Characterization of coal bottom ash (CBA) heavy metal element after acid leaching treatment

A. A. Yahya, N. Ali, Nur Liyana Mohd Kamal, S. Shahidan, Salmia Beddu, M. F. Nuruddin, N. Shafiq

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Coal ash is a residue which was produce during the combustion of coal. Coal fly ash (FA), coal bottom ash (CBA) and boiler slag was primarily produced from the combustion process. Unfortunately, the existences of metallic elements in CBA cause the limitation to use CBA in industries. Extensive researches have been carried out to reduce heavy metal element in CBA. From previous studies, the strong acid leaching treatment was carried out to remove metallic impurities in CBA. The usage of strong acid could significantly hazardous to human and environment. In this study, the leaching process was done by replacing the usage of strong acid with citric acid which acted as weaker acid. Experimental result shows that the acid leaching treatment has potential to be used in reducing metallic elements in CBA under optimum solution temperature of 400C with 4% acid concentration at 60 min reaction period. The characteristic of CBA was also determined by comparing the SEM, particle distribution, specific gravity, water content and setting time of raw CBA with treated CBA.

Original languageEnglish
Pages (from-to)141-151
Number of pages11
JournalMalaysian Construction Research Journal
Volume4
Issue number2 Special Issue
Publication statusPublished - 01 Jan 2018

Fingerprint

Coal ash
Leaching
Heavy metals
Coal
Acids
Citric acid
Fly ash
Density (specific gravity)
Water content
Slags
Boilers
Impurities
Scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Building and Construction

Cite this

Yahya, A. A., Ali, N., Mohd Kamal, N. L., Shahidan, S., Beddu, S., Nuruddin, M. F., & Shafiq, N. (2018). Characterization of coal bottom ash (CBA) heavy metal element after acid leaching treatment. Malaysian Construction Research Journal, 4(2 Special Issue ), 141-151.
Yahya, A. A. ; Ali, N. ; Mohd Kamal, Nur Liyana ; Shahidan, S. ; Beddu, Salmia ; Nuruddin, M. F. ; Shafiq, N. / Characterization of coal bottom ash (CBA) heavy metal element after acid leaching treatment. In: Malaysian Construction Research Journal. 2018 ; Vol. 4, No. 2 Special Issue . pp. 141-151.
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Yahya, AA, Ali, N, Mohd Kamal, NL, Shahidan, S, Beddu, S, Nuruddin, MF & Shafiq, N 2018, 'Characterization of coal bottom ash (CBA) heavy metal element after acid leaching treatment', Malaysian Construction Research Journal, vol. 4, no. 2 Special Issue , pp. 141-151.

Characterization of coal bottom ash (CBA) heavy metal element after acid leaching treatment. / Yahya, A. A.; Ali, N.; Mohd Kamal, Nur Liyana; Shahidan, S.; Beddu, Salmia; Nuruddin, M. F.; Shafiq, N.

In: Malaysian Construction Research Journal, Vol. 4, No. 2 Special Issue , 01.01.2018, p. 141-151.

Research output: Contribution to journalArticle

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