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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References
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Rivers, D.B., Osborn, J.L. & Emert, G.H. Biochemical oxygen demands of potential cellulose ethanol waste streams. Appl Microbiol Biotechnol 26, 91–94 (1987). https://doi.org/10.1007/BF00282154
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DOI: https://doi.org/10.1007/BF00282154