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Gao X, Meng Q, Fang J, Shan S, Lin D, Wang D. Effects of particle size and pyrolytic temperature of biochar on the transformation behavior of antibiotic resistance genes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 877:162923. [PMID: 36933735 DOI: 10.1016/j.scitotenv.2023.162923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/09/2023] [Accepted: 03/13/2023] [Indexed: 05/06/2023]
Abstract
Rampant use of antibiotics has caused a rapid dissemination of antibiotic resistance genes (ARGs) in environment, posing great threats to ecosystems and human health. Applying biochar (BC) in natural systems to combat the spread of ARGs arises as an attention-grabbing solution. Unfortunately, the effectiveness of BC is still unmanageable due to the incomprehensive knowledge over correlations between BC properties and extracellular ARGs transformation. To pinpoint the crucial factors, we primarily explored transformation behaviors of plasmid-mediated ARGs exposed to BC (in suspensions or extraction solutions), adsorption capacities of ARGs on BC, and growth inhibition of E. coli imposed by BC. Specifically, the effects of BC properties including particle size (large-particulate 150 μm and colloidal 0.45-2 μm) and pyrolytic temperature (300, 400, 500, 600, and 700 °C) on the ARGs transformation were emphasized. Results showed that both large-particulate BC and colloidal BC, irrespective of their pyrolytic temperature, would induce significant inhibitory effects on the ARGs transformation, while the BC extraction solutions showed little effect except BC pyrolyzed at 300 °C. Correlation analysis uncovered that the inhibition effect of BC on ARGs transformation was tightly correlated with its adsorption capacity towards plasmid. Accordingly, greater inhibitory effects from those BCs with higher pyrolytic temperatures and smaller particle sizes mainly originated from their greater adsorption capacities. Intriguingly, E. coli was unable to ingest the plasmid adsorbed on BC, which led to ARGs blocked outside the cell membrane, although this inhibitory effect was partially affected by survival inhibition of BC on E. coli. Particularly, significant plasmid aggregation could occur in the extraction solution of large-particulate BC pyrolyzed at 300 °C, leading to a significant inhibition of ARGs transformation. Overall, our findings complete the insufficient understanding over the effects of BC on ARGs transformation behavior, and potentially provide new insights to scientific communities in mitigating ARGs spreading.
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Affiliation(s)
- Xuan Gao
- Zhejiang Province Key Laboratory of Recycling and Ecological Treatment of Waste Biomass, Hangzhou 310023, China; School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Qingkang Meng
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Jing Fang
- Zhejiang Province Key Laboratory of Recycling and Ecological Treatment of Waste Biomass, Hangzhou 310023, China; School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou 310023, China.
| | - Shengdao Shan
- Zhejiang Province Key Laboratory of Recycling and Ecological Treatment of Waste Biomass, Hangzhou 310023, China; School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Daohui Lin
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Dengjun Wang
- School of Fisheries, Aquaculture and Aquatic Science, Auburn University, Auburn, AL 36849, USA
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Henriot CP, Celle H, Klaba V, Biguenet A, Miège C, Daval A, Amiotte-Suchet P, Beugnot JC, Karbowiak T, Bertrand X. Effect of a karst system (France) on extended spectrum beta-lactamase (ESBL)-producing Escherichia coli. WATER RESEARCH 2023; 230:119582. [PMID: 36642030 DOI: 10.1016/j.watres.2023.119582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/16/2022] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
Karst aquifers are an important water resource worldwide particularly exposed to anthropogenic pollution, including antibiotic-resistance. The release of antibiotic-resistant bacterial pathogens in the environment is a major public health challenge worldwide. In this One Health study, we aimed to determine the effect of karst on antibiotic-resistant bacteria. For this purpose, we determined the concentrations of extended-spectrum β-lactamases-producing Escherichia coli (ESBL-Ec) for 92 weeks in a rural karst hydrosystem providing drinking water. ESBL-Ec isolates (n = 130) were sequenced by whole genome sequencing. We analysed the isolates at different levels of granularity, i.e., phylogroup, sequence type, presence of antibiotic-resistance genes, mutations conferring antibiotic-resistance, and virulence genes. The ESBL-Ec concentrations were spatially and temporally heterogeneous in the studied karst hydrosystem. ESBL-Ec isolates survived in the karst and their concentrations were mostly explained by the hydrodynamic of the hydrosystem. We demonstrate that the studied karst has no filtration effect on ESBL-Ec, either quantitatively (i.e., in the ESBL-Ec concentrations) or qualitatively (i.e., in the genetic characteristics of ESBL-Ec isolates).
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Affiliation(s)
- Charles P Henriot
- Chrono-Environnement UMR 6249, CNRS, Université de Franche-Comté, Besançon 25000, France.
| | - Hélène Celle
- Chrono-Environnement UMR 6249, CNRS, Université de Franche-Comté, Besançon 25000, France
| | - Victor Klaba
- Chrono-Environnement UMR 6249, CNRS, Université de Franche-Comté, Besançon 25000, France
| | - Adrien Biguenet
- Hygiène Hospitalière, Centre Hospitalier Universitaire de Besançon, 3 Boulevard Fleming, Besançon 25030, France
| | - Cécile Miège
- INRAE, RiverLy, 5 rue de la Doua, CS20244, Villeurbanne 69625, France
| | - Amandine Daval
- INRAE, RiverLy, 5 rue de la Doua, CS20244, Villeurbanne 69625, France
| | - Philippe Amiotte-Suchet
- UMR CNRS 6282 Biogéosciences, Université de Bourgogne Franche-Comté, 6 Boulevard Gabriel, Dijon 21000, France
| | - Jean-Charles Beugnot
- UMR CNRS 6174 FEMTO-ST, Université de Bourgogne Franche-Comté, 15B Avenue des Montboucons, Besançon 25030, France
| | - Thomas Karbowiak
- Institut Agro Dijon, University Bourgogne Franche-Comté, UMR PAM 02 102, 1 Esplanade Erasme, Dijon 21000, France
| | - Xavier Bertrand
- Chrono-Environnement UMR 6249, CNRS, Université de Franche-Comté, Besançon 25000, France; Hygiène Hospitalière, Centre Hospitalier Universitaire de Besançon, 3 Boulevard Fleming, Besançon 25030, France
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Development of Bio-Electrochemical Reactor for Groundwater Denitrification: Effect of Electric Current and Water Hardness. SUSTAINABILITY 2022. [DOI: 10.3390/su14159454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Nitrate-nitrogen (NO3-N) contaminating groundwater is an environmental issue in many areas, and is difficult to treat by simple processes. A bio-electrochemical reactor (BER) using copper wire and graphite plate was developed to purify the NO3-N-contaminated groundwater. The low (of 10 mA) and high (of 20 mA) electric currents were applied to the BERs, and various influent hardness levels from 20 to 80 mg/L as CaCO3 due to groundwater characteristics were supplied to clarify the total nitrogen removal efficiency and NO3-N removal mechanisms. In the BER-10, the bio-electrochemical reactions caused 85% of total nitrogen to be removed through heterotrophic and autohydrogenotrophic denitrification in the suspended sludge and biofilm. However, the chemical deposit occurring at the cathode from water hardness affected the decreasing denitrification performance; 12.6% of Mg and 8.8% of Ca elements were observed in the biofilm. The enhancement of electrochemical reactions in the BER-20 caused integrating electrochemical and bio-electrochemical reactions; the NO3-N was electrochemically reduced to NO2-N, and it was further biologically reduced to N2. A better total nitrogen removal of 95% was found; although, a larger deposit of Mg (22.8%) and Ca (10.8%) was observed. The relatively low dissolved H2 in the BER-20 confirmed that the deposit affected the decreasing gaseous H2 transfer and inhibition of autohydrogenotrophic denitrification in the suspended sludge. According to the microbial analysis, both heterotrophic and autohydrogenotrophic denitrification were obtained in the suspended sludge of both BERs; Nocadia (26.8%) was the most abundant genus in the BER-10, whereas Flavobacterium (27.1%) and Nocadia (25.0%) were the dominant genera in the BER-20.
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Chang CW, Zamani S, Smilgies DM, Seo H, Park S, Kang T, Lim AR, Joo YL. A prospect of cost-effective handling and transportation of graphene oxides: folding and redispersion of graphene oxide microsheets. NANOTECHNOLOGY 2021; 32:455601. [PMID: 34298525 DOI: 10.1088/1361-6528/ac1755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
Controlling the assembly of 2D materials such as graphene oxides (GO) has a significant impact on their properties and performance. One of the critical issues on the processing and handling of GO is that they need to be in dilution solution (0.5 to 2.5 wt%) to maintain their high degree of exfoliation and dispersion. As a result, the shipment of GO in large quantity involves a huge volume of solvent (water) and thus the transportation costs for large sales volume would become extremely high. Through cross-sectional scanning electron microscopy and polarized optical microscopy together with x-ray diffraction and small-angle x-ray scattering studies, we demonstrated that the assembly and structure of GO microsheets can be preserved without restacking, when assembled GO via water-based wet spinning are re-dispersed into solution. A couple of alkyl ammonium bromides, CTAB and TBAB, as well as NaOH, were examined as coagulants and the resulting fibers were redispersed in an aqueous solution. The redispersed solution of fibers that were wet-spun into the commonly used CTAB and TBAB coagulation baths, maintained their physico-chemical properties (similar to the original GO dispersion) however, did not reveal preservation of liquid crystallinity. Meanwhile, the redispersed fibers that were initially spun into NaOH coagulation bath were able to maintain their liquid crystallinity if the lateral size of the GO sheets was large. Based on these findings, a cost-effective solid handling approach is devised which involves (i) processing GO microsheets in solution into folded layers in solid-state, (ii) transporting assembled GO to the customers, and (iii) redispersion of folded GO into a solution for their use. The proposed solid handling of GO followed by redispersion into solution can greatly reduce the transportation costs of graphene oxide materials by reducing the transportation volume by more than 90%.
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Affiliation(s)
- Chao-Wen Chang
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, United States of America
| | - Somayeh Zamani
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, United States of America
| | - Detlef M Smilgies
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, United States of America
| | - Honguk Seo
- Research Institute of Chemistry, JMC Corp., Ulsan, 44998, Republic of Korea
| | - Sangjoon Park
- Research Institute of Chemistry, JMC Corp., Ulsan, 44998, Republic of Korea
| | - Taechung Kang
- Research Institute of Chemistry, JMC Corp., Ulsan, 44998, Republic of Korea
| | - Ae Ran Lim
- Department of Carbon Convergence Engineering and Department of Science Education, Jeonju University, Jeonju 55069, Republic of Korea
| | - Yong Lak Joo
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, United States of America
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Patel TN, R P, Vashi Y, Bhattacharya P. Toxic impacts and industrial potential of graphene. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, TOXICOLOGY AND CARCINOGENESIS 2020; 38:269-297. [PMID: 32897810 DOI: 10.1080/26896583.2020.1812335] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Advancement in the field of nanotechnology has increased the synthesis and exploitation of graphene-like nanomaterials. Graphene is a two-dimensional planar and hexagonal array of carbon atoms. Due to its flexible nature graphene and its derivatives have several significant prospects extending from electronics to life sciences and drug delivery systems. In this review, we enlist some of the toxic effects of graphene family nanomaterials (GFNs) in various aspects of biosystems viz., in vitro, in vivo, microbial, molecular and environmental. We also appreciate their extensive and promising applications though with some underlying challenges. This review also draws attention toward current and future prospect of global graphene market for wide-range commercialization.
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Affiliation(s)
- Trupti N Patel
- Department of Integrative Biology, Vellore Institute of Technology, Vellore, India
| | - Priyanka R
- College of Veterinary Medicine, Jeju National University, Jeju, Republic of Korea
| | - Yash Vashi
- Operations and Product Development Department, University of Southern California, Los Angeles, California, USA
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