Effects of solids retention time on the fate of tetracycline resistance in SBRs for the treatment of carcass leachate

Sotto, Ryan De; Medriano, Carl Angelo; Salcedo, Dennis Espineli; Lee, H.; Cho, Y.; Kim, Sungpyo

doi:10.1016/j.jenvman.2016.06.046

Cited by 4 publications

(3 citation statements)

References 33 publications

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“…Fortunately, many previous studies have reported that some current treatment plant designs may remove ARGs and ARB, at least partially, and different processes have their own characteristics for different types of ARGs. For example, studies have found that solids retention time may be an important factor to the treatment removal efficiency of ARGs in activated sludge processes (De Sotto et al., ; Neyestani, Dickenson, McLain, Obergh, et al., ; Neyestani, Dickenson, McLain, Robleto, et al., ). Characteristics of different treatment processes are discussed below in detail.…”

Section: Antibiotic Resistance Genes In Water Resource Recovery Facilmentioning

confidence: 99%

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Fate of antibiotic resistance genes and antibiotic‐resistant bacteria in water resource recovery facilities

Jay

Stenstrom

2019

Water Environment Research

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Many important diseases are showing resistance to commonly used antibiotics, and the resistance is potentially caused by widespread use of antibiotics for maintaining human health and improving food production. Antibiotic resistance genes (ARGs) and antibiotic-resistant bacteria (ARB) are associated with this increase, and their fate in water resource recovery facilities is an important, emerging area of research. This literature review summarizes current findings of worldwide research on the fate of ARB and ARGs in various types of treatment plants. Twenty-five published studies were reviewed which contained 215 observations in activated sludge, membrane bioreactors, anaerobic digestion, constructed wetlands, coagulation-filtration, and three types of disinfection. We found 70% decreased observations, 18% increased observations, and 12% unchanged observations of all observations in all treatment processes. Resistance genes to tetracycline were most often observed, but more studies are needed in other antibiotic resistance genes. The causes for increased abundance of ARGs and ARB are not well understood, and further studies are warranted.

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Section: Antibiotic Resistance Genes In Water Resource Recovery Facilmentioning

confidence: 99%

“…De Sotto et al. () found similar results in laboratory‐scale SBRs for the treatment of carcass leachate on the fate of tetracycline resistance. Neyestani, Dickenson, McLain, Robleto, et al.…”

Section: Args In Biological Treatmentmentioning

confidence: 99%

Fate of antibiotic resistance genes and antibiotic‐resistant bacteria in water resource recovery facilities

Jay

Stenstrom

2019

Water Environment Research

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“…Traditionally, a combination of physical, chemical, and biological processes has been widely used in wastewater treatment plants to remove pollutants (Li et al 2017), such as BOD 5 , COD Cr , SS, TP, TN, etc. and ensure that the residual pollutants in the effluent conform to the legal requirements (Everage et al 2014;Jaranowska et al 2013), so the reduction of ARGs was not considered during the treatment process (De Sotto et al 2016). WWTPs have been considered a reservoir of ARGs because a high abundance and diversity of ARGs were detected in WWTPs, such as quinolone resistance genes qnrS, qnrB, and acc(6')-Ib-cr, AmpC genes, integrons intI1 and intI2 (Su et al 2014;Kumar et al 2020), tet genes tetM tetC tetK and tetA/P (Laht et al 2014;Zhang, Zhang 2011), which might be released into the drinking water from the effluent and pose a potential risk to human health.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the elimination effectiveness of tetracycline and AmpC β-lactamase resistance genes in a municipal wastewater treatment plant using four parallel processes

et al. 2020

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Municipal wastewater treatment plants (mWWTPs), considered reservoirs of antibiotic resistance genes (ARGs), are selected to compare the contributions of technology and process to ARG removal. Fifteen ARGs (tetA, tetB, tetC, tetE, tetG, tetL, tetM, tetO, tetQ, tetS, tetX, MOX, CIT, EBC, and FOX) and two integron genes (intI1, intI2) were tracked and detected in wastewater samples from a large-scale mWWTP with four parallel processes, including three biological technologies of AAO (anaerobic-anoxic-oxic), AB (adsorption-biodegradation), and UNITANK, two different disinfection technologies, and two primary sedimentation steps. The results showed that ARGs were widely detected, among which tetA and tetM had the highest detection rate at 100%. AAO was the most effective process in removing ARGs, followed by the AB and UNITANK processes, where the separation step was critical: 37.5% AmpC β-lactamase genes were reduced by the secondary clarifier. UV disinfection was more efficient than chlorination disinfection by 47.0% in ARG removal. Both disinfection and primary sedimentation processes could effectively remove integrons, and the swirling flow grit chamber was a more effective primary settling facility in total ARG removal than the aerated grit chamber. The tet genes and AmpC β-lactamase genes were significantly correlated with the water quality indexes of BOD 5 , COD Cr , SS, TP, TOC, pH and NH 4 +-N (p < 0.05). In addition, the correlation between efflux pump genes and AmpC β-lactamase genes was strongly significant (r 2 = 0.717, p < 0.01). This study provides a more powerful guide for selecting and designing treatment processes in mWWTPs with additional consideration of ARG removal.

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Antibiotic resistance dissemination in wastewater treatment plants: a challenge for the reuse of treated wastewater in agriculture

Leiva

Piña

Vidal

2021

Rev Environ Sci Biotechnol

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The reuse of treated wastewater (TWW) has been considered a suitable alternative for agriculture and for achieving water security and management. However, this practice may contribute to the dissemination of antibiotic resistance genes (ARGs) into the environment, a matter of global concern. The aim of this study is to discuss the reuse of TWW in agriculture under the perspective of the risks associated to ARGs dissemination. An exhaustive bibliographic research was conducted for determining the capacity of reducing ARG loads for different wastewater treatment technologies (conventional, non-conventional and advanced technologies). Moreover, the distribution of ARG elements in crops irrigated with TWW was also reviewed for discussing the potential health risks associated to the TWW reuse. Reduction of ARG loads in conventional, non-conventional and advanced treatments fluctuated between 1.1 and 4.1, 0.1-2.1 and 0.1-9.5 log units, respectively. These variable ranges indicate that operational parameters, plant design, and water quality are fundamental parameters determining their performance and their capacity to reduce ARG dissemination. In the case of ARG distribution in crops and soil irrigated by TWW, higher abundances were observed in soil than edible parts of crops with ranges between (-0.7)-6.0 log copies/g of soil and (-0.9)-5.6 log copies/g of soil, respectively. The occurrence of ARGs in crops may represent a relevant human exposure to ARG-harbouring bacteria and therefore, a potential human health risk that requires the establishment of safe procedures and legislation for assuring a safe reuse of TWW.

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Effects of solids retention time on the fate of tetracycline resistance in SBRs for the treatment of carcass leachate

Cited by 4 publications

References 33 publications

Fate of antibiotic resistance genes and antibiotic‐resistant bacteria in water resource recovery facilities

Fate of antibiotic resistance genes and antibiotic‐resistant bacteria in water resource recovery facilities

Comparison of the elimination effectiveness of tetracycline and AmpC β-lactamase resistance genes in a municipal wastewater treatment plant using four parallel processes

Antibiotic resistance dissemination in wastewater treatment plants: a challenge for the reuse of treated wastewater in agriculture

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