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MDBA is usually used as the chain extender in the production of green solvents. The wastewater generated in its production contains 2-butyl alcohol, butanone, sodium carbonate, p-TSNa and other additives. The 2-butyl alcohol was extracted back by adding the RA-2 extractant into the kettle residue and then the wastewater was directly treated by the pressurized biological oxidation process with the...
The bio-hydrogen producing process has complex interactions; thus, constructing a detailed mechanistic model and proper control architecture is difficult. Artificial neural networks (ANNs) are capable of inferring the complex relationships between input and output process variables without a detailed characterization of the mechanisms governing the process. This work presented a novel ANN that accurately...
Experiments were carried out to study the effects of peak voltage and gap width on ozone generated by proper high frequency and high voltage power supply. The results show that the corona inception voltage are 4100 V, 6500 V and 8040 V when the gap width are 1 mm, 2 mm and 3 mm, respectively. The highest volume fraction and production efficiency of ozone are 24.55×10-3 and 134 g/kWh with a gap width...
A set of batch assays was used to assess the characteristics of ammonium oxidation, nitrite and nitrate reduction by heterotrophic nitrifier of Bacillus sp. LY. Bacillus sp. LY is not only a heterotrophic nitrifier, but is also an aerobic denitrifier, and shows a surprising ability of aerobic nitrification- denitrification for nitrogen removal. C/N 15 and 30degC were the optimal conditions for aerobic...
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