Abstract:
:Microalga biomass has been described worldwide according their capacity to realize biosorption of toxic metals. Chromium is one of the most toxic metals that could contaminate superficial and underground water. Considering the importance of Spirulina biomass in production of supplements for humans and for animal feed we assessed the biosorption of hexavalent chromium by living Spirulina platensis and its capacity to convert hexavalent chromium to trivalent chromium, less toxic, through its metabolism during growth. The active biomass was grown in Zarrouk medium diluted to 50% with distilled water, keeping the experiments under controlled conditions of aeration, temperature of 30°C and lighting of 1,800 lux. Hexavalent chromium was added using a potassium dichromate solution in fed-batch mode with the aim of evaluate the effect of several additions contaminant in the kinetic parameters of the culture. Cell growth was affected by the presence of chromium added at the beginning of cultures, and the best growth rates were obtained at lower metal concentrations in the medium. The biomass removed until 65.2% of hexavalent chromium added to the media, being 90.4% converted into trivalent chromium in the media and 9.6% retained in the biomass as trivalent chromium (0.931 mg.g(-1)).
journal_name
Int J Phytoremediationjournal_title
International journal of phytoremediationauthors
Colla LM,Dal'Magro C,De Rossi A,Thomé A,Reinehr CO,Bertolin TE,Costa JAdoi
10.1080/15226514.2014.964846subject
Has Abstractpub_date
2015-01-01 00:00:00pages
861-8issue
9eissn
1522-6514issn
1549-7879journal_volume
17pub_type
杂志文章abstract::According to the characteristics of the reverse osmosis concentrate (ROC) generated from iron and steel company, we used three sets of parallel horizontal subsurface flow (HSF) constructed wetlands (CWs) with different plants and substrate layouts to treat the high-salinity wastewater. The plant growth and removal eff...
journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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doi:10.1080/15226514.2013.876965
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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doi:10.1080/15226514.2017.1301877
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journal_title:International journal of phytoremediation
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doi:10.1080/15226514.2015.1045127
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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doi:10.1080/15226514.2015.1109590
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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doi:10.1080/15226514.2011.620655
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journal_title:International journal of phytoremediation
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doi:10.1080/15226514.2012.723062
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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journal_title:International journal of phytoremediation
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