Removal of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots

Dried ground roots of water hyacinth (Eichhornia crassipes) were used for removal of Pb(II) from aqueous solution. Batch adsorption experiments were conducted with the dried roots (0.1 g dry weight) using 100 mg/L of Pb(II) aqueous solution adjusted at pH 5.0. Equilibrium was obtained in 90 min with...

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Autores principales:	Farah Monowara Jahangiri, Hasina Tasmin Moutushi, Md. Moniruzzaman, Sirajul Hoque, Mohammad Enayet Hossain
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption isotherms low-cost biosorbent pseudo-second-order kinetic wastewater water hyacinth roots Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/1857c47ba7534b37a799ef24c90522d1
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spelling	oai:doaj.org-article:1857c47ba7534b37a799ef24c90522d12021-11-05T21:08:53ZRemoval of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots1751-231X10.2166/wpt.2021.005https://doaj.org/article/1857c47ba7534b37a799ef24c90522d12021-04-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/2/404https://doaj.org/toc/1751-231XDried ground roots of water hyacinth (Eichhornia crassipes) were used for removal of Pb(II) from aqueous solution. Batch adsorption experiments were conducted with the dried roots (0.1 g dry weight) using 100 mg/L of Pb(II) aqueous solution adjusted at pH 5.0. Equilibrium was obtained in 90 min with a 92% removal of Pb(II). The effect of contact time, pH, adsorbent dosage, initial metal ion concentration on the adsorption of Pb(II) were also studied. Kinetic studies indicated that the adsorption of Pb(II) followed the pseudo-second-order model with a reaction rate constant (k) of 0.0127 mg/(g.min). Kinetics data conforming to the pseudo-second-order model suggest that chemisorption was the rate-limiting step in the adsorption process. The adsorption data were found to fit best into the Langmuir model (R2 = 0.986). The maximum adsorption capacity was found to be ∼50 mg Pb(II) per g of dried roots. To investigate the feasibility of using the water hyacinth roots in a more realistic situation, wastewaters collected from various sources were also tested with the biosorbent. Significant removal of Pb(II) (∼88% to ∼100%) was observed from the wastewaters at pH 5.0. High adsorption capacity, rapid kinetics, and its low cost make water hyacinth dried roots a good candidate for the removal of Pb(II) from wastewaters. Highlights Lead could be removed from wastewaters using non-living water hyacinth roots as biosorbent.; 92% removal of lead from aqueous solution was achieved within 90 min.; Kinetics indicated that the removal process was controlled by chemisorption.; Langmuir model conformed to the isotherm data, suggesting a monolayer adsorption.; The biosorbent removed ∼88% to ∼100% lead from the real wastewaters.;Farah Monowara JahangiriHasina Tasmin MoutushiMd. MoniruzzamanSirajul HoqueMohammad Enayet HossainIWA Publishingarticleadsorptionisothermslow-cost biosorbentpseudo-second-order kineticwastewaterwater hyacinth rootsEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 2, Pp 404-419 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption isotherms low-cost biosorbent pseudo-second-order kinetic wastewater water hyacinth roots Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption isotherms low-cost biosorbent pseudo-second-order kinetic wastewater water hyacinth roots Environmental technology. Sanitary engineering TD1-1066 Farah Monowara Jahangiri Hasina Tasmin Moutushi Md. Moniruzzaman Sirajul Hoque Mohammad Enayet Hossain Removal of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots
description	Dried ground roots of water hyacinth (Eichhornia crassipes) were used for removal of Pb(II) from aqueous solution. Batch adsorption experiments were conducted with the dried roots (0.1 g dry weight) using 100 mg/L of Pb(II) aqueous solution adjusted at pH 5.0. Equilibrium was obtained in 90 min with a 92% removal of Pb(II). The effect of contact time, pH, adsorbent dosage, initial metal ion concentration on the adsorption of Pb(II) were also studied. Kinetic studies indicated that the adsorption of Pb(II) followed the pseudo-second-order model with a reaction rate constant (k) of 0.0127 mg/(g.min). Kinetics data conforming to the pseudo-second-order model suggest that chemisorption was the rate-limiting step in the adsorption process. The adsorption data were found to fit best into the Langmuir model (R2 = 0.986). The maximum adsorption capacity was found to be ∼50 mg Pb(II) per g of dried roots. To investigate the feasibility of using the water hyacinth roots in a more realistic situation, wastewaters collected from various sources were also tested with the biosorbent. Significant removal of Pb(II) (∼88% to ∼100%) was observed from the wastewaters at pH 5.0. High adsorption capacity, rapid kinetics, and its low cost make water hyacinth dried roots a good candidate for the removal of Pb(II) from wastewaters. Highlights Lead could be removed from wastewaters using non-living water hyacinth roots as biosorbent.; 92% removal of lead from aqueous solution was achieved within 90 min.; Kinetics indicated that the removal process was controlled by chemisorption.; Langmuir model conformed to the isotherm data, suggesting a monolayer adsorption.; The biosorbent removed ∼88% to ∼100% lead from the real wastewaters.;
format	article
author	Farah Monowara Jahangiri Hasina Tasmin Moutushi Md. Moniruzzaman Sirajul Hoque Mohammad Enayet Hossain
author_facet	Farah Monowara Jahangiri Hasina Tasmin Moutushi Md. Moniruzzaman Sirajul Hoque Mohammad Enayet Hossain
author_sort	Farah Monowara Jahangiri
title	Removal of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots
title_short	Removal of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots
title_full	Removal of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots
title_fullStr	Removal of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots
title_full_unstemmed	Removal of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots
title_sort	removal of lead from aqueous solutions and wastewaters using water hyacinth (eichhornia crassipes) roots
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/1857c47ba7534b37a799ef24c90522d1
work_keys_str_mv	AT farahmonowarajahangiri removalofleadfromaqueoussolutionsandwastewatersusingwaterhyacintheichhorniacrassipesroots AT hasinatasminmoutushi removalofleadfromaqueoussolutionsandwastewatersusingwaterhyacintheichhorniacrassipesroots AT mdmoniruzzaman removalofleadfromaqueoussolutionsandwastewatersusingwaterhyacintheichhorniacrassipesroots AT sirajulhoque removalofleadfromaqueoussolutionsandwastewatersusingwaterhyacintheichhorniacrassipesroots AT mohammadenayethossain removalofleadfromaqueoussolutionsandwastewatersusingwaterhyacintheichhorniacrassipesroots
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Removal of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots

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