REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTION USING ACTIVATED RICE HUSK BIOCHAR: ADSORPTION ISOTHERMS, KINETICS AND ERROR ANALYSIS

ABSTRACT Removal efficiency of methylene blue (MEB) from aqueous media was studied under different experimental conditions of pH, contact time and initial concentration of the adsorbate. Activated rice husk biochar (ARHB) was characterized using BET surface area and XRD. The XRD diffraction indicate...

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Autores principales:	Nworie,F. S., Nwabue,F.I., Oti,W., Mbam,E., Nwali,B.U.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2019
Materias:	MEB isotherm models kinetic models error analysis ARHB
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000104365
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spelling	oai:scielo:S0717-970720190001043652019-04-11REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTION USING ACTIVATED RICE HUSK BIOCHAR: ADSORPTION ISOTHERMS, KINETICS AND ERROR ANALYSISNworie,F. S.Nwabue,F.I.Oti,W.Mbam,E.Nwali,B.U. MEB isotherm models kinetic models error analysis ARHB ABSTRACT Removal efficiency of methylene blue (MEB) from aqueous media was studied under different experimental conditions of pH, contact time and initial concentration of the adsorbate. Activated rice husk biochar (ARHB) was characterized using BET surface area and XRD. The XRD diffraction indicated amorphous nature of the biochar with pore size (cc/g) and pore surface area (m2/g) of 9.369 and 27.32 respectively from BET surface area plot. Equilibrium isotherm based on coefficient of non- determination indicated the following order as best fit model: Hill > Kiselev >Elovic >Flory-Huggins > Langmuir > Jovanovic > Harkin-Jura >Freundlich > Henry > Temkin >Redlich Peterson>Durbinin-Kaganer Redushkevich >Hill–de Boer > Fowler–Guggenheim. Based on the highest correlation coefficient and the lowest values of the error functions applied to the kinetic models, Weber and Morris intra-particle diffusion and liquid film diffusion were noted to be in control of the sorption rate. The MEB sorption capacity of the activated biochar was 356.99 mmolkg−1 which was in the range of commercially available activated carbons and other biosorbents.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.64 n.1 20192019-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000104365en10.4067/s0717-97072019000104365
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	MEB isotherm models kinetic models error analysis ARHB
spellingShingle	MEB isotherm models kinetic models error analysis ARHB Nworie,F. S. Nwabue,F.I. Oti,W. Mbam,E. Nwali,B.U. REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTION USING ACTIVATED RICE HUSK BIOCHAR: ADSORPTION ISOTHERMS, KINETICS AND ERROR ANALYSIS
description	ABSTRACT Removal efficiency of methylene blue (MEB) from aqueous media was studied under different experimental conditions of pH, contact time and initial concentration of the adsorbate. Activated rice husk biochar (ARHB) was characterized using BET surface area and XRD. The XRD diffraction indicated amorphous nature of the biochar with pore size (cc/g) and pore surface area (m2/g) of 9.369 and 27.32 respectively from BET surface area plot. Equilibrium isotherm based on coefficient of non- determination indicated the following order as best fit model: Hill > Kiselev >Elovic >Flory-Huggins > Langmuir > Jovanovic > Harkin-Jura >Freundlich > Henry > Temkin >Redlich Peterson>Durbinin-Kaganer Redushkevich >Hill–de Boer > Fowler–Guggenheim. Based on the highest correlation coefficient and the lowest values of the error functions applied to the kinetic models, Weber and Morris intra-particle diffusion and liquid film diffusion were noted to be in control of the sorption rate. The MEB sorption capacity of the activated biochar was 356.99 mmolkg−1 which was in the range of commercially available activated carbons and other biosorbents.
author	Nworie,F. S. Nwabue,F.I. Oti,W. Mbam,E. Nwali,B.U.
author_facet	Nworie,F. S. Nwabue,F.I. Oti,W. Mbam,E. Nwali,B.U.
author_sort	Nworie,F. S.
title	REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTION USING ACTIVATED RICE HUSK BIOCHAR: ADSORPTION ISOTHERMS, KINETICS AND ERROR ANALYSIS
title_short	REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTION USING ACTIVATED RICE HUSK BIOCHAR: ADSORPTION ISOTHERMS, KINETICS AND ERROR ANALYSIS
title_full	REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTION USING ACTIVATED RICE HUSK BIOCHAR: ADSORPTION ISOTHERMS, KINETICS AND ERROR ANALYSIS
title_fullStr	REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTION USING ACTIVATED RICE HUSK BIOCHAR: ADSORPTION ISOTHERMS, KINETICS AND ERROR ANALYSIS
title_full_unstemmed	REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTION USING ACTIVATED RICE HUSK BIOCHAR: ADSORPTION ISOTHERMS, KINETICS AND ERROR ANALYSIS
title_sort	removal of methylene blue from aqueous solution using activated rice husk biochar: adsorption isotherms, kinetics and error analysis
publisher	Sociedad Chilena de Química
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000104365
work_keys_str_mv	AT nworiefs removalofmethylenebluefromaqueoussolutionusingactivatedricehuskbiocharadsorptionisothermskineticsanderroranalysis AT nwabuefi removalofmethylenebluefromaqueoussolutionusingactivatedricehuskbiocharadsorptionisothermskineticsanderroranalysis AT otiw removalofmethylenebluefromaqueoussolutionusingactivatedricehuskbiocharadsorptionisothermskineticsanderroranalysis AT mbame removalofmethylenebluefromaqueoussolutionusingactivatedricehuskbiocharadsorptionisothermskineticsanderroranalysis AT nwalibu removalofmethylenebluefromaqueoussolutionusingactivatedricehuskbiocharadsorptionisothermskineticsanderroranalysis
_version_	1714200935525253120

REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTION USING ACTIVATED RICE HUSK BIOCHAR: ADSORPTION ISOTHERMS, KINETICS AND ERROR ANALYSIS

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