Published On: Sat, Aug 8th, 2015

New study conducted by CSIR shows carcinogenic effects of CNG

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A study conducted by Council of Scientific and Industrial Research (CSIR) claims buses that run on compressed natural gas (CNG) emit ‘nanocarbon’ particles that can cause cancer. While the study was conducted on a limited sample size in Delhi, CSIR alerted the central government due to the severity of the threat it poses to the health of the residents.

According to CSIR’s director general Dr MO Garg, the study can change the perception that natural gas is a clean fuel as it does not emit any visible smoke, which is in contrast to smoke emitted by diesel-run vehicles and perceived as harmful for humans.

“Natural gas is supposed to be a clean fuel when used in internal combustion engines, right? But, I don’t think people realize that what you see (smoke) is perhaps better than what you don’t see (no smoke from CNG vehicles),” said Garg during his address at the Global Green Energy Conclave held here.

Garg said the real-life case study, conducted in joint collaboration between the Indian Institute of Petroleum, Dehradun and the University of Alberta found “nano carbon particles” coming out of the exhaust of the CNG bus.

“You have these nano carbon particles floating around the atmosphere of Delhi. These nano carbon particles can enter straight through your nose into your lungs and can penetrate through the membranes right into your blood.

They can be very rich in polynuclear aromatics which is carcinogenic,” he said at the event.

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