Reactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling

Industrial wastewaters laden with toxic dyes are required to be treated prior to their disposal in view of their adverse effect on human health and aquatic ecosystems. Thus in this research, CaFe2O4 nanoparticles were prepared and used as adsorbent for elimination of reactive orange 12 dye (RO12) fr...

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Autores principales:	Payel Das, Animesh Debnath
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption dye kinetic study magnetic nanoparticle neural network modeling Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/05a05f8d3d1444df80ac166dd98a46a7
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spelling	oai:doaj.org-article:05a05f8d3d1444df80ac166dd98a46a72021-11-05T21:16:44ZReactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling1751-231X10.2166/wpt.2021.064https://doaj.org/article/05a05f8d3d1444df80ac166dd98a46a72021-10-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/4/1141https://doaj.org/toc/1751-231XIndustrial wastewaters laden with toxic dyes are required to be treated prior to their disposal in view of their adverse effect on human health and aquatic ecosystems. Thus in this research, CaFe2O4 nanoparticles were prepared and used as adsorbent for elimination of reactive orange 12 dye (RO12) from aqueous medium. The CaFe2O4 nanoparticles exhibit specific surface area of ∼230 m2/g and average pore diameter of ∼2.5 nm. Maximum RO12 removal of 77% was observed at solution pH 2.0 with uptake capacity of 276.92 mg/g. The electrostatic interaction between CaFe2O4 nanoparticles and RO12 was the main driving force behind this adsorption. The kinetic modeling reveals that this adsorption process obeyed the pseudo-second-order kinetic model accurately (R2: 0.988–0.994), indicating chemisorption behavior. The adsorption experimental data firmly followed the Langmuir isotherm model (R2: 0.997), confirming monolayer adsorption. Thermodynamic study suggests that the adsorption process is spontaneous (ΔG0 = −8.76 to −3.19 kJ/mol) and exothermic in nature (ΔH0 = –71.86 kJ). A neural network model (optimum topology of 4–7–1) was developed for precise forecasting of RO12 removal (%). The developed model with very high correlation coefficient (0.986) and very low mean squared error (0.00185) was successful for accurate prediction of experimental data. HIGHLIGHTS The nano size of CaFe2O4 helps achieving good adsorption capacity of 276.92 mg/g.; The adsorption procedure follows pseudo-second order kinetics and the Langmuir isotherm model.; ANN model shows very high correlation coefficient (R2 = 0.986) and very low mean squared error (MSE = 0.00185).; Magnetically separable CaFe2O4 nanoparticles are easy to separate from aqueous media due to their superior magnetic property.;Payel DasAnimesh DebnathIWA Publishingarticleadsorptiondyekinetic studymagnetic nanoparticleneural network modelingEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 4, Pp 1141-1158 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption dye kinetic study magnetic nanoparticle neural network modeling Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption dye kinetic study magnetic nanoparticle neural network modeling Environmental technology. Sanitary engineering TD1-1066 Payel Das Animesh Debnath Reactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling
description	Industrial wastewaters laden with toxic dyes are required to be treated prior to their disposal in view of their adverse effect on human health and aquatic ecosystems. Thus in this research, CaFe2O4 nanoparticles were prepared and used as adsorbent for elimination of reactive orange 12 dye (RO12) from aqueous medium. The CaFe2O4 nanoparticles exhibit specific surface area of ∼230 m2/g and average pore diameter of ∼2.5 nm. Maximum RO12 removal of 77% was observed at solution pH 2.0 with uptake capacity of 276.92 mg/g. The electrostatic interaction between CaFe2O4 nanoparticles and RO12 was the main driving force behind this adsorption. The kinetic modeling reveals that this adsorption process obeyed the pseudo-second-order kinetic model accurately (R2: 0.988–0.994), indicating chemisorption behavior. The adsorption experimental data firmly followed the Langmuir isotherm model (R2: 0.997), confirming monolayer adsorption. Thermodynamic study suggests that the adsorption process is spontaneous (ΔG0 = −8.76 to −3.19 kJ/mol) and exothermic in nature (ΔH0 = –71.86 kJ). A neural network model (optimum topology of 4–7–1) was developed for precise forecasting of RO12 removal (%). The developed model with very high correlation coefficient (0.986) and very low mean squared error (0.00185) was successful for accurate prediction of experimental data. HIGHLIGHTS The nano size of CaFe2O4 helps achieving good adsorption capacity of 276.92 mg/g.; The adsorption procedure follows pseudo-second order kinetics and the Langmuir isotherm model.; ANN model shows very high correlation coefficient (R2 = 0.986) and very low mean squared error (MSE = 0.00185).; Magnetically separable CaFe2O4 nanoparticles are easy to separate from aqueous media due to their superior magnetic property.;
format	article
author	Payel Das Animesh Debnath
author_facet	Payel Das Animesh Debnath
author_sort	Payel Das
title	Reactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling
title_short	Reactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling
title_full	Reactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling
title_fullStr	Reactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling
title_full_unstemmed	Reactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling
title_sort	reactive orange 12 dye adsorption onto magnetically separable cafe2o4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/05a05f8d3d1444df80ac166dd98a46a7
work_keys_str_mv	AT payeldas reactiveorange12dyeadsorptionontomagneticallyseparablecafe2o4nanoparticlessynthesizedbysimplechemicalroutekineticisothermandneuralnetworkmodeling AT animeshdebnath reactiveorange12dyeadsorptionontomagneticallyseparablecafe2o4nanoparticlessynthesizedbysimplechemicalroutekineticisothermandneuralnetworkmodeling
_version_	1718443959035887616

Reactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling

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