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Occurrence, fate and removal of microplastics as heavy metal vector in natural wastewater treatment wetland system

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Title Occurrence, fate and removal of microplastics as heavy metal vector in natural wastewater treatment wetland system
 
Creator Dhruba Jyoti Sarkar
Soma Das Sarkar
Basanta Kumar Das
Bigan K. Sahoo
Akankshya Das
S.K.Nag
R. K. Manna
B. K. Behera
Srikanta Samanta
 
Subject Microplastics,Heavy metal,Natural wastewater treatment system,Freshwater wetlands,Removal efficiency
 
Description Not Available
Microplastics pollution in aquatic ecosystems is of great concern; however, systemic investigations are still lacking in freshwater wetland systems used for wastewater treatment. The present study discusses such freshwater wetland system in Eastern India to understand its microplastics transport mechanism, heavy metals association and microplastics removal efficiency. Microplastics (63 ?m - 5 mm) were heavily found in surface water and sediments of treatment ponds (7.87 to 20.39 items/L and 2124.84 to 6886.76 items/kg) and associated wastewater canals (30.46 to 137.72 items/L and 1108.78 to 34612.87 items/kg). A high content of toxic metals (As, Cd, Cr, Cu, Ni, Pb and Zn) were found on the microplastics with polyethylene terephthalate and polyethylene as major plastics types which were also found in fishes and macroinvertebrates of treatment ponds. Machine learning algorithm revealed a close association between microplastics content in fishes and surface water, indicating risk associated with floating microplastics to the aquatic biota. The study also revealed that microplastics were acting as heavy metals vector and potentially causing fish contamination. Surface water microplastics removing efficiency of the treatment ponds was estimated to be 53%. The study bespeaks about transport of microplastics through wastew- ater canals and their retention in treatment ponds emphasizing sustainability maintenance of natural wastewater treatment systems especially considering microplastics contamination to the aquatic biota of freshwater wetland systems.
 
Date 2022-02-04T09:27:26Z
2022-02-04T09:27:26Z
2021-1-1
 
Type Research Paper
 
Identifier Dhruba Jyoti Sarkar, Soma Das Sarkar, Basanta Kumar Das, Bigan Kumar Sahoo, Akankshya Das, Subir Kumar Nag, Ranjan Kumar Manna, Bijay Kumar Behera, Srikanta Samanta, 2021. Occurrence, fate and removal of microplastics as heavy metal vector in natural wastewater treatment wetland system, Water Res
Not Available
0043-1354
http://krishi.icar.gov.in/jspui/handle/123456789/69477
 
Language English
 
Publisher Not Available