methane conversion of co2 captured from combustion plants or other industrial processes by anaerobic digestion of biomass joint

摘要

A quick method for converting COSUB2/SUB into methane is provided. According to this method, COSUB2/SUB is first combined with suitably formulated and treated biomasses according to predefined ratios and then subjected to an optimized anaerobic digestion process based on bacterial populations of specially selected high-density acetogenic and methanogenic microorganisms. The method described herein integrates four modules: a first module adapted to prearrange a concentrated COSUB2/SUB flow; a second module for preparing, by using industrial methods, nutritional substrates obtained from cocktails of highly degradable, low-cost vegetable and animal matrices; a third module for preparing, by using agro-industrial methods, alcoholic substrates from low-cost vegetable matrices having a high carbohydrate content; a fourth module for carrying out the industrial conversion of the COSUB2/SUB obtained from the first module into acetates and subsequently into methane, by combining it according to accurately defined ratios with optimal nutritional and alcoholic substrates respectively obtained from the second and third modules and then by subjecting said combination to a totally engineered anaerobic digestion process. The proposed method is very useful for industries emitting greenhouse gases as well as for any plants involved in the production of energy from biomasses or in the disposal of organic waste.