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 | |
| Publication status | Published - 2017 Jan 1 |
| Externally published | Yes |
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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
Cite this
Modified sequential extraction for biochar and petroleum coke : Metal release potential and its environmental implications. / von Gunten, Konstantin; Alam, Md Samrat; Hubmann, Magdalena; Ok, Yong Sik; Konhauser, Kurt O.; Alessi, Daniel S.
In: Bioresource Technology, Vol. 236, 01.01.2017, p. 106-110.Research output: Contribution to journal › Article
}
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.
PY - 2017/1/1
Y1 - 2017/1/1
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
UR - http://www.scopus.com/inward/record.url?scp=85017161683&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85017161683&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2017.03.162
DO - 10.1016/j.biortech.2017.03.162
M3 - Article
C2 - 28391104
AN - SCOPUS:85017161683
VL - 236
SP - 106
EP - 110
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
ER -