PROCESS OF PRODUCING BIOENERGY WITH LOW EMISSION OF CARBON DIOXIDE AND WASTE-ZERO OF BIOMASS

摘要

The present invention relates to a bioenergy production system for reducing CO_2 exhaust and process wastes, wherein the bioenergy production system is operated by a combination of: a process of producing bioalcohol and biogas by passing through a biosaccharification/alcohol fermentation process including a pre-treatment process of biomass including wooden plants, herbaceous plants, fruit barks, freshwater, marine algae, cereals, aerobic/anaerobic sludge, sugars, polyhydric alcohol (polyol), and carbohydrates, and a process combined with anaerobic digestion; and a process of producing methane biogas with reduced carbon dioxide and hydrogen sulfate through an algae cultivation process for purifying carbon dioxide and hydrogen sulfate contained in the biogas. Here, in cases where the algae cultivation is microalgae cultivation, the harvested microalgae is allowed to pass through a biodiesel preparing process to produce biodiesel, and glycerol and sugar-containing waste, which are byproducts, is returned to the biosaccharification/alcohol fermentation process. In cases where the algae cultivation is macroalgae cultivation, the harvested macroalgae is returned to the biosaccharification/alcohol fermentation process. The present invention has an excellent effect of providing a system for producing waste-zero type bioenergy to maximize the reduction of CO_2, which is a representative greenhouse gas contributing to global warming, and biomass treatment efficiency.