CO2 Emission Reduction and Energy Recovery from Straw Cogeneration Project

Waste management systems are a non-negligible source of greenhouse gases. In particular, methane and carbon dioxide emissions occur due to the biomass residues dumped or left to decay under mainly aerobic conditions or burnt in an uncontrolled manner. A case study of straw cogeneration project in Laixi city, Shandong province of China is discussed in this paper. The project will collect straw and combust it to produce electricity and heat to the users. The analyses are conducted based on methodology ACM0006 of Clean Development Mechanism for the estimation of greenhouse effect reduction for the project´s baseline. It is found that the project capacity by combustion and flaring combined will reduce emissions of about 4.418 million tones of CO₂e over the next 21-year lifetime, and at the same time, 126,720 MWh electricity and 908,000 GJ heat will be produced per year. The necessity of the project and collection of straw are also discussed in this paper.