Document Detail


Measuring the concentration of carboxylic acid groups in torrefied spruce wood.
MedLine Citation:
PMID:  22940339     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Torrefaction is moderate thermal treatment (∼200-300°C) to improve the energy density, handling and storage properties of biomass fuels. In biomass, carboxylic sites are partially responsible for its hygroscopic. These sites are degraded to varying extents during torrefaction. In this paper, we apply methylene blue sorption and potentiometric titration to measure the concentration of carboxylic acid groups in spruce wood torrefied for 30min at temperatures between 180 and 300°C. The results from both methods were applicable and the values agreed well. A decrease in the equilibrium moisture content at different humidity was also measured for the torrefied wood samples, which is in good agreement with the decrease in carboxylic acid sites. Thus both methods offer a means of directly measuring the decomposition of carboxylic groups in biomass during torrefaction as a valuable parameter in evaluating the extent of torrefaction which provides new information to the chemical changes occurring during torrefaction.
Authors:
Tooran Khazraie Shoulaifar; Nikolai Demartini; Ari Ivaska; Pedro Fardim; Mikko Hupa
Related Documents :
23958859 - Chemically activated formation of organic acids in reactions of the criegee intermediat...
19921179 - Identification in agrobacterium tumefaciens of the d-galacturonic acid dehydrogenase gene.
23020529 - Potential of marine lactic acid bacteria to ferment sargassum sp. for enhanced anticoag...
24070179 - Impact of caffeic acid addition on phenolic composition of tempranillo wines from diffe...
23497779 - Comparison of effects of serum n-3 to n-6 polyunsaturated fatty acid ratios on coronary...
10679199 - Molecular characterization reveals identity of microtubule-associated proteins map3 and...
16662029 - Compartmentation of sulfur metabolites in tobacco cells : use of efflux analysis.
15246759 - Differential dynamics of dinophysistoxins and pectenotoxins between blue mussel and com...
23848199 - Betulin-betulinic acid natural product based analogs as anti-cancer agents.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-27
Journal Detail:
Title:  Bioresource technology     Volume:  123C     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-9-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  338-343     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Åbo Akademi University, Process Chemistry Center, Piispankatu 8, FI-20500 Turku, Finland.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Efficient production of biodiesel from waste grease: One-pot esterification and transesterification ...
Next Document:  Chemometric formulation of bacterial consortium-AVS for improved decolorization of resonance-stabili...