Journal
CHEMOSPHERE
Volume 70, Issue 6, Pages 1141-1145Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2007.07.082
Keywords
phosphatic clay; leaching; heavy metals; immobilization
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In this study, phosphatic clay was used as a phosphate containing material. The fractionation of phosphorus was carried out using the CRM BCR-684 protocol, and the inorganic phosphorus, especially all the apatite phosphorus, was found as the major form. The elemental compositions of the phosphatic clay were identified using an X-ray fluorescence spectrometer, and was found to be mainly composed of CaO and P2O5. The specific surface area, pore volume and average pore diameter were measured also. Results of experiment show that the phosphatic clay may provide a cost-effective way to remediate heavy metal contaminated aqueous and slurry phase. (C) 2007 Elsevier Ltd. All rights reserved.
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