Novel aluminium (hydr) oxide-functionalized activated carbon derived from Raffia palm (Raphia hookeri) shells: Augmentation of its adsorptive properties for efficient fluoride uptake in aqueous media

In this study a novel activated carbon derived from Raffia palm shells was synthesized firstly by activating the precursor with phosphoric acid to produce Raffia Palm Shell Activated Carbon (RPSAC) and further functionalized by coating its surface with aluminium hydroxide to produce a composite call...

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Autores principales:	Raphael T. Iwar, Oliver T. Iorhemen, Kola' Ogedengbe, Kamil Kayode Katibi
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2021
Materias:	Fluoride Groundwater Batch adsorption Composite Aluminium hydroxide Raffia palm shells Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/b9e852f575fe4f8684257e8511a53813
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spelling	oai:doaj.org-article:b9e852f575fe4f8684257e8511a538132021-11-16T04:11:14ZNovel aluminium (hydr) oxide-functionalized activated carbon derived from Raffia palm (Raphia hookeri) shells: Augmentation of its adsorptive properties for efficient fluoride uptake in aqueous media2590-182610.1016/j.enceco.2021.03.003https://doaj.org/article/b9e852f575fe4f8684257e8511a538132021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2590182621000096https://doaj.org/toc/2590-1826In this study a novel activated carbon derived from Raffia palm shells was synthesized firstly by activating the precursor with phosphoric acid to produce Raffia Palm Shell Activated Carbon (RPSAC) and further functionalized by coating its surface with aluminium hydroxide to produce a composite called Aluminium Oxide-coated Raffia Palm Shell Activated Carbon (ACRPSAC). These adsorbents were extensively characterized and tested for fluoride adsorption in aqueous media using batch adsorption experiment in comparison with a commercially available activated carbon (CAC). ACRPSAC demonstrated excellent qualities and fluoride adsorption capacity as compared to RPSAC. SEM/EDX revealed that ACRPSAC developed both micro and meso-pores on its surface with BET-surface area and pore volume of 715.80 m2/g and 0.47 cm3/g respectively. FTIR and XRD proved that ACRPSAC was largely amorphous and had sufficient functionality for fluoride uptake in solution. Batch adsorption studies showed that the fluoride removal abilities were in the order of ACRPSAC > RPSAC > CAC with maximum Langmuir adsorption capacity of 4.10 > 2.26 > 2.24 mg/g. respectively. The experimental data was well described by the Langmuir (R2 = 0.8802–0.9751) and the pseudo-second order kinetic (R2 = 0.9974–0.9999) models, signifying that fluoride uptake by the adsorbents was a chemisorption process. Thermodynamic studies revealed that the process was spontaneous, endothermic and feasible for ACRPSAC and RPSAC but was non-spontaneous for CAC. It was concluded that ACRPSAC is an excellent activated carbon for eliminating fluoride from groundwater and can be further studied for its commercialization.Raphael T. IwarOliver T. IorhemenKola' OgedengbeKamil Kayode KatibiKeAi Communications Co., Ltd.articleFluorideGroundwaterBatch adsorptionCompositeAluminium hydroxideRaffia palm shellsEnvironmental technology. Sanitary engineeringTD1-1066ENEnvironmental Chemistry and Ecotoxicology, Vol 3, Iss , Pp 142-154 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Fluoride Groundwater Batch adsorption Composite Aluminium hydroxide Raffia palm shells Environmental technology. Sanitary engineering TD1-1066
spellingShingle	Fluoride Groundwater Batch adsorption Composite Aluminium hydroxide Raffia palm shells Environmental technology. Sanitary engineering TD1-1066 Raphael T. Iwar Oliver T. Iorhemen Kola' Ogedengbe Kamil Kayode Katibi Novel aluminium (hydr) oxide-functionalized activated carbon derived from Raffia palm (Raphia hookeri) shells: Augmentation of its adsorptive properties for efficient fluoride uptake in aqueous media
description	In this study a novel activated carbon derived from Raffia palm shells was synthesized firstly by activating the precursor with phosphoric acid to produce Raffia Palm Shell Activated Carbon (RPSAC) and further functionalized by coating its surface with aluminium hydroxide to produce a composite called Aluminium Oxide-coated Raffia Palm Shell Activated Carbon (ACRPSAC). These adsorbents were extensively characterized and tested for fluoride adsorption in aqueous media using batch adsorption experiment in comparison with a commercially available activated carbon (CAC). ACRPSAC demonstrated excellent qualities and fluoride adsorption capacity as compared to RPSAC. SEM/EDX revealed that ACRPSAC developed both micro and meso-pores on its surface with BET-surface area and pore volume of 715.80 m2/g and 0.47 cm3/g respectively. FTIR and XRD proved that ACRPSAC was largely amorphous and had sufficient functionality for fluoride uptake in solution. Batch adsorption studies showed that the fluoride removal abilities were in the order of ACRPSAC > RPSAC > CAC with maximum Langmuir adsorption capacity of 4.10 > 2.26 > 2.24 mg/g. respectively. The experimental data was well described by the Langmuir (R2 = 0.8802–0.9751) and the pseudo-second order kinetic (R2 = 0.9974–0.9999) models, signifying that fluoride uptake by the adsorbents was a chemisorption process. Thermodynamic studies revealed that the process was spontaneous, endothermic and feasible for ACRPSAC and RPSAC but was non-spontaneous for CAC. It was concluded that ACRPSAC is an excellent activated carbon for eliminating fluoride from groundwater and can be further studied for its commercialization.
format	article
author	Raphael T. Iwar Oliver T. Iorhemen Kola' Ogedengbe Kamil Kayode Katibi
author_facet	Raphael T. Iwar Oliver T. Iorhemen Kola' Ogedengbe Kamil Kayode Katibi
author_sort	Raphael T. Iwar
title	Novel aluminium (hydr) oxide-functionalized activated carbon derived from Raffia palm (Raphia hookeri) shells: Augmentation of its adsorptive properties for efficient fluoride uptake in aqueous media
title_short	Novel aluminium (hydr) oxide-functionalized activated carbon derived from Raffia palm (Raphia hookeri) shells: Augmentation of its adsorptive properties for efficient fluoride uptake in aqueous media
title_full	Novel aluminium (hydr) oxide-functionalized activated carbon derived from Raffia palm (Raphia hookeri) shells: Augmentation of its adsorptive properties for efficient fluoride uptake in aqueous media
title_fullStr	Novel aluminium (hydr) oxide-functionalized activated carbon derived from Raffia palm (Raphia hookeri) shells: Augmentation of its adsorptive properties for efficient fluoride uptake in aqueous media
title_full_unstemmed	Novel aluminium (hydr) oxide-functionalized activated carbon derived from Raffia palm (Raphia hookeri) shells: Augmentation of its adsorptive properties for efficient fluoride uptake in aqueous media
title_sort	novel aluminium (hydr) oxide-functionalized activated carbon derived from raffia palm (raphia hookeri) shells: augmentation of its adsorptive properties for efficient fluoride uptake in aqueous media
publisher	KeAi Communications Co., Ltd.
publishDate	2021
url	https://doaj.org/article/b9e852f575fe4f8684257e8511a53813
work_keys_str_mv	AT raphaeltiwar novelaluminiumhydroxidefunctionalizedactivatedcarbonderivedfromraffiapalmraphiahookerishellsaugmentationofitsadsorptivepropertiesforefficientfluorideuptakeinaqueousmedia AT olivertiorhemen novelaluminiumhydroxidefunctionalizedactivatedcarbonderivedfromraffiapalmraphiahookerishellsaugmentationofitsadsorptivepropertiesforefficientfluorideuptakeinaqueousmedia AT kolaogedengbe novelaluminiumhydroxidefunctionalizedactivatedcarbonderivedfromraffiapalmraphiahookerishellsaugmentationofitsadsorptivepropertiesforefficientfluorideuptakeinaqueousmedia AT kamilkayodekatibi novelaluminiumhydroxidefunctionalizedactivatedcarbonderivedfromraffiapalmraphiahookerishellsaugmentationofitsadsorptivepropertiesforefficientfluorideuptakeinaqueousmedia
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Novel aluminium (hydr) oxide-functionalized activated carbon derived from Raffia palm (Raphia hookeri) shells: Augmentation of its adsorptive properties for efficient fluoride uptake in aqueous media

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