Solid fertiliser
Biogas Plant Operation: Digestate as the Valuable Product
Fertilization is essential for plant growth, and as mineral fertilizers become more expensive, digestate from biogas plants is becoming a valuable alternative. It can be applied directly to soil or processed into products like compost, biochar, or fertilizer pellets, all of which support healthy plant development. Research shows that digestate is effective both raw and processed, though more studies are needed to understand how different biogas feedstocks and processing methods affect its final quality and suitability for various soils and crops.
Biogas-Plant-Operation-Digestate-as-the-Valuable-Product.pdfValorization of digestates from organic solid waste as fertilizers, soil improvers, and agricultural prebiotics: panorama and perspectives
Digestate, a byproduct of anaerobic digestion, is increasingly recognized as a sustainable alternative to chemical fertilizers. Research shows it can enhance soil microbial biomass, nutrient availability, and plant performance without harming soil quality. However, untreated or poorly monitored digestates may contain contaminants—especially heavy metals—that pose environmental and health risks. While they can promote beneficial soil bacteria, strict quality control and post-treatment are essential. This review highlights their potential as fertilizers and soil enhancers, emphasizing the need for stronger regulations, particularly in regions like Latin America.
Valorization-of-digestates-from-organic-solid-waste-as-fertilizers.pdf