A recent study published in the Journal of Cleaner Production explores the use of pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More to convert Ulva prolifera, a macroalgae responsible for disruptive green tides, into biochar for carbon sequestration. While green tides threaten marine ecosystems and coastal industries, pyrolysis offers a sustainable solution by converting this biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More into carbon-rich materials.

The research investigates how U. prolifera’s internal components—soluble polysaccharides, proteins, and cellulose—affect biochar properties and its carbon sequestration potential. Results showed that soluble polysaccharides significantly influence the biochar’s stability and performance. Maintaining soluble polysaccharide levels below 47.66% enhances biochar stability, meeting the European Biochar Certificate standards.

Thermal analysis revealed that the pyrolysis of U. prolifera follows a predictable sequence, with the ashAsh is the non-combustible inorganic residue that remains after organic matter, like wood or biomass, is completely burned. It consists mainly of minerals and is different from biochar, which is produced through incomplete combustion.   Ash Ash is the residue that remains after the complete More content having minimal impact on biochar stability. Correlation analysis highlighted that biochar’s specific surface area, O/C ratio, and refractory organic carbon are key factors influencing its carbon sequestration capacity.

This study also emphasized the potential of integrating U. prolifera pyrolysis with global carbon reduction goals, addressing both environmental and economic challenges posed by green tides. It provides insights for optimizing biomass utilization and promoting sustainable waste management practices.

By linking biomass composition to biochar performance, this research offers actionable strategies for improving carbon sequestration efficiency, aligning with the dual objectives of mitigating green tides and achieving climate targets.