Happy New Year to all !! Does anyone have any information/comparisons of operational data on biofilters vs scrubbers vs scrubbers with ozone lamps? Also looking for reference facilities for these and bona fide technology suppliers. Info would be much appreciated. Thanks, Ron Mendelsohn DIGESTION List Sponsors, Archive and Information http://www.crest.org/renewables/digestion-list-archive http://www.crest.org/renewables/biomass-info/ Beginners Tour of Biogas http://WWW.roseworthy.adelaide.edu.au/~pharris/biogas/beginners