Heavy metal uptake by agro based waste materials

Presence of heavy metals in the aquatic systems has become a serious problem. As a result, there has been a great deal of attention given to new technologies for removal of heavy metal ions from contaminated waters. Biosorption is one such emerging technology which utilized naturally occurring waste...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Qaiser,Suleman, Saleemi,Anwar R, Mahmood Ahmad,Muhammad
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2007
Materias:	biosorption ficus religiosa leaves hexavalent chromium kinetics lead wastewater
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000300008
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-34582007000300008
record_format	dspace
spelling	oai:scielo:S0717-345820070003000082007-11-05Heavy metal uptake by agro based waste materialsQaiser,SulemanSaleemi,Anwar RMahmood Ahmad,Muhammad biosorption ficus religiosa leaves hexavalent chromium kinetics lead wastewater Presence of heavy metals in the aquatic systems has become a serious problem. As a result, there has been a great deal of attention given to new technologies for removal of heavy metal ions from contaminated waters. Biosorption is one such emerging technology which utilized naturally occurring waste materials to sequester heavy metals from industrial wastewater. The aim of the present study was to utilize the locally available agricultural waste materials for heavy metal removal from industrial wastewater. The wastewater containing lead and hexavalent chromium was treated with biomass prepared from ficus religiosa leaves. It was fund that a time of one hr was sufficient for sorption to attain equilibrium. The equilibrium sorption capacity after one hr was 16.95 ± 0.75 mg g-1 and 5.66 ± 0.43 mg g-1 for lead and chromium respectively. The optimum pH was 4 for lead and 1 for chromium. Temperature has strong influence on biosorption process. The removal of lead decreased with increase in temperature. On the other hand chromium removal increased with increase in temperature up to 40ºC and then started decreasing. Ion exchange was the major removal mechanism along with physical sorption and precipitation. The biosorption data was well fitted to Langmuir adsorption model. The kinetics of biosorption process was well described by the pseudo 2nd order kinetics model. It was concluded that adsorbent prepared from ficus religiosa leaves can be utilized for the treatment of heavy metals in wastewaterinfo:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.10 n.3 20072007-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000300008en10.4067/S0717-34582007000300008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	biosorption ficus religiosa leaves hexavalent chromium kinetics lead wastewater
spellingShingle	biosorption ficus religiosa leaves hexavalent chromium kinetics lead wastewater Qaiser,Suleman Saleemi,Anwar R Mahmood Ahmad,Muhammad Heavy metal uptake by agro based waste materials
description	Presence of heavy metals in the aquatic systems has become a serious problem. As a result, there has been a great deal of attention given to new technologies for removal of heavy metal ions from contaminated waters. Biosorption is one such emerging technology which utilized naturally occurring waste materials to sequester heavy metals from industrial wastewater. The aim of the present study was to utilize the locally available agricultural waste materials for heavy metal removal from industrial wastewater. The wastewater containing lead and hexavalent chromium was treated with biomass prepared from ficus religiosa leaves. It was fund that a time of one hr was sufficient for sorption to attain equilibrium. The equilibrium sorption capacity after one hr was 16.95 ± 0.75 mg g-1 and 5.66 ± 0.43 mg g-1 for lead and chromium respectively. The optimum pH was 4 for lead and 1 for chromium. Temperature has strong influence on biosorption process. The removal of lead decreased with increase in temperature. On the other hand chromium removal increased with increase in temperature up to 40ºC and then started decreasing. Ion exchange was the major removal mechanism along with physical sorption and precipitation. The biosorption data was well fitted to Langmuir adsorption model. The kinetics of biosorption process was well described by the pseudo 2nd order kinetics model. It was concluded that adsorbent prepared from ficus religiosa leaves can be utilized for the treatment of heavy metals in wastewater
author	Qaiser,Suleman Saleemi,Anwar R Mahmood Ahmad,Muhammad
author_facet	Qaiser,Suleman Saleemi,Anwar R Mahmood Ahmad,Muhammad
author_sort	Qaiser,Suleman
title	Heavy metal uptake by agro based waste materials
title_short	Heavy metal uptake by agro based waste materials
title_full	Heavy metal uptake by agro based waste materials
title_fullStr	Heavy metal uptake by agro based waste materials
title_full_unstemmed	Heavy metal uptake by agro based waste materials
title_sort	heavy metal uptake by agro based waste materials
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000300008
work_keys_str_mv	AT qaisersuleman heavymetaluptakebyagrobasedwastematerials AT saleemianwarr heavymetaluptakebyagrobasedwastematerials AT mahmoodahmadmuhammad heavymetaluptakebyagrobasedwastematerials
_version_	1718441770874830848

Heavy metal uptake by agro based waste materials

Ejemplares similares