Hydrogen Production via Waste Pyrolysis: A Review of A Study

Year 2024, Issue: SUIC, 129 - 141, 31.12.2024

Sinem Kurt Yuzbasioglu , Hayati Olgun

https://doi.org/10.18185/erzifbed.1524216

Abstract

Hydrogen has great potential for future energy prospects, especially in the potential low-carbon energy system, known as hydrogen economy. It has the highest energy content among all existing fuels [1]. Additionally, as an efficient and clean energy carrier, with only water being released as a byproduct in its conversion into energy. While hydrogen can be derived from various technologies, including both non-renewable (such as fossil fuels) and renewable sources (like biomass) [2], the predominant method still involves fossil fuels, with limited renewable applications due to technological and economic challenges [3]. This study presents a patented model designed by Environmental Power International Ltd (EPi R&D, UK) to produce hydrogen-rich gas from waste while minimising carbon emissions. Model integrates three main sub-systems: High Temperature Pyrolyser, Gas Refinery Unit and Hydrogen Conversion Unit. EPi pyrolysis unit converts the feedstock into syngas and carbon char, and then syngas is refined into methane-rich gas, and ultimately produces high-purity hydrogen and carbon black via thermal plasma electrolysis. Lab scale trials conducted on waste mixtures (Solid Recovered Fuel (SRF) and waste plastic) demonstrated that the model's capability to convert waste into hydrogen with purity exceeding 90%. The design provides great potential for Carbon Capture through its by-products including solid Carbon Black and solid Carbon Char. Carbon Life Cycle Assessment demonstrates that the system leads to net negative emissions. This integrated pyrolysis solution presents a promising avenue for sustainable hydrogen production from waste.

Keywords

carbon capture, Hydrogen, waste, pyrolysis

Ethical Statement

There are no ethical issues regarding the publication of this study.

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