First investigations on removal of nitrazepam from water using biochar derived from macroalgae low-cost adsorbent: kinetics, isotherms and thermodynamics studies

Emerging contaminants such as pharmaceutical compounds offer potential hazards to the aquatic environment and human health. In this paper, the adsorptive removal of the drug Nitrazepam from water was investigated for the first time using biochar prepared from Sargassum macroalgae. The removal effici...

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Autores principales:	Mazen K. Nazal, Durga Rao, Nabeel Abuzaid
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption isotherms adsorption kinetics pharmaceutical compounds water treatment Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/50d21f53085a442e9fed7923ebddc9e5
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spelling	oai:doaj.org-article:50d21f53085a442e9fed7923ebddc9e52021-11-05T21:14:39ZFirst investigations on removal of nitrazepam from water using biochar derived from macroalgae low-cost adsorbent: kinetics, isotherms and thermodynamics studies1751-231X10.2166/wpt.2021.040https://doaj.org/article/50d21f53085a442e9fed7923ebddc9e52021-07-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/3/946https://doaj.org/toc/1751-231XEmerging contaminants such as pharmaceutical compounds offer potential hazards to the aquatic environment and human health. In this paper, the adsorptive removal of the drug Nitrazepam from water was investigated for the first time using biochar prepared from Sargassum macroalgae. The removal efficiency of Nitrazepam using 1 g/L of Sargassum macroalgae-derived biochar was 98% with a maximum adsorption capacity of 143.12 mg/g. Effects of solution pH, adsorbent mass, adsorbate concentration, contact time and temperature on the removal of Nitrazepam were investigated. Different adsorption isotherms and kinetics were also tested. It was found that the solution pH slightly influenced the removal efficiency. The adsorption data fit the Freundlich isotherm model and the adsorption process of Nitrazepam onto Sargassum macroalgae-derived biochar is spontaneous, endothermic and followed the pseudo-second-order kinetics. Based on this work, it was determined that the low-cost Sargassum macroalgae-derived biochar adsorbent could be a promising adsorbent to remove Nitrazepam from water effectively. Highlights A biochar prepared from macroalgae was investigated for Nitrazepam removal from water.; The adsorbent has high efficiency and adsorption capacity for Nitrazepam emerging contaminant.; The kinetics and thermodynamics of Nitrazepam adsorption were studied.; The adsorption process was spontaneous, endothermic and thermodynamically favorable.; Mixed mechanism was dominated by physisorption and followed pseudo second-order kinetics.;Mazen K. NazalDurga RaoNabeel AbuzaidIWA Publishingarticleadsorption isothermsadsorption kineticspharmaceutical compoundswater treatmentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 3, Pp 946-960 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption isotherms adsorption kinetics pharmaceutical compounds water treatment Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption isotherms adsorption kinetics pharmaceutical compounds water treatment Environmental technology. Sanitary engineering TD1-1066 Mazen K. Nazal Durga Rao Nabeel Abuzaid First investigations on removal of nitrazepam from water using biochar derived from macroalgae low-cost adsorbent: kinetics, isotherms and thermodynamics studies
description	Emerging contaminants such as pharmaceutical compounds offer potential hazards to the aquatic environment and human health. In this paper, the adsorptive removal of the drug Nitrazepam from water was investigated for the first time using biochar prepared from Sargassum macroalgae. The removal efficiency of Nitrazepam using 1 g/L of Sargassum macroalgae-derived biochar was 98% with a maximum adsorption capacity of 143.12 mg/g. Effects of solution pH, adsorbent mass, adsorbate concentration, contact time and temperature on the removal of Nitrazepam were investigated. Different adsorption isotherms and kinetics were also tested. It was found that the solution pH slightly influenced the removal efficiency. The adsorption data fit the Freundlich isotherm model and the adsorption process of Nitrazepam onto Sargassum macroalgae-derived biochar is spontaneous, endothermic and followed the pseudo-second-order kinetics. Based on this work, it was determined that the low-cost Sargassum macroalgae-derived biochar adsorbent could be a promising adsorbent to remove Nitrazepam from water effectively. Highlights A biochar prepared from macroalgae was investigated for Nitrazepam removal from water.; The adsorbent has high efficiency and adsorption capacity for Nitrazepam emerging contaminant.; The kinetics and thermodynamics of Nitrazepam adsorption were studied.; The adsorption process was spontaneous, endothermic and thermodynamically favorable.; Mixed mechanism was dominated by physisorption and followed pseudo second-order kinetics.;
format	article
author	Mazen K. Nazal Durga Rao Nabeel Abuzaid
author_facet	Mazen K. Nazal Durga Rao Nabeel Abuzaid
author_sort	Mazen K. Nazal
title	First investigations on removal of nitrazepam from water using biochar derived from macroalgae low-cost adsorbent: kinetics, isotherms and thermodynamics studies
title_short	First investigations on removal of nitrazepam from water using biochar derived from macroalgae low-cost adsorbent: kinetics, isotherms and thermodynamics studies
title_full	First investigations on removal of nitrazepam from water using biochar derived from macroalgae low-cost adsorbent: kinetics, isotherms and thermodynamics studies
title_fullStr	First investigations on removal of nitrazepam from water using biochar derived from macroalgae low-cost adsorbent: kinetics, isotherms and thermodynamics studies
title_full_unstemmed	First investigations on removal of nitrazepam from water using biochar derived from macroalgae low-cost adsorbent: kinetics, isotherms and thermodynamics studies
title_sort	first investigations on removal of nitrazepam from water using biochar derived from macroalgae low-cost adsorbent: kinetics, isotherms and thermodynamics studies
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/50d21f53085a442e9fed7923ebddc9e5
work_keys_str_mv	AT mazenknazal firstinvestigationsonremovalofnitrazepamfromwaterusingbiocharderivedfrommacroalgaelowcostadsorbentkineticsisothermsandthermodynamicsstudies AT durgarao firstinvestigationsonremovalofnitrazepamfromwaterusingbiocharderivedfrommacroalgaelowcostadsorbentkineticsisothermsandthermodynamicsstudies AT nabeelabuzaid firstinvestigationsonremovalofnitrazepamfromwaterusingbiocharderivedfrommacroalgaelowcostadsorbentkineticsisothermsandthermodynamicsstudies
_version_	1718443979082563584

First investigations on removal of nitrazepam from water using biochar derived from macroalgae low-cost adsorbent: kinetics, isotherms and thermodynamics studies

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