Adsorption of Estradiol from aqueous solution by hydrothermally carbonized and steam activated palm kernel shells

In this study, Ethinylestradiol was removed from aqueous solution (maximum removal 83.1%) by hydrothermally carbonized and steam activated carbon adsorbent prepared from palm kernel shells. The effects of varying adsorbent mass, pH, temperature and concentration of Ethinylestradiol on adsorption wer...

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Autores principales:	Kimbi Yaah Velma Beri, Danns Pereira Barbosa, Mohamed Zbair, Satu Ojala, Sergio Botelho de Oliveira
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Adsorption Hydrothermal carbonization Ethinylestradiol Characterization Palm kernel shells Renewable energy sources TJ807-830 Agriculture (General) S1-972
Acceso en línea:	https://doaj.org/article/2768fae5c7184936a1573f53da2632c5
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spelling	oai:doaj.org-article:2768fae5c7184936a1573f53da2632c52021-12-02T05:04:51ZAdsorption of Estradiol from aqueous solution by hydrothermally carbonized and steam activated palm kernel shells2772-427110.1016/j.nexus.2021.100009https://doaj.org/article/2768fae5c7184936a1573f53da2632c52021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2772427121000097https://doaj.org/toc/2772-4271In this study, Ethinylestradiol was removed from aqueous solution (maximum removal 83.1%) by hydrothermally carbonized and steam activated carbon adsorbent prepared from palm kernel shells. The effects of varying adsorbent mass, pH, temperature and concentration of Ethinylestradiol on adsorption were studied. It was found that pseudo second order kinetic model is able to describe well the adsorption of Ethinylestradiol. Thermodynamic studies showed that the adsorption process was mainly chemisorption as the calculated activation energy for adsorption was 60.4 KJmol−1. Adsorption was considered to take place between the functional groups on the adsorbent and those on the Ethinylestradiol molecule. The characterization showed that adsorbent was mesoporous with specific surface area of 320 m2g−1, it had several oxygen-containing functional groups, and defects in its graphitic structure (ID/IG ratio ∼ 2.2).Novelty statement: High carbonization temperatures (300°C - 600°C) followed by high-temperature steam activation (600°C - 1000°C) have been used to prepare carbon adsorbents over the past decades. In this work, the novelty lies on lower processing temperatures. Hydrothermal carbonization realized at 200°C and following steam activation at 500°C will produce an efficient carbon adsorbent, which is shown in this study. The lower carbonization-activation temperatures produce adsorbents with higher amount of functional groups beneficial to adsorption, and decreases energy costs of the production.Kimbi Yaah Velma BeriDanns Pereira BarbosaMohamed ZbairSatu OjalaSergio Botelho de OliveiraElsevierarticleAdsorptionHydrothermal carbonizationEthinylestradiolCharacterizationPalm kernel shellsRenewable energy sourcesTJ807-830Agriculture (General)S1-972ENEnergy Nexus, Vol 1, Iss , Pp 100009- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Adsorption Hydrothermal carbonization Ethinylestradiol Characterization Palm kernel shells Renewable energy sources TJ807-830 Agriculture (General) S1-972
spellingShingle	Adsorption Hydrothermal carbonization Ethinylestradiol Characterization Palm kernel shells Renewable energy sources TJ807-830 Agriculture (General) S1-972 Kimbi Yaah Velma Beri Danns Pereira Barbosa Mohamed Zbair Satu Ojala Sergio Botelho de Oliveira Adsorption of Estradiol from aqueous solution by hydrothermally carbonized and steam activated palm kernel shells
description	In this study, Ethinylestradiol was removed from aqueous solution (maximum removal 83.1%) by hydrothermally carbonized and steam activated carbon adsorbent prepared from palm kernel shells. The effects of varying adsorbent mass, pH, temperature and concentration of Ethinylestradiol on adsorption were studied. It was found that pseudo second order kinetic model is able to describe well the adsorption of Ethinylestradiol. Thermodynamic studies showed that the adsorption process was mainly chemisorption as the calculated activation energy for adsorption was 60.4 KJmol−1. Adsorption was considered to take place between the functional groups on the adsorbent and those on the Ethinylestradiol molecule. The characterization showed that adsorbent was mesoporous with specific surface area of 320 m2g−1, it had several oxygen-containing functional groups, and defects in its graphitic structure (ID/IG ratio ∼ 2.2).Novelty statement: High carbonization temperatures (300°C - 600°C) followed by high-temperature steam activation (600°C - 1000°C) have been used to prepare carbon adsorbents over the past decades. In this work, the novelty lies on lower processing temperatures. Hydrothermal carbonization realized at 200°C and following steam activation at 500°C will produce an efficient carbon adsorbent, which is shown in this study. The lower carbonization-activation temperatures produce adsorbents with higher amount of functional groups beneficial to adsorption, and decreases energy costs of the production.
format	article
author	Kimbi Yaah Velma Beri Danns Pereira Barbosa Mohamed Zbair Satu Ojala Sergio Botelho de Oliveira
author_facet	Kimbi Yaah Velma Beri Danns Pereira Barbosa Mohamed Zbair Satu Ojala Sergio Botelho de Oliveira
author_sort	Kimbi Yaah Velma Beri
title	Adsorption of Estradiol from aqueous solution by hydrothermally carbonized and steam activated palm kernel shells
title_short	Adsorption of Estradiol from aqueous solution by hydrothermally carbonized and steam activated palm kernel shells
title_full	Adsorption of Estradiol from aqueous solution by hydrothermally carbonized and steam activated palm kernel shells
title_fullStr	Adsorption of Estradiol from aqueous solution by hydrothermally carbonized and steam activated palm kernel shells
title_full_unstemmed	Adsorption of Estradiol from aqueous solution by hydrothermally carbonized and steam activated palm kernel shells
title_sort	adsorption of estradiol from aqueous solution by hydrothermally carbonized and steam activated palm kernel shells
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/2768fae5c7184936a1573f53da2632c5
work_keys_str_mv	AT kimbiyaahvelmaberi adsorptionofestradiolfromaqueoussolutionbyhydrothermallycarbonizedandsteamactivatedpalmkernelshells AT dannspereirabarbosa adsorptionofestradiolfromaqueoussolutionbyhydrothermallycarbonizedandsteamactivatedpalmkernelshells AT mohamedzbair adsorptionofestradiolfromaqueoussolutionbyhydrothermallycarbonizedandsteamactivatedpalmkernelshells AT satuojala adsorptionofestradiolfromaqueoussolutionbyhydrothermallycarbonizedandsteamactivatedpalmkernelshells AT sergiobotelhodeoliveira adsorptionofestradiolfromaqueoussolutionbyhydrothermallycarbonizedandsteamactivatedpalmkernelshells
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Adsorption of Estradiol from aqueous solution by hydrothermally carbonized and steam activated palm kernel shells

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