- Why in news
- On 30 March 2026, CSIR held a technology transfer event in New Delhi to hand over its bio-bitumen process, made from farm residue, to industry for large-scale adoption.
- What it is
- Bio-bitumen is a renewable binder for road surfacing, made from lignocellulosic biomass such as crop residue. It is meant to replace part or all of petroleum-based bitumen. The process was developed jointly by CSIR-CRRI and CSIR-IIP.
- Developers
- CSIR-Central Road Research Institute and CSIR-Indian Institute of Petroleum developed the process jointly.
- Feedstock and process
- It uses agricultural biomass and crop residues as feedstock and a thermochemical conversion process.
- Intended user
- The technology is meant for adoption by the Ministry of Road Transport and Highways in road construction.
- Problems addressed
- It targets pollution from agricultural waste and rising dependence on imported bitumen.
- CSIR
- CSIR is an autonomous research body, with the Prime Minister as its President; its Director General also serves as Secretary, DSIR.
Don’t confuse with Bio-bitumen vs biofuel/ethanol: Bio-bitumen is a road binder from biomass, not a transport fuel like ethanol or biodiesel.
Don’t confuse with CSIR-CRRI vs CSIR-IIP: CRRI is the road research institute; IIP (Dehradun) works on petroleum and fuels. Both developed this process.
Science and technology: 57 Prelims questions since 2013; most test the concept behind the news, not the news itself. In Mains, 12 news-triggered questions.
Why it matters
- Gives farmers extra income from residue and may reduce stubble burning.
- Can cut import dependence on bitumen and lower the carbon footprint of roads.
- Supports circular economy and net-zero goals.
Problems
- Reliable, year-round collection and supply of crop residue at scale.
- Cost competitiveness and quality standards versus petroleum bitumen need field proof.
Way forward
- Pilot stretches on national highways with MoRTH specifications and long-term performance monitoring.
- Build residue collection networks linked to farmers and industry through public-private partnership.
Put in your answer
Waste to Wealth example: Bio-bitumen from crop residue links agriculture, science and infrastructure, and is aimed at reducing stubble burning.
- 2018Mains ESSAY · Q1Alternative technologies for a climate change resilient India.
- 2025Mains GS3 · Q6How India can achieve energy independence via clean technology, and biotechnology's role.
- 2013Mains GS1 · Q25Availability and issues in tapping India's shale oil and gas reserves.
- 2020Prelims Q83Advantages of zero tillage, including avoiding burning of previous crop residue.
UPSC’s own questions that come close to this issue, from our Prelims and Mains banks.
No practice question for this one; the card may still help an answer. Why: Lasting topic linking stubble burning and import reduction, but few testable facts.
Worth revising until Prelims 2027: most news questions come within two years of the event.