IIT-G, NTPC develop technology for CO2 capture from power plants

Extensive research efforts are being made by the scientific community to overcome this global challenge

After developing a technology to standardise electric vehicles (EV) for Indian climatic conditions and help reduce carbon emissions substantially, the Indian Institute of Technology Guwahati (IIT-G) has now partnered with the National Thermal Power Corporation (NTPC) Limited to design and develop a highly energy-efficient technology for carbon dioxide (CO2) capture from power plants.
The technology, which works on flue gas using a newly activated amine solvent (IITGS), consumes up to 11 percent less energy compared to commercial activated MDEA (monoethanolamine) solvent and up to 31 percent less energy compared to benchmark MEA (monoethanolamine) solvent.
This indigenous technology has been developed by a research team led by Prof Bishnupada Mandal, department of chemical engineering, IIT Guwahati.
Elaborating on the practical applications and benefits of the technology, Prof Mandal said, "The increase in anthropogenic CO2 emissions is one of the reasons attributed to global warming. Extensive research efforts are being made by the scientific community to overcome this global challenge that includes modifications to existing technologies through efficiency improvement for CO2 capture."
Exposure to high carbon emissions has adverse health effects. Medical experts have reported that the main diseases of concern are asthma, rhinosinusitis, chronic obstructive pulmonary disease (COPD)and respiratory tract infections.
Exposure to high carbon emissions has adverse health effects. Medical experts have reported that the main diseases of concern are asthma, rhinosinusitis, chronic obstructive pulmonary disease (COPD)and respiratory tract infections.
Groups at higher risk of climate change effects include individuals with pre-existing cardiopulmonary diseases or disadvantaged individuals.
The IIT Guwahati campus
Image: The IIT Guwahati campus
"The outcome of this project will benefit oil, natural gas, biogas industries, and petroleum refineries. This project, through its research and education, will support and strengthen the UN Sustainable Development Goals (SDGs). It has the potential to save a lot of foreign exchange for the nation as well," a statement from IIT-G said.
After successful completion of the test studies, the pilot plant has been shifted to NTPC's NETRA facility. The IIT Guwahati team and NTPC Limited are in the process of patenting the technology.This development has the potential to combat global climate change.
Monoethanolamine and other proprietary solvent-based technologies are available for CO2 capture in the chemical industry.
This technology is utilised in coal and gas-fired power plants mainly to produce food-grade CO2 in small quantities (compared to CO2 capture in power plants). However, the process is energy-intensive, if adopted for large-scale CO2 capture in power plants.



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