Impact of Miscanthus x giganteus senescence times on fast pyrolysis bio-oil quality.

Autor: Mos M; Aberystwyth University, IBERS, Gogerddan, Aberystwyth SY23 3EB, United Kingdom., Banks SW, Nowakowski DJ, Robson PR, Bridgwater AV, Donnison IS
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2013 Feb; Vol. 129, pp. 335-42. Date of Electronic Publication: 2012 Nov 29.
DOI: 10.1016/j.biortech.2012.11.069
Abstrakt: In this study the impact of senescence and harvest time in Miscanthus on the quality of fast pyrolysis liquid (bio-oil) was investigated. Bio-oil was produced using a 1 kg h(-1) fast pyrolysis reactor to obtain a quantity of bio-oil comparable with existing industrial reactors. Bio-oil stability was measured using viscosity, water content, pH and heating value changes under specific conditions. Plant developmental characteristics were significantly different (P≤0.05) between all harvest points. The stage of crop senescence was correlated with nutrient remobilisation (N, P, K; r2=0.9043, r2=0.9920, r2=0.9977 respectively) and affected bio-oil quality. Harvest time and senescence impacted bio-oil quality and stability. For fast pyrolysis processing of Miscanthus, the harvest time of Miscanthus can be extended to cover a wider harvest window whilst still maintaining bio-oil quality but this may impact mineral depletion in, and long term sustainability of, the crop unless these minerals can be recycled.
(Copyright © 2012 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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