Conventional lubricants are derived from crude oil; they are highly toxic and persist in the environment for decades. This project synthesizes a sustainable alternative by combining lipid-rich microalgae residues with waste animal fats (tallow). The resulting hydrocarbon biolubricants offer superior lubricity, a higher flash point, and excellent viscosity indexes while being 100% biodegradable and reducing reliance on fossil fuels.
Lipids are extracted from the algal biomass and combined with the animal fat waste. The mixture undergoes esterification, followed by catalytic hydrodeoxygenation (removing oxygen using hydrogen gas and a catalyst). Finally, the hydrocarbons are isomerized to improve their cold-flow properties, resulting in a stable, high-grade synthetic bio-base oil.
Researchers from IIT Hyderabad and Swinburne University have developed bio-bricks as a sustainable alternative to burnt clay bricks. Made from agricultural waste, these eco-friendly bricks are lighter, fire-retardant, and offer better seismic resistance. They help reduce building costs, improve energy efficiency, and serve as carbon sinks, directly preventing the open-field burning of crop stubble.
Dry agricultural waste is chopped and mixed with a lime-based slurry and water. The mixture is poured into molds, compacted, and left to dry for 15-20 days. Traditional additives like Bel fruit pulp and river clay slurry are added to improve structural strength and binding.
Commercial brake pads generate toxic dust containing heavy metals and synthetic fibers that pollute roadways and waterways. This material engineering project utilizes dried fruit and vegetable residues (like banana peels and potato skins) as natural friction modifiers and fillers. These bio-composites exhibit excellent heat dissipation, wear resistance, and friction stability, offering a highly sustainable "green braking" solution.
The vegetable and fruit wastes are dried and milled into a fine bio-powder. This powder is compounded with a matrix of phenolic resins, natural reinforcing fibers, and binding agents. The mixture is then subjected to hot compression molding—pressed under extreme heat and pressure to form dense, rigid brake pad blocks that are subsequently heat-cured.
Fruit pomace waste creates a biochar with a uniquely high surface area and an abundance of oxygen-containing functional groups. These chemical sites strongly bind to lead (Pb(II)) ions through ion exchange and complexation, offering a low-cost alternative to commercial activated carbon.
Bio-FlexGen is a European initiative developing a highly flexible gasification plant. It uses diverse, low-value biomass (like crop straws and husks) to produce green hydrogen and electricity. The plant can seamlessly switch modes: producing hydrogen for storage when grid power demand is low, and dispatching electricity via gas turbines when demand peaks, creating a fully dispatchable renewable energy system.
The mixed biomass is fed into a high-temperature steam-oxygen gasifier. This process converts the solid organic matter into "syngas" (a mixture of hydrogen and carbon monoxide). The syngas is cleaned and then either directed into a Solid Oxide Fuel Cell (SOFC) / gas turbine for immediate electricity generation or processed through a water-gas shift reaction to maximize pure hydrogen extraction.
Microalgae can produce up to 100 times more oil per acre than traditional oilseed crops like soybeans. This project optimizes the cultivation of high-lipid algae strains, often utilizing industrial wastewater or captured CO2 to feed the blooms. The extracted algal lipids are converted into a clean-burning biodiesel that drastically lowers particulate and greenhouse gas emissions without competing for arable farmland.
The algal biomass is harvested and dewatered. The intracellular lipids (oils) are extracted using solvents or supercritical fluid extraction. The pure algal oil is then subjected to a catalytic "Transesterification" reaction—mixing the oil with an alcohol (like methanol) and a base catalyst. This separates the glycerin from the fatty acids, producing high-grade Fatty Acid Methyl Esters (FAME), known as biodiesel.
Green manure crops (like legumes or clover) are typically grown and then tilled directly back into the soil to improve nutrients. This innovation extracts valuable biopolymers from the leftover stems and leaves before the tilling process. These polymers are spun into microscopic capsules capable of enclosing active ingredients. This provides a slow-release delivery system for agricultural chemicals that completely biodegrades, solving the problem of synthetic microplastics accumulating in farmland.
The plant residues are processed to extract cellulose and plant proteins. These biopolymers are dissolved into a continuous liquid phase. The "active ingredient" (like an essential oil or pesticide) is introduced. The system undergoes "coacervation" or spray-drying, where the biopolymers naturally assemble and form a protective shell around the active core, creating a stable microcapsule.
Bamboo processing for furniture and textiles generates a massive amount of stem shavings and sawdust. MycoBamboo upcycles these scraps by using fungal mycelium (the root structure of mushrooms) as a natural, living binding agent. The mycelium network grows through the bamboo matrix, digesting the lignocellulose and fusing it into a solid, lightweight, fire-resistant, and 100% compostable insulation material without the use of toxic glues.
The bamboo residues are chopped and heat-sterilized to prevent unwanted mold growth. The sterile biomass is inoculated with specific fungal spores and placed into 3D molds. Over the course of 5 to 7 days, the mycelium network grows and colonizes the substrate, acting as a biological glue. Once the desired shape and density are achieved, the panel is baked in an oven to deactivate the fungus and completely dry the board.
