New Delhi, 8/1 : In a landmark achievement for sustainable infrastructure, India has officially become the first country in the world to commercially produce bio-bitumen, a green alternative to the fossil-fuel-based binder used in road construction. The historic announcement was made by Union Minister for Road Transport and Highways, Nitin Gadkari, during a technology transfer ceremony held at the Council of Scientific and Industrial Research (CSIR) headquarters.
The breakthrough technology, developed collaboratively by the CSIR-Central Road Research Institute (CSIR-CRRI), New Delhi, and the CSIR-Indian Institute of Petroleum (CSIR-IIP), Dehradun, promises to address two of India’s most pressing challenges simultaneously: the severe air pollution caused by stubble burning and the heavy economic burden of importing petroleum bitumen.
**Turning Waste into Wealth**
The commercial launch involves the transfer of this indigenous technology to 14 Indian manufacturers, signaling a rapid scale-up from laboratory success to industrial mass production. The process utilizes rice straw (parali)—the agricultural residue notoriously burned by farmers in North India, contributing to winter smog—and converts it into bio-bitumen through a process called pyrolysis.
“Today marks a historic milestone in India’s road infrastructure,” Minister Gadkari stated. “We are turning a problem into a solution. By utilizing agro-waste, we are not only cleaning our air but also empowering our farmers with an additional revenue stream.”
**The Science Behind the Green Roads**
The technology involves heating biomass pellets at approximately 500°C in a low-oxygen environment. This thermal decomposition produces bio-oil, which is then refined and blended with conventional bitumen. According to CSIR scientists, the bio-bitumen can replace 20-30% of petroleum-based bitumen without compromising the quality of the road.
In fact, field trials have demonstrated superior durability. A 100-meter test stretch laid on the Jorabat–Shillong Expressway (NH-40) in Meghalaya in 2024 has successfully withstood two heavy monsoons and extreme weather conditions, proving the material’s resilience against rutting and cracking.
**Economic and Strategic Impact**
Currently, India imports nearly 50% of its annual bitumen requirement, costing the exchequer approximately ₹25,000 to ₹30,000 crore in foreign exchange. The widespread adoption of bio-bitumen is projected to slash these imports significantly. Minister Gadkari highlighted that even a modest 15% blending mandate could save the country ₹4,500 crore annually.
Dr. Jitendra Singh, Union Minister of State for Science & Technology, termed the development a “transformative step” towards the vision of *Viksit Bharat 2047*. “This is a perfect example of ‘Waste to Wealth’,” he noted, emphasizing that the byproduct of the pyrolysis process, bio-char, can also be used for soil improvement and carbon sequestration.
With the technology now in the hands of private manufacturers, the government aims to integrate bio-bitumen into national highway standards, paving the way for a greener, more self-reliant India.
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