Effect of COD:SO4 2− Ratio, HRT and Linoleic Acid Concentration on Mesophilic Sulfate Reduction: Reactor Performance and Microbial Population Dynamics

Moon, Christina H.; Singh, Rajesh; Veeravalli, Sathyanarayan S.; Shanmugam, S; Chaganti, Subba Rao; Lalman, Jerald A.; Heath, Daniel D.

doi:10.3390/w7052275

Cited by 23 publications

(12 citation statements)

References 41 publications

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“…Clostridium spp. have been reported capable of producing VFAs from organic substrates 42 . The enrichment of Clostridia in SRB + FAB from 1.3% to 29.6% agrees with enhanced VFA production in our study.…”

Section: Resultssupporting

confidence: 90%

“…have been reported capable of producing VFAs from organic substrates. 42 The enrichment of Clostridia in SRB + FAB from 1.3% to 29.6% agrees with enhanced VFA production in our study. Besides the VFA-producing class, many pollutant-degrading microbes (class level) were also enriched including Deltaproteobacteria, which belongs to SRB 60 and is capable of biodegrading different hydrocarbons under strictly anaerobic conditions.…”

Section: Wileyonlinelibrarycom/jctbsupporting

confidence: 89%

“…However, the lower COD:SO 4 2− ratio and alkaline pH promoted butyric acid production, resulting in an improved butyrate concentration from 4.90 mmol L −1 (S1) to 6.48 mmol L −1 (S4) (Table 1). 42,43 Moreover, the negligible propionate production (supporting information, Figs S3(a) and (b)) could also be linked to alkaline pH 36,37 and the lower COD:SO 4 2− ratio 42 …”

Section: Resultsmentioning

confidence: 98%

“…42,43 Moreover, the negligible propionate production (supporting information, Figs S3(a) and (b)) could also be linked to alkaline pH 36,37 and the lower COD: SO 4 2− ratio. 42 The sulfate removal efficiency was reduced from 98% (S1) to 71% (S4) (Fig. 4(b)) with increasing sulfate concentrations.…”

Section: Effect Of Cbz Loadingmentioning

confidence: 96%

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Carbamazepine biodegradation and volatile fatty acids production by selectively enriched sulfate‐reducing bacteria and fermentative acidogenic bacteria

Tahir

Miran

Jang³

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND The micropollutant carbamazepine (CBZ) is persistent and resistant to conventional wastewater treatment. This study investigated the role of fermentative acidogenic bacteria (FAB) and sulfate‐reducing bacteria (SRB) for CBZ biodegradation and volatile fatty acid (VFA) production. RESULTS The experimental results demonstrated that CBZ biodegradation, total organic carbon and sulfate removal efficiency reached 46%, 36% and 98%, respectively, after 144 h of operation with VFA production of acetic acid (20.72 mmol L−1), propionic acid (3.67 mmol L−1) and butyric acid (4.90 mmol L−1). However, the acetate fraction decreased from 78% to 70% with a decrease in chemical oxygen demand/sulfate (COD:SO42−) ratios from 1.06 to 0.35, respectively, suggesting that acetate was partially oxidized by SRB under substrate/COD limiting conditions. The biodegradation performance of SRB + FAB was also compared with that of a mixed microbial community (MMC). CONCLUSIONS Upon increasing the initial CBZ concentration from 42.3 to 169.2 μmol L−1, SRB + FAB exhibited much higher CBZ biodegradation (33%) than MMC (12%). Microbial community analyses confirmed the enrichment of VFA‐producing species including phylum Firmicutes (2.4% to 36.8%) and class Clostridia (1.3% to 29.6%). Moreover, aromatic and nitroaromatic compound‐degrading bacteria such as Escherichia and Desulfovibrio were also enriched. This signifies the applicability of SRB + FAB to pharmaceutical pollutant biodegradation in the environment. © 2020 Society of Chemical Industry (SCI)

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Section: Resultssupporting

confidence: 90%

Section: Wileyonlinelibrarycom/jctbsupporting

confidence: 89%

Section: Resultsmentioning

confidence: 98%

Section: Effect Of Cbz Loadingmentioning

confidence: 96%

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Carbamazepine biodegradation and volatile fatty acids production by selectively enriched sulfate‐reducing bacteria and fermentative acidogenic bacteria

Tahir

Miran

Jang³

et al. 2020

J of Chemical Tech & Biotech

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“…These globally poor yields were guided by the rise of COD/SO 4 ratio. On the other hand, Moon et al (2015) obtained their best yields (87%) at the lowest COD/SO 4 ratio (0.8). These antagonist results show the lack of a consistent trend in the impact of COD/SO 4 ratio.…”

Section: The Use Of Microbial Sulfate Reductionmentioning

confidence: 96%

Over-sulfated soils and sediments treatment: A brief discussion on performance disparities of biological and non-biological methods throughout the literature

Ahmat

Mamindy-Pajany

2021

Waste Manag Res

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High sulfate concentrations in industrial effluents as well as solid materials (excavated soils, dredged sediments, etc.) are a major hindrance for circular economy outlooks. SO42- acceptability standards are indeed increasingly restrictive, given the potential outcomes for public health and ecosystems. This literature review deals with the treatment pathways relying on precipitation, adsorption and microbial redox principles. Although satisfactory removal performances can be achieved with each of them, significant yield differences are displayed throughout the bibliography. The challenge here was to identify the parameters leading to this variability and to assess their impact. The precipitation pathway is based on the formation of two main minerals (ettringite and barite). It can lead to total sulfate removal but can also be limited by aqueous wastes chemistry. Stabilizer kinetics of formation and equilibrium are highly constrained by background properties such as pH, Eh, SO42- saturation state and inhibiting metal occurrences. Regarding the adsorption route, sorbents’ intrinsic features such as the qmax parameter govern removal yields. Concerning the microbial pathway, the chemical oxygen demand/SO42- ratio and the hydraulic retention time, which are classically evoked as yield variation factors, appear here to be weakly influential. The effect of these parameters seems to be overridden by the influence of electron donors, which constitute a first order factor of variability. A second order variability can be read according to the nature of these electron donors. Approaches using simple monomers (ethanol lactates, etc.) perform better than those using predominantly ligneous organic matter.

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Comparative study of the removal of sulfate by UASB in light and dark environment

Ye,

Yan,

Luo

et al. 2024

Bioprocess Biosyst Eng

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Effect of COD:SO4 2− Ratio, HRT and Linoleic Acid Concentration on Mesophilic Sulfate Reduction: Reactor Performance and Microbial Population Dynamics

Abstract: ) and HRTs (12, 24 and 36 h), HACs were not detected.

Cited by 23 publications

References 41 publications

Carbamazepine biodegradation and volatile fatty acids production by selectively enriched sulfate‐reducing bacteria and fermentative acidogenic bacteria

Carbamazepine biodegradation and volatile fatty acids production by selectively enriched sulfate‐reducing bacteria and fermentative acidogenic bacteria

Over-sulfated soils and sediments treatment: A brief discussion on performance disparities of biological and non-biological methods throughout the literature

Comparative study of the removal of sulfate by UASB in light and dark environment

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