| The pigment in cane molasses alcohol wastewater is a natrural pigment which need to be developed. It mostly comes from cane molasses, but it is different from cane molasses in some aspect. It is necessary to investigate it deeply, in order to found a reliable theoretic foundation for the extracting and applying of the pigment and also for the treatment of alcohol wastewater from cane molasses. Main contents studied show as follows in this investigation:1 the characteristics of pigment in alcohol wastewater and extracted pigment2. desugarization of alcohol wastewater by culture of microorganism3 extracting technology of pigment from alcohol wastewater4 molecular weight distribution and component anlysis of pigment5. pretreatment equipment for adsorption of pigment --sedimentation style centrifuger for suspended microsomeFirst, the sugar and other nutrients were bio-translated into biomass by culture of microorganism, in order to decrease the impurity in alcohol wastewater for the process of adsorption. And the biomass could be used as feed protein or food additives. The strain, ganoderma, was singled out from six kinds of edible fungi, which could grow very well in the wastewater culture media. In the case of not adding any other nutrients, the yield of hypha in wastewater culture media reached to 1.1%(dw/v), and the survival sugar was down to less than 0.5% from original more than 2%, which would be very advantageous for the following adsorption process of pigment.The separation of pigment was going on by adsorption method which would be applied in plant more easily. Several kinds of ion-exchange resins and adsorbents were used in the investigation. The results showed that powdery activated carbon was the best. Its adsorption yield of pigment was near to 100%. The activated carbon which had adsorpted pigment could be regenerated by washing with basic liquid, methanol liquid, alcohol liquid, acetone liquid and basic acetone liquid.
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