A new approach to chemical modification protocols of Aspergillus niger and sorption of lead ion by fungal species

Biomasses of five fungi species (Aspergillus niger, Penicillium austurianum, Saccharomyces cerevisiae, Mucor arcindloides and Trichoderma reesi were evaluated for their uptake of lead ion from aqueous solution using batch systems. Both dead and live fungal biomasses were comparatively studied for th...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Rafiu Awofolu,Omotayo, Okechukwu Okonkwo,Jonathan, Roux-Van Der Merwe,Renate, Badenhorst,Jackie, Jordaan,Erika
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2006
Materias:	Aspergillus niger fungi species lead ion modification sorption
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000400001
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-34582006000400001
record_format	dspace
spelling	oai:scielo:S0717-345820060004000012007-01-12A new approach to chemical modification protocols of Aspergillus niger and sorption of lead ion by fungal speciesRafiu Awofolu,OmotayoOkechukwu Okonkwo,JonathanRoux-Van Der Merwe,RenateBadenhorst,JackieJordaan,Erika Aspergillus niger fungi species lead ion modification sorption Biomasses of five fungi species (Aspergillus niger, Penicillium austurianum, Saccharomyces cerevisiae, Mucor arcindloides and Trichoderma reesi were evaluated for their uptake of lead ion from aqueous solution using batch systems. Both dead and live fungal biomasses were comparatively studied for their adsorption efficiencies. The effect of pH as one of the primary factors that influences sorption efficiency of metal ions in solution was also studied. Modification of the fungal biomass with the least sorption capacity was carried out using a four-step procedure. Three different modifying agents under the optimised experimental conditions were used. The percentage uptake of lead ion by fungi species ranged from: Aspergillus niger: 6.71-64.95% and 66.91-95.27%; Penicillium austurianum: 44.47-98.85% and 75.57-94.21%; Saccharomyces cerevisiae: 52.61-88.68% and 61.20-89.95%; Mucor arcindloides: 83.78-93.13% and 62.91-97.65% and Trichoderma reesi: 52.52-80.70% and 35.31-88.13% for dead and live biomass respectively. The influence of pH on metal uptake was evaluated at pH of 2, 4, 6 and 7. A regular pattern of sorption efficiency among the dead fungi species with respect to pH was observed and the % adsorption decreased in the order pH 7 > 2 > 6 > 4 with the exception of Mucor (pH 7 > 2 > 4 > 6). Modified biomass of Aspergillus niger with oxalic acid, malic acid and ethylenediamine tetraacetic acid (EDTA) recorded 92.84%, 48.11% and 39.83% uptake of Pb respectively which correspond to 69.65%, 41.23% and 29.25% increase when compared to 28.18% of the unmodified biomass. These quantitative adsorptions demonstrate the potential application of modified biomass for the removal of Pb ion from aqueous solution.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.9 n.4 20062006-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000400001en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Aspergillus niger fungi species lead ion modification sorption
spellingShingle	Aspergillus niger fungi species lead ion modification sorption Rafiu Awofolu,Omotayo Okechukwu Okonkwo,Jonathan Roux-Van Der Merwe,Renate Badenhorst,Jackie Jordaan,Erika A new approach to chemical modification protocols of Aspergillus niger and sorption of lead ion by fungal species
description	Biomasses of five fungi species (Aspergillus niger, Penicillium austurianum, Saccharomyces cerevisiae, Mucor arcindloides and Trichoderma reesi were evaluated for their uptake of lead ion from aqueous solution using batch systems. Both dead and live fungal biomasses were comparatively studied for their adsorption efficiencies. The effect of pH as one of the primary factors that influences sorption efficiency of metal ions in solution was also studied. Modification of the fungal biomass with the least sorption capacity was carried out using a four-step procedure. Three different modifying agents under the optimised experimental conditions were used. The percentage uptake of lead ion by fungi species ranged from: Aspergillus niger: 6.71-64.95% and 66.91-95.27%; Penicillium austurianum: 44.47-98.85% and 75.57-94.21%; Saccharomyces cerevisiae: 52.61-88.68% and 61.20-89.95%; Mucor arcindloides: 83.78-93.13% and 62.91-97.65% and Trichoderma reesi: 52.52-80.70% and 35.31-88.13% for dead and live biomass respectively. The influence of pH on metal uptake was evaluated at pH of 2, 4, 6 and 7. A regular pattern of sorption efficiency among the dead fungi species with respect to pH was observed and the % adsorption decreased in the order pH 7 > 2 > 6 > 4 with the exception of Mucor (pH 7 > 2 > 4 > 6). Modified biomass of Aspergillus niger with oxalic acid, malic acid and ethylenediamine tetraacetic acid (EDTA) recorded 92.84%, 48.11% and 39.83% uptake of Pb respectively which correspond to 69.65%, 41.23% and 29.25% increase when compared to 28.18% of the unmodified biomass. These quantitative adsorptions demonstrate the potential application of modified biomass for the removal of Pb ion from aqueous solution.
author	Rafiu Awofolu,Omotayo Okechukwu Okonkwo,Jonathan Roux-Van Der Merwe,Renate Badenhorst,Jackie Jordaan,Erika
author_facet	Rafiu Awofolu,Omotayo Okechukwu Okonkwo,Jonathan Roux-Van Der Merwe,Renate Badenhorst,Jackie Jordaan,Erika
author_sort	Rafiu Awofolu,Omotayo
title	A new approach to chemical modification protocols of Aspergillus niger and sorption of lead ion by fungal species
title_short	A new approach to chemical modification protocols of Aspergillus niger and sorption of lead ion by fungal species
title_full	A new approach to chemical modification protocols of Aspergillus niger and sorption of lead ion by fungal species
title_fullStr	A new approach to chemical modification protocols of Aspergillus niger and sorption of lead ion by fungal species
title_full_unstemmed	A new approach to chemical modification protocols of Aspergillus niger and sorption of lead ion by fungal species
title_sort	new approach to chemical modification protocols of aspergillus niger and sorption of lead ion by fungal species
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2006
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000400001
work_keys_str_mv	AT rafiuawofoluomotayo anewapproachtochemicalmodificationprotocolsofaspergillusnigerandsorptionofleadionbyfungalspecies AT okechukwuokonkwojonathan anewapproachtochemicalmodificationprotocolsofaspergillusnigerandsorptionofleadionbyfungalspecies AT rouxvandermerwerenate anewapproachtochemicalmodificationprotocolsofaspergillusnigerandsorptionofleadionbyfungalspecies AT badenhorstjackie anewapproachtochemicalmodificationprotocolsofaspergillusnigerandsorptionofleadionbyfungalspecies AT jordaanerika anewapproachtochemicalmodificationprotocolsofaspergillusnigerandsorptionofleadionbyfungalspecies AT rafiuawofoluomotayo newapproachtochemicalmodificationprotocolsofaspergillusnigerandsorptionofleadionbyfungalspecies AT okechukwuokonkwojonathan newapproachtochemicalmodificationprotocolsofaspergillusnigerandsorptionofleadionbyfungalspecies AT rouxvandermerwerenate newapproachtochemicalmodificationprotocolsofaspergillusnigerandsorptionofleadionbyfungalspecies AT badenhorstjackie newapproachtochemicalmodificationprotocolsofaspergillusnigerandsorptionofleadionbyfungalspecies AT jordaanerika newapproachtochemicalmodificationprotocolsofaspergillusnigerandsorptionofleadionbyfungalspecies
_version_	1718441752821497856

A new approach to chemical modification protocols of Aspergillus niger and sorption of lead ion by fungal species

Ejemplares similares