Organic compounds leached from fast pyrolysis mallee leaf and bark biochars
Characterization of organic compounds leached from biochars is essential in assessing the possible toxicity of the biochar to the soils’ biota. In this study the nature of the leached organic compounds from Mallee biochars, produced from pyrolysis of Mallee leaf and bark in a fluidised-bed pyrolyser...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/31529 |
| _version_ | 1848753405298737152 |
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| author | Lievens, Caroline Mourant, Daniel Gunawan, Richard Hu, Xun Wang, Yi |
| author_facet | Lievens, Caroline Mourant, Daniel Gunawan, Richard Hu, Xun Wang, Yi |
| author_sort | Lievens, Caroline |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Characterization of organic compounds leached from biochars is essential in assessing the possible toxicity of the biochar to the soils’ biota. In this study the nature of the leached organic compounds from Mallee biochars, produced from pyrolysis of Mallee leaf and bark in a fluidised-bed pyrolyser at 400 and 580 C was investigated. Light bio-oil compounds and aromatic organic compounds were investigated. The ‘bio-oil like’ light compounds from leaf and bark biochars ’surfaces were obtained after leaching the chars with a solvent, suitable to dissolve the respective bio-oils. GC/MS was implemented to investigate the leachates. Phenolics, which are potentially harmful toxins, were detected and their concentration shown to be dependent on the char’s origin and the char production temperature. Further, to simulate biochars amendment to soils, the chars were leached with water. The water-leached aromatic compounds from leaf and bark biochars were characterized using UV-fluorescence spectroscopy. Those results suggested that biochars contain leachable compounds of which the nature and amount is dependenton the biomass feedstock, pyrolysis temperature and leaching time. |
| first_indexed | 2025-11-14T08:23:59Z |
| format | Journal Article |
| id | curtin-20.500.11937-31529 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:23:59Z |
| publishDate | 2015 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-315292017-09-13T15:56:36Z Organic compounds leached from fast pyrolysis mallee leaf and bark biochars Lievens, Caroline Mourant, Daniel Gunawan, Richard Hu, Xun Wang, Yi Leaching Organic matter Biochar UV-fluorescence GC/MS Characterization of organic compounds leached from biochars is essential in assessing the possible toxicity of the biochar to the soils’ biota. In this study the nature of the leached organic compounds from Mallee biochars, produced from pyrolysis of Mallee leaf and bark in a fluidised-bed pyrolyser at 400 and 580 C was investigated. Light bio-oil compounds and aromatic organic compounds were investigated. The ‘bio-oil like’ light compounds from leaf and bark biochars ’surfaces were obtained after leaching the chars with a solvent, suitable to dissolve the respective bio-oils. GC/MS was implemented to investigate the leachates. Phenolics, which are potentially harmful toxins, were detected and their concentration shown to be dependent on the char’s origin and the char production temperature. Further, to simulate biochars amendment to soils, the chars were leached with water. The water-leached aromatic compounds from leaf and bark biochars were characterized using UV-fluorescence spectroscopy. Those results suggested that biochars contain leachable compounds of which the nature and amount is dependenton the biomass feedstock, pyrolysis temperature and leaching time. 2015 Journal Article http://hdl.handle.net/20.500.11937/31529 10.1016/j.chemosphere.2014.11.009 Elsevier restricted |
| spellingShingle | Leaching Organic matter Biochar UV-fluorescence GC/MS Lievens, Caroline Mourant, Daniel Gunawan, Richard Hu, Xun Wang, Yi Organic compounds leached from fast pyrolysis mallee leaf and bark biochars |
| title | Organic compounds leached from fast pyrolysis mallee leaf and bark biochars |
| title_full | Organic compounds leached from fast pyrolysis mallee leaf and bark biochars |
| title_fullStr | Organic compounds leached from fast pyrolysis mallee leaf and bark biochars |
| title_full_unstemmed | Organic compounds leached from fast pyrolysis mallee leaf and bark biochars |
| title_short | Organic compounds leached from fast pyrolysis mallee leaf and bark biochars |
| title_sort | organic compounds leached from fast pyrolysis mallee leaf and bark biochars |
| topic | Leaching Organic matter Biochar UV-fluorescence GC/MS |
| url | http://hdl.handle.net/20.500.11937/31529 |