Journal
SEPARATION SCIENCE AND TECHNOLOGY
Volume 42, Issue 16, Pages 3641-3656Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01496390701710794
Keywords
Pb(II); Co(II); biosorption; isotherms; rose waste biomass
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An attempt was made to assess the biosorption potential of rose waste biomass for the removal of Pb(II) and Co(II) ions from synthetic effluents. Biosorption of heavy metal ions (>90%) reached equilibrium in 30 min. Maximum removal of Pb(11) and Co(II) occurred at pH 5 and 6 respectively. The biosorbent dose for efficient uptake of Pb(II) and Co(II) was 0.5 g/L for both metals. The biosorbent size affected the Pb(II) and Co(II) biosorption rate and capacity. Rose waste biomass was found effective for Pb(II) and Co(H) removal from synthetic effluents in the concentration range 10-640 mg/L. Equilibrium sorption studies showed that the extent of Pb(H) and Co(II) uptake by the rose waste biomass was better described by the Langmuir isotherm in comparison to the Freundlich model. The uptake capacities of the two metal ions were 156 and 27.15 mg/g for Pb(II) and Co(II) respectively.
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