How can bio-based lubricants contribute to India's energy conservation and green manufacturing goals? Illustrate with recent research examples.

Q. How can bio-based lubricants contribute to India's energy conservation and green manufacturing goals? Illustrate with recent research examples. (15 marks, 250-350 words)

Bio-based lubricants are formulations built on renewable vegetable oil bases such as castor oil, replacing mineral-oil derivatives. Because friction and wear silently drain energy from every rotating machine, such lubricants sit at the intersection of India's energy-efficiency and clean-manufacturing agendas.

Contribution to energy conservation - Cutting frictional losses: lower friction directly reduces the power a machine must draw. A recent Indian study showed that adding just 0.1 wt% borophene to castor oil reduced friction by about 42% compared with pure castor oil [1]. - Extending machinery life: the additive forms a protective tribofilm of iron oxides, carbonaceous species and boron compounds that lowers shear stress, surface roughness and mechanical wear [1], deferring replacement and the embodied energy it consumes. - Sectoral spread: gains are most valuable in renewable energy systems and marine applications, where downtime and maintenance costs are high [1].

Contribution to green manufacturing - Renewable, biodegradable base: castor oil is a renewable and biodegradable lubricant base, limiting soil and water contamination from spent oil [1]. - Reducing petroleum dependence: substituting bio-bases for imported mineral base oils supports import substitution and lowers the carbon intensity of industrial operations. - Agro-industrial linkage: castor is an established Indian oilseed crop, letting green lubrication draw on domestic agricultural value chains.

Illustration: the borophene–castor oil breakthrough (2026) - Scientists at the Institute of Advanced Study in Science and Technology (IASST), Guwahati — an autonomous institute under the Department of Science and Technology, set up in 1979 [2] — demonstrated borophene, a 2D boron nanomaterial, as a lubricant additive for the first time [1]. - Borophene disperses uniformly in castor oil without chemical modification, keeping the formulation simple and scalable; findings appeared in ACS Applied Engineering Materials [1].

Bio-based lubricants thus convert a routine industrial input into an instrument of energy saving and pollution prevention. Scaling them needs standards for bio-lubricant performance, incentives for industrial adoption, and sustained support to DST's autonomous institutes so that laboratory results reach the shop floor — advancing SDG-9 and SDG-12 together.

(~320 words)

Sources: 1. Borophene-based green lubricant can help save energy — Department of Science & Technology (2026) — borophene as first-time lubricant additive, 0.1 wt% dosage, ~42% friction reduction, tribofilm mechanism, castor oil as renewable biodegradable base, marine/renewable-energy applications, publication in ACS Applied Engineering Materials 2. The Institute of Advanced Study in Science & Technology, Guwahati — DST — IASST established 1979, autonomous institution under the Department of Science and Technology