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Kitchen garbage was utilized to produce lactic acid (LA) to reduce the corresponding cost. The whole process for pure LA production involved fermentation, esterification and hydrolysis. Kitchen garbage could produce 47.9gL −1 LA with pH adjusted with ammonia to 6–7. Then the fermentation broth was concentrated by water evaporation, the ammonium lactate inside was esterified with the butanol...
Four-compartment configuration electrodialyzer was employed to recover and concentrate lactic acid from kitchen garbage fermentation broth that contains mainly ammonium lactate and reducing sugar. Some parameters were examined under different processes of electrodialysis, such as the changes of lactic acid concentration, pH, the recovery ratio of lactic acid, the electric current efficiency and the...
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