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 publicationGeotechnical Special Publication
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

Other

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

Fingerprint

Heavy metals
Clay
heavy metal
Phosphorus
clay
Phosphates
phosphate
phosphorus
inorganic phosphorus
Apatite
Chemical analysis
X-ray fluorescence
Specific surface area
immobilization
Leaching
apatite
spectrometry
surface area
leaching
material

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering

Cite this

Hwang, A., & Khim, J. (2008). Characteristics of phosphatic clay for immobilizing heavy metals. In Geotechnical Special Publication (177 ed., pp. 835-839) https://doi.org/10.1061/40970(309)105

Characteristics of phosphatic clay for immobilizing heavy metals. / Hwang, Anna; Khim, Jeehyeong.

Geotechnical Special Publication. 177. ed. 2008. p. 835-839.

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

Hwang, A & Khim, J 2008, Characteristics of phosphatic clay for immobilizing heavy metals. in Geotechnical Special Publication. 177 edn, pp. 835-839, GeoCongress 2008: Geotechnics of Waste Management and Remediation, New Orleans, LA, United States, 08/3/9. https://doi.org/10.1061/40970(309)105
Hwang A, Khim J. Characteristics of phosphatic clay for immobilizing heavy metals. In Geotechnical Special Publication. 177 ed. 2008. p. 835-839 https://doi.org/10.1061/40970(309)105
Hwang, Anna ; Khim, Jeehyeong. / Characteristics of phosphatic clay for immobilizing heavy metals. Geotechnical Special Publication. 177. ed. 2008. pp. 835-839
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