Biosorption of Pb2+ from aqueous solution by waste biomass of aerial roots of Rhizophora mangle (red mangrove) |
| |
Authors: | Horsfall Michael Ogban Fred Akporhonor Eyitemi Emmanuel |
| |
Affiliation: | Department of Pure & Industrial Chemistry, University of Port Harcourt, P.O. Box 402, Choba, Port Harcourt, Nigeria. horsfalljnr@yahoo.com |
| |
Abstract: | The processing waste of the aerial roots of Rhizophora mangle was used in both its unmodified or mercaptoacetic acid (MAA) modified form for the sorption of Pb2+ from aqueous solution. The biomass rapidly and strongly sorbed Pb2+ at pH 5.0, which indicated chemisorption. A significant increase in Pb2+ sorption resulted from MAA treatment of the biomass, indicating that sorption occurs through an ion-exchange process. From sorption-capacity experiments, the unmodified and modified materials extracted, at pH 5, 31.3 and 85.5 mg of Pb2+ per gram of biomass, respectively, from aqueous solutions. Our studies may contribute to an innovative method for the economical and ecologically save removal and recovery of heavy-atom metal ions from contaminated waters through biosorption. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|