Composition and dynamics of bacterial communities during flotation in a coal preparation plant. (20th January 2023)

• Record Type: Journal Article
• Authors: Wang, Xizhuo; Meng, Delong; Li, Jianbo; Lu, Zijing; Zhang, Zijia; Zhang, Cui; Song, Shaoxian; Peng, Yonghe; Xia, Ling
• Is Part Of: Journal of cleaner production. Volume 385(2023)
• Publication Date: 2023-01-20
• Subjects: Coal flotation -- Indigenous microorganism -- Reagent -- Bacterial community; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2022.135691
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: Numerous studies of biological reagents in the past have confirmed the great influence of bacteria on flotation. In this study, high-throughput sequencing was used to characterize the composition and dynamics of bacterial communities during flotation in a coal preparation plant. The influence of pulp bacteria on flotation efficiency of coal was further investigated. The results showed that the coal pulp harbored a diverse bacterial community and the bacteria mostly originated from raw coal. The dominantly indigenous bacteria were Proteobacteria, Acidobacteria and Nitrososphaera . Spearman correlation analysis revealed a significant association between species and ash contents, implying an adverse effect on flotation. The nitrogen-containing reagents were identified as major factors altering bacterial community structure based on redundancy analysis and mantel test. This is the first study focusing on bacterial communities in coal flotation systems, which not only contributes to understanding the bacterial diversity of the coal flotation environment, but also provides biological information and methodological basis for the optimization of coal flotation systems. Graphical abstract: Image 1 Highlights: Explored the dynamic of indigenous bacteria community in a coal preparation plant. Eight genera of bacteria were confirmed to be significantly related with ash content. Bacteria increased the ash content in coal products. Reagents changed the abundance of bacteria to adjust the community structure.