renewable energy

Browse all articles tagged with "renewable energy"

Spent Coffee Grounds Converted Into Raw Material for Biofuels

Source: Universitat Rovira i Virgili / Biomass and Bioenergy journal Author: Qahwa World Date: July 27, 2026 Spent Coffee Grounds Converted Into Raw Material for Biofuels Researchers developed an efficient method to extract oil from spent coffee grounds for biodiesel production. Optimal conditions: 45°C for 60 minutes with 35 ml hexane per gram of dry</p>

6 Min Read

2026-07-27

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Just 90 Seconds Turns Wet Coffee Grounds into High-Grade Solid Fuel

Source: National Research Council of Science & Technology – Chemical Engineering Journal | Author: Qahwa World | Date: June 21, 2026 Just 90 Seconds Turns Wet Coffee Grounds into High-Grade Solid Fuel Key Takeaways: Korean researchers develop Flame Plasma Pyrolysis (FPP) technology to convert wet coffee grounds into biochar in just 90 seconds. The technology</p>

6 Min Read

2026-06-21