National wastewater reconnaissance of artificial sweetener consumption and emission in Australia

Li, Dandan; O’Brien, Jake; Tscharke, Benjamin J.; Choi, Phil M.; Zheng, Qiuda; Ahmed, Fahad; Thompson, Jack; Mueller, Jochen F.; Sun, Hongwen; Thomas, Kevin V.

doi:10.1016/j.envint.2020.105963

Cited by 31 publications

(7 citation statements)

References 42 publications

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“…Because social gatherings during major events are associated with SARS-CoV-2 spread, multiple indicators might give confidence and overcome some of the biases of individual parameters. On the basis of the results of previous studies, ,, a large-scale, long-term study should be conducted to evaluate wastewater indicators relative to census data.…”

Section: Resultsmentioning

confidence: 99%

RNA in Municipal Wastewater Reveals Magnitudes of COVID-19 Outbreaks across Four Waves Driven by SARS-CoV-2 Variants of Concern

et al. 2022

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There are no standardized protocols for quantifying severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in wastewater to date, especially for population normalization. Here, a pipeline was developed, applied, and assessed to quantify SARS-CoV-2 and key variants of concern (VOCs) RNA in wastewater at Saskatoon, Canada. Normalization approaches using recovery ratio and extraction efficiency, wastewater parameters, or population indicators were assessed by comparing to daily numbers of new cases. Viral load was positively correlated with daily new cases reported in the sewershed. Wastewater surveillance (WS) had a lead time of approximately 7 days, which indicated surges in the number of new cases. WS revealed the variant α and δ driving the third and fourth wave, respectively. The adjustment with the recovery ratio and extraction efficiency improved the correlation between viral load and daily new cases. Normalization of viral concentration to concentrations of the artificial sweetener acesulfame K improved the trend of viral load during the Christmas and New Year holidays when populations were dynamic and variable. Acesulfame K performed better than pepper mild mottle virus, creatinine, and ammonia for population normalization. Hence, quality controls to characterize recovery ratios and extraction efficiencies and population normalization with acesulfame are promising for precise WS programs supporting decision-making in public health.

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Section: Resultsmentioning

confidence: 99%

RNA in Municipal Wastewater Reveals Magnitudes of COVID-19 Outbreaks across Four Waves Driven by SARS-CoV-2 Variants of Concern

et al. 2022

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“…1,2 Among them, sucralose (SUC), aspartame (APM), acesulfame (ACE) and neotame (NTM) are the most popular artificial sweeteners around the world and are consumed the most in China. 3–5 The consumption of APM is the most (18.5 × 10 3 metric tons (Mt)) in food and beverage products, followed by ACE (6.8 × 10 3 Mt) and SUC (3.3 × 10 3 Mt). 6 And NTM has been recognized by the public as a second-generation sweetener.…”

Section: Introductionmentioning

confidence: 99%

“…6 And NTM has been recognized by the public as a second-generation sweetener. 3 Owing to the huge consumption in daily life, artificial sweeteners have been detected frequently with high concentrations in environmental media globally. 7–9 Additionally, ACE and SUC were proved to be persistent during WWTPs.…”

Section: Introductionmentioning

confidence: 99%

Occurrence and removal of four artificial sweeteners in wastewater treatment plants of China

Shen

Lei

et al. 2023

Environ. Sci.: Processes Impacts

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“…Literature data suggest that the degradation of ACE in WWTPs first occurred in 2010, with a greater capability in small to medium plants without oxygen and temperature impediments. Li et al (2020) reported removal rates of 74 ± 42% in a study carried out in 69 WWTPs across Australia. Despite this seasonal removal, after analyzing 12 WWTPs and 7 septic systems, Van Stempvoort et al…”

Section: Introductionmentioning

confidence: 99%

Seasonal biodegradation of the artificial sweetener acesulfame enhances its use as a transient wastewater tracer

Marazuela¹,

Formentin²,

Erlmeier³

et al. 2022

Preprint

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The persistence of the artificial sweetener acesulfame potassium (ACE) in wastewater treatment and subsequently in the aquatic environment has made it a widely used marker of wastewater in both surface water and groundwater. However, the recently observed biodegradation of ACE during wastewater treatment has questioned the validity of this application. In this study, we assessed the use of ACE not only as a marker of wastewater, but also as a transient wastewater tracer that allows both the calculation of mixing ratios and travel times through the aquifer as well as the calibration of transient groundwater flow and mass transport models. Our analysis was based on the data obtained in a nearly 8-year river water and groundwater sampling campaign along a confirmed wastewater-receiving riverbank filtration site located close to a drinking water supply system. We confirm that temperature controls ACE concentrations and thus their seasonal oscillation. River water data showed that ACE loads decreased from 1,500-4,000 μg·s−1 from December to June (cold season; T<10°C) to 0-500 μg·s−1 from July to November (warm season; T>10°C). This seasonal oscillation was transferred to the aquifer and preserved >3 km through the aquifer, with ACE concentrations oscillating between values below the detection limit in the warm season to 0.15 μg·L−1 in the cold season. The seasonal variation in ACE degradation during wastewater treatment enables the sweetener’s use as a transient tracer of wastewater inflows and riverbank filtration. In addition, the arrival time of the ACE concentration peak can be used to estimate groundwater flow velocity and mixing ratios, thereby demonstrating its potential in the calibration of groundwater numerical models.

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National wastewater reconnaissance of artificial sweetener consumption and emission in Australia

Cited by 31 publications

References 42 publications

RNA in Municipal Wastewater Reveals Magnitudes of COVID-19 Outbreaks across Four Waves Driven by SARS-CoV-2 Variants of Concern

RNA in Municipal Wastewater Reveals Magnitudes of COVID-19 Outbreaks across Four Waves Driven by SARS-CoV-2 Variants of Concern

Occurrence and removal of four artificial sweeteners in wastewater treatment plants of China

Seasonal biodegradation of the artificial sweetener acesulfame enhances its use as a transient wastewater tracer

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