3,5-Dinitrosalicylic Acid Adsorption Using Granulated and Powdered Activated Carbons

Some nitroaromatic compounds are found in wastewater from industries such as the weapons industry or the wine industry. One of these compounds is 3,5-dinitrosalicylic acid (DNS), widely used in various tests and frequently found as an emerging pollutant in wastewater and to which the required attent...

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Autores principales:	José A. Hernández, Laura Patiño-Saldivar, Alba Ardila, Mercedes Salazar-Hernández, Alfonso Talavera, Rosa Hernández-Soto
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	DNS nitroaromatic compounds removal equilibrium mass transfer Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/918bcf280b49492fb6708691229586d7
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spelling	oai:doaj.org-article:918bcf280b49492fb6708691229586d72021-11-25T18:28:26Z3,5-Dinitrosalicylic Acid Adsorption Using Granulated and Powdered Activated Carbons10.3390/molecules262269181420-3049https://doaj.org/article/918bcf280b49492fb6708691229586d72021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/22/6918https://doaj.org/toc/1420-3049Some nitroaromatic compounds are found in wastewater from industries such as the weapons industry or the wine industry. One of these compounds is 3,5-dinitrosalicylic acid (DNS), widely used in various tests and frequently found as an emerging pollutant in wastewater and to which the required attention has not been given, even though it may cause serious diseases due to its high toxicity. This study investigated the adsorption of DNS using granulated activated carbon (GAC) and powdered activated carbon (PAC) at different temperatures. The results show that in equilibrium, the adsorption takes place in more than one layer and is favorable for the removal of DNS in both GAC and PAC; The maximum adsorption capacity was obtained at 45 °C, with values of 6.97 mg/g and 11.57 mg/g, respectively. The process is spontaneous and exothermic. In addition, there was a greater disorder in the solid-liquid interface during the desorption process. The predominant kinetics using GAC (7.14 mg/g) as an adsorbent is Elovich, indicating that there are heterogeneous active sites, and when PAC (10.72 mg/g) is used, Pseudo-second order kinetics predominate, requiring two active sites for DNS removal. External mass transfer limitations are only significant in GAC, and ATR-FTIR studies in PAC demonstrated the participation of functional groups present on the adsorbent surface for DNS adsorption.José A. HernándezLaura Patiño-SaldivarAlba ArdilaMercedes Salazar-HernándezAlfonso TalaveraRosa Hernández-SotoMDPI AGarticleDNSnitroaromatic compoundsremovalequilibriummass transferOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6918, p 6918 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	DNS nitroaromatic compounds removal equilibrium mass transfer Organic chemistry QD241-441
spellingShingle	DNS nitroaromatic compounds removal equilibrium mass transfer Organic chemistry QD241-441 José A. Hernández Laura Patiño-Saldivar Alba Ardila Mercedes Salazar-Hernández Alfonso Talavera Rosa Hernández-Soto 3,5-Dinitrosalicylic Acid Adsorption Using Granulated and Powdered Activated Carbons
description	Some nitroaromatic compounds are found in wastewater from industries such as the weapons industry or the wine industry. One of these compounds is 3,5-dinitrosalicylic acid (DNS), widely used in various tests and frequently found as an emerging pollutant in wastewater and to which the required attention has not been given, even though it may cause serious diseases due to its high toxicity. This study investigated the adsorption of DNS using granulated activated carbon (GAC) and powdered activated carbon (PAC) at different temperatures. The results show that in equilibrium, the adsorption takes place in more than one layer and is favorable for the removal of DNS in both GAC and PAC; The maximum adsorption capacity was obtained at 45 °C, with values of 6.97 mg/g and 11.57 mg/g, respectively. The process is spontaneous and exothermic. In addition, there was a greater disorder in the solid-liquid interface during the desorption process. The predominant kinetics using GAC (7.14 mg/g) as an adsorbent is Elovich, indicating that there are heterogeneous active sites, and when PAC (10.72 mg/g) is used, Pseudo-second order kinetics predominate, requiring two active sites for DNS removal. External mass transfer limitations are only significant in GAC, and ATR-FTIR studies in PAC demonstrated the participation of functional groups present on the adsorbent surface for DNS adsorption.
format	article
author	José A. Hernández Laura Patiño-Saldivar Alba Ardila Mercedes Salazar-Hernández Alfonso Talavera Rosa Hernández-Soto
author_facet	José A. Hernández Laura Patiño-Saldivar Alba Ardila Mercedes Salazar-Hernández Alfonso Talavera Rosa Hernández-Soto
author_sort	José A. Hernández
title	3,5-Dinitrosalicylic Acid Adsorption Using Granulated and Powdered Activated Carbons
title_short	3,5-Dinitrosalicylic Acid Adsorption Using Granulated and Powdered Activated Carbons
title_full	3,5-Dinitrosalicylic Acid Adsorption Using Granulated and Powdered Activated Carbons
title_fullStr	3,5-Dinitrosalicylic Acid Adsorption Using Granulated and Powdered Activated Carbons
title_full_unstemmed	3,5-Dinitrosalicylic Acid Adsorption Using Granulated and Powdered Activated Carbons
title_sort	3,5-dinitrosalicylic acid adsorption using granulated and powdered activated carbons
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/918bcf280b49492fb6708691229586d7
work_keys_str_mv	AT joseahernandez 35dinitrosalicylicacidadsorptionusinggranulatedandpowderedactivatedcarbons AT laurapatinosaldivar 35dinitrosalicylicacidadsorptionusinggranulatedandpowderedactivatedcarbons AT albaardila 35dinitrosalicylicacidadsorptionusinggranulatedandpowderedactivatedcarbons AT mercedessalazarhernandez 35dinitrosalicylicacidadsorptionusinggranulatedandpowderedactivatedcarbons AT alfonsotalavera 35dinitrosalicylicacidadsorptionusinggranulatedandpowderedactivatedcarbons AT rosahernandezsoto 35dinitrosalicylicacidadsorptionusinggranulatedandpowderedactivatedcarbons
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3,5-Dinitrosalicylic Acid Adsorption Using Granulated and Powdered Activated Carbons

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