Integration of aerobic granulation and UV/H<sub>2</sub>O<sub>2</sub> processes in a continuous flow system for the degradation of sulfolane in contaminated water

Khan, Muhammad Faizan; Yu, Linlong; Hollman, Jordan; Tay, Joo‐Hwa; Achari, Gopal

doi:10.1039/c9ew01048c

Cited by 12 publications

(6 citation statements)

References 60 publications

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“…Figure 3 displays the 16 most abundant genera detected in the 8-chamber PFR as compared with their abundance in the AS control samples. Of these genera, 8 have been previously reported in granular sludge reactors and/or are composed of filamentous organisms and/or producers of EPS: Flavobacterium , Hydrogenophaga , Thiothrix , Pseudomonas , Acidovorax , Cloacibacterium , Acinetobacter , and Aeromonas [ 6 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 47 , 48 ]. In their review of the bacterial composition of aerobic granules, Xia et al [ 6 ] indicated the prevalence of several of the most abundant genera identified in our study, including Flavobacterium , Thiothrix , Acinetobacter , Acidovorax , Hydrogenophaga , and Sphaerotilus .…”

Section: Resultsmentioning

confidence: 99%

“…Biofilm formation is a complex process that is regulated by bacterial signal transduction pathways designed to detect environmental stressors like nutrient deprivation [ 13 , 14 ]. As such, key groups of bacteria capable of synthesizing EPS for biofilm formation have been observed in higher abundance in SBR systems with successful aerobic granulation [ 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ]. In a pilot study, we recently demonstrated that aerobic granulation can be implemented in a simulated plug flow reactor (PFR) using real domestic wastewater [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

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Metagenomic Analysis of a Continuous-Flow Aerobic Granulation System for Wastewater Treatment

Gomeiz,

Sun,

Newborn

et al. 2023

Microorganisms

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Aerobic granulation is an emerging process in wastewater treatment that has the potential to accelerate sedimentation of the microbial biomass during secondary treatment. Aerobic granulation has been difficult to achieve in the continuous flow reactors (CFRs) used in modern wastewater treatment plants. Recent research has demonstrated that the alternation of nutrient-abundant (feast) and nutrient-limiting (famine) conditions is able to promote aerobic granulation in a CFR. In this study, we conducted a metagenomic analysis with the objective of characterizing the bacterial composition of the granular biomass developed in three simulated plug flow reactors (PFRs) with different feast-to-famine ratios. Phylogenetic analyses revealed a clear distinction between the bacterial composition of aerobic granules in the pilot simulated PFRs as compared with conventional activated sludge. Larger and denser granules, showing improved sedimentation properties, were observed in the PFR with the longest famine time and were characterized by a greater proportion of bacteria producing abundant extracellular polymeric substances (EPS). Functional metagenomic analysis based on KEGG pathways indicated that the large and dense aerobic granules in the PFR with the longest famine time showed increased functionalities related to secretion systems and quorum sensing, which are characteristics of bacteria in biofilms and aerobic granules. This study contributes to a further understanding of the relationship between aerobic granule morphology and the bacterial composition of the granular biomass.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metagenomic Analysis of a Continuous-Flow Aerobic Granulation System for Wastewater Treatment

Gomeiz,

Sun,

Newborn

et al. 2023

Microorganisms

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“…In fact, Heydari et al used ethyl acetate for water sample extraction, although no information about the extraction performance was provided in their publication [26]. However, it is worth noting that DCM was used as a replacement for ethyl acetate in their recent publications [13,30]. This may be due to the inadequate extraction performance of ethyl acetate in their procedure, possibly resulting from the lack of the addition of a salt or ionic strength modifier (discussed in Section 3.1.2) [26].…”

Section: Ethyl Acetatementioning

confidence: 99%

Sulfolane Analysis in Environmental Samples: A Critical Review

Kobarfard,

Górecki

2023

Separations

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Sulfolane, a highly water-soluble industrial solvent, has raised environmental concerns due to its widespread usage and its prolonged persistence once released into the environment. To assess the extent of contamination effectively, reliable analytical methods are essential. In this review article, the existing methodologies for the sample preparation and determination of sulfolane are systematically examined and evaluated. In brief, existing guidelines for sampling from environmental matrices provide a solid foundation for sulfolane analysis. Notably, there is little variation in the choice of final determination methods, with GC-MS or GC-FID being favored across all studies. However, substantial variability emerges in sample preparation methods. Moreover, upon scrutiny of the analytical procedures utilized in sulfolane analysis, it becomes evident that a considerable number of them are characterized by inefficiency or environmental hazards, often relying on substantial quantities of chlorinated solvents. Through this review, valuable insights into the challenges at hand and potential solutions can be gained, offering a foundation for the development of novel sulfolane analysis methods applicable to a range of environmental matrices. Overall, this field calls for further research to devise efficient and environmentally sustainable analytical methods for sulfolane analysis.

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“…Recently, aerobic granulation was introduced as an alternative to activated sludge process, 17 which is claimed to have a lower footprint than conventional approaches. Aerobic biodegradation has also been integrated with advanced oxidation processes to increase overall sulfolane removal efficacy 11,20 . In those integration treatment systems, aerobic biodegradation was used as a pre‐treatment process.…”

Section: Introductionmentioning

confidence: 99%

“…Aerobic biodegradation has also been integrated with advanced oxidation processes to increase overall sulfolane removal efficacy. 11,20 In those integration treatment systems, aerobic biodegradation was used as a pre-treatment process. Under aerobic environment, sulfolane can be degraded by microorganisms such as Variovorax paradoxus which has been isolated and identified from sulfolane-contaminated sites.…”

Section: Introductionmentioning

confidence: 99%

A laboratory and field investigation of aerobic biodegradation of sulfolane in groundwater

Mulder

Achari

2021

J of Chemical Tech & Biotech

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BACKGROUND Sulfolane has recently emerged as a contaminant of concern in and around oil and gas processing sites in North America and elsewhere. In this research, a comprehensive laboratory study was conducted to investigate the importance of several factors (nutrient levels, aeration methods and inoculants) involved in aerobic biodegradation of sulfolane in groundwater. The aerobic biodegradation of sulfolane was also evaluated under field conditions, which can provide useful information for future field application. RESULTS A lag period of 40–141 h and a zero‐order rate of 0.6–6 mg L−1 h−1 for sulfolane degradation were observed under different laboratory conditions. The aerobic biodegradation rates observed in the field in Alberta, Canada were 4–6 mg L−1 day−1. A C:N:P ratio of 100:5:1 was determined to be suitable for aerobic degradation of sulfolane. The introduction of sediments from sulfolane‐contaminated sites can shorten the lag period from 141 to 74 h. CONCLUSIONS Sulfolane can be effectively degraded in groundwater using aerobic biodegradation in both laboratory and field conditions. A negative correlation was obtained between adenosine triphosphate and sulfolane concentration when it started to degrade. © 2021 Society of Chemical Industry (SCI).

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Integration of aerobic granulation and UV/H₂O₂ processes in a continuous flow system for the degradation of sulfolane in contaminated water

Abstract: Aerobic granulation and UV/H2O2 in a continuous flow-through reactor can effectively degrade emerging contaminates, such as sulfolane.

Cited by 12 publications

References 60 publications

Metagenomic Analysis of a Continuous-Flow Aerobic Granulation System for Wastewater Treatment

Metagenomic Analysis of a Continuous-Flow Aerobic Granulation System for Wastewater Treatment

Sulfolane Analysis in Environmental Samples: A Critical Review

A laboratory and field investigation of aerobic biodegradation of sulfolane in groundwater

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Integration of aerobic granulation and UV/H2O2 processes in a continuous flow system for the degradation of sulfolane in contaminated water

Abstract: Aerobic granulation and UV/H2O2 in a continuous flow-through reactor can effectively degrade emerging contaminates, such as sulfolane.

Cited by 12 publications

References 60 publications

Metagenomic Analysis of a Continuous-Flow Aerobic Granulation System for Wastewater Treatment

Metagenomic Analysis of a Continuous-Flow Aerobic Granulation System for Wastewater Treatment

Sulfolane Analysis in Environmental Samples: A Critical Review

A laboratory and field investigation of aerobic biodegradation of sulfolane in groundwater

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Product

Resources

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Integration of aerobic granulation and UV/H₂O₂ processes in a continuous flow system for the degradation of sulfolane in contaminated water