Studies on synthesis of lactic acid from molasses and cheese whey in semifluidised bed biofilm reactors

Biological wastewater treatment and bioreactor design: a review

“…As observed by Narayanan and Biswas [58], in this case also, the yield of Xanthan gum was seen to be increasing with increase in reactor capacity. Commercial synthesis of lactic acid from cheese whey permeate and molasses (sugar mill effluent) in two phase semifluidized bed bioreactors has also been reported [51,63]. Through mathematical analysis as well as experimental study, the authors have illustrated that more than 80% lactose conversion and more than 85% sucrose conversion to lactic acid could be achieved in a bioreactor with L Sf = 1.2 m and D = 0.5 m, at feed flow rates ranging from 78,000 to 79, 000 L h − 1 , the fractional substrate conversion attained increasing with increase in substrate flow rate.…”