پديد آورنده :
بهمني حيدر آبادي، محمد امين
عنوان :
بهبود توليد اتانول زيستي از مواد زائد ليگنوسلولزي با استفاده از پيش فرآوري هضم بي هوازي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
مهندسي شيمي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي
صفحه شمار :
چهارده، 93ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
كيخسرو كريمي، اكرم زماني
توصيفگر ها :
بيواتانول , بيوگاز , پيش فرآوري زيستي , ضايعات ليگنوسلولزي
تاريخ نمايه سازي :
8/2/94
استاد داور :
محمد هادي جزيني، فاطمه بناء كاشاني
تاريخ ورود اطلاعات :
1396/09/26
رشته تحصيلي :
مهندسي شيمي
چكيده انگليسي :
95 Mohamad Amin Bahmani Haidarabadi ma bahmai@ce iut ac ir Date of submission January 14 2015 Department of Chemical Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language PersianSupervisors Keikhosro karimi karimi@cc iut ac ir Akram Zamani zamani akram@cc iut ac irAbstract Conversion of abundant lignocellulosic biomass to biofuels and replacing them with fossilfuels is a viable option to reduce greenhouse emissions It has been reported that cellulosic ethanoland ethanol produced from other biomass resources have the potential to cut greenhouse gasemissions by 86 Lignocellulosic materials such as agricultural residues e g wheat straw sugarcane bagasse corn stover forest products hardwood and softwood and dedicated crops switchgrass salix are renewable sources of energy These wastes are mostly left in the field causing a disposal problem for the local producing agro industries However lignocellulosicbiomass actually has a great potential as feedstock for production of more value added productssuch as low price chemicals e g xylitol xylose glucose furfural fuels biofibres ruminant feed biopulp or even for enzyme production In this study Biological pretreatment of three types oflignocelluloses including rice straw hardwood sycamore and softwood pine with anaerobicdigestion AD was investigated for efficient ethanol production The effects of ultrasonication onAD treated and untreated lignocelluloses were studied prior to their separated hydrolysis andfermentation SHF The pretreated and untreated samples were analyzed using CompositionalAnalysis Fourier Transform Infrared Spectroscopy FTIR and Scanning Electron Microscopy SEM methods The biological pretreatment significantly reduced the hemicellulose content of thesamples and showed a slight reduction in the amount of cellulose with no effect on the lignincontent In the case of the rice straw holocellulose loss was more than the case of sycamore andpine woods The highest yield of glucose after 72h enzymatic hydrolysis was 65 83 obtainedafter pretreatment of the rice straw with AD process followed by ultrasonication at 60 C for 1h After 24h fermentation the yield of ethanol for pretreated rice straw at the best conditions was69 55 while one it was 44 approximately for untreated Furthermore the pretreatment ofsycamore and pine woods at the best conditions improved the ethanol yield up to 38 7 and30 6 respectively Keywords Biological Pretreatment Lignocelluloses Anaerobic Digestion ethanol
استاد راهنما :
كيخسرو كريمي، اكرم زماني
استاد داور :
محمد هادي جزيني، فاطمه بناء كاشاني
