Algal/bacterial uptake kinetics of dissolved organic nitrogen in municipal wastewater treatment facilities effluents

Yan, Chenxi; Liu, Jiayin; Wei, Zhiyu; Chen, Jie; Ji, Yanhong; Fan, Lu

doi:10.1016/j.jenvman.2022.114719

Cited by 6 publications

(1 citation statement)

References 37 publications

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“…Algae are efficient primary producers and have been used to evaluate water quality and toxicity of environmental pollutants. − For example, the use of algae for the removal of organic contaminants has been demonstrated for wastewater treatment. , In the present study, macroalgae contained significantly ( p < 0.0001) more PFAS compared to submerged vascular AV. While the physiochemical properties of PFAS differ from that of heavy metals, the factors that contribute to heavy metal uptake may also allow for greater PFAS accumulation in macroalgae compared to certain submerged vascular species.…”

Section: Resultsmentioning

confidence: 54%

Aquatic Vegetation, an Understudied Depot for PFAS

Griffin

Hall

Brown

et al. 2023

J. Am. Soc. Mass Spectrom.

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Per- and polyfluoroalkyl substances (PFAS) are a class of manufactured chemicals that have been extensively utilized worldwide. We hypothesize that the presence, uptake, and accumulation of PFAS in aquatic vegetation (AV) is dependent upon several factors, such as the physiochemical properties of PFAS and proximity to potential sources. In this study, AV was collected from eight locations in Florida to investigate the PFAS presence, accumulation, and spatiotemporal distribution. PFAS were detected in AV at all sampling locations, with a range from 0.18 to 55 ng/g sum (∑)PFAS. Individual PFAS and their concentrations varied by sampling location, time, and AV species. A total of 12 PFAS were identified, with the greatest concentrations measured in macroalgae. The average bioconcentration factor (BCF) among all samples was 1225, indicating high PFAS accumulation in AV from surface water. The highest concentrations, across all AV types, were recorded in the Indian River Lagoon (IRL), a location with a history of elevated PFAS burdens. The present study represents the first investigation of PFAS in naturally existing estuarine AV, filling an important gap on PFAS partitioning within the environment, as well as providing insights into exposure pathways for aquatic herbivores. Examining the presence, fate, and transport of these persistent chemicals in Florida’s waterways is critical for understanding their effect on environmental, wildlife, and human health.

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Section: Resultsmentioning

confidence: 54%

Aquatic Vegetation, an Understudied Depot for PFAS

Griffin

Hall

Brown

et al. 2023

J. Am. Soc. Mass Spectrom.

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Quantitative study on the structure-bioavailability relationship of dissolved organic nitrogen in wastewater treatment plant effluent

Yan

Wei

Liu

et al. 2022

Environ Sci Pollut Res

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This study systematically investigated the relationship between the structure properties and biological characteristics of DON in the e uents from municipal wastewater treatment plants. Ultra ltration, FTIR spectroscopy, UV spectroscopy and EEM uorescence spectroscopy were used to characterize the structure of organic matters in the e uent samples, and the bioavailability of DON was determined by algal/bacterial based bioassay. The quantitatively analysis of EEM spectra conducted by uorescence regional integration method showed that the organic portion of all samples were mainly consistent with fulvic acid and protein. Combined with the bioassay results, a positive correlation between the DON bioavailability and the protein content (sum of region I and region II) (r=0.80, P 0.02) and soluble microbial byproduct-like materials (region IV) (r=0.76, P 0.03) were observed. Nevertheless, the humic substances content represented by the region III and V would negatively affect the DON bioavailability.High humi cation degree (high HIX value) (r=-0.77, P 0.03) was related to low bioavailability. Furthermore, according to UV spectroscopy results, strong aromaticity (high UV 254 values) (r=-0.78, P 0.03) suggested low DON bioavailability. The ultra ltration experiment showed that the low molecular weight DON ( 3kDa) accounted for 30-73% of the total DON, and no notable relationship was observed for DON molecular weight and its bioavailability.

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Enhanced coagulation for removal of dissolved organic nitrogen in water: A review

Jathan,

Marchand

2024

Chemosphere

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Algal/bacterial uptake kinetics of dissolved organic nitrogen in municipal wastewater treatment facilities effluents

Cited by 6 publications

References 37 publications

Aquatic Vegetation, an Understudied Depot for PFAS

Aquatic Vegetation, an Understudied Depot for PFAS

Quantitative study on the structure-bioavailability relationship of dissolved organic nitrogen in wastewater treatment plant effluent

Enhanced coagulation for removal of dissolved organic nitrogen in water: A review

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