Laboratory Scale Investigations on Heap (Bio)leaching of Municipal Solid Waste Incineration Bottom Ash

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

Municipal solid waste incineration bottom ash (MSWI BA) is the main output of the municipal solid waste incineration process, both in mass and volume. It contains some heavy metals that possess market value, but may also limit the utilization of the material. This study illustrates a robust and simple heap leaching method for recovering zinc and copper from MSWI BA. Moreover, the effect of autotrophic and acidophilic bioleaching microorganisms in the system was studied. Leaching yields for zinc and copper varied between 18–53% and 6–44%, respectively. For intensified copper dissolution, aeration and possibly iron oxidizing bacteria caused clear benefits. The MSWI BA was challenging to treat. The main components, iron and aluminum, dissolved easily and unwantedly, decreasing the quality of pregnant leach solution. Moreover, the physical nature and the extreme heterogeneity of the material caused operative requirements for the heap leaching. Nevertheless, with optimized parameters, heap leaching may offer a proper solution for MSWI BA treatment.
Original languageEnglish
Article number290
JournalMinerals
Volume9
Issue number5
DOIs
Publication statusPublished - 2019
MoE publication typeA1 Journal article-refereed

Fingerprint

Ashes
bottom ash
Waste incineration
Municipal solid waste
incineration
municipal solid waste
Leaching
leaching
copper
Copper
Zinc
zinc
Iron
Bioleaching
iron
Microorganisms
aeration
Heavy metals
Bacteria
Dissolution

Keywords

  • municipal solid waste incineration
  • bottom ash
  • heap leasching
  • bioleaching

Cite this

@article{520bdc8af58448b9b2448e15cd1f1297,
title = "Laboratory Scale Investigations on Heap (Bio)leaching of Municipal Solid Waste Incineration Bottom Ash",
abstract = "Municipal solid waste incineration bottom ash (MSWI BA) is the main output of the municipal solid waste incineration process, both in mass and volume. It contains some heavy metals that possess market value, but may also limit the utilization of the material. This study illustrates a robust and simple heap leaching method for recovering zinc and copper from MSWI BA. Moreover, the effect of autotrophic and acidophilic bioleaching microorganisms in the system was studied. Leaching yields for zinc and copper varied between 18–53{\%} and 6–44{\%}, respectively. For intensified copper dissolution, aeration and possibly iron oxidizing bacteria caused clear benefits. The MSWI BA was challenging to treat. The main components, iron and aluminum, dissolved easily and unwantedly, decreasing the quality of pregnant leach solution. Moreover, the physical nature and the extreme heterogeneity of the material caused operative requirements for the heap leaching. Nevertheless, with optimized parameters, heap leaching may offer a proper solution for MSWI BA treatment.",
keywords = "municipal solid waste incineration, bottom ash, heap leasching, bioleaching",
author = "Jarno M{\"a}kinen and Marja Salo and Jaakko Soini and P{\"a}ivi Kinnunen",
note = "Project 121929",
year = "2019",
doi = "10.3390/min9050290",
language = "English",
volume = "9",
journal = "Minerals",
issn = "2075-163X",
publisher = "MDPI",
number = "5",

}

Laboratory Scale Investigations on Heap (Bio)leaching of Municipal Solid Waste Incineration Bottom Ash. / Mäkinen, Jarno; Salo, Marja; Soini, Jaakko; Kinnunen, Päivi.

In: Minerals, Vol. 9, No. 5, 290, 2019.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Laboratory Scale Investigations on Heap (Bio)leaching of Municipal Solid Waste Incineration Bottom Ash

AU - Mäkinen, Jarno

AU - Salo, Marja

AU - Soini, Jaakko

AU - Kinnunen, Päivi

N1 - Project 121929

PY - 2019

Y1 - 2019

N2 - Municipal solid waste incineration bottom ash (MSWI BA) is the main output of the municipal solid waste incineration process, both in mass and volume. It contains some heavy metals that possess market value, but may also limit the utilization of the material. This study illustrates a robust and simple heap leaching method for recovering zinc and copper from MSWI BA. Moreover, the effect of autotrophic and acidophilic bioleaching microorganisms in the system was studied. Leaching yields for zinc and copper varied between 18–53% and 6–44%, respectively. For intensified copper dissolution, aeration and possibly iron oxidizing bacteria caused clear benefits. The MSWI BA was challenging to treat. The main components, iron and aluminum, dissolved easily and unwantedly, decreasing the quality of pregnant leach solution. Moreover, the physical nature and the extreme heterogeneity of the material caused operative requirements for the heap leaching. Nevertheless, with optimized parameters, heap leaching may offer a proper solution for MSWI BA treatment.

AB - Municipal solid waste incineration bottom ash (MSWI BA) is the main output of the municipal solid waste incineration process, both in mass and volume. It contains some heavy metals that possess market value, but may also limit the utilization of the material. This study illustrates a robust and simple heap leaching method for recovering zinc and copper from MSWI BA. Moreover, the effect of autotrophic and acidophilic bioleaching microorganisms in the system was studied. Leaching yields for zinc and copper varied between 18–53% and 6–44%, respectively. For intensified copper dissolution, aeration and possibly iron oxidizing bacteria caused clear benefits. The MSWI BA was challenging to treat. The main components, iron and aluminum, dissolved easily and unwantedly, decreasing the quality of pregnant leach solution. Moreover, the physical nature and the extreme heterogeneity of the material caused operative requirements for the heap leaching. Nevertheless, with optimized parameters, heap leaching may offer a proper solution for MSWI BA treatment.

KW - municipal solid waste incineration

KW - bottom ash

KW - heap leasching

KW - bioleaching

UR - http://www.scopus.com/inward/record.url?scp=85070482546&partnerID=8YFLogxK

U2 - 10.3390/min9050290

DO - 10.3390/min9050290

M3 - Article

VL - 9

JO - Minerals

JF - Minerals

SN - 2075-163X

IS - 5

M1 - 290

ER -