Achieving Carbon Neutrality in Waste and Resource Circulation

Achieving Carbon Neutrality in Waste and Resource Circulation

Project Overview

Waste has become a problem due to CO2 emissions from incineration of plastics and other materials and methane emissions from landfill disposal of organic waste, and in order to achieve carbon neutrality, it is essential to recover carbon from waste and circulate it in society as raw materials and fuels.

On the other hand, the properties of waste (composition, heat content, moisture content, etc.) are constantly changing depending on the region, season, and weather, and cannot be controlled autonomously, so the amount and properties of the gas after treatment are always unstable, making it difficult to utilize technologies such as carbon capture in other fields as is.

This project aims to minimize atmospheric emissions of CO2, methane, etc., and to achieve virtually zero emissions of greenhouse gases by stably and efficiently capturing carbon from waste, as well as to develop and demonstrate a "carbon-neutral-type carbon circulating system" that circulates and supplies biomass-derived carbon as a resource to industry, with the goal of creating a social implementation model.

Achieving Carbon Neutrality in Waste and Resource Circulation

Project Features

〇 Development of waste incineration treatment technology based on CO2 separation and capture

Large-scale demonstrations will be carried out from the development of new combustion technologies to increase the CO2 concentration in waste-derived incineration exhaust gas and improve the efficiency of CO2 separation and recovery, and from the development of integrated technologies for exhaust gas treatment facilities. As a result, we aim to achieve a stable capture rate of 90% or more of carbon contained in waste.

〇 Large-scale demonstration of high-efficiency pyrolysis treatment plant

In order to efficiently utilize carbon in waste, we will conduct large-scale demonstrations from the development of innovative pyrolysis technologies, design of new furnaces, and development of technologies to reuse residual CO2. As a result, we aim to maximize the effective utilization of carbon and the capture of calorific value from waste.

〇 Development of technology for high-efficiency biomethane conversion, etc.

In order to convert organic waste into fuels such as biomethane with high efficiency, we will conduct pilot-scale demonstrations from the development of elemental technologies for optimal reactors and processes. As a result, we aim to achieve a methane concentration of 97% or higher and a methane production rate of 50 NL/Lr-d or higher in direct methane fermentation biogas methanation under low-temperature and low-pressure conditions.