Repozytorium publikacji - Politechnika Gdańska

Industrial waste products may be a viable alternative to commercial external carbon sources, such as ethanol. In this study, the properties of fusel oil (distillery waste product) were investigated in terms of temperature dependency of denitrification, acclimation period, and the effects on NO2-N and PO4-P behavior. Furthermore, results obtained during three different full-scale trials were used to verify similarities and differences with the results obtained under laboratory-scale conditions. Batch experiments with non-acclimated biomass revealed a very strong temperature dependency of the denitrification process ( = 1.15, R2 = 0.92) in the range of examined process temperatures (13-22 oC). Fusel oil had minor (or no) effects on the behavior of NO2-N and PO4-P. Significantly lower NURs were observed during acclimation to fusel oil in the full-scale bioreactors compared to a bench-scale reactor. This may primarily be attributed to lower doses of fusel oil, lower process temperatures and more complicated process configurations (resulted in not optimal use of fusel oil for denitrification). Both laboratory-scale experiments and full-scale trials suggested that an acclimation period of a few weeks would be required to reach the maximum denitrification capability of process biomass.

Autorzy

• prof. dr hab. inż. Jacek Mąkinia link otwiera się w nowej karcie ,
• dr hab. inż. Krzysztof Czerwionka link otwiera się w nowej karcie ,
• mgr inż. Magdalena Kaszubowska link otwiera się w nowej karcie ,
• dr inż. Joanna Majtacz link otwiera się w nowej karcie