The impact of powdered activated carbon types on membrane anti-fouling mechanism in membrane bioreactors

Feng, Huajun; Chen, Long; Ying, Xianbin; Ding, Yangcheng

doi:10.1007/s00253-022-12186-5

Appl Microbiol Biotechnol

2022

DOI: 10.1007/s00253-022-12186-5

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The impact of powdered activated carbon types on membrane anti-fouling mechanism in membrane bioreactors

Huajun Feng

Long Chen

Xianbin Ying

et al.

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2024

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Microalgae cultivation trials in a membrane bioreactor operated in heterotrophic, mixotrophic, and phototrophic modes using ammonium-rich wastewater: The study of fouling

Shamskilani,

Masojídek,

Abbasiniasar

et al. 2024

Water Science &Amp; Technology

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In this work, microalgae cultivation trials were carried out in a membrane bioreactor to investigate fouling when the cultures of Chlorellavulgaris were grown under mixotrophic, heterotrophic, and phototrophic cultivation regimes. The Chlorella cultures were cultivated in wastewater as a source of nutrients that contained a high concentration of ammonium. In mixotrophic cultivation trials, the results showed that the elevated contents of carbohydrates in the soluble microbial product and proteins in extracellular polymeric substances probably initiated membrane fouling. In this case, the highest protein content was also found in extracellular polymeric substances due to the high nitrogen removal rate. Consequently, transmembrane pressure significantly increased compared to the phototrophic and heterotrophic regimes. The data indicated that cake resistance was the main cause of fouling in all cultivations. Higher protein content in the cake layer made the membrane surface more hydrophobic, while carbohydrates had the opposite effect. Compared to a mixotrophic culture, a phototrophic culture had a larger cell size and higher hydrophobicity, leading to less membrane fouling. Based on our previous data, the highest ammonia removal rate was reached in the mixotrophic cultures; nevertheless, membrane fouling appeared to be the fundamental problem.

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Microalgae cultivation trials in a membrane bioreactor operated in heterotrophic, mixotrophic, and phototrophic modes using ammonium-rich wastewater: The study of fouling

Shamskilani,

Masojídek,

Abbasiniasar

et al. 2024

Water Science &Amp; Technology

View full text Add to dashboard Cite

show abstract

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The impact of powdered activated carbon types on membrane anti-fouling mechanism in membrane bioreactors

Cited by 1 publication

References 25 publications

Microalgae cultivation trials in a membrane bioreactor operated in heterotrophic, mixotrophic, and phototrophic modes using ammonium-rich wastewater: The study of fouling

Microalgae cultivation trials in a membrane bioreactor operated in heterotrophic, mixotrophic, and phototrophic modes using ammonium-rich wastewater: The study of fouling

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