Continuous Biodegradation of Sugar Beet Distillery
Stillage in an Aerobic Stirred-Tank Reactor:
The Effect of Hydraulic Retention Time

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

doi:10.15244/pjoes/110039

Cited by 3 publications

(5 citation statements)

References 25 publications

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“…The decrease in TOC (from 57.9 mg/L at 0 h to 31.9 mg/L at 24 h) indicated the consumption of GB as an electron donor for HDN, while the increase of SO 4 2− -S (from 2.4 mg/L at 0 h to 7.2 mg/L at 24 h) predicted the occurrence of S 0 -ADN. Although the biodegradation of GB has been reported in both anaerobic and aerobic processes, 24,25 this study also confirms its role as an organic carbon in NO 2 − -N reduction.…”

Section: The Reduction Of No 2 − -N With Gb As An Organic Electron Do...supporting

confidence: 80%

“…However, NAE decreased with GB addition, illustrating that the nitrite produced from S 0 -PDN was further reduced through an alternative pathway. GB, acting as an organic carbon source, can be utilized by HDB as an electron donor to convert NO 2 – -N to N 2 . , To determine the role of GB in nitrite reduction in R3, a batch test was carried out as shown in Section .…”

Section: Resultsmentioning

confidence: 99%

“…GB, acting as an organic carbon source, can be utilized by HDB as an electron donor to convert NO 2 − -N to N 2 . 24,25 To determine the role of GB in nitrite reduction in R3, a batch test was carried out as shown in Section 3.3.2.…”

Section: The Performance Of S 0 -Pdn Reactors With the Addition Of Gb...mentioning

confidence: 99%

“…19,21 GB has shown significant potential in improving the tolerance of ANAMMOX and other anaerobic biotechnologies to highsalinity stress. 22,23 While GB can be used in bioprocess to cope with high salinity conditions, it can also be degraded by microorganisms, 24,25 suggesting that GB may serve as an electron donor for heterotrophic denitrification (HDN). Taken together, whether GB improves the tolerance of S 0 -PDN to salinity and whether it affects the nitrite accumulation remain to be studied.…”

Section: Introductionmentioning

confidence: 99%

“…In high-salinity environments, various microorganisms can utilize compatible solutes to balance osmotic pressure between the cytoplasm and the external environment. , Glycine betaine (GB) has been extensively studied as a commonly used osmoprotectant to antagonize high-salinity stress. , GB has shown significant potential in improving the tolerance of ANAMMOX and other anaerobic biotechnologies to high-salinity stress. , While GB can be used in bioprocess to cope with high salinity conditions, it can also be degraded by microorganisms, , suggesting that GB may serve as an electron donor for heterotrophic denitrification (HDN). Taken together, whether GB improves the tolerance of S 0 -PDN to salinity and whether it affects the nitrite accumulation remain to be studied.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effect of High Salinity on Elemental Sulfur Autotrophic Partial Denitrification and Feasibility Evaluation of an Enhanced Strategy with Glycine Betaine Addition: Performance, Microorganisms, and Mechanisms

Li,

Chen,

Zhang

et al. 2024

ACS EST Eng.

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Elemental sulfur autotrophic partial denitrification (S 0 -PDN) can supply nitrite for anaerobic ammonium oxidation without an organic carbon requirement. This study aimed to evaluate the impact of high salinity on S 0 -PDN and investigate the feasibility of an enhanced strategy involving the addition of glycine betaine (GB). The results showed that high salinity inhibited S 0 -PDN by over 60% as salinity increased from low (0 and 5 g/L) to high (10 and 15 g/L) levels, even though Thiobacillus (65.9%−84.0%) was always the dominant genus. The reason might be the suppression of high salinity on the bioactivity. Surprisingly, the addition of GB (1 mmol/L) effectively enhanced the performance of S 0 -PDN under high salinity conditions (10 g/L), resulting in a 5.1-fold increase in the NO 3 − -N conversion efficiency and a 3.1-fold increase in the effluent NO 2 − -N concentration. Metagenomics analysis revealed that high salinity did not alter the dominant microbial composition. GB facilitated the recovery of the nitrate conversion capacity of sulfur autotrophic denitrifying bacteria with the up-regulation of nitrate reductase genes (by 18.1%) and Sox genes (by 21.4%). However, GB also stimulated the growth of heterotrophic denitrifying bacteria. Part of the nitrite produced in S 0 -PDN was reduced through heterotrophic denitrification with GB as an electron donor. Overall, the addition of GB was demonstrated as an effective approach to mitigate the inhibitory effects of high salinity on S 0 -PDN, which offers valuable theoretical support for its application in high-salinity wastewater treatment.

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Section: The Reduction Of No 2 − -N With Gb As An Organic Electron Do...supporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: The Performance Of S 0 -Pdn Reactors With the Addition Of Gb...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of High Salinity on Elemental Sulfur Autotrophic Partial Denitrification and Feasibility Evaluation of an Enhanced Strategy with Glycine Betaine Addition: Performance, Microorganisms, and Mechanisms

Li,

Chen,

Zhang

et al. 2024

ACS EST Eng.

View full text Add to dashboard Cite

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Using computer tools for the evaluation of biodegradability, toxicity, and activity on the AT1 receptor of degradation products identified in the removal of valsartan by using photo-electro-Fenton process

Espinosa-Barrera

Delgado-Vargas

Martínez-Pachón

et al. 2021

Environ Sci Pollut Res

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Efficiency of aerobic biodegradation of sugar beet distillery stillage under dissolved oxygen tension-controlled conditions

Lutosławski,

Ryznar-Luty,

Cibis

2024

PLoS ONE

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The efficiency of aerobic biodegradation of distillery wastewater using various microbial cultures is intricately linked to process conditions. The study aimed to examine the aerobic biodegradation by a Bacillus bacteria under controlled dissolved oxygen tension (DOT) conditions as a novel approach in the treatment of sugar beet distillery stillage. The processes were conducted in a 2-L Biostat®B stirred-tank reactor (STR), at a temperature of 36°C, with aeration of 1.0 L/(L·min), and uncontrolled pH of the medium (an initial pH of 8.0). Each experiment was performed at a different DOT setpoint: 75%, 65% and 55% saturation, controlled through stirrer rotational speed adjustments. The study showed that the DOT setpoint did not influence the process efficiency, determined by the pollutant load removal expressed as COD, BOD5 and TOC. In all three experiments, the obtained reduction values of these parameters were comparable, falling within the narrow ranges of 78.6–78.7%, 97.3–98.0% and 75.0–76.4%, respectively. However, the DOT setpoint did influence the rate of process biodegradation. The removal rate of the pollutant load expressed as COD, was the lowest when DOT was set at 55% (0.48 g O2/(L•h)), and the highest when DOT was set at 65% (0.55 g O2/(L•h)). For biogenic elements (nitrogen and phosphorus), a beneficial effect was observed at a low setpoint of controlled DOT during biodegradation. The maximum extent of removal of both total nitrogen (54%) and total phosphorus (67.8%) was achieved at the lowest DOT setpoint (55%). The findings suggest that conducting the batch aerobic process biodegradation of sugar beet stillage at a relatively low DOT setpoint in the medium might achieve high efficiency pollutant load removal and potentially lead to a reduction in the process cost.

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Continuous Biodegradation of Sugar Beet Distillery Stillage in an Aerobic Stirred-Tank Reactor: The Effect of Hydraulic Retention Time

Cited by 3 publications

References 25 publications

Effect of High Salinity on Elemental Sulfur Autotrophic Partial Denitrification and Feasibility Evaluation of an Enhanced Strategy with Glycine Betaine Addition: Performance, Microorganisms, and Mechanisms

Effect of High Salinity on Elemental Sulfur Autotrophic Partial Denitrification and Feasibility Evaluation of an Enhanced Strategy with Glycine Betaine Addition: Performance, Microorganisms, and Mechanisms

Using computer tools for the evaluation of biodegradability, toxicity, and activity on the AT1 receptor of degradation products identified in the removal of valsartan by using photo-electro-Fenton process

Efficiency of aerobic biodegradation of sugar beet distillery stillage under dissolved oxygen tension-controlled conditions

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