Biosorption of Pb2+ from Aqueous Solution by Waste Biomass of Aerial Roots of Rhizophora mangle (Red Mangrove)

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 Pb...

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Published in:Chemistry & biodiversity 2005-09, Vol.2 (9), p.1246-1255
Main Authors: Horsfall Jr, Michael, Ogban, Fred, Akporhonor, Eyitemi Emmanuel
Format: Article
Language:English
Subjects:
Adsorption
Biomass
Hydrogen-Ion Concentration
Lead - chemistry
Lead - isolation & purification
Plant Roots - chemistry
Plant Roots - metabolism
Rhizophoraceae - chemistry
Rhizophoraceae - metabolism
Solutions - chemistry
Temperature
Thioglycolates - chemistry
Time
Waste Products - analysis
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Ogban, Fred
Akporhonor, Eyitemi Emmanuel
description 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.
doi_str_mv 10.1002/cbdv.200590095
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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. 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subjects Adsorption
Biomass
Hydrogen-Ion Concentration
Lead - chemistry
Lead - isolation & purification
Plant Roots - chemistry
Plant Roots - metabolism
Rhizophoraceae - chemistry
Rhizophoraceae - metabolism
Solutions - chemistry
Temperature
Thioglycolates - chemistry
Time
Waste Products - analysis
title Biosorption of Pb2+ from Aqueous Solution by Waste Biomass of Aerial Roots of Rhizophora mangle (Red Mangrove)
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