Hydrogen Production from Wastewater Using Aluminium Scraps and KOH Catalyst
Hydrogen generation was achieved using aluminium scraps catalyzed by KOH with wastewater sources such as reverse osmosis reject water and car wash water. The optimal pH for maximum hydrogen production was found to be 14. A 1 g addition of aluminium scraps produced hydrogen equivalent to 1,360 mL/g. Reaction temperature and particle size affected production rates, achieving 94% hydrogen generation from RO rejects and 98.6% from car wash water within 30 minutes. The cost of producing 1 m³ of hydrogen was estimated at Rs. 100.
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Hydrogen was produced through the hydrolysis of water using aluminium scraps and KOH as a catalyst. Wastewater sources included reject water from reverse osmosis processes and car wash water. The optimal pH for hydrogen production was identified as 14, with 1 g of aluminium scraps yielding hydrogen equivalent to 1,360 mL/g.
Particle size and reaction temperature, up to 45 °C, influenced production rates. Within 30 minutes, 94% hydrogen was produced from RO rejects, while car wash water yielded 98.6%. The precipitate from the reaction showed potential for further applications. The estimated cost for producing 1 m³ of hydrogen is Rs. 100.
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