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Pre-treatment of straw and forest residue for biogas production; Recycling and Reuse of NMMO

N-methylmorpholine-N-oxide has shown a positive effect for the pretreatmentof lignocelluloses. Pretreatment by NMMO was developed to enhance thedigestibility of lignocellulosic biomass.Barely straw and forest residue were pretreated by N-methylmorpholine-Noxide(NMMO) prior to anaerobic digestion. The effectiveness of NMMOtreatmenton straw and forest residue was examined as well as the recycling andreuse of NMMO for the next pretreatment process. During the first experimentalseries pretreatments were performed at 90 °C for 3h and 30h, followed bydigestion of the pretreated material for 41 days. Low methane yield was found inthese experiments due to high organic loading rate. In the second series therecycling and reuse of NMMO was investigated on straw. The pretreatmentswere carried out at 90 °C for 30 hr and the recycling and reuse were performedin three times. After treatments with fresh, as well as 1, 2, 3 times recycledNMMO methane yield of 0.45, 0.42, 0.38 and 0.4 Nm3/kg VS were obtained. / Program: Masterutbildning i energi- och materialåtervinning - industriell bioteknik

Identiferoai:union.ndltd.org:UPSALLA1/oai:DiVA.org:hb-17539
Date January 2014
CreatorsZareibezini, Shahram, Yaparla, Ravi Sankar Reddy
PublisherHögskolan i Borås, Institutionen Ingenjörshögskolan, Högskolan i Borås, Institutionen Ingenjörshögskolan, University of Borås/School of Engineering
Source SetsDiVA Archive at Upsalla University
LanguageEnglish
Detected LanguageEnglish
TypeStudent thesis, info:eu-repo/semantics/bachelorThesis, text
Formatapplication/pdf
Rightsinfo:eu-repo/semantics/openAccess
RelationMasteruppsats,

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