Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds

In order to determine whether waters used for the shrimp cultivation contained toxic levels of heavy metals (HMs) and sodium (Na), analysis was carried out on 31 shrimp ponds in areas of southern Thailand. Purple nonsulfur bacteria (PNB) were also isolated from the same ponds to investigate if they...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Panwichian,Saijai, Kantachote,Duangporn, Wittayaweerasak,Banjong, Mallavarapu,Megharaj
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2010
Materias:	bioremediation heavy metals purple nonsulfur bacteria salinity shrimp farming
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000400003
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-34582010000400003
record_format	dspace
spelling	oai:scielo:S0717-345820100004000032010-08-04Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp pondsPanwichian,SaijaiKantachote,DuangpornWittayaweerasak,BanjongMallavarapu,Megharaj bioremediation heavy metals purple nonsulfur bacteria salinity shrimp farming In order to determine whether waters used for the shrimp cultivation contained toxic levels of heavy metals (HMs) and sodium (Na), analysis was carried out on 31 shrimp ponds in areas of southern Thailand. Purple nonsulfur bacteria (PNB) were also isolated from the same ponds to investigate if they could be used for bioremediation of the above contaminants. The highest HMs concentrations of the sediment samples in mg/kg dry weight were found as follows: 0.75 cadmium (Cd), 62.63 lead (Pb), 34.60 copper (Cu) and 58.50 zinc (Zn). However, all sediment samples met Hong Kong standards for dredged sediment. In contrast, contamination of Cu (9-30 µg/L) and Zn (140-530 µg/L) exceeding the standard guidelines for marine aquatic animal set by the Pollution Control Department, Thailand, were found in 32 and 61% of water samples, respectively. Two metal resistant PNB isolates, NW16 and KMS24, were selected from the 120 PNB isolates obtained. Both isolates reduced the levels of HMs by up to 39% for Pb, 20% for Cu, 7% for Cd, 5% for Zn and 31% for Na from water that contained the highest levels of HMs found and 3% NaCl when cultured with either microaerobic-light or aerobic-dark conditions. The isolate NW16 removed a greater percentage of the HMs than the isolate KMS24, but the isolate KMS24 was able to survive better under a greater variety of environmental conditions. Both strains were therefore suitable to use for further investigating their abilities to remediate water contaminated with HMs and Na.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.13 n.4 20102010-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000400003en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	bioremediation heavy metals purple nonsulfur bacteria salinity shrimp farming
spellingShingle	bioremediation heavy metals purple nonsulfur bacteria salinity shrimp farming Panwichian,Saijai Kantachote,Duangporn Wittayaweerasak,Banjong Mallavarapu,Megharaj Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds
description	In order to determine whether waters used for the shrimp cultivation contained toxic levels of heavy metals (HMs) and sodium (Na), analysis was carried out on 31 shrimp ponds in areas of southern Thailand. Purple nonsulfur bacteria (PNB) were also isolated from the same ponds to investigate if they could be used for bioremediation of the above contaminants. The highest HMs concentrations of the sediment samples in mg/kg dry weight were found as follows: 0.75 cadmium (Cd), 62.63 lead (Pb), 34.60 copper (Cu) and 58.50 zinc (Zn). However, all sediment samples met Hong Kong standards for dredged sediment. In contrast, contamination of Cu (9-30 µg/L) and Zn (140-530 µg/L) exceeding the standard guidelines for marine aquatic animal set by the Pollution Control Department, Thailand, were found in 32 and 61% of water samples, respectively. Two metal resistant PNB isolates, NW16 and KMS24, were selected from the 120 PNB isolates obtained. Both isolates reduced the levels of HMs by up to 39% for Pb, 20% for Cu, 7% for Cd, 5% for Zn and 31% for Na from water that contained the highest levels of HMs found and 3% NaCl when cultured with either microaerobic-light or aerobic-dark conditions. The isolate NW16 removed a greater percentage of the HMs than the isolate KMS24, but the isolate KMS24 was able to survive better under a greater variety of environmental conditions. Both strains were therefore suitable to use for further investigating their abilities to remediate water contaminated with HMs and Na.
author	Panwichian,Saijai Kantachote,Duangporn Wittayaweerasak,Banjong Mallavarapu,Megharaj
author_facet	Panwichian,Saijai Kantachote,Duangporn Wittayaweerasak,Banjong Mallavarapu,Megharaj
author_sort	Panwichian,Saijai
title	Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds
title_short	Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds
title_full	Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds
title_fullStr	Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds
title_full_unstemmed	Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds
title_sort	isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000400003
work_keys_str_mv	AT panwichiansaijai isolationofpurplenonsulfurbacteriafortheremovalofheavymetalsandsodiumfromcontaminatedshrimpponds AT kantachoteduangporn isolationofpurplenonsulfurbacteriafortheremovalofheavymetalsandsodiumfromcontaminatedshrimpponds AT wittayaweerasakbanjong isolationofpurplenonsulfurbacteriafortheremovalofheavymetalsandsodiumfromcontaminatedshrimpponds AT mallavarapumegharaj isolationofpurplenonsulfurbacteriafortheremovalofheavymetalsandsodiumfromcontaminatedshrimpponds
_version_	1718441816717524992

Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds

Ejemplares similares