Innovating Ferro-sonication approach for extracting microplastics from wastewater

For accurate and reliable analysis of microplastics (MPs) in wastewater (WW), it is imperative to comprehend the significance of pre-treating WW before analysis. The suspended solids (SS) in the matrix tend to adhere to the MPs during filtration, which interferes with the detection of the MPs. In th...

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Bibliographic Details
Published in:The Science of the total environment 2024-11, Vol.951, p.175595, Article 175595
Main Authors: Mathew, Juviya, Bhardwaj, Gaurav, Pulicharla, Rama, Rezai, Pouya, Brar, Satinder Kaur
Format: Article
Language:English
Subjects:
Differential scanning calorimetry
Ferro-sonication
Laser direct infrared (LD-IR) imaging
Microplastics
Wastewater
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Summary:For accurate and reliable analysis of microplastics (MPs) in wastewater (WW), it is imperative to comprehend the significance of pre-treating WW before analysis. The suspended solids (SS) in the matrix tend to adhere to the MPs during filtration, which interferes with the detection of the MPs. In this regard, the present study aims to develop and optimize a pretreatment method to improve the extraction efficiency of MPs from WW by reducing the SS. A combination of the Fenton reaction and ultrasonication, ferro-sonication (Fe-UlS), was proposed to digest and eliminate the SS from WW. This hybrid pretreatment, Fe-UlS, was optimized for ultrasonication amplitude, treatment time, and hydrogen peroxide dose using response surface methodology (RSM) with a Box-Behnken design, achieving a desirability of 0.984. The optimum conditions for the Fe-UlS, such as the (1:1) Fenton reagent ratio (0.05 M FeSO4: 30 % H2O2), ultrasonication amplitude (31 %), and total process time (30 min) were found to be statistically significant (p 
ISSN:0048-9697
1879-1026
1879-1026
DOI:10.1016/j.scitotenv.2024.175595