en Effect of Thermal Hydrolysis on Anaerobic Digester Performance تخصصي Special پژوهشي Research Anaerobic digestion (AD) has been recently introduced as a promising technology for producing bioenergy around the world. Due to its especial characteristics, solid waste could be considered as a proper feedstock in the digester. Retention time (RT) and rate of biogas production are two major parameters affecting the efficiency of the process. The AD procedure of biogas production consists of hydrolysis, acid genesis, acetogenesis, and methanogens such that feeding materials would be processed inside the digester. The experiments have been carried out using two bioreactors with volume of 5 liters in mesopihilic conditions at 35 ± 1°C. The purpose of this study is to accelerate the hydrolysis step. Pretreatment of the waste is accomplished using thermal hydrolysis in conditions of 155°C and 5 atm. The results of this research indicated 33.33% decrease in RT and 154.87% increase in amount of biogas production using pretreatment process in comparison without considering it. Anaerobic digestion (AD) has been recently introduced as a promising technology for producing bioenergy around the world. Due to its especial characteristics, solid waste could be considered as a proper feedstock in the digester. Retention time (RT) and rate of biogas production are two major parameters affecting the efficiency of the process. The AD procedure of biogas production consists of hydrolysis, acid genesis, acetogenesis, and methanogens such that feeding materials would be processed inside the digester. The experiments have been carried out using two bioreactors with volume of 5 liters in mesopihilic conditions at 35 ± 1°C. The purpose of this study is to accelerate the hydrolysis step. Pretreatment of the waste is accomplished using thermal hydrolysis in conditions of 155°C and 5 atm. The results of this research indicated 33.33% decrease in RT and 154.87% increase in amount of biogas production using pretreatment process in comparison without considering it. Anaerobic Digester, Organic solid waste, Thermal Hydrolysis, Biogas Anaerobic Digester, Organic solid waste, Thermal Hydrolysis, Biogas 7 13 http://ijurm.imo.org.ir/browse.php?a_code=A-10-466-2&slc_lang=en&sid=1 Mohammad Ali Abdoli محمد علی عبدلی 10031947532846001876 10031947532846001876 No دانشگاه تهران Leila Amiri لیلا امیری 10031947532846001877 10031947532846001877 No دانشگاه تهران Naser Mehrdadi ناصر مهردادی 10031947532846001878 10031947532846001878 No دانشگاه تهران Zohreh Tarahomi زهره ترحمی ztarahomy5011@yahoo.com 10031947532846001879 10031947532846001879 Yes