Optimization of hydrogen evolved from aluminium-water reaction using Taguchi’s method and particle swarm optimization
摘要
In this present work, the optimization of the input operating parameters to yield high rate of production of green hydrogen by the chemical reaction of recyclable aluminium and water in the presence of aqueous (aq.) NaOH is reported. Al is reacted with aq. NaOH concentration of 3 mol L−1, 4 mol L−1, and 5 mol L−1, the temperature of the reaction is 323 K, 333 K, and 343 K. The maximum rate of production is found to be 47.38 ml min−1 at 5 mol L−1 at 343 K. The effect of the size of the Al pellets on the rate of generation of hydrogen is investigated and found to be higher for smaller pellets. The activation energy for different sizes of Al pellets is reported to be lessened by 30.05% with a reduction in the area of the pellet by 66.67%. The purity of hydrogen gas is determined as 68.46%. The experimental results are used to establish a mathematical model using the Taguchi and the Particle Swarm Optimization (PSO) techniques. The optimum condition for maximum hydrogen production is predicted as 5 mol L−1 at 343 K by both the simulation methods. The outcomes are encouraging and can be implemented for the large-scale production of hydrogen gas.