Fluorescence Characterization of Natural Organic Matter at a Northern Ontario Wastewater Treatment Plant

Riopel, Rémi; Siemann, Stefan

doi:10.1007/s11270-014-2126-3

Cited by 20 publications

(22 citation statements)

References 49 publications

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“…Studies on DOM removal by fluorescence spectroscopy in conventional WWTPs have also reported the highest removal (40-99%) for fluorescing substances in the region of EEM with emission < 380 nm (i.e., protein, tryptophan-like and tyrosine-like fluorescence) and the observed removal rates were similar under aerobic or anoxic/anaerobic conditions [16,22,49,[51][52][53]. On the contrary, lower removals (10-30%) were reported for fulvic and humic-like components and sometimes production of fluorescence intensities were observed for components sensitive to microbial activity under both aerobic and anoxic/anaerobic conditions [16,22,49,[51][52][53]. It has been suggested that microbial product and fulvic-like fluorescence components are either potentially produced by microbial activity during the process or are recalcitrant to decomposition [14,53,54].…”

Section: Fluorescent Organic Matter Removal In Constructed Wetlandsmentioning

confidence: 90%

“…Similarly to the results found in this work, protein and tryptophan-like substances, which represent the most biodegradable fraction of DOM, revealed the highest removal, whereas lower elimination rates were observed for fulvic and humiclike fluorescence components [44,50]. Studies on DOM removal by fluorescence spectroscopy in conventional WWTPs have also reported the highest removal (40-99%) for fluorescing substances in the region of EEM with emission < 380 nm (i.e., protein, tryptophan-like and tyrosine-like fluorescence) and the observed removal rates were similar under aerobic or anoxic/anaerobic conditions [16,22,49,[51][52][53]. On the contrary, lower removals (10-30%) were reported for fulvic and humic-like components and sometimes production of fluorescence intensities were observed for components sensitive to microbial activity under both aerobic and anoxic/anaerobic conditions [16,22,49,[51][52][53].…”

Section: Fluorescent Organic Matter Removal In Constructed Wetlandsmentioning

confidence: 91%

“…On the contrary, lower removals (10-30%) were reported for fulvic and humic-like components and sometimes production of fluorescence intensities were observed for components sensitive to microbial activity under both aerobic and anoxic/anaerobic conditions [16,22,49,[51][52][53]. It has been suggested that microbial product and fulvic-like fluorescence components are either potentially produced by microbial activity during the process or are recalcitrant to decomposition [14,53,54].…”

Section: Fluorescent Organic Matter Removal In Constructed Wetlandsmentioning

confidence: 99%

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Removal of organic carbon, nitrogen, emerging contaminants and fluorescing organic matter in different constructed wetland configurations

Sgroi

Pelissari

Roccaro

et al. 2018

Chemical Engineering Journal

126

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The elimination of organic carbon, nitrogen, five emerging organic contaminants (EOCs) and fluorescence signature was evaluated in two treatment lines comprising different constructed wetland (CW) configurations: (i) partially saturated vertical subsurface flow (SVF) wetland (treatment line 1) and (ii) unsaturated vertical subsurface flow (UVF), horizontal subsurface flow (HF) and free water surface (FWS) wetlands in series (treatment line 2). Results showed important differences between the different CW configurations. The highest removal of BOD5 (81%), COD (67%), TOC (72%) and fluorescing organic matter were observed in the UVF wetland, whereas the HF and FWS wetlands were the most efficient units for total nitrogen removal (60 and 69%, respectively).The SVF wetland showed a greater performance in the reduction of total nitrogen than the UVF bed (52 vs 35%). In addition, the SVF wetland exhibited a higher removal of the EOCs caffeine (95 vs 90%), trimethoprim (99 vs 87%) and sulfamethoxazole (64 vs 4%), as opposed to DEET (34 vs 63%), whose removal was superior in the UVF unit. Sucralose was negligibly removed in all the CWs. PARAFAC analysis of fluorescence measurements revealed that the proteinaceous tryptophan-like fluorescent component was the most highly removed one in all the investigated CWs (>28%) and, particularly, in the UVF wetland (66%), whereas humic and fulvic-like components resulted recalcitrant to decomposition. Increases of fluorescence intensities were often observed for fulvic-like substances in CWs operating with saturation of the bed, and these were particularly relevant in the SVF unit. Finally, important correlations (r>0.7) between the tryptophanlike fluorescent component and the water quality parameters COD and BOD5 suggest fluorescence spectroscopy as an useful monitoring tool for water treatment efficiency in CW systems.

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Section: Fluorescent Organic Matter Removal In Constructed Wetlandsmentioning

confidence: 90%

Section: Fluorescent Organic Matter Removal In Constructed Wetlandsmentioning

confidence: 91%

Section: Fluorescent Organic Matter Removal In Constructed Wetlandsmentioning

confidence: 99%

See 1 more Smart Citation

Removal of organic carbon, nitrogen, emerging contaminants and fluorescing organic matter in different constructed wetland configurations

Sgroi

Pelissari

Roccaro

et al. 2018

Chemical Engineering Journal

126

View full text Add to dashboard Cite

show abstract

“…The current study complements our previous work [21], on the scale of a Waste Water Treatment Plant (WWTP) at a mid-sized city in Northern Ontario, Canada, in which fluorescence/PARAFAC was applied to track the changes of the NOM between raw sewage and effluent samples of the plant. The work focused on the dynamics of humic-like, fulvic-like and protein-like components.…”

Section: Introductionmentioning

confidence: 79%

“…Human activities can produce other forms of NOM, and potentially modify existing NOM in aquatic systems [15]- [17], either indirectly through land use (e.g., deforestation, agriculture, urbanization, etc.) or more directly through processes such as landfilling, composting [18] [19], or waste water treatment [20] [21].…”

Section: Introductionmentioning

confidence: 99%

Microbial Changes in the Fluorescence Character of Natural Organic Matter from a Wastewater Source

Riopel¹,

Siemann²

2016

JWARP

Self Cite

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Natural Organic Matter (NOM) is a mixture of aromatic and aliphatic organic compounds of natural origin in any type of aquatic system. Human activities impact the constituents of NOM, from its production to its fate, particularly in the treatment of domestic waste waters. In this work, the impact of microorganisms isolated from a Waste Water Treatment Plant (WWTP) was investigated to determine the fate of NOM fractions in raw sewage, using fluorescence spectroscopy. Wastewater samples were taken at three different times from a WWTP, and incubated for 4 days under two treatments: 1) "raw sewage", and 2) "spiked", i.e., the same raw sewage, spiked with bacteria previously isolated from the WWTP. The incubated waters were analyzed by fluorescence spectroscopy, digitally resolved into NOM components: humic-and fulvic-like, and two types of proteinlike, i.e., tryptophan-and tyrosine-like, using a Parallel Factor Analysis routine (PARAFAC). The results demonstrate that the "spiked" samples showed the largest changes with incubation time. The signals of the tryptophan-and tyrosine-like components decreased, suggesting a net microbial digestion of proteinaceous material. In contrast, the fulvic-like signals, and to some extent, the humic-like signals increased, suggesting the production of the associated molecular materials during the incubation period. This study provides direct evidence of human impact on the makeup of NOM: the cultures of microbes found at a WWTP consume the proteinaceous material, whereas humic-like and fulvic-like materials are produced.

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Monitoring biological wastewater treatment processes: recent advances in spectroscopy applications

Mesquita

Quintelas

Amaral

et al. 2017

Rev Environ Sci Biotechnol

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Biological processes based on aerobic and anaerobic technologies have been continuously developed to wastewater treatment and are currently routinely employed to reduce the contaminants discharge levels in the environment. However, most methodologies commonly applied for monitoring key parameters are labor intensive, time-consuming and just provide a snapshot of the process. Thus, spectroscopy applications in biological processes are, nowadays, considered a rapid and effective alternative technology for real-time monitoring though still lacking implementation in full-scale plants. In this review, the application of spectroscopic techniques to aerobic and anaerobic systems is addressed focusing on UV-Vis, infrared, and fluorescence spectroscopy. Furthermore, chemometric techniques, valuable tools to extract the relevant data, are also referred. To that effect, a detailed analysis is performed for aerobic and anaerobic systems to summarize the findings that have been obtained since 2000. Future prospects for the application of spectroscopic techniques in biological wastewater treatment processes are further discussed.

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Fluorescence Characterization of Natural Organic Matter at a Northern Ontario Wastewater Treatment Plant

Cited by 20 publications

References 49 publications

Removal of organic carbon, nitrogen, emerging contaminants and fluorescing organic matter in different constructed wetland configurations

Removal of organic carbon, nitrogen, emerging contaminants and fluorescing organic matter in different constructed wetland configurations

Microbial Changes in the Fluorescence Character of Natural Organic Matter from a Wastewater Source

Monitoring biological wastewater treatment processes: recent advances in spectroscopy applications

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