Distribution of Microplastics and Their Effect on the Microalgae Population in the Inshore Waters of the Bay of Bengal

Ulaganathan, Shamala; Appavoo, Merline Sheela; Gr,

doi:10.1007/s41208-023-00567-0

Cited by 2 publications

(1 citation statement)

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“…Additionally, the ratio of Chl-a/Chl-b increased. In the Bay of Bengal in India, it was found that the higher the fiber content in the water, the higher the Chl content, but this did not mean that the high fiber area of the algae photosynthetic activity increased [34]. In summary, although the content of Chl increased in wastewater with high concentrations of nPET, and the general photosynthetic efficiency of MBGS may still be reduced.…”

Section: Granule Size and Morphologymentioning

confidence: 92%

Impact of Nano–Sized Polyethylene Terephthalate on Microalgal–Bacterial Granular Sludge in Non–Aerated Wastewater Treatment

Du,

Xiong,

Zhu

et al. 2023

Water

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The widely used plastics in our daily lives have resulted in ubiquitous microplastics and nanoplastics in wastewater, such as polyethylene terephthalate (PET). As an emerging green process for wastewater treatment and resource recovery, microalgal–bacterial granular sludge (MBGS) aligns with the concept of the circular economy. However, it is unclear whether the tiny PET can affect the MBGS process. Thus, this study investigated the impact of nano–sized PET (nPET) on the MBGS process. The results showed that 10 to 30 mg/L nPET had no obvious impact on pollutant removal as compared with the control group. However, the performance of the MBGS with the addition of 50 mg/L nPET became worse after 15 days. Scanning electron microscopy revealed that the MBGS adsorbed nPET by generating extracellular polymeric substances. Further microbial analyses showed that the algal abundance in prokaryotes slowly declined with increasing concentrations of nPET, while the reduced energy storage and electron transfer in eukaryotes might lead to an inferior performance at 50 mg/L nPET. Overall, the MBGS was demonstrated to exhibit good adaptability to nPET–containing wastewater, which showed the potential to be applied for the treatment of municipal wastewater containing nanoplastics.

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Section: Granule Size and Morphologymentioning

confidence: 92%