Gower Hall, Foston, York, YO60 7QD

Anaerobic digestion / Food waste

At Titan Resource Management, we can create a viable stream from food waste and organic materials; compost and food waste are discussed often, and with new legislation encouraging all local authorities and councils to reach the target of food waste collection by 2025, this waste stream must be considered.

Natural and sustainable

This is not just for agricultural or food producers. Your business will have food waste that can be stored and collected in every breakroom or staff area.

It is essential to understand that anaerobic digestion is a biological process in which microorganisms break down organic matter without oxygen to produce biogas and digestate. It is a natural and sustainable way to treat organic waste and generate renewable energy. The process occurs in an oxygen-free environment and is commonly used to treat various organic materials, such as food waste, animal manure, agricultural residues, sewage sludge, and other organic by-products.

The anaerobic digestion process involves four main stages:

Complex organic compounds are broken down into simpler molecules by hydrolytic bacteria. Enzymes secreted by these bacteria break down large molecules into soluble compounds.
Acidogenic bacteria further break down the soluble compounds produced in the hydrolysis stage into volatile fatty acids and other organic acids. This stage has intermediate products such as acetic, propionic, and butyric acid.
Acetogenic bacteria convert the organic acids produced in the acidogenesis stage into acetic acid, hydrogen, and carbon dioxide.

Finally, methanogenic archaea convert the acetic acid, hydrogen, and carbon dioxide from the previous stages into biogas, primarily consisting of methane (CH4) and carbon dioxide (CO2). The methane content in biogas is typically the main component of interest since it can be used as a renewable energy source.

The biogas produced through anaerobic digestion can be used as a renewable energy source for electricity generation, heating, or vehicle fuel. The remaining solid, digestate, is rich in nutrients and can be used as a high-quality organic fertiliser after anaerobic digestion.

Anaerobic digestion offers several environmental and economic benefits, including reducing organic waste, greenhouse gas emissions, and dependence on fossil fuels. It is considered a sustainable waste management and energy production solution, promoting the circular economy by converting organic waste into valuable resources. Additionally, anaerobic digestion helps in mitigating environmental pollution and contributes to the reduction of odour and pathogens in organic waste materials.

Identify how to manage your waste best

At Titan Resource Management, we can identify how to manage your waste best; creating a new material that has a further life and is beneficial is an essential part of our waste management ethos.