Effect of GR24 concentrations on tetracycline and nutrient removal from biogas slurry by different microalgae-based technologies. (February 2023)

• Record Type: Journal Article
• Authors: Wei, Jing; Wang, Zhengfang; Zhao, Chunzhi; Sun, Shiqing; Xu, Jie; Zhao, Yongjun
• Is Part Of: Bioresource technology. Volume 369(2023)
• Publication Date: 2023-02
• Subjects: Co-cultivation -- Endophytic bacteria -- Growth rate -- Photosynthetic performance -- Removal efficiency; 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.2022.128400
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Algal-bacterial-fungal consortium was preferred. GR24 concentration of 10 −9 M facilitated the growth of consortia. Photosynthetic performance had influences on TC and nutrients removals. The highest removal rate of TC exceeded 83 %. Abstract: A biogas slurry composed of carbon, nitrogen, phosphorus, and antibiotics was generated. Investigations into the nutrient and tetracycline removal performance of four microalgae-based contaminant removal technologies, including Chlorella vulgaris, C. vulgaris co-cultured with endophytic bacteria, C. vulgaris co-cultured with Ganoderma lucidum, and C. vulgaris co-cultured with G. lucidum and endophytic bacteria, were conducted. The algal-bacterial-fungal consortium with 10 −9 M strigolactone (GR24) yielded the maximum growth rate and average daily yield for algae at 0.325 ± 0.03 d −1 and 0.192 ± 0.02 g L −1 d −1, respectively. The highest nutrient/ tetracycline removal efficiencies were 83.28 ± 7.95 % for chemical oxygen demand (COD), 82.62 ± 7.97 % for total nitrogen (TN), 85.15 ± 8.26 % for total phosphorus (TP) and 83.92 ± 7.65 % for tetracycline. Adding an algal-bacterial-fungal consortium with an optimal synthetic analog GR24 concentration is seemingly an encouraging strategy for enhancing pollutant removal by algae, possibly overcoming the challenges of eutrophication and antibiotic pollution.