Reduction of antibiotic resistance genes in municipal wastewater effluent by advanced oxidation processes

Zhang, Yingying; Zhuang, Yao; Geng, Jinju; Ren, Hongqiang; Xu, Ke; Ding, Lili

doi:10.1016/j.scitotenv.2016.01.078

Cited by 176 publications

(51 citation statements)

References 60 publications

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“…Similar excellentr esults were obtained in the abatement of antibiotic-resistant genes often hosted in bacteria, such as Escherichiac oli,b yc ombiningU Vi rradiation with Fentono xidation (Fe 2 + /H 2 O 2 ), or with H 2 O 2 alone (Figure 6), with the distinct advantage of ad rastic reduction of the respective doses and ad iminished sensitivity to pH. [43] Another target-specific, effective H 2 O 2 -based water remediation process consists of the addition (at about d = 20 ppm concentration)o fw astewaterw ith the TAML (tetraamidomacrocyclic ligand) family of iron complexes, which mimic the action of peroxidase enzymes to boost the oxidative degradation ability of H 2 O 2 alone. [44] Successful halvingo ft he concentration of am icropollutant endocrine disrupting synthetic estrogen from municipal wastewater was recently demonstrated, [45] with tests suggesting that 1kgo ft he catalyst would be sufficient to treat 20 000-30 000 tonnes of water to eliminatea ne strogen that leads to the collapse of fish populations in open water by feminizing male fish,e ven at concentrationsi np arts per trillion.…”

Section: Emerging Usessupporting

confidence: 59%

Hydrogen Peroxide: A Key Chemical for Today's Sustainable Development

et al. 2016

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The global utilization of hydrogen peroxide, a green oxidant that decomposes in water and oxygen, has gone from 0.5 million tonnes per year three decades ago to 4.5 million tonnes per year in 2014, and is still climbing. With the aim of expanding the utilization of this eminent green chemical across different industrial and civil sectors, the production and use of hydrogen peroxide as a green industrial oxidant is reviewed herein to provide an overview of the explosive growth of its industrial use over the last three decades and of the state of the art in its industrial manufacture, with important details of what determines the viability of the direct production from oxygen and hydrogen compared with the traditional auto-oxidation process.

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Section: Emerging Usessupporting

confidence: 59%

Hydrogen Peroxide: A Key Chemical for Today's Sustainable Development

et al. 2016

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“…A sample size calculation to determine the number of sampling locations per river was conducted assuming data would be analyzed using a mixed effects model to account for repeated measures. Assuming normality, with 80% power, a confidence level of 95%, an effect size of a 3 log difference in ARG load between two groups (downstream and upstream), a SD of 2 log ARG load (inferred from published literature with similar study design; Munir et al, 2011; Burch et al, 2013; Chen and Zhang, 2013; Guo et al, 2013; Zhuang et al, 2015; Zhang et al, 2016b), and an intraclass correlation coefficient (ICC) for within‐river sites of 0.5, the minimum number of sites to sample was determined to be seven per river (calculated using PASS 13, NCSS; Vierron and Giraudeau, 2007). Field sites were not selected randomly but rather by convenience to target a total distance of no more than 2 km total for each farm and to have safe access to the river.…”

Section: Methodsmentioning

confidence: 99%

Antibiotic Resistance Genes in Freshwater Trout Farms in a Watershed in Chile

et al. 2019

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Point sources such as wastewater treatment plants, terrestrial agriculture, and aquaculture may release antibiotic residues, antibiotic resistant bacteria, and antibiotic resistance genes (ARGs) into aquatic ecosystems. However, there is a lack of quantitative studies attributing environmental ARG abundance to specific sources. The goal of this study was to evaluate the role of freshwater trout farms in the release and dissemination of ARGs into the environment. Sediment samples upstream and downstream from five rainbow trout farms were collected over time in southern Chile. A microfluidic quantitative polymerase chain reaction approach was used to quantify an ARG array covering different mechanisms of resistance, and data were analyzed using principal component analysis (PCA) and linear mixed regression models. Surveys were also conducted to obtain information about management practices, including antibiotic use, at the farms. Florfenicol and oxytetracycline were used at these farms, although at different rates. A total of 93 samples were analyzed. In the PCA, strB, sul1, sul2, qacG, tet(A), tet(B), tet(C), tet(W), and floR grouped together. A statistically significant increase in abundance of qacG, strB, sul1, and several tet genes was found downstream from the farms compared with upstream sites, and retention ponds had the highest ARG abundance at each site. Antibiotic resistance gene levels returned to baseline at an average distance of 132.7 m downstream from the farms. Although results from this study indicate an influence of trout farms on the presence of ARGs in the immediate environment, the extent of their contribution to ARG dissemination is unknown and deserves further investigation. Core Ideas Point sources contribute to antimicrobial resistance (AMR) in the environment. Antibiotic resistance genes (ARG) were quantified in river sediment samples. Freshwater trout farms in southern Chile increased ARG abundance in the watershed. The extent of the contribution of the trout farms on ARG dissemination is uncertain. Epidemiological methods are needed to attribute environmental AMR to specific point sources.

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“…wastewater, has to be effectively disinfected Zhang et al, 2016), as well as effective clinical countermeasures have to be undertaken to treat patients. Upstream, medical prescription and consequent release of pharmaceutical antibiotics should be kept as low as possible.…”

Section: Healthier Diets Mattermentioning

confidence: 99%

Innovative beer-brewing of typical, old and healthy wheat varieties to boost their spreading

Albanese

Ciriminna

Meneguzzo

et al. 2017

Preprint

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Certain typical old wheat varieties grown in the Mediterranean countries and elsewhere are renowned for their nutritional value due to higher concentration of polyphenols, especially flavonoids, as well as of important minerals, than modern varieties. However, the respective economical sustainability is constrained by reduced yield, increasing costs and stagnating or decreasing market prices. Moreover, under certain conditions, connected with the respective scale and local market volume, low-input, organically grown cereals can lead to lower environmental footprint. Brewing with a portion of such old grains can effectively boost their spreading, conditioned on its ability to supply a significant additional net income to farmers. Beer has become the worldwide most consumed alcoholic beverage and, although its market is dominated by few global players and standardized products, craft breweries have quickly spread out in most countries. Nevertheless, a scale issue has arisen about the economic sustainability of microbreweries, mainly due to high initial capital investment, energy costs, scale, and sometimes taxation. It is shown how breakthrough, cheaper, more efficient and profitable microbreweries can help solving the sustainability issues affecting old wheat varieties, thus boosting the respective spreading, lowering the environmental footprint of the cereal sector and contributing to improve the public health.

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Reduction of antibiotic resistance genes in municipal wastewater effluent by advanced oxidation processes

Cited by 176 publications

References 60 publications

Hydrogen Peroxide: A Key Chemical for Today's Sustainable Development

Hydrogen Peroxide: A Key Chemical for Today's Sustainable Development

Antibiotic Resistance Genes in Freshwater Trout Farms in a Watershed in Chile

Innovative beer-brewing of typical, old and healthy wheat varieties to boost their spreading

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