Heavy-metal reduction and solidification in municipal solid waste incineration (MSWI) fly ash using water, NaOH, KOH, and NH4OH in combination with CO2 uptake procedure

Dongwoo Kang, Juhee Son, Yunsung Yoo, Sangwon Park, Il Sang Huh, Jin Won Park

Research output: Contribution to journalArticle

Abstract

A new method for reducing heavy metals in municipal solid waste incineration (MSWI) fly ash was investigated. In many previous studies, acidic leaching was regarded as a standard method for metal-ion extraction. However, this process requires additional treatment of the wastewater containing heavy-metal components. Therefore, in this study, we used basic leaching solvents, i.e., 0.5 M aqueous NaOH, KOH, and NH4OH. The leachates and remaining solids were qualitatively and quantitatively analyzed. To facilitate the handling of the extracted heavy-metal components, the leached metal ions were fixed and precipitated using a CO2 uptake procedure. The solids were analyzed using X-ray fluorescence and X-ray diffraction, and scanning electron microscope images were obtained. The leachates were analyzed using inductively coupled plasma optical emission spectroscopy. In contrast to conventional acidic extraction, heavy-metal reduction and fixation, as well as the mass reduction of the waste, could be achieved with the proposed method.

Original languageEnglish
Article number122534
JournalChemical Engineering Journal
Volume380
DOIs
Publication statusPublished - 2020 Jan 15

Fingerprint

Coal Ash
Waste incineration
Municipal solid waste
solidification
Heavy Metals
incineration
Fly ash
municipal solid waste
fly ash
Heavy metals
Solidification
heavy metal
Water
Leaching
Metal ions
leachate
leaching
water
Optical emission spectroscopy
ion

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

@article{1ed7c824de894aff9e7353b0db9ca7ae,
title = "Heavy-metal reduction and solidification in municipal solid waste incineration (MSWI) fly ash using water, NaOH, KOH, and NH4OH in combination with CO2 uptake procedure",
abstract = "A new method for reducing heavy metals in municipal solid waste incineration (MSWI) fly ash was investigated. In many previous studies, acidic leaching was regarded as a standard method for metal-ion extraction. However, this process requires additional treatment of the wastewater containing heavy-metal components. Therefore, in this study, we used basic leaching solvents, i.e., 0.5 M aqueous NaOH, KOH, and NH4OH. The leachates and remaining solids were qualitatively and quantitatively analyzed. To facilitate the handling of the extracted heavy-metal components, the leached metal ions were fixed and precipitated using a CO2 uptake procedure. The solids were analyzed using X-ray fluorescence and X-ray diffraction, and scanning electron microscope images were obtained. The leachates were analyzed using inductively coupled plasma optical emission spectroscopy. In contrast to conventional acidic extraction, heavy-metal reduction and fixation, as well as the mass reduction of the waste, could be achieved with the proposed method.",
author = "Dongwoo Kang and Juhee Son and Yunsung Yoo and Sangwon Park and Huh, {Il Sang} and Park, {Jin Won}",
year = "2020",
month = "1",
day = "15",
doi = "10.1016/j.cej.2019.122534",
language = "English",
volume = "380",
journal = "Chemical Engineering Journal",
issn = "1385-8947",
publisher = "Elsevier",

}

Heavy-metal reduction and solidification in municipal solid waste incineration (MSWI) fly ash using water, NaOH, KOH, and NH4OH in combination with CO2 uptake procedure. / Kang, Dongwoo; Son, Juhee; Yoo, Yunsung; Park, Sangwon; Huh, Il Sang; Park, Jin Won.

In: Chemical Engineering Journal, Vol. 380, 122534, 15.01.2020.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Heavy-metal reduction and solidification in municipal solid waste incineration (MSWI) fly ash using water, NaOH, KOH, and NH4OH in combination with CO2 uptake procedure

AU - Kang, Dongwoo

AU - Son, Juhee

AU - Yoo, Yunsung

AU - Park, Sangwon

AU - Huh, Il Sang

AU - Park, Jin Won

PY - 2020/1/15

Y1 - 2020/1/15

N2 - A new method for reducing heavy metals in municipal solid waste incineration (MSWI) fly ash was investigated. In many previous studies, acidic leaching was regarded as a standard method for metal-ion extraction. However, this process requires additional treatment of the wastewater containing heavy-metal components. Therefore, in this study, we used basic leaching solvents, i.e., 0.5 M aqueous NaOH, KOH, and NH4OH. The leachates and remaining solids were qualitatively and quantitatively analyzed. To facilitate the handling of the extracted heavy-metal components, the leached metal ions were fixed and precipitated using a CO2 uptake procedure. The solids were analyzed using X-ray fluorescence and X-ray diffraction, and scanning electron microscope images were obtained. The leachates were analyzed using inductively coupled plasma optical emission spectroscopy. In contrast to conventional acidic extraction, heavy-metal reduction and fixation, as well as the mass reduction of the waste, could be achieved with the proposed method.

AB - A new method for reducing heavy metals in municipal solid waste incineration (MSWI) fly ash was investigated. In many previous studies, acidic leaching was regarded as a standard method for metal-ion extraction. However, this process requires additional treatment of the wastewater containing heavy-metal components. Therefore, in this study, we used basic leaching solvents, i.e., 0.5 M aqueous NaOH, KOH, and NH4OH. The leachates and remaining solids were qualitatively and quantitatively analyzed. To facilitate the handling of the extracted heavy-metal components, the leached metal ions were fixed and precipitated using a CO2 uptake procedure. The solids were analyzed using X-ray fluorescence and X-ray diffraction, and scanning electron microscope images were obtained. The leachates were analyzed using inductively coupled plasma optical emission spectroscopy. In contrast to conventional acidic extraction, heavy-metal reduction and fixation, as well as the mass reduction of the waste, could be achieved with the proposed method.

UR - http://www.scopus.com/inward/record.url?scp=85070969579&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85070969579&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2019.122534

DO - 10.1016/j.cej.2019.122534

M3 - Article

VL - 380

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

M1 - 122534

ER -