Kajian pengoptimuman penyingkiran radium-226 daripada tanih tercemar radium dengan menggunakan asid humik

Translated title of the contribution: Optimization study for removal of radium-226 from radium-contaminated soil using humic acid

Esther Phillip, Muhamad Samudi Yasir, Muhamat Omar, Mohd Zaidi Ibrahim, Zalina Laili

Research output: Contribution to journalArticle

Abstract

This study discusses the various parameters involved in the removal of radium-226 from radium-contaminated soil using humic acid extracted from Malaysian peat soil. The parameters studied included the contact time, the pH and the concentration of humic acid solution and the liquid/solid ratio. The optimum removal efficiency of radium-226 was achieved after 24 hours of agitation. Further agitation did not contribute to any increase in the removal efficiency of radium-226. Meanwhile, the removal efficiency of radium-226 was optimum when the humic acid concentration was 100 ppm. The greatest removal efficiency of radium-226 was obtained using highly basic humic acid solutions of pH 10-11. Humic acid solutions of basic pH 8-9 resulted in comparable removal efficiency to humic acid solutions of pH 7. Nevertheless, acidic humic acid solutions showed the lowest removal efficiency of radium-226. For the purpose of this study, humic acid solutions of pH 7 were used throughout the study. A ratio of 20 mL humic acid solution to 1 g soil sample was found as the optimum value. Any further increment in the ratio did not contribute to the removal efficiency of radium-226.

Original languageUndefined/Unknown
Pages (from-to)31-38
Number of pages8
JournalMalaysian Journal of Analytical Sciences
Volume16
Issue number1
Publication statusPublished - 2012

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Humic Substances
Radium
Soils
Peat

Keywords

  • Concentration
  • Contact time
  • Humic acid
  • Liquid/solid ratio
  • pH
  • Radium-226

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Kajian pengoptimuman penyingkiran radium-226 daripada tanih tercemar radium dengan menggunakan asid humik. / Phillip, Esther; Yasir, Muhamad Samudi; Omar, Muhamat; Ibrahim, Mohd Zaidi; Laili, Zalina.

In: Malaysian Journal of Analytical Sciences, Vol. 16, No. 1, 2012, p. 31-38.

Research output: Contribution to journalArticle

Phillip, Esther ; Yasir, Muhamad Samudi ; Omar, Muhamat ; Ibrahim, Mohd Zaidi ; Laili, Zalina. / Kajian pengoptimuman penyingkiran radium-226 daripada tanih tercemar radium dengan menggunakan asid humik. In: Malaysian Journal of Analytical Sciences. 2012 ; Vol. 16, No. 1. pp. 31-38.
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