Please use this identifier to cite or link to this item:
|Title:||Biosorption of heavy metal ions (Pb, Cu, and Cd) from aqueous solutions by the Marine Alga Sargassum sp. in single- And multiple-metal systems||Authors:||Sheng, P.X.
|Issue Date:||11-Apr-2007||Citation:||Sheng, P.X., Ting, Y.-P., Chen, J.P. (2007-04-11). Biosorption of heavy metal ions (Pb, Cu, and Cd) from aqueous solutions by the Marine Alga Sargassum sp. in single- And multiple-metal systems. Industrial and Engineering Chemistry Research 46 (8) : 2438-2444. ScholarBank@NUS Repository. https://doi.org/10.1021/ie0615786||Abstract:||The sorption of heavy metals (lead, copper, and cadmium) by a marine algal biomass Sargassum sp. was studied in single and multiple metal-ion systems. Kinetic experiments in the single-metal system revealed very rapid removal rates of metal ions, with ∼90% of the total adsorption occurring within 10-60 min. Biosorption performance for each single metal ion showed an increase in specific metal uptake with an increase in pH. Experimental data for each metal ion were well-described by the Langmuir adsorption isotherm. Generally, the algal biomass demonstrated the highest uptake for lead, followed by copper and cadmium, with this uptake trend correlating with the electronegativities and stability constants of the metal-ion hydroxides. The effect of the presence of multiple metal ions on the biosorption performance has been investigated, and the results have been evaluated using the modified competitive Langmuir model and modified Jain-Snoeyink model, both of which fit the data well. The metals with the highest uptake capacity in single-metal systems showed a greater inhibitory effect on the biosorption of other metal ions in the multiple-component systems. The study showed the good performance of metal uptake by Sargassum in both single- and multiple-metal systems. © 2007 American Chemical Society.||Source Title:||Industrial and Engineering Chemistry Research||URI:||http://scholarbank.nus.edu.sg/handle/10635/74496||ISSN:||08885885||DOI:||10.1021/ie0615786|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 25, 2020
WEB OF SCIENCETM
checked on Feb 25, 2020
checked on Feb 17, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.