Investigation of relationships between removals of tetracycline and degradation products and physicochemical parameters in municipal wastewater treatment plant

Toraman

International Journal of Pure and Applied Sciences

et al. 2021

Self Cite

In this study, SARS-CoV-2 and gastrointestinal pathogens in a municipal wastewater treatment plant (MWWTP) in Elazığ (Turkey) were investigated. The gastrointestinal pathogen analyzes were performed in influent and effluent of MWWTP, and SARS-CoV-2 analyzes were performed in different treatment units. According to obtained analysis results, gastrointestinal pathogens (bacterial, viral, EPA, and stool parasites) were detected in influent of the MWWTP. Enterohemorragic/verotoxin-producing Ecsherichia coli, all viral agents causing gastroenteritis (except sapoviruses (Sapo)), human parechovirus (HPeV) and adenoviruses from EPA, and Giardia lamblia from stool parasites were detected in effluents of the MWWTP. When bacterial agents causing gastroenteritis, viral agents, EPA, and stool parasites were investigated in the effluent of MWWTP, only 1 agent out of 7, 4 agents out of 6, 2 agents out of 3, and 1 agent out of 3 was detected as positive (+), respectively. SARS-CoV-2 could not be detected in the samples taken from each unit of the wastewater treatment plant. As a result, according to research findings, since pathogens are encountered in wastewater treatment plant effluents, it is necessary to have a disinfection system in the treatment plants and to 500onitör pathogens and SARS-CoV-2 continuously in order to protect environmental and human health.

Section: Study Area and Sample Collectionmentioning

confidence: 99%

Türkiye'de Kentsel Bir Atıksu Arıtma Tesisinde SARS-CoV-2 ve Gastrointestinal Patojenlerin Araştırılması

Toraman

International Journal of Pure and Applied Sciences

et al. 2021

Self Cite

“…In recent years, the residues of antibiotics such as chloramphenicol (Chlor) and tetracycline (Tet) have been found in aquatic ecosystems (Carvalho and Santos, 2016;Sorinolu et al, 2021). Such aquatic resources are contaminated with antibiotic residues from wastewater; given that after uptake, these compounds are not fully assimilated by the body, and a large percentage of ingested antibiotics is eliminated through excreta (Topal et al, 2016). Then, these residues reach wastewater, which is inefficiently treated in treatment plants, finally reaching the aquatic ecosystem, and are found in rivers, lakes, and marshes, among others (Pan et al, 2014;Topal et al, 2014;Baciak et al, 2016;Vilca et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Phytoremediation is a technology based on plants that are capable of accumulating, translocating, and concentrating high amounts of toxic compounds in the aerial parts of their structure (Rahman and Hasegawa, 2011). Among them, the species L. gibba and A. filiculoides have been widely used in studies of the removal of toxic compounds (Baciak et al, 2016;Daud et al, 2018;Balarak et al, 2021), wastewater (Amare et al, 2018), and antibiotic residues with efficient results (Topal et al, 2014, Topal et al, 2016Balarak et al, 2018;Bianchi et al, 2020;Topal et al, 2020;Balarak et al, 2021;Besharati et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, there are several environmental factors that influence the removal of these wastes, such as photodegradation, species biomass (Chattoraj et al, 2014;Naghipour et al, 2016;Pithawala and Jain, 2020), contact time with the compound (Chattoraj et al, 2014;Holanda et al, 2019;Pithawala and Jain, 2020), concentration in the medium (Chattoraj et al, 2014;Holanda et al, 2019), temperature, biodegradation, and adsorption on suspended solids and sediments (Carvalho and Santos, 2016;Topal et al, 2016;Holanda et al, 2019;Bianchi et al, 2020), as well as the phytoremediation process used (phytoextraction, phytostabilization, phytotransformation, volatilization, or rhizofiltration) (Rahman and Hasegawa, 2011). However, considering each factor individually is not enough to degrade these wastes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of the elimination of antibiotics by Lemna gibba and Azolla filiculoides using response surface methodology (RSM)

Maldonado

Quispe

Chacca

et al. 2022

Front. Environ. Sci.

Antibiotic residues have been found in environmental samples, such as water, soil, and even food, and usually come from wastewater, presenting environmental and human health risks. This study aimed to improve the elimination of the antibiotics tetracycline (Tet) and chloramphenicol (Chlor) by modifying three factors: contact time (3–7 days), plant biomass (10–14 g), and antibiotic concentration (5–15 mg/L Tet and 10–20 mg/L Chlor). An approach that optimizes time and resources, response surface methodology (RSM), was applied with a Box–Behnken design (BBD) to two plant species (L. gibba and A. filiculoides), i.e., one experimental design was used for each species. Antibiotic residues in water and plant samples were analyzed by liquid chromatography. The optimal conditions for Tet removal were 6.04 d, 11.4 g, and 13.4 mg/L with Lemna and 6.3 d, 11.9 g, and 14.7 mg/L with Azolla; the optimal conditions for Chlor removal were 7.8 d, 13.6 g, and 10.2 mg/L with Lemna and 4.6 d, 12.3 g, and 8.7 mg/L with Azolla. The results showed that the removal efficiency of antibiotics increased depending on the species used, reaching a maximum of up to 100%. Tet was better removed than Chlor, reaching maximum removal values of 100% and 84% with Azolla and Lemna, respectively. Chlor removal reached 70% and 64% with Azolla and Lemna, respectively. The mean bioconcentration factors (BCFs) of Tet were 2.9% in Lemna and 4.9% in Azolla, and the BCFs for Chlor were 38.1% in Lemna and 37.8% in Azolla. Thus, in general, better results were obtained with Azolla. In summary, the results demonstrate that this design and the selected plants contribute to the removal of antibiotics, presenting a sustainable and recommended alternative for the treatment of wastewater contaminated with antibiotic residues.

“…These compounds possess high aqueous solubility and long environmental half‐life . Antibiotics are difficult to metabolize and absorb by humans and animals; thus, a considerable inestimable portion of antibiotics is annually released into the environment as urine or feces . This situation can lead to the deposition of large quantities of antibiotic residue in water and soil sediments, and this deposition causes serious harm to microorganisms or other non‐target creatures .…”

Section: Introductionmentioning

confidence: 99%

Screen and Study of Tetracycline‐Degrading Bacteria From Activated Sludge and Granular Sludge

Zhao

Liu

et al. 2018

CLEAN Soil Air Water

Wastewater treatment cannot effectively remove tetracycline contained in wastewater, and environmental residues accumulate as a result of this condition. Existing methods use to address the high cost of wastewater treatment and other economic and effective means have been explored. Aerobic granular sludge technology is a newly developed potential biological wastewater treatment method, but the removal of tetracycline through this process is limited. Therefore, the collection of tetracycline‐degrading bacteria as a biological fortifier is vital. In this experiment, 20 and 24 tetracycline‐degrading bacteria are isolated from granular and activated sludge samples, respectively. Highly efficient tetracycline‐degrading strains are selected. The effect of these strains on the degradation rate is investigated under the influence of different factors, namely, time, pH, extra carbon source, inoculum concentration of extra nitrogen source, and substrate concentration. Determination of the nucleotide sequence of the gene encoding for 16S rRNA and physiological and biochemical identification shows that two strains belonged to Achromobacter species.