A comparative study of modified and unmodified maize tassels for removal of selected trace metals in contaminated water
作者： Isaac W. Mwangi , J. Catherine Ngila , Jonathan O. Okonkwo
DOI: 10.1080/02772248.2011.638636
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摘要: Powdered maize tassels were studied and found to exhibit metal sorption properties due the availability of functional groups. The have a high amount soluble organic substances that can dissolve in aqueous media, contributing secondary pollution during water treatment process. A chelating agent was chemically attached on with view increase capacity, minimize leaching, enhance tassels’ stability. Thermogravimetric analysis confirmed modification improved their thermal stability withstand temperatures above 600°C as well reduced “secondary pollution”. modified sorbent employed for lead, copper, cadmium ions both model solutions real samples. contact time pH optimized after which Langmuir Freundlich isotherms applied data. capacities Cu2+, Cd2+, Pb2+ from 3.4, 0.8, 1.7 g kg−1, respectively, 6.3, 2.6, 2.6 g kg−1 sam...
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