A Detailed Laboratory Scale Feasibility Study of Recovering Metallic Iron and Chromium from Chromium Contaminated Soils

Jay Meegoda, Wiwat Kamolpornwijit, Janitha Hewa Batagoda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

One of potential technologies applicable to chromium-contaminated soils is thermal treatment, for example, the vitrification. Literature showed the reduction of hexavalent to trivalent chromium at high temperature, thus converting highly toxic and water-soluble compound into less toxic and water-insoluble compound. At high temperature, such as that of vitrification, both iron and chromium oxides can experience stepwise reduction to potentially recyclable metallic iron and chromium under reducing environment. Hence the objective of this study is to investigate the feasibility to reduce iron oxides in chromium-contaminated soils. Using solid carbon as reducing agent, the reduction to metallic iron was observable at 1200 °C. At 1400 °C, the addition of 15 % carbon by weight is required for complete reduction. The reduction is very rapid at this temperature. The information on reduction at high temperature should prove useful in providing background information in thermal treatment and also the potential recycling of metal from contaminated soils.

Original languageEnglish (US)
Pages (from-to)437-444
Number of pages8
JournalIndian Geotechnical Journal
Volume47
Issue number4
DOIs
StatePublished - Dec 1 2017

Fingerprint

feasibility study
chromium
Chromium
Iron
Soils
iron
vitrification
Vitrification
Heat treatment
Temperature
Carbon
carbon
Reducing agents
Iron oxides
iron oxide
laboratory
contaminated soil
Recycling
Water
oxide

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

Keywords

  • Chromium contaminated soil
  • Thermal treatment
  • Vitrification

Cite this

@article{5530db83a45a4aaa9efb9465bbb486a1,
title = "A Detailed Laboratory Scale Feasibility Study of Recovering Metallic Iron and Chromium from Chromium Contaminated Soils",
abstract = "One of potential technologies applicable to chromium-contaminated soils is thermal treatment, for example, the vitrification. Literature showed the reduction of hexavalent to trivalent chromium at high temperature, thus converting highly toxic and water-soluble compound into less toxic and water-insoluble compound. At high temperature, such as that of vitrification, both iron and chromium oxides can experience stepwise reduction to potentially recyclable metallic iron and chromium under reducing environment. Hence the objective of this study is to investigate the feasibility to reduce iron oxides in chromium-contaminated soils. Using solid carbon as reducing agent, the reduction to metallic iron was observable at 1200 °C. At 1400 °C, the addition of 15 {\%} carbon by weight is required for complete reduction. The reduction is very rapid at this temperature. The information on reduction at high temperature should prove useful in providing background information in thermal treatment and also the potential recycling of metal from contaminated soils.",
keywords = "Chromium contaminated soil, Thermal treatment, Vitrification",
author = "Jay Meegoda and Wiwat Kamolpornwijit and Batagoda, {Janitha Hewa}",
year = "2017",
month = "12",
day = "1",
doi = "https://doi.org/10.1007/s40098-016-0208-4",
language = "English (US)",
volume = "47",
pages = "437--444",
journal = "Indian Geotechnical Journal",
issn = "0046-8983",
publisher = "Indian Geotechnical Society",
number = "4",

}

A Detailed Laboratory Scale Feasibility Study of Recovering Metallic Iron and Chromium from Chromium Contaminated Soils. / Meegoda, Jay; Kamolpornwijit, Wiwat; Batagoda, Janitha Hewa.

In: Indian Geotechnical Journal, Vol. 47, No. 4, 01.12.2017, p. 437-444.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A Detailed Laboratory Scale Feasibility Study of Recovering Metallic Iron and Chromium from Chromium Contaminated Soils

AU - Meegoda, Jay

AU - Kamolpornwijit, Wiwat

AU - Batagoda, Janitha Hewa

PY - 2017/12/1

Y1 - 2017/12/1

N2 - One of potential technologies applicable to chromium-contaminated soils is thermal treatment, for example, the vitrification. Literature showed the reduction of hexavalent to trivalent chromium at high temperature, thus converting highly toxic and water-soluble compound into less toxic and water-insoluble compound. At high temperature, such as that of vitrification, both iron and chromium oxides can experience stepwise reduction to potentially recyclable metallic iron and chromium under reducing environment. Hence the objective of this study is to investigate the feasibility to reduce iron oxides in chromium-contaminated soils. Using solid carbon as reducing agent, the reduction to metallic iron was observable at 1200 °C. At 1400 °C, the addition of 15 % carbon by weight is required for complete reduction. The reduction is very rapid at this temperature. The information on reduction at high temperature should prove useful in providing background information in thermal treatment and also the potential recycling of metal from contaminated soils.

AB - One of potential technologies applicable to chromium-contaminated soils is thermal treatment, for example, the vitrification. Literature showed the reduction of hexavalent to trivalent chromium at high temperature, thus converting highly toxic and water-soluble compound into less toxic and water-insoluble compound. At high temperature, such as that of vitrification, both iron and chromium oxides can experience stepwise reduction to potentially recyclable metallic iron and chromium under reducing environment. Hence the objective of this study is to investigate the feasibility to reduce iron oxides in chromium-contaminated soils. Using solid carbon as reducing agent, the reduction to metallic iron was observable at 1200 °C. At 1400 °C, the addition of 15 % carbon by weight is required for complete reduction. The reduction is very rapid at this temperature. The information on reduction at high temperature should prove useful in providing background information in thermal treatment and also the potential recycling of metal from contaminated soils.

KW - Chromium contaminated soil

KW - Thermal treatment

KW - Vitrification

UR - http://www.scopus.com/inward/record.url?scp=85035240612&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85035240612&partnerID=8YFLogxK

U2 - https://doi.org/10.1007/s40098-016-0208-4

DO - https://doi.org/10.1007/s40098-016-0208-4

M3 - Article

VL - 47

SP - 437

EP - 444

JO - Indian Geotechnical Journal

JF - Indian Geotechnical Journal

SN - 0046-8983

IS - 4

ER -