School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Bioresour Technol. 2022 Jan;344(Pt B):126228. doi: 10.1016/j.biortech.2021.126228. Epub 2021 Oct 31.
The remediation of multiple pollutants in water, for instance, nitrate, heavy metals, and antibiotics is urgent and necessary for the global water resources protection. Herein, a modified loofah bioreactor was designed for simultaneous denitrification, manganese (Mn) oxidation, and tetracycline (TC) removal. The maximum removal efficiencies of NO-N (91.97%), Mn(II) (71.25%), and TC (57.39%) were achieved at a hydraulic retention time (HRT) of 9 h, Mn(II) concentration of 20 mg L, and TC concentration of 1 mg L. SEM and XRD were carried out to characterize the bioprecipitation in the operation of bioreactor. TC addition affected the gaseous denitrification products, dissolved organic matter, as well as reduced the OTU in the bioreactor. The Zoogloea were regarded as the dominant species in the microbial community and played an essential role in the operation of bioreactor. Metagenomic analysis proved the great potential for denitrification, manganese oxidation, and antibiotic removal of loofah bioreactor.
水体重金属和抗生素等多种污染物的修复对于全球水资源保护而言十分紧迫且必要。本文设计了一种改良的丝瓜络生物反应器，用于同时进行反硝化、锰（Mn）氧化和四环素（TC）去除。在水力停留时间（HRT）为 9 h、Mn（II）浓度为 20 mg/L 和 TC 浓度为 1 mg/L 的条件下，NO-N（91.97%）、Mn（II）（71.25%）和 TC（57.39%）的去除效率达到最大值。SEM 和 XRD 用于对生物反应器运行中的生物沉淀进行表征。TC 的添加会影响气态反硝化产物和溶解有机物，并降低生物反应器中的 OTU。动胶菌被认为是微生物群落中的优势物种，在生物反应器的运行中发挥着重要作用。宏基因组分析证明了丝瓜络生物反应器在反硝化、锰氧化和抗生素去除方面具有巨大的潜力。
