DIY Biogas: Biogas digestate as fertilizer

No mistake in deciding to pursue biogas generation. Food waste could be managed well environmentally friendly way. Also the byproducts could also useful for agriculture. After digestion the solid waste leftover could be turned into powder after drying and grinding. Inside its already contained beneficial microbes such able to fixing nitrogen in soil. Or its properties could be enhanced more via biotechnology application towards enrichment and value adding of the existing waste material.

Your effort will be worth it.

But be careful to call your digestate as a biofertilizer make sure it contains beneficial microorganisms (eg. Nitrogen fixing and/or phosphate solubilizing and/or potassium solubilizing, etc) to enhance the properties of the soil where you applied the digestate so that your plant grow better compared to untreated soil. Another thing, biofertilizer should contain enough no. of beneficial microorganism compared to background microflora or otherwise won't show the expected effect if suppressed by other dominant or large no. of other microbes inside the digestate.