This research investigated the effects of ciprofloxacin (CIP) (0.5, 5, and 20 mg/L) on SBR systems under different carbon source conditions. Microbial community abundance and structure were determined by quantitative PCR and high-throughput sequencing, respectively. The biodegradation production of CIP and possible degradation mechanism were also studied. Results showed that CIP had adverse effects on the nutrient removal from wastewater. Compared with sodium acetate, glucose could be more effectively used by microorganisms, thus eliminating the negative effects of CIP. Glucose stimulated the microbial abundance and increased the removal rate of CIP by 18%-24%. The mechanism research indicated that Proteobacteria and Acidobacteria had a high tolerance for CIP. With sodium acetate as a carbon source, the abundance of nitrite-oxidizing bacterial communities decreased under CIP, resulting in the accumulation of nitrite and nitrate. Rhodanobacter and Microbacterium played a major role in nitrification and denitrification when using sodium acetate and glucose as carbon sources. Dyella and Microbacterium played positive roles in the degradation process of CIP and eliminated the negative effect of CIP on SBR, which was consistent with the improved removal efficiency of pollutants.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jes.2021.03.037 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
FeO@HA-Cu(OAc) nanocomposite as a nanomagnetic water-compatible catalyst for efficient synthesis of 1,2,3-triazoles in water.
Sci Rep
January 2025
Department of Chemistry, Yazd University, Yazd, Iran.
A new humic acid-based nanomagnetic copper(II) composite was prepared and used as an eco-friendly recoverable catalyst for synthesizing 1,4-disubstituted 1,2,3-triazoles. The synthesis was done via the three-component click reaction of alkyl halide, sodium azide, and terminal alkyne with good to excellent yield. A simple magnetic copper acetate composite, FeO@HA-Cu(OAc), was prepared using humic acid and characterized by SEM, TEM, XRD, EDX, EDS-mapping, VSM, TGA, AAS, and FT-IR.
View Article and Find Full Text PDFPolymeric hydrogel integrated paper-based potentiometric ion-sensing device for the determination of sodium ions in human urine.
Analyst
January 2025
Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan.
A paper-based potentiometric sensor integrated with a polymeric hydrogel has been developed for sodium ion (Na) determination in human urine. The construction of an all-solid-state ion selective electrode (s-ISE) and an all-solid-state reference electrode (s-RE) on a photo paper substrate was achieved using an inkjet printing method. For s-ISE fabrication, carbon nanotubes (CNTs) and gold nanoparticles (AuNPs) were printed on the substrate as a nanocomposite solid contact.
View Article and Find Full Text PDFIncreased matrix metalloproteinase-1 expression by coexposure to UVA and cigarette sidestream smoke and contribution of histone acetylation.
Genes Environ
January 2025
Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Yada 52- 1, Suruga-ku, Shizuoka, 422-8526, Japan.
Background: Skin is exposed to various environmental factors throughout life, and some of these factors are known to contribute to skin aging. Long-term solar UV exposure is a well-known cause of skin aging, as is cigarette smoke, which contains a number of chemicals. In this study, combined effect of UVA and cigarette sidestream smoke (CSS) on matrix metalloproteinase-1 (MMP-1) induction was investigated.
View Article and Find Full Text PDFCharacterizing the Contaminant-Adhesion of a Dibenzofuran Degrader sp.
Microorganisms
January 2025
Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China.
The adhesion between dibenzofuran (DF) and degrading bacteria is the first step of DF biodegradation and affects the efficient degradation of DF. However, their efficient adhesion mechanism at the molecular level remains unclear. Therefore, this study first examined the adhesive behaviors and molecular mechanisms of sp.
View Article and Find Full Text PDFLactoferrin-functionalized PEGylation liposomes loaded with norcantharidin acid for targeted therapy of hepatocellular carcinoma.
Int J Pharm
January 2025
School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110116, China.
Norcantharidin (NCTD), an antitumor agent with an increased leukocyte function, has been used for the treatment of hepatocellular carcinoma (HCC) in clinical. However, the clinical application of NCTD is limited due to its inadequate hydrophilicity and lipophilicity, short half-life (t), as well as adverse effects such as vascular irritation, cardiotoxicity, and nephrotoxicity. Herein, a lactoferrin (Lf) and DSPE-mPEG functionalized liposomes loaded with norcantharidic acid (NCA), an active metabolite of NCTD, was constructed for the targeted therapy of HCC.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!