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.
fresh digestate
digestate in powder form after drying and grinding
source: Biogas DIY FB Group