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Researchers at the University of O'Higgins in Chile are creating a biofilter system using biochar to treat pig farm wastewater. Led by Dr. Uri Aceituno, the project utilizes vineyard pruning waste converted to biochar through pyrolysis.

The team aims to produce a pilot-scale biofilter within two years, enhancing nutrient absorption and addressing regional environmental challenges. This initiative exemplifies a circular economy approach by valorizing agricultural residues and minimizing environmental impacts.