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Heavy Metal Adsorption


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Год выпуска: 2010
Автор: Mohammad Amer,Fawwaz Khalili and Akl Awwad
Издательство: LAP Lambert Academic Publishing
Страниц: 128
ISBN: 9783838380261
Описание
 Pollution in our planet by heavy metals is an important environmental problem threatening the health of human populations and natural ecosystems. Agricultural and industrial pollution release large amounts of heavy metals into the atmosphere, surface water, soil, and plants. The aim of this research work is to determine the potential of application of sodium polyphosphate modified kaolinite clay as an adsorbent for the removal of lead (II), zinc (II) and cadmium (II) ions from aqueous solutions. The adsorbent dosage, pH, temperature and contact time were investigated. The adsorption isotherms of all three metal ions followed well Langmuir equation. Modified sodium polyphosphate-kaolinite clay was found to remove heavy metal ions efficiently from aqueous solutions with selectivity in the order of Pb2+ > Zn2+ > Cd2+. The maximum heavy metal ions adsorbed by modified. The results of this study showed that the sodium polyphosphate-kaolinite clay powder can be efficiently...

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