284036 Anaerobic Digestion of Waste Materials for the Production of Biogas

Wednesday, October 31, 2012: 1:45 PM
334 (Convention Center )
Ramalingam Subramaniam, Stephen Dufreche, Rakesh Bajpai and Mark Zappi, Chemical Engineering, University of Louisiana at Lafayette, Lafayette, LA

Anaerobic digestion of waste materials for the production of biogas

Ramalingam Subramaniam, Stephen Dufreche, RakeshBajpai, and Mark E. Zappi

Bioprocessing Research Laboratory

Department of Chemical Engineering

University of Louisiana at Lafayette, Lafayette, LA

Biogas energy can be produced from various sources of biomass which include agriculture crops and residues, municipal solid wastes, and animal waste. In this work, anaerobic biogas was produced from waste materials such as shrimp waste, landfill leachate, and crab waste. The biogas produced from these waste materials in an anaerobic digester contains 65-70% methane and 25-30% carbon dioxide. Biogas with a methane composition of 66% has a heating value of 668 Btu/ft3. Batch experiments were conducted in 500 ml three neck rectors as well as New Brunswick, microfirm MF114 reactor. Kinetic model was developed from the batch experiments. Based on the batch kinetic results, continuous process was investigated in 14 L bioreactor with a working volume of 10L. Batch kinetics, fermentor design and scale up will be discussed in this presentation.

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