Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes

Adsorption of direct red 80 (DR 80) and methylene blue (MB) from aqueous solutions on potato peels (PP) has been compared. The use of peels in decontamination technology is very promising given the near zero-cost for the synthesis of those adsorbents. The selected potato peels were first analyzed by...

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Autores principales:	Khawla Ben Jeddou, Fatma Bouaziz, Fadia Ben Taheur, Oumèma Nouri-Ellouz, Raoudha Ellouz-Ghorbel, Semia Ellouz-Chaabouni
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption isotherm dye adsorption potato waste water treatment Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/233a148891044f28a29cffe97ea70f18
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spelling	oai:doaj.org-article:233a148891044f28a29cffe97ea70f182021-11-06T10:52:34ZAdsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes0273-12231996-973210.2166/wst.2021.075https://doaj.org/article/233a148891044f28a29cffe97ea70f182021-03-01T00:00:00Zhttp://wst.iwaponline.com/content/83/6/1384https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Adsorption of direct red 80 (DR 80) and methylene blue (MB) from aqueous solutions on potato peels (PP) has been compared. The use of peels in decontamination technology is very promising given the near zero-cost for the synthesis of those adsorbents. The selected potato peels were first analyzed by scanning using electron microscopy (SEM) and Fourier transforms infrared spectroscopy (FTIR). Then the adsorption behavior was studied in a batch system. The adsorption process is affected by various parameters such as the solution pH (2–11), the initial concentration of the dye (20, 50, 100, 150 and 200 mg L−1), the adsorbent dose (0.1–3%), the temperature (303.16 K, 313.16 K, and 323.16 K), agitation (up to 250 rpm), as well as the contact time. Adsorption isotherms of the studied dye on the adsorbent were determined and compared with the Langmiur, Freundlich and Temkin adsorption models. The results show that the data was most similar to the Freundlich isotherm (R2 = 0.99). The maximum adsorption capacities (Qmax) of MB and DR 80 by the PP at temperatures 303.16 K, 313.16 K and 323.16 K were found to be approximately 97.08 mg g−1; 45.87 mg g−1; 61.35 mg g−1 and 27.778 mg g−1; 45.45 mg g−1; and 32.258 mg g−1. The kinetic data was compared to the pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. This revealed that adsorption of methylene blue onto PP abided mostly to the pseudo-second-order kinetic model. Calculations of various thermodynamic parameters such as enthalpy change (ΔH), entropy change (ΔS), and free energy change (ΔG) display the endothermic and spontaneous nature of the adsorption process. HIGHLIGHTS The potato peels waste (PP) was used as adsorbent for the removal of methylene blue (MB) and direct red 80 (DR 80).; PP can efficiently adsorb high amounts of cationic and anionic dyes from water.; The adsorption isotherm data were fitted well to Freundlich isotherm.; The adsorption kinetics described well by the pseudo-second-order model.; The adsorption of DR80 and MB was spontaneous and endothermic.;Khawla Ben JeddouFatma BouazizFadia Ben TaheurOumèma Nouri-EllouzRaoudha Ellouz-GhorbelSemia Ellouz-ChaabouniIWA Publishingarticleadsorption isothermdye adsorptionpotato wastewater treatmentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 6, Pp 1384-1398 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption isotherm dye adsorption potato waste water treatment Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption isotherm dye adsorption potato waste water treatment Environmental technology. Sanitary engineering TD1-1066 Khawla Ben Jeddou Fatma Bouaziz Fadia Ben Taheur Oumèma Nouri-Ellouz Raoudha Ellouz-Ghorbel Semia Ellouz-Chaabouni Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes
description	Adsorption of direct red 80 (DR 80) and methylene blue (MB) from aqueous solutions on potato peels (PP) has been compared. The use of peels in decontamination technology is very promising given the near zero-cost for the synthesis of those adsorbents. The selected potato peels were first analyzed by scanning using electron microscopy (SEM) and Fourier transforms infrared spectroscopy (FTIR). Then the adsorption behavior was studied in a batch system. The adsorption process is affected by various parameters such as the solution pH (2–11), the initial concentration of the dye (20, 50, 100, 150 and 200 mg L−1), the adsorbent dose (0.1–3%), the temperature (303.16 K, 313.16 K, and 323.16 K), agitation (up to 250 rpm), as well as the contact time. Adsorption isotherms of the studied dye on the adsorbent were determined and compared with the Langmiur, Freundlich and Temkin adsorption models. The results show that the data was most similar to the Freundlich isotherm (R2 = 0.99). The maximum adsorption capacities (Qmax) of MB and DR 80 by the PP at temperatures 303.16 K, 313.16 K and 323.16 K were found to be approximately 97.08 mg g−1; 45.87 mg g−1; 61.35 mg g−1 and 27.778 mg g−1; 45.45 mg g−1; and 32.258 mg g−1. The kinetic data was compared to the pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. This revealed that adsorption of methylene blue onto PP abided mostly to the pseudo-second-order kinetic model. Calculations of various thermodynamic parameters such as enthalpy change (ΔH), entropy change (ΔS), and free energy change (ΔG) display the endothermic and spontaneous nature of the adsorption process. HIGHLIGHTS The potato peels waste (PP) was used as adsorbent for the removal of methylene blue (MB) and direct red 80 (DR 80).; PP can efficiently adsorb high amounts of cationic and anionic dyes from water.; The adsorption isotherm data were fitted well to Freundlich isotherm.; The adsorption kinetics described well by the pseudo-second-order model.; The adsorption of DR80 and MB was spontaneous and endothermic.;
format	article
author	Khawla Ben Jeddou Fatma Bouaziz Fadia Ben Taheur Oumèma Nouri-Ellouz Raoudha Ellouz-Ghorbel Semia Ellouz-Chaabouni
author_facet	Khawla Ben Jeddou Fatma Bouaziz Fadia Ben Taheur Oumèma Nouri-Ellouz Raoudha Ellouz-Ghorbel Semia Ellouz-Chaabouni
author_sort	Khawla Ben Jeddou
title	Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes
title_short	Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes
title_full	Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes
title_fullStr	Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes
title_full_unstemmed	Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes
title_sort	adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/233a148891044f28a29cffe97ea70f18
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Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes

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