« Previous AbstractMetabolism by grasshoppers of volatile chemical constituents from Mangifera indica and Solanum paniculatum leaves    Next AbstractCurrent use of pressurised liquid extraction and subcritical water extraction in environmental analysis »

Environ Technol

Title:		Effects of ciprofloxacin on biogas production and microbial community composition in anaerobic digestion of swine wastewater in ASBR type reactor
Author(s):		Ramos J; Richter CP; Silva MA; Singolano GL; Hauagge G; Lorencon E; Junior ILC; Edwiges T; de Arruda PV; Vidal CMS;
Address:		"Civil Engineering Academic Department, The Federal University of Technology - Parana (UTFPR), Toledo, Brazil. Technical Residency in Environmental Engineering and Management, State University of Ponta Grossa (UEPG), Ponta Grossa, Brazil. Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Parana (UTFPR), Toledo, Brazil. Chemistry Academic Department, The Federal University of Technology - Parana (UTFPR), Medianeira, Brazil. Biological and Environmental Sciences, The Federal University of Technology - Parana (UTFPR), Medianeira, Brazil. Department of Environmental Engineering, Midwest State University (UNICENTRO), Irati, Brazil"
Journal Title:		Environ Technol
Year:		2023
Volume:		20230117
Issue:
Page Number:		1 - 13
DOI:		10.1080/09593330.2022.2164744
ISSN/ISBN:		1479-487X (Electronic) 0959-3330 (Linking)
Abstract:		"In swine farming, antibiotics are often used to reduce disease and promote animal growth. Part of these compounds is not absorbed by the swine body, being excreted and later reaching the treatment systems, soil, and nearby waterbodies. This research sought to investigate the influence of adding ciprofloxacin (CIP) on the anaerobic digestion of swine wastewater. For that, a bench-scale anaerobic sequential batch reactor (ASBR) was used, with 5 L of working volume in six different phases, with volumetric organic loading rate (VOLR) and CIP dosage variation. According to the results, the optimal VOLR for the reactor was 0.60 +/- 0.11 gSV L(-1) d(-1), resulting in biogas productivity of 0.51 +/- 0.03 L(biogas) L(-1) d(-1). After initial stability, adding substrate with 0.5 mgCIP L(-1) resulted in an abrupt drop of 82% in the productivity from the 7(th) to 11(th) day of addition, coinciding with volatile acids accumulation. Afterward, the reactor recovered and reached apparent stability, with productivity similar to the previous step without the drug. For 2.5 mgCIP L(-1) in the substrate, the biogas productivity at equilibrium was 11.8% lower than in the phases with the same VOLR and 0.0 and 0.5 mgCIP L(-1). Organic matter removals near 80% were achieved for both dosages. The 16S rRNA metagenomic analyses showed an increase in the relative abundance of most of the phyla found, indicating that the dosages used allowed the acclimatization of microorganisms and possibly the compound biodegradation"
Keywords:		Methane antibiotic resistance drug micropollutant sequential batch;
Notes:		"PublisherRamos, Jose Gustavo Venancio da Silva Richter, Camila Palacio Silva, Maria Alice Singolano, Giordana Longo Hauagge, Gabriel Lorencon, Eduarda Junior, Ismael Laurindo Costa Edwiges, Thiago de Arruda, Priscila Vaz Vidal, Carlos Magno de Sousa eng England 2023/01/10 Environ Technol. 2023 Jan 17:1-13. doi: 10.1080/09593330.2022.2164744"