title: Understanding the performance of microbial community induced by ZnO nanoparticles in enhanced biological phosphorus removal system and its recoverability.
abstract: In this study, the impacts of ZnO Nanoparticles (NPs) on the microbial community in enhanced biological phosphorus removal (EBPR) system and its recoverability were investigated. High-throughput sequencing was applied to study the microbial community shift. Results show that the species richness in the EBPR system was reduced under the condition of ZnO NPs with high concentration (above 6mg/L). Evolution analysis suggests that higher concentration ZnO NPs induced more microbial community shift. According to the analysis on genus level, Competibacter was more impressionable than Accumulibacter after exposure to 2mg/L ZnO NPs. Nonetheless, this phenomenon could not be found as the concentration of ZnO NPs got higher (above 6mg/L). Accumulibacter could reach to the initial level after recover for 20days, whereas Competibacter could not recover even when the concentration of ZnO NPs was only 2mg/L. Interestingly, although the phosphorus removal (P-removal) process was re-achieved, the microbial community in reactors was irreversible.
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Zhetai
authors.initials: Z
authors.lastname: Hu
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Xuanyu
authors.initials: X
authors.lastname: Lu
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China. Electronic address: pdsun@126.com.
authors.forename: Peide
authors.initials: P
authors.lastname: Sun
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; GL Environment Inc, Hamilton, Canada.
authors.forename: Zhirong
authors.initials: Z
authors.lastname: Hu
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Ruyi
authors.initials: R
authors.lastname: Wang
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Chengke
authors.initials: C
authors.lastname: Lou
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Jingyi
authors.initials: J
authors.lastname: Han
mesh_terms: D001419:Bacteria / Q000187:drug effects*; D019149:Bioreactors / Q000382:microbiology*; D053768:Metal Nanoparticles / Q000737:chemistry*; D059013:Microbial Consortia / Q000187:drug effects*; D010758:Phosphorus / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism; D015034:Zinc Oxide / Q000737:chemistry / Q000494:pharmacology
chemical_list: D010758:Phosphorus; D015034:Zinc Oxide
keywords: Enhanced biological phosphorus removal; Microbial community shift; Recoverability; ZnO nanoparticles