Pressmud is a residual byproduct in the sugar industry often known as filter cake or press cake. It has been acknowledged as a valuable resource for green energy production.
Key points
- The byproduct can help Indian sugar mills generate extra revenue by utilising it as a feedstock for biogas production through anaerobic digestion and subsequent purification to create compressed biogas (CBG).
- The use of pressmud as a feedstock for CBG offers several advantages.
- It eliminates the complexities associated with the feedstock supply chain, as found in the case of agricultural residue, where biomass harvesting machinery is required for harvesting and aggregation.
- It lacks the organic polymer lignin, unlike agriresidue.
- Storing pressmud proves challenging as it undergoes gradual decomposition, resulting in the breakdown of organic compounds. This complicates long-term storage and raises production costs.
