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A comparative study of linear and non-linear regression analysis for ammonium exchange by clinoptilolite zeolite.
J Hazard Mater. 2007 Jun 01; 144(1-2):432-7.JH

Abstract

Ammonium ion exchange from aqueous solution using clinoptilolite zeolite was investigated at laboratory scale. Batch experimental studies were conducted to evaluate the effect of various parameters such as pH, zeolite dosage, contact time, initial ammonium concentration and temperature. Freundlich and Langmuir isotherm models and pseudo-second-order model were fitted to experimental data. Linear and non-linear regression methods were compared to determine the best fitting of isotherm and kinetic model to experimental data. The rate limiting mechanism of ammonium uptake by zeolite was determined as chemical exchange. Non-linear regression has better performance for analyzing experimental data and Freundlich model was better than Langmuir to represent equilibrium data.

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Authors+Show Affiliations

Karadag D
Yildiz Technical University, Department of Environmental Engineering, 34669 Besiktas, Istanbul, Turkey. dkaradag@yildiz.edu.tr
Koc Y
No affiliation info available
Turan M
No affiliation info available
Ozturk M
No affiliation info available

MeSH

Hydrogen-Ion ConcentrationIon ExchangeQuaternary Ammonium CompoundsRegression AnalysisTime FactorsWaste Disposal, FluidWater Pollutants, ChemicalWater PurificationZeolites

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

17118538

Citation

Karadag, Dogan, et al. "A Comparative Study of Linear and Non-linear Regression Analysis for Ammonium Exchange By Clinoptilolite Zeolite." Journal of Hazardous Materials, vol. 144, no. 1-2, 2007, pp. 432-7.
Karadag D, Koc Y, Turan M, et al. A comparative study of linear and non-linear regression analysis for ammonium exchange by clinoptilolite zeolite. J Hazard Mater. 2007;144(1-2):432-7.
Karadag, D., Koc, Y., Turan, M., & Ozturk, M. (2007). A comparative study of linear and non-linear regression analysis for ammonium exchange by clinoptilolite zeolite. Journal of Hazardous Materials, 144(1-2), 432-7.
Karadag D, et al. A Comparative Study of Linear and Non-linear Regression Analysis for Ammonium Exchange By Clinoptilolite Zeolite. J Hazard Mater. 2007 Jun 1;144(1-2):432-7. PubMed PMID: 17118538.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A comparative study of linear and non-linear regression analysis for ammonium exchange by clinoptilolite zeolite. AU - Karadag,Dogan, AU - Koc,Yunus, AU - Turan,Mustafa, AU - Ozturk,Mustafa, Y1 - 2006/10/26/ PY - 2006/08/10/received PY - 2006/10/13/revised PY - 2006/10/17/accepted PY - 2006/11/23/pubmed PY - 2007/8/31/medline PY - 2006/11/23/entrez SP - 432 EP - 7 JF - Journal of hazardous materials JO - J Hazard Mater VL - 144 IS - 1-2 N2 - Ammonium ion exchange from aqueous solution using clinoptilolite zeolite was investigated at laboratory scale. Batch experimental studies were conducted to evaluate the effect of various parameters such as pH, zeolite dosage, contact time, initial ammonium concentration and temperature. Freundlich and Langmuir isotherm models and pseudo-second-order model were fitted to experimental data. Linear and non-linear regression methods were compared to determine the best fitting of isotherm and kinetic model to experimental data. The rate limiting mechanism of ammonium uptake by zeolite was determined as chemical exchange. Non-linear regression has better performance for analyzing experimental data and Freundlich model was better than Langmuir to represent equilibrium data. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17118538/A_comparative_study_of_linear_and_non_linear_regression_analysis_for_ammonium_exchange_by_clinoptilolite_zeolite_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(06)01279-9 DB - PRIME DP - Unbound Medicine ER -