Modified sequential extraction for biochar and petroleum coke: Metal release potential and its environmental implications

Konstantin von Gunten; Md Samrat Alam; Magdalena Hubmann; Yong Sik Ok; Kurt O. Konhauser; Daniel S. Alessi

doi:10.1016/j.biortech.2017.03.162

Modified sequential extraction for biochar and petroleum coke: Metal release potential and its environmental implications

Konstantin von Gunten, Md Samrat Alam, Magdalena Hubmann, Yong Sik Ok, Kurt O. Konhauser, Daniel S. Alessi

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

A modified Community Bureau of Reference (CBR) sequential extraction method was tested to assess the composition of untreated pyrogenic carbon (biochar) and oil sands petroleum coke. Wood biochar samples were found to contain lower concentrations of metals, but had higher fractions of easily mobilized alkaline earth and transition metals. Sewage sludge biochar was determined to be less recalcitrant and had higher total metal concentrations, with most of the metals found in the more resilient extraction fractions (oxidizable, residual). Petroleum coke was the most stable material, with a similar metal distribution pattern as the sewage sludge biochar. The applied sequential extraction method represents a suitable technique to recover metals from these materials, and is a valuable tool in understanding the metal retaining and leaching capability of various biochar types and carbonaceous petroleum coke samples.

Original language	English
Pages (from-to)	106-110
Number of pages	5
Journal	Bioresource technology
Volume	236
DOIs	https://doi.org/10.1016/j.biortech.2017.03.162
Publication status	Published - 2017
Externally published	Yes

Keywords

Agriculture
Biochar digestion
Contaminants
Metal release
Sequential extraction

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2017.03.162

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title = "Modified sequential extraction for biochar and petroleum coke: Metal release potential and its environmental implications",

abstract = "A modified Community Bureau of Reference (CBR) sequential extraction method was tested to assess the composition of untreated pyrogenic carbon (biochar) and oil sands petroleum coke. Wood biochar samples were found to contain lower concentrations of metals, but had higher fractions of easily mobilized alkaline earth and transition metals. Sewage sludge biochar was determined to be less recalcitrant and had higher total metal concentrations, with most of the metals found in the more resilient extraction fractions (oxidizable, residual). Petroleum coke was the most stable material, with a similar metal distribution pattern as the sewage sludge biochar. The applied sequential extraction method represents a suitable technique to recover metals from these materials, and is a valuable tool in understanding the metal retaining and leaching capability of various biochar types and carbonaceous petroleum coke samples.",

keywords = "Agriculture, Biochar digestion, Contaminants, Metal release, Sequential extraction",

author = "{von Gunten}, Konstantin and Alam, {Md Samrat} and Magdalena Hubmann and Ok, {Yong Sik} and Konhauser, {Kurt O.} and Alessi, {Daniel S.}",

note = "Funding Information: The authors thank the Alberta Biochar Initiative for the biochar samples. The authors also thank Jonathan Curtis from the Lipid Chemistry Group, and Karlis Muehlenbachs and Olga Levner from the Stable Isotope Laboratory at the University of Alberta, for access to equipment. Comments from two anonymous reviewers greatly improved the manuscript. This work was supported by Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery grants to D.S.A. (RGPIN-04134) and K.O.K. (RGPIN-165831). Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

doi = "10.1016/j.biortech.2017.03.162",

language = "English",

volume = "236",

pages = "106--110",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Modified sequential extraction for biochar and petroleum coke

T2 - Metal release potential and its environmental implications

AU - von Gunten, Konstantin

AU - Alam, Md Samrat

AU - Hubmann, Magdalena

AU - Ok, Yong Sik

AU - Konhauser, Kurt O.

AU - Alessi, Daniel S.

N1 - Funding Information: The authors thank the Alberta Biochar Initiative for the biochar samples. The authors also thank Jonathan Curtis from the Lipid Chemistry Group, and Karlis Muehlenbachs and Olga Levner from the Stable Isotope Laboratory at the University of Alberta, for access to equipment. Comments from two anonymous reviewers greatly improved the manuscript. This work was supported by Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery grants to D.S.A. (RGPIN-04134) and K.O.K. (RGPIN-165831). Publisher Copyright: © 2017 Elsevier Ltd

PY - 2017

Y1 - 2017

N2 - A modified Community Bureau of Reference (CBR) sequential extraction method was tested to assess the composition of untreated pyrogenic carbon (biochar) and oil sands petroleum coke. Wood biochar samples were found to contain lower concentrations of metals, but had higher fractions of easily mobilized alkaline earth and transition metals. Sewage sludge biochar was determined to be less recalcitrant and had higher total metal concentrations, with most of the metals found in the more resilient extraction fractions (oxidizable, residual). Petroleum coke was the most stable material, with a similar metal distribution pattern as the sewage sludge biochar. The applied sequential extraction method represents a suitable technique to recover metals from these materials, and is a valuable tool in understanding the metal retaining and leaching capability of various biochar types and carbonaceous petroleum coke samples.

AB - A modified Community Bureau of Reference (CBR) sequential extraction method was tested to assess the composition of untreated pyrogenic carbon (biochar) and oil sands petroleum coke. Wood biochar samples were found to contain lower concentrations of metals, but had higher fractions of easily mobilized alkaline earth and transition metals. Sewage sludge biochar was determined to be less recalcitrant and had higher total metal concentrations, with most of the metals found in the more resilient extraction fractions (oxidizable, residual). Petroleum coke was the most stable material, with a similar metal distribution pattern as the sewage sludge biochar. The applied sequential extraction method represents a suitable technique to recover metals from these materials, and is a valuable tool in understanding the metal retaining and leaching capability of various biochar types and carbonaceous petroleum coke samples.

KW - Agriculture

KW - Biochar digestion

KW - Contaminants

KW - Metal release

KW - Sequential extraction

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ER -

Modified sequential extraction for biochar and petroleum coke: Metal release potential and its environmental implications

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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