Waste-to-hydrogen, or WtH, is a process that converts waste materials into hydrogen gas, a clean and versatile fuel source. The process involves several steps, each of which can be accomplished using different technologies and methods.
First, the waste materials are pre-treated to remove any recyclable or reusable materials. Then, the remaining waste is subjected to thermochemical conversion. This can involve various processes such as pyrolysis, gasification, or combustion, which break down the waste into smaller components including gases like hydrogen, carbon monoxide, and methane.
Next, the resulting gases are cooled and separated, typically using a condenser or a scrubber, to remove any remaining solid or liquid particles. These gases are then passed through a series of filters and purification systems to remove any impurities and unwanted gases, such as sulfur and nitrogen compounds.
Finally, the purified hydrogen is compressed, and stored for future use as a fuel source. The hydrogen can be used for many applications, such as generating electricity, powering vehicles, heating buildings, or as an energy storage medium. This hydrogen can also be blended with natural gas and use in existing infrastructures and appliance which is known as “blue hydrogen”.
The WtH process not only produces a valuable fuel source, but it also helps to reduce the amount of waste that ends up in landfills and reduces greenhouse gas emissions by diverting organic waste from decomposition. It is an important technology for waste management and for meeting the growing demand for clean energy.