Biochemical oxygen demands of potential cellulose ethanol waste streams |
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| Authors: | Douglas B Rivers Jenny L Osborn George H Emert |
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| Institution: | (1) Southern Research Institute, P.O. Box 553 05, 35255-5305 Birmingham, AL, USA;(2) Present address: Anaerobe Lab, VPI&SU, 24061 Blacksburg, VA;(3) Present address: Auburn University, 107 Samford Hall, 36849, AL |
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| Abstract: | Summary The effects of potential waste streams resulting from ethanol production by the simultaneous saccharification fermentation (SSF) of cellulose were determined by measuring the biochemical oxygen demand (BOD). A worst-case analysis of BOD from ethanol-containing SSF beer showed an initial value of 1670 mg/l BOD, which is 29% of the expected initial BOD. When ethanol was reduced to 0.1–0.2% w/v, BOD levels were 605 mg/l in the mash and 250 mg/l in the beer. Both values were well below the projected discharge levels. |
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