A Day at IIT Bombay: How 1,200+ Students Are Fed Using Waste

IIT Bombay is using fallen leaves and other garden waste to make leaf pellets. These pellets serve as cooking fuel, reducing the campus mess’s dependence on LPG cylinders. The idea links waste management with daily food preparation.

The campus clears about 2 tonnes of garden waste each day. Infixen, an IIT Bombay-funded startup, processes this material into fuel. Hostel 16’s mess uses the pellets to cook meals for students, including lunch for about 1,200 students.

This system gives discarded leaves a useful second purpose. It also reduces the amount of waste IIT Bombay must haul away and lowers LPG consumption. The article reports that the campus once spent ₹50 lakh each year removing this waste, while the new approach turns it into cooking energy.

IIT Bombay clears around 2 tonnes of garden waste from its campus every day. Instead of treating all this material as rubbish, the institute sends it into a system that produces cooking fuel. This creates a daily link between campus landscaping and the kitchens serving students and staff.

The article says the fuel supports meals for 2,000 people. A specific example is Hostel 16’s mess, which cooks lunch for 1,200 students using leaf pellets instead of relying only on gas cylinders. The pellets are made from the garden waste processed by Infixen, an IIT Bombay-funded startup.

The scale matters because this is not a small demonstration serving a few meals. A steady waste stream supports a large institutional kitchen. It also reduces the waste sent away and helps IIT Bombay cut LPG use, showing how campus operations can supply part of their own energy needs.

Turning campus waste into fuel sharply reduces the mess’s dependence on LPG. The article reports a 60% cut in LPG use, meaning the kitchen can prepare large quantities of food while using far fewer gas cylinders. This matters for both operating costs and fuel security.

Hostel 16’s mess provides a clear example. It cooks for about 1,200 students with leaf pellets made from garden waste. The article highlights a change from 10 LPG cylinders to just 4. The pellets supply an alternative cooking fuel, while LPG remains part of the kitchen’s energy mix.

This does not mean LPG disappears completely from the mess. Instead, waste-derived pellets carry much of the cooking load. The result is a practical hybrid system: campus waste becomes useful fuel, the kitchen consumes fewer cylinders, and less garden material needs to be hauled away.

Reducing LPG use matters because India imports about 60% of its LPG. The article explains that most of this imported supply passes through the Strait of Hormuz, described as one of the world’s most volatile chokepoints. A disruption there could threaten fuel availability for millions of kitchens.

IIT Bombay’s system addresses this vulnerability at the kitchen level. Its campus waste becomes leaf-pellet fuel, allowing Hostel 16’s mess to reduce LPG use by 60%. The mess reportedly cuts its cylinder use from 10 to 4 while feeding a large student population.

This example shows how local fuel sources can reduce reliance on imported LPG. It does not replace national supply systems, and the article does not claim that one campus can solve India’s energy challenge. However, using available waste for cooking can provide institutions with an additional fuel option during supply uncertainty.

If an institution does not make leaf pellets, it can still manage garden waste in useful ways. Common options include composting, mulching leaves around plants, or sending material to a municipal or commercial organic-waste facility. These approaches reduce hauling and return nutrients to soil, though they do not directly produce cooking fuel.

For cooking energy, institutions may use electricity, biogas from suitable organic waste, or other approved biomass-fuel systems. The right choice depends on the waste type, equipment, safety rules, space, and local energy supply. These alternatives are general options, not systems described as operating at IIT Bombay in the source.

IIT Bombay’s example combines both goals: waste treatment and fuel production. Infixen processes about 2 tonnes of daily garden waste into leaf pellets, helping reduce LPG use. Institutions choosing another route would need reliable collection, suitable technology, trained operators, and safe kitchen equipment.

Several actors connect waste collection to cooked meals. IIT Bombay provides the campus, garden waste, funding support, and institutional setting. Infixen is the IIT Bombay-funded startup that processes the waste into clean cooking fuel. The mess operates the kitchen that uses this fuel.

The daily material is the roughly 2 tonnes of garden waste cleared from campus. Infixen turns it into leaf pellets. Hostel 16’s mess then uses those pellets while cooking for about 1,200 students. Across the campus, the fuel helps produce breakfast, lunch, and dinner for 2,000 people.

Students and staff are the final users of the meals, rather than direct operators of the fuel system. The arrangement also changes IIT Bombay’s waste costs and fuel use. Waste that once required removal now supports cooking, while LPG use falls from 10 cylinders to 4 in the highlighted mess example.

Plants capture sunlight through photosynthesis and store its energy in chemical compounds made from water and carbon dioxide. Much of this stored energy remains in plant material such as leaves, stems, and other biomass. Fallen leaves therefore contain chemical energy originally supplied by sunlight.

When dried plant material is used as fuel, heating and combustion break down its chemical compounds. The stored energy is released mainly as heat. A suitable stove or burner transfers that heat to a cooking vessel, where it warms water and food. Pelletising biomass can make the material easier to handle and feed into a cooking system.

IIT Bombay’s example applies this basic energy pathway to campus waste. Infixen processes garden waste into leaf pellets, and the pellets help cook meals at Hostel 16. The article calls the fuel clean cooking fuel, but it does not provide technical details about the plant chemistry, emissions, or pellet-making process.