Rights statement: This is the author’s version of a work that was accepted for publication in Bioresource Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Bioresource Technology, 246, 2017 DOI: 10.1016/j.biortech.2017.07.033
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Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Thermal stability of biochar and its effects on cadmium sorption capacity
AU - Qi, Fangjie
AU - Yan, Yubo
AU - Lamb, Dane
AU - Naidu, Ravi
AU - Bolan, Nanthi S
AU - Liu, Yanju
AU - Ok, Yong Sik
AU - Donne, Scott W.
AU - Semple, Kirk T
N1 - This is the author’s version of a work that was accepted for publication in Bioresource Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Bioresource Technology, 246, 2017 DOI: 10.1016/j.biortech.2017.07.033
PY - 2017/12
Y1 - 2017/12
N2 - In this study, the thermal stability of a wood shaving biochar (WS, 650 °C), a chicken litter biochar (CL, 550 °C) and an activated carbon (AC, 1100 °C) were evaluated by combustion at 375 °C for 24 h to remove the labile non-carbonized organic matter. Results showed that WS and CL biochars were not thermally stable and can lose most of the organic C during combustion. The combusted WS and CL biochars retained considerable amounts of negative charge and displayed higher sorption for Cd (from 5.46 to 68.9 mg/g for WS and from 48.5 to 60.9 mg/g for CL). The AC retained 76.5% of its original C and became more negatively chargely after combustion, but its sorption for Cd slightly decreased (from 18.5 to 14.9 mg/g). This study indicated that after potential burning in wildfires (200 - 500 °C), biochars could have higher sorption capacity for metals by remaining minerals.
AB - In this study, the thermal stability of a wood shaving biochar (WS, 650 °C), a chicken litter biochar (CL, 550 °C) and an activated carbon (AC, 1100 °C) were evaluated by combustion at 375 °C for 24 h to remove the labile non-carbonized organic matter. Results showed that WS and CL biochars were not thermally stable and can lose most of the organic C during combustion. The combusted WS and CL biochars retained considerable amounts of negative charge and displayed higher sorption for Cd (from 5.46 to 68.9 mg/g for WS and from 48.5 to 60.9 mg/g for CL). The AC retained 76.5% of its original C and became more negatively chargely after combustion, but its sorption for Cd slightly decreased (from 18.5 to 14.9 mg/g). This study indicated that after potential burning in wildfires (200 - 500 °C), biochars could have higher sorption capacity for metals by remaining minerals.
KW - Biochar
KW - Stability
KW - Composition
KW - Cadmium
KW - Sorption
U2 - 10.1016/j.biortech.2017.07.033
DO - 10.1016/j.biortech.2017.07.033
M3 - Journal article
VL - 246
SP - 48
EP - 56
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
ER -