16445

1728 دكتري

دكتري

مهندسي شيمي

اصفهان : دانشگاه صنعتي اصفهان

1399

چهارده، 102ص.: مصور، جدول، نمودار

مرتضي صادقي، كيخسرو كريمي

احمد محب، حميد زيلويي، محمدهادي جزيني، احمد اكبري

1400/02/28

كتابنامه

مهندسي شيمي

مهندسي شيمي

1400/02/28

2693833

Biofuel Production from Pretreated Sugarcane Bagasse with Sodium Alkali Salts and Biohydrogen Production in Anaerobic Membrane Bioreactor Mohammad Javad Nosratpour Department of Chemical Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree PhD language Farsi Supervisor Dr Morteza Sadeghi Dr Keikhosro KarimiAbstractIncreasing global population and industrialization in every corners of the earth makes energy an important issue Atthe moment this energy provides from fossil fuels But resources for fossil fuels are not last for more than fewdecades ahead Finding alternative sources of energy seems to be nessesary Biofuels knowing that they arerenewable and also does not emit extra CO2 to atmpsphere are good choices Among different biofuels biogas andethanol production attractes more attention In this study bagasse as an agricultural waste with high annualproduction used for biogas and ethanol production High recalcitrance of lignocelluloses such as sugarcane bagassemakes the pretreatment necessary Pretreatment increases the accessability of enzymes and microorganisms Sodiumcarbonate sodium sulfite and sodium acetate solutions in concentrations of 0 25 and 0 5 M in 100 140 and 180 oCwas used for pretreatment of sugarcane bagasse Enzymatic hydrolysis fermentation with Saccharomyces cerevisiaeand anerobic digestion was done on pretreated and raw bagasse The highest amount of biogas and ethanol were 239Nml gVS and 7 29 g l respectively which both obtained from bagasse pretreated with 0 5 M solution of sodiumcarbonate in 140 oC While the highest gasoline equivalent 190 2 l ton raw bagasse observed for bagasse pretreatedwith 0 5 M sodium sulfite solution in 140 oC Pretreatment with sodium acetate didn t had significant effect onbiogas and ethanol production from sugarcane bagasse FTIR and SEM was used to investigate the morphologicaland structural changes in pretreated bagasse Also two stage anerobic digestion using a membrane bioreactor wasapplied for produciotn of hydrogen from pretreated bagasse In the first stage the goal was production of volatilefatty acids as mch as possible In the process of volatile fatty acid production 13 2 gr volatile fatty acid was gainedper each 20 g pretreated substrate that used In the second stage in an anerobic membrane bioreactor mixture ofvolatile acids was used to produce hydrogen For hydraulic retention time of 10 days between 326 and 360 Nmlhydrogen and for hydraulic retention time of 5 days 444 Nml hydrogen produced Keywords Biofuel ethanol biogas biohydrogen alkali pretreatment hydrothermal pretreatment anerobic membranebioreactor

مرتضي صادقي، كيخسرو كريمي

احمد محب، حميد زيلويي، محمدهادي جزيني، احمد اكبري