Thermophilic composting of food waste.
A laboratory reactor was designed to study the effects of operating parameters (air suction rate, seeding and agitation) on the composting process of a synthetic food waste made of dog food. Experimental results showed that the synthetic food waste could be composted within 4 days and the final compost passed the maturity tests. In most cases except those with 32% of seeding, the process involved two major stages of composting. The two peak temperatures between 50 and 60 degrees C occurred at 8-12th hour and 50-65th hour, respectively. Operating parameters that converted the most volatile solids and carbons in the feedstock were as follows: 1.6 l air/kg dry solid-min of air suction rate, 32% of seeding and 50% of agitation time.
Chang
James I
JI
Department of Safety, Health and Environmental Engineering, National First University of Science and Technology, Kaohsiung, Taiwan, ROC. envjames@ccms.nkfutst.edu.tw
Tsai
J J
JJ
Wu
K H
KH
D019149:Bioreactors; D002245:Carbon Dioxide; D005735:Garbage; D006358:Hot Temperature; D012037:Refuse Disposal / Q000379:methods*; D012044:Regression Analysis; D013696:Temperature; D014835:Volatilization
D002245:Carbon Dioxide