Review in anaerobic digestion of food waste
Kefang He, Ying Liu, Longjin Tian, Wanyou He, Qunpeng Cheng
Abstract
Due to the special property of food waste (FW), anaerobic digestion of food waste is facing many challenges like foaming, acidification, ammonia nitrogen and (NH 4 + -N) inhibition which resulted in a low biogas yield. A better understanding on the problems exiting in the FW anaerobic digestion would enhance the bio-energy recovery and increase the stable operation. Meanwhile, to overcome the bottle necks, pretreatment, co-digestion and additives is proposed as well as the solutions to improve biogas yield in FW digestion system. At last, future research directions regarding FW anaerobic digestion were proposed.
Topics & Concepts
Anaerobic digestionFood wasteBiogasDigestion (alchemy)Waste managementPulp and paper industryAnaerobic exerciseEnvironmental scienceYield (engineering)AmmoniaChemistryBiotechnologyFood scienceEngineeringMethaneBiologyMaterials scienceBiochemistryChromatographyOrganic chemistryPhysiologyMetallurgyAnaerobic Digestion and Biogas ProductionConstructed Wetlands for Wastewater TreatmentFood Waste Reduction and Sustainability