The Effect of Temperature on the Efficiency of Aerobic Biodegradation of Sugar Beet Distillery Stillage: Removal of Pollution Load and Biogens

Krzysztof Lutosławski , Edmund Cibis , Małgorzata Krzywonos

Abstract

Beet stillage is a high-strength effluent from the production of ethanol from sugar beet. A large annual volume of sugar beet stillage requires finding new effective ways for its utilization. The aim of the study was to investigate the effect of temperature on the efficiency of aerobic biodegradation of beet stillage. Biodegradation was carried out for 168 hours in a stirred-tank reactor with a working volume of 5 L at 27°C, 36°C, 45°C, 54°C and 63°C. All experiments were performed at uncontrolled pH, aeration of 1.0 vvm and of 900 rpm. The effectiveness of biodegradation was determined by the extent of removal of SCODsum (COD determined after suspended solids separation and theoretical COD of betaine), BOD5 and TOC. Studies have shown that, under mesophilic conditions, the extents of reduction of SCODsum, BOD5 and TOC were statistically significantly (p≤0.05) higher than under thermophilic conditions. Within the range of 27-36°C, the highest reduction in SCODsum (79.2-79.9%), BOD5 (98.4-99%) and TOC (76.1-77.3%) was obtained. Additionally, at the temperature of 36°C, the highest reduction in total nitrogen (56.4%) and total phosphorus (58%) was achieved. Aerobic biodegradation allows for efficient treatment of sugar beet distillery stillage (preferably at 36°C).
Author Krzysztof Lutosławski (EaE / IChaFT / DBE)
Krzysztof Lutosławski,,
- 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
Journal seriesBrazilian Journal of Chemical Engineering, ISSN 0104-6632, e-ISSN 1678-4383, (A 25 pkt)
Issue year2017
Vol34
No4
Pages985-996
Publication size in sheets0.55
Keywords in Englishsugar beet, distillery stillage, aerobic biodegradation, thermo- and mesophilic process, Bacillus species
ASJC Classification1500 General Chemical Engineering
DOIDOI:10.1590/0104-6632.20170344s20160417
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
File
Lutoslawski_Cibis_Krzywonos_The_Effect_Of_Temperature.pdf 742,67 KB
Score (nominal)25
Score sourcejournalList
Publication indicators WoS Citations = 1; Scopus Citations = 1; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 0.911; WoS Impact Factor: 2017 = 0.925 (2) - 2017=1.6 (5)
Citation count*2 (2019-12-15)
Cite
Share Share

Get link to the record


* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
Back