Hydrogen generation through metal waste corrosion: a systematic investigation on old/post-consumer scrap Al6063-series alloy

• DOI: 10.1007/s40243-024-00287-2
• Publication Date: 2025-01-25T10:38:35Z
• Authors: Meenal Gupta; Filippo Selleri; Antonio Ficarella; Patrizia Bocchetta
• Keywords: Scrap

Abstract In this study, aluminum-based wastes are used as energy carriers for on-demand hydrogen production through sustainable, eco-friendly, and cost-effective controlled electrochemical corrosion in aqueous solution. The process is very effective because it (i) uses waste metals to produce hydrogen, (ii) corroborates circular economy, (iii) produces high purity (iv) based on simple hydrolysis reaction of relevant solutions, (v) electricity not required recovers part the chemical Gibbs usually entirely lost environment. We systematically studied generation from industrial Dust Scrap Aluminum Alloy (DSAA) belonging Al 6063 series first time. investigated a novel hand-made batch reactor with low-cost commercial body suitable an easy scale-up. Kinetics DSAA was explored by measuring variation aluminium ion concentration at different immersion times Inductively Coupled Plasma (ICP) weight loss measurements temperatures NaOH catalyst concentrations. effect composition morphology metal surfaces terms formed oxide layers detail using Optical Polarizing Microscopy (OPM), Energy dispersive X-ray (EDX) Scanning Electron (SEM) techniques. criteria evaluate performance were yield rate. experimental results showed that strong increase (from 0.75 5 M) corresponding slow temperature 38.8 49.9 °C) lead improvement rate one order magnitude, i.e. 35.71 421.41 ml/(g∙min). Low but constant can be generated longer low concentrations (0.75 M), while fast variable occurs higher (5 short times. case study scrap, parameters regulated deliver rates ml/(g min) according requirements. expect presented work will encourage researchers possible use other metal-based multi-material plastic/metal thermodynamically prone source hydrogen. Graphical