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Simulation of spent sulfite liquor fermentation using the object oriented knowledge based shell G2

Technical Report:

Abstract

This report demonstrates that simulation is a valuable tool, which can provide useful information for industrial fermentor operation and design. The key to good simulation is reliable fermentation kinetics. Starting point is the kinetics found in literature or obtained in laboratory experiments. This need not necessarily give a correct description of full-scale plant behaviour for several reasons, like population distribution (different characteristics of recycled biomass), natural selection of microorganism and metabolic behaviour modification during long-term operation, etc. Therefore, it is highly recommended to verify the kinetics on real plant data obtained either from permanent monitoring or especially designed plant measurements. We wanted to use the unique design of the MoDo ethanol plant in order to obtain sufficient information concerning the fermentation kinetics formulation based on normal steady-state operation. Unfortunately, this was not possible from the data obtained, because we could only estimate the fermentation rates in the first fermentor. The rest of the cascades was only flown through by the mash. A solution worth to try is to increase the flow rate of spent sulfite liquor, or to decrease the fermentor medium volume and then make new measurements. If this would help to formulate the process kinetics, simulation could then  More>>
Publication Date:
Oct 01, 1992
Product Type:
Technical Report
Report Number:
LITH-IFM-R-199
Reference Number:
SCA: 090900; PA: SWD-93:007031; SN: 93000928702
Resource Relation:
Other Information: PBD: Oct 1992
Subject:
09 BIOMASS FUELS; FERMENTATION; COMPUTERIZED SIMULATION; ETHANOL; SPENT LIQUORS; PAPER INDUSTRY; KNOWLEDGE BASE; 090900; PROCESSING
OSTI ID:
10120723
Research Organizations:
Linkoeping Univ. (Sweden). Dept. of Physics and Measurement Technology
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Other: ON: DE93761481; TRN: SE9307031
Availability:
OSTI; NTIS
Submitting Site:
SWD
Size:
18 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Polakovic, M, Hoernsten, E G, and Mandenius, C F. Simulation of spent sulfite liquor fermentation using the object oriented knowledge based shell G2. Sweden: N. p., 1992. Web.
Polakovic, M, Hoernsten, E G, & Mandenius, C F. Simulation of spent sulfite liquor fermentation using the object oriented knowledge based shell G2. Sweden.
Polakovic, M, Hoernsten, E G, and Mandenius, C F. 1992. "Simulation of spent sulfite liquor fermentation using the object oriented knowledge based shell G2." Sweden.
@misc{etde_10120723,
title = {Simulation of spent sulfite liquor fermentation using the object oriented knowledge based shell G2}
author = {Polakovic, M, Hoernsten, E G, and Mandenius, C F}
abstractNote = {This report demonstrates that simulation is a valuable tool, which can provide useful information for industrial fermentor operation and design. The key to good simulation is reliable fermentation kinetics. Starting point is the kinetics found in literature or obtained in laboratory experiments. This need not necessarily give a correct description of full-scale plant behaviour for several reasons, like population distribution (different characteristics of recycled biomass), natural selection of microorganism and metabolic behaviour modification during long-term operation, etc. Therefore, it is highly recommended to verify the kinetics on real plant data obtained either from permanent monitoring or especially designed plant measurements. We wanted to use the unique design of the MoDo ethanol plant in order to obtain sufficient information concerning the fermentation kinetics formulation based on normal steady-state operation. Unfortunately, this was not possible from the data obtained, because we could only estimate the fermentation rates in the first fermentor. The rest of the cascades was only flown through by the mash. A solution worth to try is to increase the flow rate of spent sulfite liquor, or to decrease the fermentor medium volume and then make new measurements. If this would help to formulate the process kinetics, simulation could then be used more efficiently for improving the current process or in design of the new one. (21 refs., 2 figs., 5 tabs.).}
place = {Sweden}
year = {1992}
month = {Oct}
}