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. 2017 May 8;10:119. doi: 10.1186/s13068-017-0804-2

Fig. 4.

Fig. 4

Technologies selected in three separation stages for IN NSL SLD HV CMD product. The active streams are shown by bold red lines and selected technologies are highlighted in different colors corresponding to each stage: red for stage I, green for stage II, and blue for stage III. Cost contribution shown by the numbers on the left bar indicates stage I to be the key cost driver, followed by feed cost and stage III. Stage II is absent in the optimal network