Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Removal of Microplastics/Microfibers and Detergents from Laundry Wastewater by Microbubble Flotation
https://orcid.org/0000-0001-8283-8015
https://orcid.org/0000-0001-6093-5324
https://orcid.org/0000-0002-7153-0821
Microplastics (MPs), particularly microplastic fibers (MFs), released during laundry processes, constitute a major source of primary MPs in the water environment, raising growing ecological and environmental concerns. This study developed and evaluated a microbubble-enhanced flotation approach to effectively remove MPs/MFs and surfactantsessential components of commercial detergents and common pollutantsfrom laundry wastewater (LW). Through bench-scale and pilot-scale experiments, we investigated a wide range of parameters affecting recovery efficiency, focusing on MP properties (5 plastic types, 3 particle size ranges, and 4 concentration levels), water chemistry (5 detergent concentrations), and operational conditions (2 types of gases, 3 bubble size ranges, and 3 gas flow rates). Our results showed that under optimized conditions, microbubble flotation could effectively remove over 98 wt % of MPs/MFs and over 95 wt % of surfactants from LW. Moreover, the high removal rates achieved in bench-scale microbubble flotation processes were successfully reproduced in upscaling trials using a pilot-scale bubble column of 5.7 m in height. This work demonstrates the robustness and reliability of microbubble flotation for industrial LW treatment, providing a straightforward, cost-effective, and environmentally friendly solution for the concurrent removal of MPs and surfactants.
Bench-scale and pilot-scale demonstrations of microbubble flotation as an eco-friendly, scalable, and highly effective solution for concurrent removal of microplastics and surfactants from laundry wastewater.
Removal of Microplastics/Microfibers and Detergents from Laundry Wastewater by Microbubble Flotation
https://orcid.org/0000-0001-8283-8015
https://orcid.org/0000-0001-6093-5324
https://orcid.org/0000-0002-7153-0821
Microplastics (MPs), particularly microplastic fibers (MFs), released during laundry processes, constitute a major source of primary MPs in the water environment, raising growing ecological and environmental concerns. This study developed and evaluated a microbubble-enhanced flotation approach to effectively remove MPs/MFs and surfactantsessential components of commercial detergents and common pollutantsfrom laundry wastewater (LW). Through bench-scale and pilot-scale experiments, we investigated a wide range of parameters affecting recovery efficiency, focusing on MP properties (5 plastic types, 3 particle size ranges, and 4 concentration levels), water chemistry (5 detergent concentrations), and operational conditions (2 types of gases, 3 bubble size ranges, and 3 gas flow rates). Our results showed that under optimized conditions, microbubble flotation could effectively remove over 98 wt % of MPs/MFs and over 95 wt % of surfactants from LW. Moreover, the high removal rates achieved in bench-scale microbubble flotation processes were successfully reproduced in upscaling trials using a pilot-scale bubble column of 5.7 m in height. This work demonstrates the robustness and reliability of microbubble flotation for industrial LW treatment, providing a straightforward, cost-effective, and environmentally friendly solution for the concurrent removal of MPs and surfactants.
Bench-scale and pilot-scale demonstrations of microbubble flotation as an eco-friendly, scalable, and highly effective solution for concurrent removal of microplastics and surfactants from laundry wastewater.
Removal of Microplastics/Microfibers and Detergents from Laundry Wastewater by Microbubble Flotation
https://orcid.org/0000-0001-8283-8015
https://orcid.org/0000-0001-6093-5324
https://orcid.org/0000-0002-7153-0821
Microplastics (MPs), particularly microplastic fibers (MFs), released during laundry processes, constitute a major source of primary MPs in the water environment, raising growing ecological and environmental concerns. This study developed and evaluated a microbubble-enhanced flotation approach to effectively remove MPs/MFs and surfactantsessential components of commercial detergents and common pollutantsfrom laundry wastewater (LW). Through bench-scale and pilot-scale experiments, we investigated a wide range of parameters affecting recovery efficiency, focusing on MP properties (5 plastic types, 3 particle size ranges, and 4 concentration levels), water chemistry (5 detergent concentrations), and operational conditions (2 types of gases, 3 bubble size ranges, and 3 gas flow rates). Our results showed that under optimized conditions, microbubble flotation could effectively remove over 98 wt % of MPs/MFs and over 95 wt % of surfactants from LW. Moreover, the high removal rates achieved in bench-scale microbubble flotation processes were successfully reproduced in upscaling trials using a pilot-scale bubble column of 5.7 m in height. This work demonstrates the robustness and reliability of microbubble flotation for industrial LW treatment, providing a straightforward, cost-effective, and environmentally friendly solution for the concurrent removal of MPs and surfactants.
Bench-scale and pilot-scale demonstrations of microbubble flotation as an eco-friendly, scalable, and highly effective solution for concurrent removal of microplastics and surfactants from laundry wastewater.
Removal of Microplastics/Microfibers and Detergents from Laundry Wastewater by Microbubble Flotation
Zhao, Hongying (Autor:in) / Helgason, Arabella (Autor:in) / Leng, Rong (Autor:in) / Chowdhury, Soumalya (Autor:in) / Clermont, Natalia (Autor:in) / Dinh, Jason (Autor:in) / Aldebasi, Renad (Autor:in) / Zhang, Xuehua (Autor:in) / Gattrell, Michael (Autor:in) / Lockhart, James (Autor:in)
ACS ES&T Water ; 4 ; 1819-1833
12.04.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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