Pilot-test of the calcium sodium phosphate (CNP) process for the stabilization/solidification of various mercury-contaminated wastes

Jae Han Cho, Yujin Eom, Tai Gyu Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A pilot-scale calcium sodium phosphate (CNP) plant was designed and manufactured to examine the performance of recently developed stabilization/solidification (S/S) technology. Hg-contaminated wastes samples generated via various industrial processes in Korea, including municipal, industrial, and medical waste incineration, wastewater treatment, and lime production, were collected and treated using the pilot-scale CNP plant. S/S samples were fabricated according to various operating conditions, including waste type, the dose of the stabilization reagent (Na2S), and the waste loading ratio. Although the performances (Hg leaching value and compressive strength) were reduced as the waste loading ratio increased, most of the S/S samples exhibited Hg leaching values that were below the universal treatment standard limit of 25μgL-1 and compressive strengths that exceeded the criterion of 3.45MPa.

Original languageEnglish
Pages (from-to)374-381
Number of pages8
JournalChemosphere
Volume117
Issue number1
DOIs
Publication statusPublished - 2014 Jan 1

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Compressive Strength
solidification
Mercury
Solidification
Calcium
stabilization
Phosphates
Medical Waste
Stabilization
calcium
Sodium
phosphate
sodium
Incineration
Industrial Waste
Korea
Waste Water
Leaching
Compressive strength
compressive strength

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemistry(all)

Cite this

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Pilot-test of the calcium sodium phosphate (CNP) process for the stabilization/solidification of various mercury-contaminated wastes. / Cho, Jae Han; Eom, Yujin; Lee, Tai Gyu.

In: Chemosphere, Vol. 117, No. 1, 01.01.2014, p. 374-381.

Research output: Contribution to journalArticle

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