Challenges of aqueous per- and polyfluoroalkyl substances (PFASs) and their foreseeable removal strategies

Ji, Bin; Kang, Peiying; Wei, Ting; Zhao, Yaqian

doi:10.1016/j.chemosphere.2020.126316

Cited by 89 publications

(30 citation statements)

References 114 publications

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“…Using a single bioremediation approach for PFAS may not be successful duet to the process is very slow therefore using a combination of bioremediation techniques to maximize the remediation of PFAS may offer a better approach (Ji et al, 2020). In one study, a combination of phytoremediation and PFAS-degrading bacteria in a constructed wetland was recommended as an effective and environmentally friendly approach that integrates optimum physio-chemical conditions and enhanced microbial degradation.…”

Section: Future Prospects and Conclusionmentioning

confidence: 99%

“…Therefore, the introduction of defluorinating microorganisms that can use methane and hydrogen as an electron donor, to the constructed wetlands could enhance the breakdown of the C-F bond and the biodegradation of PFAS compounds (Huang and Jaffé, 2019). However, further investigation is required to assess the effectiveness of this approach (Ji et al, 2020).…”

Section: Future Prospects and Conclusionmentioning

confidence: 99%

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Challenges and Current Status of the Biological Treatment of PFAS-Contaminated Soils

Shahsavari

Rouch

Khudur

et al. 2021

Front. Bioeng. Biotechnol.

113

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Per- and polyfluoroalkyl substances (PFAS) are Synthetic Organic Compounds (SOCs) which are of current concern as they are linked to a myriad of adverse health effects in mammals. They can be found in drinking water, rivers, groundwater, wastewater, household dust, and soils. In this review, the current challenge and status of bioremediation of PFAs in soils was examined. While several technologies to remove PFAS from soil have been developed, including adsorption, filtration, thermal treatment, chemical oxidation/reduction and soil washing, these methods are expensive, impractical for in situ treatment, use high pressures and temperatures, with most resulting in toxic waste. Biodegradation has the potential to form the basis of a cost-effective, large scale in situ remediation strategy for PFAS removal from soils. Both fungal and bacterial strains have been isolated that are capable of degrading PFAS; however, to date, information regarding the mechanisms of degradation of PFAS is limited. Through the application of new technologies in microbial ecology, such as stable isotope probing, metagenomics, transcriptomics, and metabolomics there is the potential to examine and identify the biodegradation of PFAS, a process which will underpin the development of any robust PFAS bioremediation technology.

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Section: Future Prospects and Conclusionmentioning

confidence: 99%

Section: Future Prospects and Conclusionmentioning

confidence: 99%

Challenges and Current Status of the Biological Treatment of PFAS-Contaminated Soils

Shahsavari

Rouch

Khudur

et al. 2021

Front. Bioeng. Biotechnol.

113

View full text Add to dashboard Cite

show abstract

“…This phenomenon is in good agreement with the other related reports [29][30][31] . Long-chain PFASs with a larger number of C-F units are more hydrophobic than the short-chain ones, leading to higher hydrophobic interaction by amyloid fibrils [32][33][34] . Meanwhile, the short-chain PFASs are more soluble, and the effect of hydrophobicity decreases significantly.…”

Section: Amyloid Fibril Membrane For Pfas Adsorptionmentioning

confidence: 99%

Amyloid fibril-based membranes for PFAS removal from water

Jin

Peydayesh

Joerss

et al. 2021

Environ. Sci.: Water Res. Technol.

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“…One issue worth considering in the next generation of water treatment models is emerging organic contaminants (EOCs), such as antibiotics, antibiotics resistance genes, pesticide, and perand polyfluoroalkyl substances (PFASs), etc. [70]. Due to their difficult elimination, EOCs have been highlighted as a worldwide environmental issue, and some of EOCs have been listed in EU legislation [71].…”

Section: Emerging Pollutants Modeling In Cwsmentioning

confidence: 99%

“…There is no doubt that numerical simulation will provide a reliable technical means for relevant study. Most recently, Ji et al [70] have reviewed the PFAS removal and have proposed the strategy that CWs may have the potential to curb these kinds of newly emerging pollutants. Accordingly, the development of CW modeling should consider these kinds of compounds in the future development.…”

Section: Emerging Pollutants Modeling In Cwsmentioning

confidence: 99%

Numerical Models of Subsurface Flow Constructed Wetlands: Review and Future Development

et al. 2020

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Numerical model as a simulation tool was used to describe the pollutants transformation and degradation process in constructed wetlands (CWs). It can help provide insight into the “black box” and increase the understanding of the complex processes in CWs. In the last few decades, several process-based numerical models were developed to depict the pollutants removal processes in CWs, which include biochemical model, hydraulic model, reactive-transport model, plants model, clogging model, and coupling model combining two or more sub-models. However, there was a long way to go before fully understanding the decontamination mechanisms of CWs. On the one hand, single or a composite model coupling a small number of sub-models cannot fully reveal the decontamination processes. On the other hand, a comprehensive model including all sub-models of current cognition involves numerous parameters, most of which are interaction and cannot quantitatively determined, thus making the model complex and leading to diffuse interaction. Therefore, in order to describe the reaction processes in CWs more accurately, it is expected that all parameters should be quantified as far as possible in the future model. This study aims to provide a review of the numerical models of CWs and to reveal mechanism of decontamination. Based on the advantages and disadvantages of existing models, the study presented the improvement method and future research direction: (1) new detection/monitoring technique or computing method to quantitatively assess the parameters in CWs models, (2) correcting the simulation errors caused by the assumption of Activated Sludge Models (ASMs) and developing a complete biofilm reaction sub-model, (3) simplification of the comprehensive model, and (4) need of emerging pollutants modeling.

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Challenges of aqueous per- and polyfluoroalkyl substances (PFASs) and their foreseeable removal strategies

Cited by 89 publications

References 114 publications

Challenges and Current Status of the Biological Treatment of PFAS-Contaminated Soils

Challenges and Current Status of the Biological Treatment of PFAS-Contaminated Soils

Amyloid fibril-based membranes for PFAS removal from water

Numerical Models of Subsurface Flow Constructed Wetlands: Review and Future Development

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