India Becomes First Country to Commercially Produce Bio-Bitumen for Roads

Union Road Transport and Highways Minister Nitin Gadkari announced that India has become the first country in the world to commercially produce bio-bitumen for road construction, marking a major breakthrough in sustainable infrastructure development.

Announcement at CSIR Technology Transfer Ceremony
Addressing the CSIR Technology Transfer Ceremony in New Delhi, the Minister congratulated the Council of Scientific and Industrial Research (CSIR) for achieving this landmark innovation. He described bio-bitumen as a transformative step towards the vision of Viksit Bharat 2047.

What is Bio-Bitumen?

• Bitumen is a black, viscous petroleum product derived from crude oil and is a key binder in road construction.
• Bio-bitumen is produced from renewable organic materials such as plant-based oils, agricultural residue, and biomass, offering a cleaner alternative to petroleum-based bitumen.

Indigenous Technology Developed by CSIR
The innovation titled “Bio-Bitumen via Pyrolysis: From Farm Residue to Roads” has been jointly developed by:

• CSIR–Central Road Research Institute (CSIR-CRRI), New Delhi, and
• CSIR–Indian Institute of Petroleum (CSIR-IIP), Dehradun.

From Crop Residue to Road Binder

• Rice straw is densified into pellets and subjected to controlled pyrolysis (thermal decomposition).
• The process yields bio-oil, bio-char, and gases.
• Bio-oil is further upgraded into a bio-binder suitable for flexible pavement applications.
• The bio-binder can be used in hot mix asphalt with existing road construction equipment.

Proven Performance and Environmental Benefits

• Extensive laboratory testing shows that 20–30% of conventional bitumen can be safely replaced by bio-bitumen without compromising road performance.
• The initiative helps reduce pollution caused by crop residue burning, particularly rice straw.

Reducing Import Dependence
India currently imports nearly 50% of its bitumen requirement. The adoption of bio-bitumen is expected to:

• Lower foreign exchange outflow,
• Strengthen domestic technological capability, and
• Promote a circular economy in the agriculture and infrastructure sectors.