Equilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff

Abstract Novel biosorbents were derived from a waste product of palm kernel oil extraction known as palm kernel chaff (PKC). One portion of the PKC was carbonized in a furnace and then activated chemically, while the other half was activated without carbonization. Both were designated as CPKC and UP...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Chidozie Charles Nnaji, Akambende Edward Agim, Cordelia Nnennaya Mama, PraiseGod Chidozie Emenike, Nkpa Mba Ogarekpe
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/24911ff5f8874263bd027283d4a04492
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:24911ff5f8874263bd027283d4a04492
record_format	dspace
spelling	oai:doaj.org-article:24911ff5f8874263bd027283d4a044922021-12-02T14:37:07ZEquilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff10.1038/s41598-021-86932-62045-2322https://doaj.org/article/24911ff5f8874263bd027283d4a044922021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86932-6https://doaj.org/toc/2045-2322Abstract Novel biosorbents were derived from a waste product of palm kernel oil extraction known as palm kernel chaff (PKC). One portion of the PKC was carbonized in a furnace and then activated chemically, while the other half was activated without carbonization. Both were designated as CPKC and UPKC, respectively. The two biosorbents so produced were then used to conduct batch equilibrium and kinetic sorption studies at 30 °C, 35 °C and 40 °C and pH 3.0 and 9.0 for an agitation period of 5, 10, 20, 40, 60, 90, and 120 min. The Koble-Corrigan, Dubinin-Radushkevich, and the Freundlich isotherms fitted the experimental data very well with R2 values of 0.97 to 1.0, 0.95 to 1.0, and 0.96 to 1.0, respectively. The linear type II Langmuir isotherm performed much better (0.96 ≤ R2 ≤ 1.0) than the nonlinear isotherm. The maximum sorption capacity was obtained as 120.6 mg/g using CPKC at pH 9.0 and 35 °C. The Langmuir separation coefficient values (0.022 ≤ RL ≤ 0.926) show that the sorption of nickel to PKC is favorable. The most favorable sorption condition was found for CPKC at pH 9 and temperature of 40 °C. The values of sorption energy (8.21 ≤ E ≤ 14.27) and the isosteric heat of sorption (−133.09 ≤ ∆Hx ≤ −17.92) indicate that the mode of sorption is mostly ion exchange. Thermodynamic parameters also show that the process is exothermic and entropy-driven. The pseudo-second-order kinetic model shows the best correlation compared to the other kinetic models. The coefficient of correlation for the pseudo-second-order model was mostly within the range of 0.999–1.000 for 90% of all kinetic studies carried out.Chidozie Charles NnajiAkambende Edward AgimCordelia Nnennaya MamaPraiseGod Chidozie EmenikeNkpa Mba OgarekpeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-20 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chidozie Charles Nnaji Akambende Edward Agim Cordelia Nnennaya Mama PraiseGod Chidozie Emenike Nkpa Mba Ogarekpe Equilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff
description	Abstract Novel biosorbents were derived from a waste product of palm kernel oil extraction known as palm kernel chaff (PKC). One portion of the PKC was carbonized in a furnace and then activated chemically, while the other half was activated without carbonization. Both were designated as CPKC and UPKC, respectively. The two biosorbents so produced were then used to conduct batch equilibrium and kinetic sorption studies at 30 °C, 35 °C and 40 °C and pH 3.0 and 9.0 for an agitation period of 5, 10, 20, 40, 60, 90, and 120 min. The Koble-Corrigan, Dubinin-Radushkevich, and the Freundlich isotherms fitted the experimental data very well with R2 values of 0.97 to 1.0, 0.95 to 1.0, and 0.96 to 1.0, respectively. The linear type II Langmuir isotherm performed much better (0.96 ≤ R2 ≤ 1.0) than the nonlinear isotherm. The maximum sorption capacity was obtained as 120.6 mg/g using CPKC at pH 9.0 and 35 °C. The Langmuir separation coefficient values (0.022 ≤ RL ≤ 0.926) show that the sorption of nickel to PKC is favorable. The most favorable sorption condition was found for CPKC at pH 9 and temperature of 40 °C. The values of sorption energy (8.21 ≤ E ≤ 14.27) and the isosteric heat of sorption (−133.09 ≤ ∆Hx ≤ −17.92) indicate that the mode of sorption is mostly ion exchange. Thermodynamic parameters also show that the process is exothermic and entropy-driven. The pseudo-second-order kinetic model shows the best correlation compared to the other kinetic models. The coefficient of correlation for the pseudo-second-order model was mostly within the range of 0.999–1.000 for 90% of all kinetic studies carried out.
format	article
author	Chidozie Charles Nnaji Akambende Edward Agim Cordelia Nnennaya Mama PraiseGod Chidozie Emenike Nkpa Mba Ogarekpe
author_facet	Chidozie Charles Nnaji Akambende Edward Agim Cordelia Nnennaya Mama PraiseGod Chidozie Emenike Nkpa Mba Ogarekpe
author_sort	Chidozie Charles Nnaji
title	Equilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff
title_short	Equilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff
title_full	Equilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff
title_fullStr	Equilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff
title_full_unstemmed	Equilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff
title_sort	equilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/24911ff5f8874263bd027283d4a04492
work_keys_str_mv	AT chidoziecharlesnnaji equilibriumandthermodynamicinvestigationofbiosorptionofnickelfromwaterbyactivatedcarbonmadefrompalmkernelchaff AT akambendeedwardagim equilibriumandthermodynamicinvestigationofbiosorptionofnickelfromwaterbyactivatedcarbonmadefrompalmkernelchaff AT cordeliannennayamama equilibriumandthermodynamicinvestigationofbiosorptionofnickelfromwaterbyactivatedcarbonmadefrompalmkernelchaff AT praisegodchidozieemenike equilibriumandthermodynamicinvestigationofbiosorptionofnickelfromwaterbyactivatedcarbonmadefrompalmkernelchaff AT nkpambaogarekpe equilibriumandthermodynamicinvestigationofbiosorptionofnickelfromwaterbyactivatedcarbonmadefrompalmkernelchaff
_version_	1718390996704690176

Equilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff

Ejemplares similares