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Advanced treatment of microplastics and antibiotic-containing wastewater using integrated modified dissolved air flotation and pulsed cavitation-impinging stream processes

Journal of Hazardous Materials Advances 2022 14 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 35 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Fu Chen, Xiaoxiao Li, Jing Ma, Jing Ma, Jing Ma, Yanfeng Zhu, Yanfeng Zhu, Fu Chen, Jing Ma, Jing Ma, Jing Ma, Jing Ma, Xiaoxiao Li, Xiaoxiao Li, Jing Ma, Fu Chen, Jing Ma, Yanfeng Zhu, Yanfeng Zhu, Siyan Zeng, Xiaoxiao Li, Fu Chen, Xiaoxiao Li, Grzegorz Lisak Grzegorz Lisak Jing Ma, Fu Chen, Fu Chen, Grzegorz Lisak Fu Chen, Jing Ma, Jing Ma, Fu Chen, Siyan Zeng, Siyan Zeng, Grzegorz Lisak

Summary

Researchers developed a combined system integrating modified dissolved air flotation with pulsed cavitation-impinging stream treatment for livestock wastewater, achieving 88.3% microplastic removal and greater than 97% antibiotic removal while eliminating 100% of antibiotic resistance genes, with the process generating hydroxyl radicals across a wide pH range without additional chemical inputs.

Study Type Environmental

Livestock and poultry breeding wastewater is a major reservoir of antibiotic resistance genes (ARGs) and antibiotics residues, and it is also a potential reservoir of microplastics (MPs). In this work, a novel system consisting of modified dissolved air flotation (MDAF) and self-excited oscillating pulsed cavitation-impinging (SOPC) processes was established to explore the removal performance of ARGs, antibiotics and MPs. Polydimethyldiallyl ammonium chloride (PDAC) showed better performance than cetyltrimethylammonium bromide (CTAB) in MDAF. At a saturation pressure of 0.4 MPa and 0.8 mg/L of PDAC, 88.3% of MPs was removed by MDAF. More than 97% of antibiotics and 100% ARGs were removed during the SOPC treatment, and 99.2% of antibiotics were removed by the combined system. The SOPC can stably generate hydroxyl radicals (•OH) in wide pH ranges without additional chemicals. This study demonstrates that the hybrid system has the potential to be applied for the advanced treatment of wastewater containing ARGs and MPs.

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