Study of Pb(II) biosorption from aqueous solution using immobilized Spirogyra subsalsa biomass

Mawardi Anwar, Edison Munaf, Soleh Kosela, Widayanti Wibowo, Rahadian Zainul

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The immobilized biomass of green algae Spirogyra subsalsa was used as biosorbent for removal of lead (II) from aqueous solution. The effects of operating parameters, such a flow rate, influent pH and influent metals concentration were investigated. Significantly, the immobilized biomass showed IR spectrum not difference with free algae biomass. The biosorption process were a repaid process, where in more than 50% of the final uptake value occur at rate flow 1.5 mL/minute. The biosorption capacities of biomass for cations increase rapidly with pH between 2,0-3,0 then the maximum sorption was seen at pH 4,0. The biosorptive capacity increased with initial concentration in the range 50-200 mg/L. A comparison of the biosorption of Pb2+ cation by immobilized and free algae biomass showed an increase in uptake of over 4,25%. The immobilized biomass could be regenerated using nitrate acid, HNO3, and significantly proportional with using nitrate acid concentration, with up to 89% Pb2+recovery by 0,5 M HNO3. This study suggests that such an immobilized biosorbent system has the potential to be used in the industrial removal and recovery of Pb2+ cation from aqueous solution.

Original languageEnglish
Pages (from-to)715-722
Number of pages8
JournalJournal of Chemical and Pharmaceutical Research
Volume7
Issue number11
Publication statusPublished - 1 Jan 2015

Keywords

  • Biosorption
  • Desorption
  • Nitrate acid
  • S. subsalsa
  • Sodium silicate

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