Thermal stability of biochar and its effects on cadmium sorption capacity

Fangjie Qi; Yubo Yan; Dane Lamb; Ravi Naidu; Nanthi S. Bolan; Yanju Liu; Yong Sik Ok; Scott W. Donne; Kirk T. Semple

doi:10.1016/j.biortech.2017.07.033

Thermal stability of biochar and its effects on cadmium sorption capacity

Fangjie Qi, Yubo Yan, Dane Lamb, Ravi Naidu, Nanthi S. Bolan, Yanju Liu, Yong Sik Ok, Scott W. Donne, Kirk T. Semple

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

81 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	48-56
Number of pages	9
Journal	Bioresource technology
Volume	246
DOIs	https://doi.org/10.1016/j.biortech.2017.07.033
Publication status	Published - 2017 Dec

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

Keywords

Biochar
Cadmium
Composition
Sorption
Stability

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.2017.07.033

Cite this

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title = "Thermal stability of biochar and its effects on cadmium sorption capacity",

abstract = "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.",

keywords = "Biochar, Cadmium, Composition, Sorption, Stability",

author = "Fangjie Qi and Yubo Yan and Dane Lamb and Ravi Naidu and Bolan, {Nanthi S.} and Yanju Liu and Ok, {Yong Sik} and Donne, {Scott W.} and Semple, {Kirk T.}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = dec,

doi = "10.1016/j.biortech.2017.07.033",

language = "English",

volume = "246",

pages = "48--56",

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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.

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 - Cadmium

KW - Composition

KW - Sorption

KW - Stability

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DO - 10.1016/j.biortech.2017.07.033

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SN - 0960-8524

VL - 246

SP - 48

EP - 56

JO - Bioresource technology

JF - Bioresource technology

ER -

Thermal stability of biochar and its effects on cadmium sorption capacity

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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