Characterization of a multi-metal binding biosorbent: Chemical modification and desorption studies.

Publication Type:
Journal Article
Citation:
Bioresource technology, 2015, 193 pp. 477 - 487
Issue Date:
2015-10
Full metadata record
Files in This Item:
Filename Description Size
ThumbnailCharacterization of a multi-metal binding biosorbent (BITE 15203).pdfPublished Version697.32 kB
Adobe PDF
This work attends to preparation and characterization of a novel multi-metal binding biosorbent after chemical modification and desorption studies. Biomass is a combination of tea waste, maple leaves and mandarin peels with a certain proportion to adsorb cadmium, copper, lead and zinc ions from aqueous solutions. The mechanism involved in metal removal was investigated by SEM, SEM/EDS and FTIR. SEM/EDS showed the presence of different chemicals and adsorbed heavy metal ions on the surface of biosorbent. FTIR of both unmodified and modified biosorbents revealed the important role of carboxylate groups in heavy metal biosorption. Desorption using different eluents and 0.1 M HCl showed the best desorption performance. The effectiveness of regeneration step by 1 M CaCl2 on five successive cycles of sorption and desorption displays this multi-metal binding biosorbent (MMBB) can effectively be utilized as an adsorbent to remove heavy metal ions from aqueous solutions in five cycles of sorption/desorption/regeneration.
Please use this identifier to cite or link to this item: