.6% under neutral condition, using 0.3g of adsorbent in 100mL of nitrate solution having initial concentration of 10mg/L. Adsorption kinetic study revealed that the adsorption process followed first-order kinetics. Adsorption data were fitted to linearly transformed Langmuir isotherm with R(2) (correlation coefficient)>0.99. Thermodynamic parameters were also calculated to study the effect of temperature on the removal process. In order to understand the adsorption type, equilibrium data were tested with Dubinin-Radushkevich isotherm. The percentage removal was found to decrease gradually with increase in pH and the optimum pH was found to be 6. The process was rapid and equilibrium was established within first 40 min.

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Authors+Show Affiliations

Islam M
Department of Chemistry, Purushottam Institute of Engineering and Technology, Rourkela 77 0 034, India. smartmintu@gmail.com
Patel R
No affiliation info available

MeSH

AdsorptionAluminum HydroxideHydrogen-Ion ConcentrationKineticsMagnesium HydroxideNitratesPilot ProjectsSolutionsThermodynamicsWater Pollutants, Chemical

Pub Type(s)

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

Language

eng

PubMed ID

19406574

Citation

Islam, Mahamudur, and Rajkishore Patel. "Nitrate Sorption By Thermally Activated Mg/Al Chloride Hydrotalcite-like Compound." Journal of Hazardous Materials, vol. 169, no. 1-3, 2009, pp. 524-31.
Islam M, Patel R. Nitrate sorption by thermally activated Mg/Al chloride hydrotalcite-like compound. J Hazard Mater. 2009;169(1-3):524-31.
Islam, M., & Patel, R. (2009). Nitrate sorption by thermally activated Mg/Al chloride hydrotalcite-like compound. Journal of Hazardous Materials, 169(1-3), 524-31. https://doi.org/10.1016/j.jhazmat.2009.03.128
Islam M, Patel R. Nitrate Sorption By Thermally Activated Mg/Al Chloride Hydrotalcite-like Compound. J Hazard Mater. 2009 Sep 30;169(1-3):524-31. PubMed PMID: 19406574.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Nitrate sorption by thermally activated Mg/Al chloride hydrotalcite-like compound. AU - Islam,Mahamudur, AU - Patel,Rajkishore, Y1 - 2009/04/05/ PY - 2008/10/19/received PY - 2009/03/09/revised PY - 2009/03/27/accepted PY - 2009/5/2/entrez PY - 2009/5/2/pubmed PY - 2009/9/29/medline SP - 524 EP - 31 JF - Journal of hazardous materials JO - J Hazard Mater VL - 169 IS - 1-3 N2 - A laboratory study was conducted to investigate the ability of Mg-Al-Cl hydrotalcite-like compound for the removal of nitrate from synthetic nitrate solution. In the present study Mg-Al-Cl hydrotalcite was synthesized by co-precipitation method and was characterized using SEM, XRD, FTIR and TGA-DSC. To know the practical applicability, a detailed removal study of nitrate ion was carried out. The removal of nitrate was 87.6% under neutral condition, using 0.3g of adsorbent in 100mL of nitrate solution having initial concentration of 10mg/L. Adsorption kinetic study revealed that the adsorption process followed first-order kinetics. Adsorption data were fitted to linearly transformed Langmuir isotherm with R(2) (correlation coefficient)>0.99. Thermodynamic parameters were also calculated to study the effect of temperature on the removal process. In order to understand the adsorption type, equilibrium data were tested with Dubinin-Radushkevich isotherm. The percentage removal was found to decrease gradually with increase in pH and the optimum pH was found to be 6. The process was rapid and equilibrium was established within first 40 min. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19406574/Nitrate_sorption_by_thermally_activated_Mg/Al_chloride_hydrotalcite_like_compound_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(09)00530-5 DB - PRIME DP - Unbound Medicine ER -