A preliminary study of simultaneous lime treatment and dry digestion of smooth cordgrass for biogas production / Yuegan Liang in Chemical engineering journal, Vol. 174 N° 1 (Octobre 2011)  

Public ISBD [article]  inChemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp.175–181 Titre : A preliminary study of simultaneous lime treatment and dry digestion of smooth cordgrass for biogas production Type de document : texte imprimé Auteurs : Yuegan Liang, Auteur ; Zheng Zheng, Auteur ; Rimao Hua, Auteur Année de publication : 2012 Article en page(s) : pp.175–181 Note générale : Génie chimique Langues : Anglais (eng) Mots-clés : Smooth cordgrass Lime treatment Dry digestion Anaerobic inhibition First-order kinetic Résumé : The technical feasibility of simultaneous lime treatment and dry digestion (SLTD) of smooth cordgrass in a leaching bed reactor at 55 ± 1 °C is discussed. SLTD was carried out in a single reactor with a high initial biogas production rate and volatile solids (VS) removal rate. Biogas yields reached 283.9 and 192.7 mL/g VS, with 10.0 and 9.5 L/d maximum biogas production rates for asynchronous lime treatment and dry digestion (ALTD), and SLTD, respectively. VS removal efficiency reached 69.0% and 71.9% for ALTD and SLTD, respectively. 83.7% and 99% total biogas yields were obtained at the beginning of 30 days digestion for ALTD and SLTD, respectively. The biogas production rate constant gradually reduced with the reduction of easily biodegradable material. Inhibition of anaerobic bacteria occurred at the SLTD experiment during dry digestion, as shown by very little total volatile fatty acid and biogas production after day 20. Sodium, potassium and calcium ions were not responsible for SLTD inhibition. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711010291 [article] A preliminary study of simultaneous lime treatment and dry digestion of smooth cordgrass for biogas production [texte imprimé] / Yuegan Liang, Auteur ; Zheng Zheng, Auteur ; Rimao Hua, Auteur . - 2012 . - pp.175–181. Génie chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp.175–181 Mots-clés : Smooth cordgrass Lime treatment Dry digestion Anaerobic inhibition First-order kinetic Résumé : The technical feasibility of simultaneous lime treatment and dry digestion (SLTD) of smooth cordgrass in a leaching bed reactor at 55 ± 1 °C is discussed. SLTD was carried out in a single reactor with a high initial biogas production rate and volatile solids (VS) removal rate. Biogas yields reached 283.9 and 192.7 mL/g VS, with 10.0 and 9.5 L/d maximum biogas production rates for asynchronous lime treatment and dry digestion (ALTD), and SLTD, respectively. VS removal efficiency reached 69.0% and 71.9% for ALTD and SLTD, respectively. 83.7% and 99% total biogas yields were obtained at the beginning of 30 days digestion for ALTD and SLTD, respectively. The biogas production rate constant gradually reduced with the reduction of easily biodegradable material. Inhibition of anaerobic bacteria occurred at the SLTD experiment during dry digestion, as shown by very little total volatile fatty acid and biogas production after day 20. Sodium, potassium and calcium ions were not responsible for SLTD inhibition. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711010291

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