Stabilisation and solidification of steel industry sludge

T. Falayi, F. Ntuli

Research output: Contribution to conferencePaper

Abstract

This report presents the research done on the treatment of steel industry sludge by the solidification /stabilisation (S/S) process using desilicated fly ash (DFA) and lime as the binding agents. The sludge was characterized using X-ray fluorescence, X-ray diffraction, and geotechnical techniques. The main oxides in the sludge were iron oxide and zinc oxide. Unconfined compressed strength of 0.49 MPa was achieved with 40% DFA: lime (70:30) addition, at pH of 12.88. The leachability of Fe was reduced by 94% and Zn by 98.6%. The rate of lime consumption during stabilisation was best described with 2nd order kinetics plot. © 2017 IEEE.
Original languageEnglish
Pages1-4
Number of pages4
DOIs
Publication statusPublished - 2018

Fingerprint

Iron and steel industry
Coal Ash
Solidification
Stabilization
Zinc Oxide
Oxides
Fluorescence
X ray diffraction
X rays
Kinetics
lime

Cite this

@conference{500058bff3c848299dfb0bb9b20961f8,
title = "Stabilisation and solidification of steel industry sludge",
abstract = "This report presents the research done on the treatment of steel industry sludge by the solidification /stabilisation (S/S) process using desilicated fly ash (DFA) and lime as the binding agents. The sludge was characterized using X-ray fluorescence, X-ray diffraction, and geotechnical techniques. The main oxides in the sludge were iron oxide and zinc oxide. Unconfined compressed strength of 0.49 MPa was achieved with 40{\%} DFA: lime (70:30) addition, at pH of 12.88. The leachability of Fe was reduced by 94{\%} and Zn by 98.6{\%}. The rate of lime consumption during stabilisation was best described with 2nd order kinetics plot. {\circledC} 2017 IEEE.",
author = "T. Falayi and F. Ntuli",
note = "Export Date: 19 June 2018",
year = "2018",
doi = "10.1109/HNICEM.2017.8269539",
language = "English",
pages = "1--4",

}

Stabilisation and solidification of steel industry sludge. / Falayi, T.; Ntuli, F.

2018. 1-4.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Stabilisation and solidification of steel industry sludge

AU - Falayi, T.

AU - Ntuli, F.

N1 - Export Date: 19 June 2018

PY - 2018

Y1 - 2018

N2 - This report presents the research done on the treatment of steel industry sludge by the solidification /stabilisation (S/S) process using desilicated fly ash (DFA) and lime as the binding agents. The sludge was characterized using X-ray fluorescence, X-ray diffraction, and geotechnical techniques. The main oxides in the sludge were iron oxide and zinc oxide. Unconfined compressed strength of 0.49 MPa was achieved with 40% DFA: lime (70:30) addition, at pH of 12.88. The leachability of Fe was reduced by 94% and Zn by 98.6%. The rate of lime consumption during stabilisation was best described with 2nd order kinetics plot. © 2017 IEEE.

AB - This report presents the research done on the treatment of steel industry sludge by the solidification /stabilisation (S/S) process using desilicated fly ash (DFA) and lime as the binding agents. The sludge was characterized using X-ray fluorescence, X-ray diffraction, and geotechnical techniques. The main oxides in the sludge were iron oxide and zinc oxide. Unconfined compressed strength of 0.49 MPa was achieved with 40% DFA: lime (70:30) addition, at pH of 12.88. The leachability of Fe was reduced by 94% and Zn by 98.6%. The rate of lime consumption during stabilisation was best described with 2nd order kinetics plot. © 2017 IEEE.

U2 - 10.1109/HNICEM.2017.8269539

DO - 10.1109/HNICEM.2017.8269539

M3 - Paper

SP - 1

EP - 4

ER -