id	keyword
issue-3090	digestate
issue-3090	market
issue-3090	biogas
issue-3090	production
issue-3090	ukraine
issue-3090	use
issue-3090	digestate market
issue-3090	development
issue-3090	fertilisers
issue-3090	environmental
issue-3090	doi
issue-3090	potential
issue-3090	anaerobic
issue-3090	waste
issue-3090	vol
issue-3090	soil
issue-3090	plants