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Removal of Cu(II) and Pb(II) by Pithophora oedogonia: Sorption, desorption and repeated use of the biomass

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Title: Removal of Cu(II) and Pb(II) by Pithophora oedogonia: Sorption, desorption and repeated use of the biomass
Authors: Singh, Alpana1, Kumar, Dhananjay1, Gaur, J.P. gaurjp@yahoo.co.in
Source: Journal of Hazardous Materials. Apr2008, Vol. 152 Issue 3, p1011-1019. 9p.
Subjects: Green algae, Oedogoniaceae, Biomass, Absorption, Copper, Metals, Hazardous substances
Abstract: Abstract: Maximum sorption of Cu(II) and Pb(II) by dried filamentous green alga Pithophora oedogonia occurred at pH 4.5 and 5.0, respectively. Chemical pretreatment could not appreciably enhance the metal sorption ability of the biomass. HCl and EDTA desorbed 92–96% of the sorbed metal from the metal-loaded biomass. Sorption and desorption of both the test metals were very rapid attaining an equilibrium within 15min. The time course data of both the processes fitted well to the pseudo-first and the pseudo-second-order Lagergren kinetic models with r 2 ≥0.979. The isotherm equilibrium of Cu(II) and Pb(II) followed the Redlich-Peterson and Sips model very well with r 2 ≥0.991. The sorption of Cu(II) and Pb(II) at varying biomass doses could be well defined by linear and hyperbolic decrease, respectively. The regenerated biomass of Pithophora has better reusability for Pb(II) than for Cu(II). A good mechanical strength of Pithophora biomass was apparent as only 10–15% loss of biomass occurred at the end of the fifth cycle. [Copyright &y& Elsevier]
Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 31307068
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Removal of Cu(II) and Pb(II) by Pithophora oedogonia: Sorption, desorption and repeated use of the biomass
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  Data: <searchLink fieldCode="AR" term="%22Singh%2C+Alpana%22">Singh, Alpana</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kumar%2C+Dhananjay%22">Kumar, Dhananjay</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Gaur%2C+J%2EP%2E%22">Gaur, J.P.</searchLink><i> gaurjp@yahoo.co.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Hazardous+Materials%22">Journal of Hazardous Materials</searchLink>. Apr2008, Vol. 152 Issue 3, p1011-1019. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Green+algae%22">Green algae</searchLink><br /><searchLink fieldCode="DE" term="%22Oedogoniaceae%22">Oedogoniaceae</searchLink><br /><searchLink fieldCode="DE" term="%22Biomass%22">Biomass</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption%22">Absorption</searchLink><br /><searchLink fieldCode="DE" term="%22Copper%22">Copper</searchLink><br /><searchLink fieldCode="DE" term="%22Metals%22">Metals</searchLink><br /><searchLink fieldCode="DE" term="%22Hazardous+substances%22">Hazardous substances</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: Maximum sorption of Cu(II) and Pb(II) by dried filamentous green alga Pithophora oedogonia occurred at pH 4.5 and 5.0, respectively. Chemical pretreatment could not appreciably enhance the metal sorption ability of the biomass. HCl and EDTA desorbed 92–96% of the sorbed metal from the metal-loaded biomass. Sorption and desorption of both the test metals were very rapid attaining an equilibrium within 15min. The time course data of both the processes fitted well to the pseudo-first and the pseudo-second-order Lagergren kinetic models with r 2 ≥0.979. The isotherm equilibrium of Cu(II) and Pb(II) followed the Redlich-Peterson and Sips model very well with r 2 ≥0.991. The sorption of Cu(II) and Pb(II) at varying biomass doses could be well defined by linear and hyperbolic decrease, respectively. The regenerated biomass of Pithophora has better reusability for Pb(II) than for Cu(II). A good mechanical strength of Pithophora biomass was apparent as only 10–15% loss of biomass occurred at the end of the fifth cycle. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.jhazmat.2007.07.076
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 1011
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      – SubjectFull: Green algae
        Type: general
      – SubjectFull: Oedogoniaceae
        Type: general
      – SubjectFull: Biomass
        Type: general
      – SubjectFull: Absorption
        Type: general
      – SubjectFull: Copper
        Type: general
      – SubjectFull: Metals
        Type: general
      – SubjectFull: Hazardous substances
        Type: general
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      – TitleFull: Removal of Cu(II) and Pb(II) by Pithophora oedogonia: Sorption, desorption and repeated use of the biomass
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            NameFull: Singh, Alpana
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            NameFull: Kumar, Dhananjay
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            NameFull: Gaur, J.P.
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              M: 04
              Text: Apr2008
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              Y: 2008
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