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Feasibility study for Carbon Mineralization by using CO2 issued from coal power plant for recycling ash slag in Cao Ngan coal power plant

This technical assistance advances the following Sustainable Development Goals:

Industry, innovation and infrastructure

Industry, innovation and infrastructure

Responsible consumption and production

Responsible consumption and production

Climate action

Climate action


Currently, there exist 20 coal-fired power plants in operation with a total capacity of nearly 14,500 MW, which generate about 15.7 million tons of coal slag per year, of which coal ash accounts for 75%. It is predicted that by the year 2020, there will be 43 factories, which will generate more than 30 million tons of coal slag per year. At present, there are no suitable solutions for this huge amount of slag.

This is a problem not only of the electricity industry, the coal industry or the construction industry, but a general problem of the whole society. Thermal power plants need drastic involvement of researchers, policy makers and provincial People's Committees in continuing to study the application of emissions of thermal power plants.

CTCN Support

To study the pre-feasibility of carbon mineralization technology to treat waste ash, as a green production model, low carbon emissions and solutions to overcome environmental pollution:

  • Implementing feasibility study and synthesize the report, including evaluation at Cao Ngan Thermal Power Plant, on the transfer of ash - slag treatment technology by carbon mineralization method
  • Detailed design of the pilot plant with a demonstration of the carbon mineralization technology, including drawings, capacity, location and estimated cost, etc.
  • Developing a plan for monitoring and observing the implementation of the project with a demonstration of the technology

Expected Results

Besides reducing CO2 emission, application of this technology can bring many environmental and socio-economic benefits, such as handling huge amount of ash slag generated from thermal power plants; reducing emissions and solid waste; reducing the amount of fuel and energy used; reusing industrial by-products in cement production and saving natural resources; creating green materials from recycling for slag at a suitable cost for the Vietnamese market; enhancing awareness on environmental protection and climate change mitigation by local residents, etc.

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