Abstract：
:The binary sorption of Pb(II) and Cu(II) onto calcium alginate, algal biomass and algal/glutaraldehyde-crosslinked polyethyleneimine (PEI) composite beads was studied in the absence and presence of Ca(II). Different competitive models were compared for predicting the equilibrium data. Results show that all the sorbents have a significant preference for Pb(II) over Cu(II) in Pb-Cu system: the separation factors reach 14.1, 9.1 and 3.6 for alginate, algal biomass and algal/PEI beads, respectively. Kinetic studies confirm the occurrence of an ion-exchange mechanism between Pb(II) and Cu(II) as the sorption sites are progressively saturated. Competitive Sips model predicts well the sorption data for all the sorbents. In Pb-Cu-Ca system, the Cu(II) sorption by algal beads was negligible, while algal/PEI still maintained a significant sorption of Cu(II) sorption under these conditions.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Wang S,Vincent T,Faur C,Guibal Edoi
10.1016/j.biortech.2017.01.066subject
Has Abstractpub_date
2017-05-01 00:00:00pages
26-35eissn
0960-8524issn
1873-2976pii
S0960-8524(17)30103-7journal_volume
231pub_type
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