원문정보
초록
영어
Scale-up of the process for conversion of fish wastes into liquid-fertilizer was examined in a 5-l ribbon-type reactor. Within 96 h after inoculation of autoclaved fish waste with 5.84×105CFU·ml-1 mixed microorganisms, the pH changed from 6.92 to 5.72, the cell number reached 7.28×105CFU·ml-1, and approximately 430 g of fish wastes was degraded. Analyses of a 96-h culture of inoculated fish waste indicated comparable fertilizing ability to commercial fertilizers in hydroponic culture and an amino acid content of 6.91 g·100g-1. Therefore, the scaled-up production was satisfactory with much higher fish-wastedegradationrate (3.61gh-1) than flask-scale production. The culture medium of fish wastes at room temperature was kept well from putrefaction for six months by addition of 1% lactate. Plant-scale production was necessary for commercialization according to cost-effectiveness analysis.