Integrating acidogenic fermentation and microalgae cultivation of bacterial-algal coupling system for mariculture wastewater treatment. (January 2021)

• Record Type: Journal Article
• Authors: You, Xuting; Zhang, Zengshuai; Guo, Liang; Liao, Qianru; Wang, Yi; Zhao, Yangguo; Jin, Chunji; Gao, Mengchun; She, Zonglian; Wang, Guangce
• Is Part Of: Bioresource technology. Volume 320: Part A(2021)
• Publication Date: 2021-01
• Subjects: Acidogenic fermentation -- Mariculture wastewater -- Bacterial-Algal Coupling System -- Mixotrophy microalgae -- Enzyme activity; 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.2020.124335
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Bacterial-Algal Coupling System was used for mariculture wastewater (MW) treatment. C. vulgaris displayed optimal growth in the 10% diluted AF effluents. Acetic acid and propionic acid were utilized prior to butyric acid and valeric acid. Photosynthesis and heterotrophism have synergy on energy and carbon metabolism. Abstract: In this study, Bacterial-Algal Coupling System, a method integrated acidogenic fermentation (AF) and microalgae cultivation, was applied to the mariculture wastewater (MW) treatment. The MW was acidogenic fermented at different initial pH (4.0–10.0), and different dilution rate (5%-20%) of AF effluent was used for Chlorella vulgaris cultivation. The results showed that the maximum biomass production (5.6 g/L) of microalgae was obtained with 10% AF effluent. Ammonium, phosphate and volatile fatty acids could be metabolized by microalgae. More specifically, acetic acid and propionic acid were utilized prior to butyric acid and valeric acid. To better understand the synergy of heterotrophic metabolism and photosynthesis, the activities of Rubisco and citrate synthase were revealed to provide additional insight for nutrients recovery from MW by mixotrophic cultivation of microalgae.