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Chemical, electrochemical and spectral characterization of water leachates from biomass / Lei Deng in Industrial & engineering chemistry research, Vol. 51 N° 48 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15710–15719 Titre : Chemical, electrochemical and spectral characterization of water leachates from biomass Type de document : texte imprimé Auteurs : Lei Deng, Auteur ; Defu Che, Auteur Année de publication : 2013 Article en page(s) : pp. 15710–15719 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Electrochemical  Leachates  Biomass Résumé : To develop pretreatment strategies for better industrial utilization of biomass materials, six types of biomass were washed with deionized water at 303, 333, and 363 K, and the leachate was characterized by chemical, electrochemical, and spectral analysis. The results show that K+ is the most abundant cation in the leachates. An increase in the washing temperature leads to an increase in the cation concentration mainly because of the increment of K+. The chemical oxygen demand (COD) and the charge difference between inorganic cations and anions for leachate suggest that, in addition to inorganic ions, a few organic compounds and organic anions are released from biomass during washing. Fourier transform infrared (FTIR) spectra of the dry leachate samples reveal that carbohydrates and carboxylates are the major components of the organic compounds and organic salts, respectively. Except for the leachate of rice straw, the charge difference and COD increase with increasing washing temperature because of the increment of carboxylates for all of the other leachates. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie301468b [article] Chemical, electrochemical and spectral characterization of water leachates from biomass [texte imprimé] / Lei Deng, Auteur ; Defu Che, Auteur . - 2013 . - pp. 15710–15719. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15710–15719 Mots-clés : Electrochemical  Leachates  Biomass Résumé : To develop pretreatment strategies for better industrial utilization of biomass materials, six types of biomass were washed with deionized water at 303, 333, and 363 K, and the leachate was characterized by chemical, electrochemical, and spectral analysis. The results show that K+ is the most abundant cation in the leachates. An increase in the washing temperature leads to an increase in the cation concentration mainly because of the increment of K+. The chemical oxygen demand (COD) and the charge difference between inorganic cations and anions for leachate suggest that, in addition to inorganic ions, a few organic compounds and organic anions are released from biomass during washing. Fourier transform infrared (FTIR) spectra of the dry leachate samples reveal that carbohydrates and carboxylates are the major components of the organic compounds and organic salts, respectively. Except for the leachate of rice straw, the charge difference and COD increase with increasing washing temperature because of the increment of carboxylates for all of the other leachates. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie301468b