Characteristics of phosphatic clay for immobilizing heavy metals

Anna Hwang, Jeehyeong Khim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, phosphatic clay was used as a phosphate-containing material. The phosphorus was fractionated by CRM BCR-684 protocol, and inorganic phosphorus, mostly apatite phosphorus, was determined to be the major form. The elemental composition of the phosphatic clay was identified using X-ray fluorescence (XRF) spectrometry and the main compositions were CaO and P 2O5. The specific surface area, pore volume and average pore diameter were also measured. The leaching test results showed that the phosphate in the phosphatic clay was easily dissolved to aqueous phase, enabling the phosphate clay to be used as a source material for the immobilization process of heavy metals. Copyright ASCE 2008.

Original languageEnglish
Title of host publicationProceedings of Sessions of GeoCongress 2008 - GeoCongress 2008
Subtitle of host publicationGeotechnics of Waste Management and Remediation, GSP 177
Pages835-839
Number of pages5
Edition177
DOIs
Publication statusPublished - 2008 Dec 1
EventGeoCongress 2008: Geotechnics of Waste Management and Remediation - New Orleans, LA, United States
Duration: 2008 Mar 92008 Mar 12

Publication series

NameGeotechnical Special Publication
Number177
ISSN (Print)0895-0563

Other

OtherGeoCongress 2008: Geotechnics of Waste Management and Remediation
CountryUnited States
CityNew Orleans, LA
Period08/3/908/3/12

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ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Cite this

Hwang, A., & Khim, J. (2008). Characteristics of phosphatic clay for immobilizing heavy metals. In Proceedings of Sessions of GeoCongress 2008 - GeoCongress 2008: Geotechnics of Waste Management and Remediation, GSP 177 (177 ed., pp. 835-839). (Geotechnical Special Publication; No. 177). https://doi.org/10.1061/40970(309)105