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Combined process treatment of molasses fermentation waste water for biogas generation
Author(s) -
Azzam Abdel Mouty,
AbdelShafy Hussein I.,
Ibrahim Mohamend Z.
Publication year - 1989
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270120116
Subject(s) - industrial fermentation , biogas , fermentation , pulp and paper industry , waste management , anaerobic digestion , chemistry , biogas production , anaerobic exercise , organic matter , anaerobic respiration , methane , microbiology and biotechnology , food science , engineering , biology , physiology , organic chemistry
Anaerobic fermentation of molasses distillery slops to biogas was carried out with the aid of an adapted and selected anaerobic mixed culture. Two different types of fermenters were used, namely an agitated pretreatment fermenter and a column fermenter with glass rings as carriers for micro‐organisms. The production of biogas in both fermenters amounted to between 0.6 and 0.8 dm 3 /g COD. The aerobic pretreatment of distillery slops by T. fermentans , yeast during a 4 to 6 h period allows a high reduction of COD in the subsequent anaerobic phase of the process. After treatment of the distillery slops by T. fermentans , it was possible to convert between 85 and 93% of the organic matter to methane. Conversion was about 93% with loading rate of 25g COD/litre day.