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Preparation, Performances, and Mechanisms of Microbial Flocculants for Wastewater Treatment

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  • Huiru Li

    (College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China)

  • Shaohua Wu

    (College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
    Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China)

  • Cheng Du

    (Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China)

  • Yuanyuan Zhong

    (Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China)

  • Chunping Yang

    (College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
    Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
    Hunan Provincial Environmental Protection Engineering Center for Organic Pollution Control of Urban Water and Wastewater, Changsha 410001, China)

Abstract

In recent years, close attention has been paid to microbial flocculants because of their advantages, including safety to humans, environmental friendliness, and acceptable removal performances. In this review, the preparation methods of microbial flocculants were first reviewed. Then, the performances of bioflocculants in the removal of suspended solids, heavy metals, and other organic pollutants from various types of wastewater were described and commented, and the removal mechanisms, including adsorption bridging, charge neutralization, chemical reactions, and charge neutrality, were also discussed. The future research needs on microbial flocculants were also proposed. This review would lead to a better understanding of current status, challenges, and corresponding strategies on microbial flocculants and bioflocculation in wastewater treatment.

Suggested Citation

  • Huiru Li & Shaohua Wu & Cheng Du & Yuanyuan Zhong & Chunping Yang, 2020. "Preparation, Performances, and Mechanisms of Microbial Flocculants for Wastewater Treatment," IJERPH, MDPI, vol. 17(4), pages 1-20, February.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:4:p:1360-:d:322890
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    References listed on IDEAS

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    1. Mengjie Wu & Hongyu Liu & Chunping Yang, 2019. "Effects of Pretreatment Methods of Wheat Straw on Adsorption of Cd(II) from Waterlogged Paddy Soil," IJERPH, MDPI, vol. 16(2), pages 1-21, January.
    2. Mayowa Oladele Agunbiade & Carolina Pohl & Esta Van Heerden & Oluwaseun Oyekola & Anofi Ashafa, 2019. "Evaluation of Fresh Water Actinomycete Bioflocculant and Its Biotechnological Applications in Wastewaters Treatment and Removal of Heavy Metals," IJERPH, MDPI, vol. 16(18), pages 1-15, September.
    3. Zhang, Chao & Wen, Zongguo & Chen, Jining, 2009. "An integrated model for technology forecasting to reduce pollutant emission in China's pulp industry," Resources, Conservation & Recycling, Elsevier, vol. 54(1), pages 62-72.
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    Cited by:

    1. Mengjia Tian & Feng Liu & Jiawen Guo & Wei Li & Mao Zhang & Xiang Li, 2022. "Effect of Different Acid and Base Potassium Ferrate Pretreatment on Organic Acid Recovery by Anaerobic Digestion of Sludge," IJERPH, MDPI, vol. 19(22), pages 1-15, November.
    2. Huiru Li & Shaohua Wu & Chunping Yang, 2020. "Performance and Biomass Characteristics of SB R s Treating High-Salinity Wastewater at Presence of Anionic Surfactants," IJERPH, MDPI, vol. 17(8), pages 1-12, April.

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