id	keyword
cet-2628	removal
cet-2628	biofilter
cet-2628	concentration
cet-2628	composting
cet-2628	figure
cet-2628	biofiltration
cet-2628	moisture
cet-2628	acid
cet-2628	bed
cet-2628	pruning
cet-2628	biodegradability