Optimisation of slow-pyrolysis process conditions to maximise char yield and heavy metal adsorption of biochar produced from different feedstocks

E. Hodgson; Alun James; S. Rao Ravella; S. Thomas Jones; W. Perkins; Joseph Gallagher

doi:10.1016/j.biortech.2016.05.009

Optimisation of slow-pyrolysis process conditions to maximise char yield and heavy metal adsorption of biochar produced from different feedstocks

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Optimisation of slow-pyrolysis process conditions to maximise char yield and heavy metal adsorption of biochar produced from different feedstocks. / Hodgson, E.; James, Alun; Rao Ravella, S. et al.

In: Bioresource Technology, Vol. 214, No. N/A, 01.08.2016, p. 574-581.

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

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@article{032e3ef95deb4dd69a0ad95dbadd5185,

title = "Optimisation of slow-pyrolysis process conditions to maximise char yield and heavy metal adsorption of biochar produced from different feedstocks",

abstract = "The objective of this work was to identify biomass feedstocks and optimum pyrolysis process conditions to produce a biochar capable of adsorbing metals from polluted groundwater. Taguchi experimental design was used to determine the effects of slow-pyrolysis process conditions on char yield and zinc adsorption. Treatments were repeated using six candidate feedstocks (Lolium perenne, Lolium perenne fibre, Miscanthus x giganteus, Salix viminalis, Fraxinus excelsior and Picea sitchensis) and the resultant chars were tested for metal adsorption performance. Chars produced from L. perenne and its extracted fibre displayed the greatest zinc adsorption performance and removed 83.27-92.96% respectively. Optimum process conditions in terms of both char yield and zinc adsorption performance were achieved from slow-pyrolysis at 300 °C for 2 h using a feedstock with a particle size of less than 1 mm.",

keywords = "Remediation, Zinc, Taguchi-method, Bio-refinery, Grasses, Metals, Heavy/chemistry, Water Pollutants/chemistry, Fraxinus/metabolism, Charcoal/chemistry, Biomass, Hot Temperature, Lolium/metabolism, Groundwater/chemistry, Adsorption, Bioreactors, Environmental Restoration and Remediation/methods, Environmental Pollution, Picea/metabolism, Salix/metabolism",

author = "E. Hodgson and Alun James and {Rao Ravella}, S. and {Thomas Jones}, S. and W. Perkins and Joseph Gallagher",

note = "Funding Information: The Authors wish to acknowledge collaborative research funding from DEFRA , The Coal Authority (UK) , The Environment Agency (UK) , Natural Resources Wales (Treatment of non-coal mine water, establishing new pilot trials using alternative technologies-WT0968) and the BEACON Biorefining Centre of Excellence , funded by the European Regional Development Fund through Welsh Government. Publisher Copyright: {\textcopyright} 2016 .",

year = "2016",

month = aug,

day = "1",

doi = "10.1016/j.biortech.2016.05.009",

language = "English",

volume = "214",

pages = "574--581",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier",

number = "N/A",

}

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TY - JOUR

T1 - Optimisation of slow-pyrolysis process conditions to maximise char yield and heavy metal adsorption of biochar produced from different feedstocks

AU - Hodgson, E.

AU - James, Alun

AU - Rao Ravella, S.

AU - Thomas Jones, S.

AU - Perkins, W.

AU - Gallagher, Joseph

N1 - Funding Information: The Authors wish to acknowledge collaborative research funding from DEFRA , The Coal Authority (UK) , The Environment Agency (UK) , Natural Resources Wales (Treatment of non-coal mine water, establishing new pilot trials using alternative technologies-WT0968) and the BEACON Biorefining Centre of Excellence , funded by the European Regional Development Fund through Welsh Government. Publisher Copyright: © 2016 .

PY - 2016/8/1

Y1 - 2016/8/1

N2 - The objective of this work was to identify biomass feedstocks and optimum pyrolysis process conditions to produce a biochar capable of adsorbing metals from polluted groundwater. Taguchi experimental design was used to determine the effects of slow-pyrolysis process conditions on char yield and zinc adsorption. Treatments were repeated using six candidate feedstocks (Lolium perenne, Lolium perenne fibre, Miscanthus x giganteus, Salix viminalis, Fraxinus excelsior and Picea sitchensis) and the resultant chars were tested for metal adsorption performance. Chars produced from L. perenne and its extracted fibre displayed the greatest zinc adsorption performance and removed 83.27-92.96% respectively. Optimum process conditions in terms of both char yield and zinc adsorption performance were achieved from slow-pyrolysis at 300 °C for 2 h using a feedstock with a particle size of less than 1 mm.

AB - The objective of this work was to identify biomass feedstocks and optimum pyrolysis process conditions to produce a biochar capable of adsorbing metals from polluted groundwater. Taguchi experimental design was used to determine the effects of slow-pyrolysis process conditions on char yield and zinc adsorption. Treatments were repeated using six candidate feedstocks (Lolium perenne, Lolium perenne fibre, Miscanthus x giganteus, Salix viminalis, Fraxinus excelsior and Picea sitchensis) and the resultant chars were tested for metal adsorption performance. Chars produced from L. perenne and its extracted fibre displayed the greatest zinc adsorption performance and removed 83.27-92.96% respectively. Optimum process conditions in terms of both char yield and zinc adsorption performance were achieved from slow-pyrolysis at 300 °C for 2 h using a feedstock with a particle size of less than 1 mm.

KW - Remediation

KW - Zinc

KW - Taguchi-method

KW - Bio-refinery

KW - Grasses

KW - Metals, Heavy/chemistry

KW - Water Pollutants/chemistry

KW - Fraxinus/metabolism

KW - Charcoal/chemistry

KW - Biomass

KW - Hot Temperature

KW - Lolium/metabolism