der MD Design of the gear units Overview tables B2-VV-4-D Bevel-helical gearbox B2

Flender/Flender Gear Units/Bevel-helical gearbox B2

ly for pyrazine. Among the substances phenol, kresol, -naphthol, 2-naphthol,2-ethylphenol, 3-ethylphen- 0, 4-ethylpheno1, 2-isopropylpReno1, 3-isopropylphenol, 4-is0 ropylphenol, 2, 3-dimethyl- phenol, 2,4-dimethylphenol, 2,5-dimethylphenol, 2,6-dimethyLhenol, 3,4-dimethylphenol 3, 5-dimethylphenol, 2, 3, 5-trimeth Iphenol, 2, 3, 6-trimethyl henol and 2, 4, 6-trimethyl: henol, the substances 2-isopro ylplenol, 2.4-dimethylphenofand 2,6-dimethylphenol can ge classified as hardly degradabb. In fermentations with phenol, an unusually high rate of degradation for this pollutant was determined of 0.5 / microorganism dry matter and ho'ur. The mixed culture from soil proved to be specialist. With the above-mentioned rate of degradation, it is capable of converting the relatively high concentration of 2 mg phenol per litrefermentation fluid into biomass with an adaptation time of just one hour. Ethyl acetate, isobutyl acetate, is0 ropy1 acetate, 3-methylbutyl acetate, methyl acetate, benzyl acetate, butyl butyrate, isopropyl Eutyrate, methyl butyrate, methyl propionateand propyl ro pionate, as well as aceticanhydride, are degraded by the mixed culture from the biofilter orthe VLSF and the soil isolates used. The microorganisms from the sewage sludge cannot degrade isopropyl acetate and methyl propionate. Finally,furyl alcohol and furfural are degraded by all of the mixed cultures used and by various pure cultures. An innovative laboratory system was designed for selectin suitable absorbents.This compris- ed two or more temperature-controlled vessels, connectec?to one another in gas-tight fashion, containing the solution of one or more pollutants or the absorbent. gas pump provides for constant circulation of the gas phase in the vessels. Depending on the conditions selected, pollutant concentration equilibrium is achieved, from which statements concerning the suit- abilityof theabsorbent can be made.The rangeof biophilicwashing ents (manufactured