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Municipal Landfill Leachate Treatment for Metal Removal Using Water Hyacinth in a Floating Aquatic System
Author(s) -
ElGendy A. S.,
Biswas N.,
Bewtra J. K.
Publication year - 2006
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143005x72849
Subject(s) - hyacinth , eichhornia crassipes , leachate , cadmium , phytoremediation , chromium , environmental chemistry , chemistry , aquatic plant , bioaccumulation , environmental science , biomass (ecology) , environmental engineering , agronomy , heavy metals , macrophyte , ecology , biology , organic chemistry
Experiments were carried out to investigate the ability of water hyacinth (Eichhornia crassipes) to remove five heavy metals (cadmium, chromium, copper, nickel, and lead) commonly found in leachate. All experiments were conducted in batch reactors in a greenhouse. It was found that living biomass of water hyacinth was a good accumulator for copper, chromium, and cadmium. The plants accumulated copper, chromium, and cadmium up to 0.96, 0.83, and 0.50%, respectively, of their dry root mass. However, lead and nickel were poorly accumulated in water hyacinth. Also, nonliving biomass of water hyacinth dry roots showed ability to accumulate all metals, except Cr(VI), which was added in anionic form. The highest total metal sorption by nonliving dry water hyacinth roots was found to take place at pH 6.4. The current research demonstrates the potential of using water hyacinth for the treatment of landfill leachate containing heavy metals.

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