Gao, Qiuju, Budarin, Vitaliy L., Cieplik, Mariusz et al. (2 more authors) (2016) PCDDs, PCDFs and PCNs in products of microwave-assisted pyrolysis of woody biomass - Distribution among solid, Liquid and gaseous phases and effects of material composition. CHEMOSPHERE. pp. 193-199. ISSN 0045-6535
Abstract
Microwave-assisted pyrolysis (MAP) of lignocellulosic biomass is a technique that could potentially be used to produce and upgrade renewable energy carriers. However, there is no available information about the formation of dioxins and other organic pollutants in MAP treatment of woody biomass. In this study, MAP experiments were conducted in lab-scale using virgin softwood, bark, and impregnated wood as feedstocks. The non-condensable gas, liquid (fractionated into aqueous and oil phases), and char fractions generated during pyrolysis were collected and analysed for polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and naphthalenes (PCNs). The concentrations of PCDDs, PCDFs and PCNs in the pyrolysis products ranged from 0.52 to 43.7 ng kg-1. All investigated compound groups were most abundant in the oil fraction, accounting for up to 68% (w/w) of the total concentrations. The highest PCDD, PCDF and PCN concentrations were found from the pyrolysis of bark, which has relatively high contents of chlorine and mineral matter, followed by impregnated wood, which contains organic and metal-based preservatives. The homologue profiles of all three compound groups were dominated by the less chlorinated homologues. The homologue abundance decreased as the degree of chlorination increased. This trend was observed for all three feedstocks.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2015 The Authors. |
Keywords: | Lignocellulosic biomass,Persistent organic pollutants,Polychlorinated dibenzo-p-dioxins,Polychlorinated dibenzofurans,Polychlorinated naphthalenes,Thermochemical conversion |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 07 Aug 2019 11:40 |
Last Modified: | 17 Oct 2024 08:41 |
Published Version: | https://doi.org/10.1016/j.chemosphere.2015.11.110 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.chemosphere.2015.11.110 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:149444 |
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