Cr(VI)/Cr(III) and As(V)/As(III) ratio assessments in Jordanian spent oil shale produced by aerobic combustion and anaerobic pyrolysis

Autoren

Tayel El-Hasan
Wojciech Szczerba
Gunter Buzanich
Martin Radtke
Heinrich Riesemeier
Michael Kersten

Autoren-URL

https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000296756500044&DestLinkType=FullRecord&DestApp=WOS_CPL

DOI

10.1021/es200695e

Externe Identifier

Clarivate Analytics Document Solution ID: 844OI
PubMed Identifier: 21970732

ISSN

0013-936X

Ausgabe der Veröffentlichung

22

Zeitschrift

ENVIRONMENTAL SCIENCE & TECHNOLOGY

Paginierung

9799 - 9805

Datum der Veröffentlichung

2011

Status

Published

Titel

Cr(VI)/Cr(III) and As(V)/As(III) Ratio Assessments in Jordanian Spent Oil Shale Produced by Aerobic Combustion and Anaerobic Pyrolysis

Sub types

Article

Ausgabe der Zeitschrift

45

Datenquelle: Web of Science (Lite)

Autoren

Tayel El-Hasan
Wojciech Szczerba
Günter Buzanich
Martin Radtke
Heinrich Riesemeier
Michael Kersten

DOI

10.1021/es200695e

eISSN

1520-5851

ISSN

0013-936X

Ausgabe der Veröffentlichung

22

Zeitschrift

Environmental Science & Technology

Sprache

en

Online publication date

2011

Paginierung

9799 - 9805

Datum der Veröffentlichung

2011

Status

Published

Herausgeber

American Chemical Society (ACS)

Herausgeber URL

http://dx.doi.org/10.1021/es200695e

Datum der Datenerfassung

2023

Titel

Cr(VI)/Cr(III) and As(V)/As(III) Ratio Assessments in Jordanian Spent Oil Shale Produced by Aerobic Combustion and Anaerobic Pyrolysis

Ausgabe der Zeitschrift

45

Datenquelle: Crossref

Abstract

With the increase in the awareness of the public in the environmental impact of oil shale utilization, it is of interest to reveal the mobility of potentially toxic trace elements in spent oil shale. Therefore, the Cr and As oxidation state in a representative Jordanian oil shale sample from the El-Lajjoun area were investigated upon different lab-scale furnace treatments. The anaerobic pyrolysis was performed in a retort flushed by nitrogen gas at temperatures in between 600 and 800 °C (pyrolytic oil shale, POS). The aerobic combustion was simply performed in porcelain cups heated in a muffle furnace for 4 h at temperatures in between 700 and 1000 °C (burned oil shale, BOS). The high loss-on-ignition in the BOS samples of up to 370 g kg(-1) results from both calcium carbonate and organic carbon degradation. The LOI leads to enrichment in the Cr concentrations from 480 mg kg(-1) in the original oil shale up to 675 mg kg(-1) in the ≥ 850 °C BOS samples. Arsenic concentrations were not much elevated beyond that in the average shale standard (13 mg kg(-1)). Synchrotron-based X-ray absorption near-edge structure (XANES) analysis revealed that within the original oil shale the oxidation states of Cr and As were lower than after its aerobic combustion. Cr(VI) increased from 0% in the untreated or pyrolyzed oil shale up to 60% in the BOS ash combusted at 850 °C, while As(V) increased from 64% in the original oil shale up to 100% in the BOS ash at 700 °C. No Cr was released from original oil shale and POS products by the European compliance leaching test CEN/TC 292 EN 12457-1 (1:2 solid/water ratio, 24 h shaking), whereas leachates from BOS samples showed Cr release in the order of one mmol L(-1). The leachable Cr content is dominated by chromate as revealed by catalytic adsorptive stripping voltammetry (CAdSV) which could cause harmful contamination of surface and groundwater in the semiarid environment of Jordan.

Addresses

Geology Department, Faculty of Science, Taibah University, Al-Madinah Al-Munawwarah, KSA.

Autoren

Tayel El-Hasan
Wojciech Szczerba
Günter Buzanich
Martin Radtke
Heinrich Riesemeier
Michael Kersten

DOI

10.1021/es200695e

eISSN

1520-5851

Externe Identifier

PubMed Identifier: 21970732

Open access

false

ISSN

0013-936X

Ausgabe der Veröffentlichung

22

Zeitschrift

Environmental science & technology

Schlüsselwörter

Arsenic
Chromium
Petroleum
Oxidation-Reduction
Jordan
Hot Temperature

Sprache

eng

Medium

Print-Electronic

Online publication date

2011

Paginierung

9799 - 9805

Datum der Veröffentlichung

2011

Status

Published

Datum der Datenerfassung

2011

Titel

Cr(VI)/Cr(III) and As(V)/As(III) ratio assessments in Jordanian spent oil shale produced by aerobic combustion and Anaerobic Pyrolysis.

Sub types

Research Support, Non-U.S. Gov't
Journal Article

Ausgabe der Zeitschrift

45

Datenquelle: Europe PubMed Central

Abstract

With the increase in the awareness of the public in the environmental impact of oil shale utilization, it is of interest to reveal the mobility of potentially toxic trace elements in spent oil shale. Therefore, the Cr and As oxidation state in a representative Jordanian oil shale sample from the El-Lajjoun area were investigated upon different lab-scale furnace treatments. The anaerobic pyrolysis was performed in a retort flushed by nitrogen gas at temperatures in between 600 and 800 °C (pyrolytic oil shale, POS). The aerobic combustion was simply performed in porcelain cups heated in a muffle furnace for 4 h at temperatures in between 700 and 1000 °C (burned oil shale, BOS). The high loss-on-ignition in the BOS samples of up to 370 g kg(-1) results from both calcium carbonate and organic carbon degradation. The LOI leads to enrichment in the Cr concentrations from 480 mg kg(-1) in the original oil shale up to 675 mg kg(-1) in the ≥ 850 °C BOS samples. Arsenic concentrations were not much elevated beyond that in the average shale standard (13 mg kg(-1)). Synchrotron-based X-ray absorption near-edge structure (XANES) analysis revealed that within the original oil shale the oxidation states of Cr and As were lower than after its aerobic combustion. Cr(VI) increased from 0% in the untreated or pyrolyzed oil shale up to 60% in the BOS ash combusted at 850 °C, while As(V) increased from 64% in the original oil shale up to 100% in the BOS ash at 700 °C. No Cr was released from original oil shale and POS products by the European compliance leaching test CEN/TC 292 EN 12457-1 (1:2 solid/water ratio, 24 h shaking), whereas leachates from BOS samples showed Cr release in the order of one mmol L(-1). The leachable Cr content is dominated by chromate as revealed by catalytic adsorptive stripping voltammetry (CAdSV) which could cause harmful contamination of surface and groundwater in the semiarid environment of Jordan.

Autoren

Tayel El-Hasan
Wojciech Szczerba
Günter Buzanich
Martin Radtke
Heinrich Riesemeier
Michael Kersten

Autoren-URL

https://www.ncbi.nlm.nih.gov/pubmed/21970732

DOI

10.1021/es200695e

eISSN

1520-5851

Ausgabe der Veröffentlichung

22

Zeitschrift

Environ Sci Technol

Schlüsselwörter

Arsenic
Chromium
Hot Temperature
Jordan
Oxidation-Reduction
Petroleum

Sprache

eng

Country

United States

Paginierung

9799 - 9805

Datum der Veröffentlichung

2011

Status

Published

Datum, an dem der Datensatz öffentlich gemacht wurde

2012

Titel

Cr(VI)/Cr(III) and As(V)/As(III) ratio assessments in Jordanian spent oil shale produced by aerobic combustion and Anaerobic Pyrolysis.

Sub types

Journal Article
Research Support, Non-U.S. Gov't

Ausgabe der Zeitschrift

45

Datenquelle: PubMed

Cr(VI)/Cr(III) and As(V)/As(III) ratio assessments in Jordanian spent oil shale produced by aerobic combustion and anaerobic pyrolysis

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