Anaerobic acidification of sugar-containing wastewater for biotechnological production of organic acids and ethanol

Anaerobic acidification of sugars can produce some useful end-products such as alcohol, volatile fatty acids (e.g. acetate, propionate, and butyrate) and lactic acid. The production of end-products is highly dependent on factors including pH, temperature, hydraulic retention time and the types of su...

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Veröffentlicht in:Environmental technology. - 1993. - 40(2019), 25 vom: 01. Nov., Seite 3276-3286
1. Verfasser: Darwin (VerfasserIn)
Weitere Verfasser: Charles, Wipa, Cord-Ruwisch, Ralf
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article Anaerobic acidification ethanol lactic acid organic acids sugar wastewater Fatty Acids, Volatile Sugars Waste Water Ethanol 3K9958V90M
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520 |a Anaerobic acidification of sugars can produce some useful end-products such as alcohol, volatile fatty acids (e.g. acetate, propionate, and butyrate) and lactic acid. The production of end-products is highly dependent on factors including pH, temperature, hydraulic retention time and the types of sugar being fermented. Results of this current study indicate that the pH and hydraulic retention time played significant roles in determining the end products from the anaerobic acidification of maltose and glucose. Under uncontrolled pH, the anaerobic acidification of maltose ceased when pH in the reactor dropped below 5 while anaerobic acidification of glucose continued and produced ethanol as the main end-product. Under controlled pH, lactic acid was found to be the dominant end-product produced from both maltose and glucose at pH 5. Acetate was the main end-product from both maltose and glucose fermented at neutral pH (6 and 7). Short hydraulic retention time (HRT) of 2 days could induce the production of ethanol from the anaerobic acidification of glucose. However, the anaerobic acidification of maltose could stop when short HRT of 2 days was applied in the reactor. This finding is significant for industrial fermentation and waste management systems, and selective production of different types of organic acids could be achieved by managing pH and HRT in the reactor 
650 4 |a Journal Article 
650 4 |a Anaerobic acidification 
650 4 |a ethanol 
650 4 |a lactic acid 
650 4 |a organic acids 
650 4 |a sugar wastewater 
650 7 |a Fatty Acids, Volatile  |2 NLM 
650 7 |a Sugars  |2 NLM 
650 7 |a Waste Water  |2 NLM 
650 7 |a Ethanol  |2 NLM 
650 7 |a 3K9958V90M  |2 NLM 
700 1 |a Charles, Wipa  |e verfasserin  |4 aut 
700 1 |a Cord-Ruwisch, Ralf  |e verfasserin  |4 aut 
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773 1 8 |g volume:40  |g year:2019  |g number:25  |g day:01  |g month:11  |g pages:3276-3286 
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