Continuous Process of Aerobic Biodegradation of Beet Molasses Vinasse: Focus on Betaine Removal

Agnieszka Ryznar-Luty , Edmund Cibis , Małgorzata Krzywonos , Krzysztof Lutosławski

Abstract

We analyzed the efect of hydraulic retention time (HRT) and pH control of beet molasses vinasse on the efciency of its continuous aerobic biodegradation with a mixed culture of Bacillus bacteria. Two experimental series were conducted in a 2-L stirred-tank reactor, at an aeration rate of 1 vvm, stirrer speed of 900 rpm, and temperature of 36 °C. The frst series was run without medium pH control, whereas the other with pH maintained at 8.0. In both series, HRTs were 26, 47, and 78 h, whereas vinasse pH was raised to 8.0. The extent of its treatment via aerobic biodegradation depended on betaine assimilation phenomenon. High removal of pollutants (over 84%) expressed by the SCODsum index (SCODsum =soluble COD determined with the dichromatic method+theoretical COD of betaine) was achieved at HRTs of 47 and 78 h, whereas medium pH control had no explicit efect on biodegradation efciency.
Author Agnieszka Ryznar-Luty (EaE / IChaFT / DBE)
Agnieszka Ryznar-Luty,,
- Department of Bioprocessing Engineering
, Edmund Cibis (EaE / IChaFT / DBE)
Edmund Cibis,,
- Department of Bioprocessing Engineering
, Małgorzata Krzywonos (EaE / IChaFT / DBE)
Małgorzata Krzywonos,,
- Department of Bioprocessing Engineering
, Krzysztof Lutosławski (EaE / IChaFT / DBE)
Krzysztof Lutosławski,,
- Department of Bioprocessing Engineering
Journal seriesChemical Papers, ISSN 0366-6352, e-ISSN 1336-9075, (N/A 40 pkt)
Issue year2020
Vol74
No4
Pages1301-1307
Publication size in sheets0.5
Keywords in EnglishBeet Vinasse, Bacillus, Continuous Biodegradation, Aerobic Conditions
ASJC Classification1303 Biochemistry; 1500 General Chemical Engineering; 1600 General Chemistry; 2209 Industrial and Manufacturing Engineering; 2505 Materials Chemistry
DOIDOI:10.1007/s11696-019-00980-x
Languageen angielski
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Score (nominal)40
Score sourcejournalList
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.421; WoS Impact Factor: 2017 = 0.963 (2) - 2017=1.198 (5)
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