Efficient phosphorus removal by a novel halotolerant fungus Aureobasidium sp. MSP8 and the application potential in saline industrial wastewater treatment. (August 2021)

• Record Type: Journal Article
• Authors: Zeng, Xiaoying; Huang, Jinhui Jeanne; Hua, Binbin
• Is Part Of: Bioresource technology. Volume 334(2021)
• Publication Date: 2021-08
• Subjects: High salinity resistance -- Aureobasidium sp. -- Phosphorus removal -- Saline wastewater treatment; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2021.125237
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: A phosphorus-removal fungus MSP8 was isolated and identified as Aureobasidium sp. MSP8 has a salinity resistance with range of 0–17%. 77.2% phosphorus removal can be achieved by MSP8 at the optimal salinity of 5%. Phosphorus removal pathway of MSP8 was preliminarily revealed. MSP8 showed good potential for removing phosphorus in actual high-salt wastewater. Abstract: Efficient halotolerant phosphorus accumulation microorganisms are of great significance for the treatment of high-salt wastewater. In this study, a halotolerant fungus strain named MSP8 was isolated and identified as Aureobasidium sp. Salinity resistance results showed that strain MSP8 can resist the salinity from 0% to 17%, and 77.2% phosphorus removal was achieved at the optimal salinity of 5%. The strain also showed wide environmental adaptability (pH of 3–7; temperature of 20–30 °C). Batch tests and scanning electron microscope equipped with an energy dispersive spectrometer (SEM-EDS) characterization results verified the key role of extracellular polymeric substance (EPS) secreted by MSP8 in phosphorus removal. The actual brewery and chemical wastewater treatments exhibited that above 53.5% of phosphorus can be removed by MSP8. The excellent adaptation of MSP8 made it a potential candidate for phosphorus removal especially in saline wastewater treatment.