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学者姓名:高景峰

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< Page ,Total 23 >
Phenacetin promoted the rapid start-up and stable maintenance of partial nitrification: Responses of nitrifiers and antibiotic resistance genes SCIE
期刊论文 | 2024 , 933 | SCIENCE OF THE TOTAL ENVIRONMENT
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Abstract :

Phenacetin (PNCT) belongs to one of the earliest synthetic antipyretics. However, impact of PNCT on nitrifying microorganisms in wastewater treatment plants and its potential microbial mechanism was still unclear. In this study, PN could be initiated within six days by PNCT anaerobic soaking treatment (8 mg/L). In order to improve the stable performance of PN, 21 times of PNCT aerobic soaking treatment every three days was conducted and PN was stabilized for 191 days. After PN was damaged, ten times of PNCT aerobic soaking treatment every three days was conducted and PN was recovered after once soaking, maintained over 88 days. Ammonia oxidizing bacteria might change the dominant oligotype to gradually adjust to PNCT, and the increase of abundance and activity of Nitrosomonas promoted the initiation of PN. For nitrite-oxidizing bacteria (NOB), the increase of Candidatus Nitrotoga and Nitrospira destroyed PN, but PN could be recovered after once aerobic soaking illustrating NOB was not resistant to PNCT. KEGG and COG analysis suggested PNCT might disrupt rTCA cycle of Nitrospira, resulting in the decrease of relative abundance of Nitrospira. Moreover, PNCT did not lead to the sharp increase of absolute abundances of antibiotic resistance genes (ARGs), and the risk of ARGs transmission was negligible.

Keyword :

Soaking treatment Soaking treatment Antibiotic resistance genes Antibiotic resistance genes Rapid start-up Rapid start-up Stable maintenance Stable maintenance Partial nitrification Partial nitrification Phenacetin Phenacetin

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GB/T 7714 Zhang, Yi , Wu, Zejie , Gao, Yongqing et al. Phenacetin promoted the rapid start-up and stable maintenance of partial nitrification: Responses of nitrifiers and antibiotic resistance genes [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2024 , 933 .
MLA Zhang, Yi et al. "Phenacetin promoted the rapid start-up and stable maintenance of partial nitrification: Responses of nitrifiers and antibiotic resistance genes" . | SCIENCE OF THE TOTAL ENVIRONMENT 933 (2024) .
APA Zhang, Yi , Wu, Zejie , Gao, Yongqing , Gao, Jingfeng , Bao, Fangbo , Zhao, Yifan et al. Phenacetin promoted the rapid start-up and stable maintenance of partial nitrification: Responses of nitrifiers and antibiotic resistance genes . | SCIENCE OF THE TOTAL ENVIRONMENT , 2024 , 933 .
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Efficient peroxymonosulfate activation by nanoscale zerovalent iron for removal of sulfadiazine and sulfadiazine resistance bacteria: Sulfidated modification or not SCIE
期刊论文 | 2024 , 469 | JOURNAL OF HAZARDOUS MATERIALS
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Abstract :

Whether it's necessary to extra chemical synthesis steps to modify nZVI in peroxymonosulfate (PMS) activation process are worth to further investigation. The 56 mg/L nZVI/153.65 mg/L PMS and 56 mg/L sulfidated nZVI (S-nZVI) (S/Fe molar ratio = 1:5)/153.65 mg/L PMS) processes could effectively attain 97.7% (with kobs of 3.7817 min(-1)) and 97.0% (with k(obs) of 3.4966 min(-1)) of the degradation of 20 mg/L sulfadiazine (SDZ) in 1 min, respectively. The nZVI/PMS system could quickly achieve 85.5% degradation of 20 mg/L SDZ in 1 min and effectively inactivate 99.99% of coexisting Pseudomonas. HLS-6 (5.81-log) in 30 min. Electron paramagnetic resonance tests and radical quenching experiments determined SO4 center dot-, HO center dot, O-1(2) and O-2(center dot-) were responsible for SDZ degradation. The nZVI/PMS system could still achieve the satisfactory degradation efficiency of SDZ under the influence of humic acid (exceeded 96.1%), common anions (exceeded 67.3%), synthetic wastewater effluent (exceeded 90.7%) and real wastewater effluent (exceeded 78.7%). The high degradation efficiency of tetracycline (exceeded 98.9%) and five common disinfectants (exceeded 96.3%) confirmed the applicability of the two systems for pollutants removal. It's no necessary to extra chemical synthesis steps to modify nZVI for PMS activation to remove both chemical and biological pollutants.

Keyword :

Sulfadiazine degradation Sulfadiazine degradation Sulfidated modification Sulfidated modification Sulfadiazine resistance bacteria removal Sulfadiazine resistance bacteria removal Nanoscale zerovalent iron Nanoscale zerovalent iron Peroxymonosulfate Peroxymonosulfate

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GB/T 7714 Liu, Ying , Gao, Jingfeng , Wang, Qian et al. Efficient peroxymonosulfate activation by nanoscale zerovalent iron for removal of sulfadiazine and sulfadiazine resistance bacteria: Sulfidated modification or not [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 469 .
MLA Liu, Ying et al. "Efficient peroxymonosulfate activation by nanoscale zerovalent iron for removal of sulfadiazine and sulfadiazine resistance bacteria: Sulfidated modification or not" . | JOURNAL OF HAZARDOUS MATERIALS 469 (2024) .
APA Liu, Ying , Gao, Jingfeng , Wang, Qian , Chen, Hao , Zhang, Yi , Fu, Xiaoyu . Efficient peroxymonosulfate activation by nanoscale zerovalent iron for removal of sulfadiazine and sulfadiazine resistance bacteria: Sulfidated modification or not . | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 469 .
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The effects of didodecyl dimethyl ammonium chloride on microbial communities and resistance genes in floc, granular and biofilm denitrification sludge SCIE
期刊论文 | 2024 , 906 | SCIENCE OF THE TOTAL ENVIRONMENT
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Abstract :

As a type of quaternary ammonium compounds, didodecyl dimethyl ammonium chloride (DADMAC C12) was frequently detected in wastewater treatment plants. Here, floc-based sequencing batch reactor (FSBR), granule -based SBR (GSBR) and biofilm SBR (BSBR) were fed with 0.5, 5 and 10 mg/L of DADMAC C12 for 120 d. Compared with floc sludge and granule sludge, biofilm had the strongest ability to resist the impact of DADMAC C12. Notably, in both FSBR and GSBR systems, 5 mg/L DADMAC C12 promoted denitrification sludge to become hydrophobic and compact due to an increase in alpha-Helix/(beta-Sheet+Random coil), consequently enhancing sludge granulation. Besides,high concentration of DADMAC C12 generally increased the abundances of MGEs in three denitrification systems, except extracellular MGEs in water. The variation of efflux pump ARGs was basically consistent with that of MGEs. The stimulation of DADMAC C12 also increased significantly the abundance of extracellular antibiotics deactivation ARGs in water in three denitrification systems. Besides, DADMAC C12 induced co-selection among various ARGs and promoted the proliferation and spread of sulfonamide ARGs in water.

Keyword :

Extracellular and intracellular antibiotic Extracellular and intracellular antibiotic Denitrification system Denitrification system resistance genes resistance genes Didodecyl dimethyl ammonium chloride Didodecyl dimethyl ammonium chloride Three forms of sludge Three forms of sludge Microbial community structure Microbial community structure

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GB/T 7714 Zhao, Mingyan , Gao, Jingfeng , Cui, Yingchao et al. The effects of didodecyl dimethyl ammonium chloride on microbial communities and resistance genes in floc, granular and biofilm denitrification sludge [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2024 , 906 .
MLA Zhao, Mingyan et al. "The effects of didodecyl dimethyl ammonium chloride on microbial communities and resistance genes in floc, granular and biofilm denitrification sludge" . | SCIENCE OF THE TOTAL ENVIRONMENT 906 (2024) .
APA Zhao, Mingyan , Gao, Jingfeng , Cui, Yingchao , Zhang, Haoran , Wang, Zhiqi , Zhang, Shujun et al. The effects of didodecyl dimethyl ammonium chloride on microbial communities and resistance genes in floc, granular and biofilm denitrification sludge . | SCIENCE OF THE TOTAL ENVIRONMENT , 2024 , 906 .
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Removal of antibiotic resistant bacteria by the coupled system of ferrous ion activated peroxymonosulfate (PMS) and sodium percarbonate (SPC): Performance and mechanisms SCIE
期刊论文 | 2024 , 491 | CHEMICAL ENGINEERING JOURNAL
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Antibiotic resistance has turned into a focus of universal public health concern. Wastewater treatment plants are considered as reservoirs of antibiotic resistant bacteria (ARB) and antibiotic resistant genes (ARGs), which can be transmitted to the environment. In this research, an effective method for inactivating Escherichia coli DH5 alpha (E. coli DH5 alpha) carrying resistance genes was developed utilizing dual oxidant system of peroxymonosulfate (PMS) and sodium percarbonate (SPC) in the presence of ferrous ions (Fe(II)). The results indicated that E. coli DH5 alpha could be inactivated 6.36 log under the conditions of 0.50 mM PMS, 0.50 mM SPC and 0.50 mM Fe(II) after 30 min. Besides, the removal of different types of ARB and pollutants could also be achieved by Fe(II)/PMS/ SPC system. The quenching experiments and EPR analysis demonstrated that reactive species (center dot OH, SO4 center dot-, O2 center dot- , 1O2 and CO3 center dot- ) involved in the inactivation of E. coli DH5 alpha. Bacterial damage mechanisms were systematically studied in terms of cell structure and morphology, enzyme activity, malondialdehyde and intracellular reactive oxygen species levels. The inactivation of E. coli DH5 alpha in complex water matrix (including coexisting of anions and natural organic matter) and real wastewater was inhibited. The abundance of intracellular ARGs decreased by 1.15 log, whereas extracellular ARGs increased by 0.32 log. This research supplied a prospective approach for inhibiting the dissemination of antibiotic resistance.

Keyword :

Antibiotic resistant bacteria Antibiotic resistant bacteria Sodium percarbonate Sodium percarbonate Inactivation mechanism Inactivation mechanism Peroxymonosulfate Peroxymonosulfate Coupled system Coupled system

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GB/T 7714 Wang, Qian , Gao, Jingfeng , Chen, Hao et al. Removal of antibiotic resistant bacteria by the coupled system of ferrous ion activated peroxymonosulfate (PMS) and sodium percarbonate (SPC): Performance and mechanisms [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 491 .
MLA Wang, Qian et al. "Removal of antibiotic resistant bacteria by the coupled system of ferrous ion activated peroxymonosulfate (PMS) and sodium percarbonate (SPC): Performance and mechanisms" . | CHEMICAL ENGINEERING JOURNAL 491 (2024) .
APA Wang, Qian , Gao, Jingfeng , Chen, Hao , Liu, Ying , Fu, Xiaoyu , An, Jiawen et al. Removal of antibiotic resistant bacteria by the coupled system of ferrous ion activated peroxymonosulfate (PMS) and sodium percarbonate (SPC): Performance and mechanisms . | CHEMICAL ENGINEERING JOURNAL , 2024 , 491 .
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Will the removal of carbon, nitrogen and mixed disinfectants occur simultaneously: The key role of heterotrophic nitrification-aerobic denitrification strain SCIE
期刊论文 | 2024 , 480 | JOURNAL OF HAZARDOUS MATERIALS
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Abstract :

The capacity and mechanism of heterotrophic nitrification-aerobic denitrification (HNAD) strain (H1) to remove carbon, nitrogen, disinfectants chloroxylenol (PCMX) and benzethonium chloride (BEC) were investigated in this study. PCMX was removed via metabolism and chemical oxygen demand co-metabolism process. BEC was eliminated through bacterial adsorption, which greatly inhibited the removal of other pollutants. Carbon source optimization tests revealed that glucose was the optimal carbon source for co-removal of pollutants under mixed disinfectants circumstances (PCMX + BEC). Comparing the groups without (G1) and with disinfectants (G2), the content of extracellular polymeric substances was higher, and hydrophobicity was enhanced under the hazardous conditions of G2. All the nitrogen metabolism functional genes in G2 were up-regulated, and the electron transport system activity was also improved. At the same time, G2 had lower reactive oxygen species content, which reduced the probability of resistance genes dissemination, but the abundance of most quantified resistance genes was elevated in G2. Toxicity assessment assays found a dramatic reduction in the virulence of G2's effluent compared with the mixed disinfectants. The results confirmed that H1 strain could be used to treat the disinfectant-containing wastewater, which may aid in the application of HNAD process.

Keyword :

Extracellular polymeric substances Extracellular polymeric substances Heterotrophic nitrification-aerobic denitrifica- Heterotrophic nitrification-aerobic denitrifica- Resistance genes Resistance genes Co-metabolism Co-metabolism Mixed disinfectants Mixed disinfectants tion tion

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GB/T 7714 Guo, Yi , Gao, Jingfeng , Zhang, Yi et al. Will the removal of carbon, nitrogen and mixed disinfectants occur simultaneously: The key role of heterotrophic nitrification-aerobic denitrification strain [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 480 .
MLA Guo, Yi et al. "Will the removal of carbon, nitrogen and mixed disinfectants occur simultaneously: The key role of heterotrophic nitrification-aerobic denitrification strain" . | JOURNAL OF HAZARDOUS MATERIALS 480 (2024) .
APA Guo, Yi , Gao, Jingfeng , Zhang, Yi , Xie, Tian , Wang, Qian , An, Jiawen . Will the removal of carbon, nitrogen and mixed disinfectants occur simultaneously: The key role of heterotrophic nitrification-aerobic denitrification strain . | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 480 .
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Response of nitrification system to co-exposure of sucralose and single or combined disinfectants: Reducing damage to nitrification performance and aggravating the spread of intracellular resistance genes SCIE
期刊论文 | 2024 , 489 | CHEMICAL ENGINEERING JOURNAL
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Sucralose (SUC) is an artificial sweetener for everyday consumption and often co -exists with disinfectants such as triclosan (TCS) and dialkyldimethyl ammonium compound (DAC) in sewage. Considering their continuous accumulation in sewage, it is essential to understand the impacts of their single and combined stress on the evolution of resistance genes (RGs) and microorganisms. In this study, three sequencing batch reactors (SBRs) were established, which were added with SUC, disinfectant, SUC and disinfectant, respectively, and named SSBR, DSBR and SDSBR in turn. There were four stages in total, the first two stages and the latter two stages were set to explore the effects of co -exposure of SUC and single disinfectant (TCS), SUC and combined disinfectants (TCS and DAC) on nitrification system, respectively. SSBR showed excellent ammonia oxidation performance in the whole operation stages. Compared with DSBR, the microorganisms in SDSBR under the combined stress of SUC and TCS were less inhibited. TCS and DAC destroyed the ammonia oxidation performance of DSBR and SDSBR. Within 120 days, the removal efficiency of TCS reached 90 %. In SSBR, 1 mg/L SUC promoted the proliferation of RGs, especially induced free RGs in water (w-RGs) to maintain high abundance and persistence. Compared with single stress, the abundances of intracellular RGs in sludge were higher under the combined stress of SUC and TCS, and the risk of RGs transmission was greater. The combined stress of SUC and disinfectants (TCS and DAC) led to a higher enrichment of w-RGs, exacerbating the risk of w-RGs transmission.

Keyword :

Triclosan Triclosan Single and combined stress Single and combined stress Sucralose Sucralose Quaternary ammonium compounds Quaternary ammonium compounds Extracellular and intracellular resistance genes Extracellular and intracellular resistance genes

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GB/T 7714 Zeng, Liqin , Gao, Jingfeng , Cui, Yingchao et al. Response of nitrification system to co-exposure of sucralose and single or combined disinfectants: Reducing damage to nitrification performance and aggravating the spread of intracellular resistance genes [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 489 .
MLA Zeng, Liqin et al. "Response of nitrification system to co-exposure of sucralose and single or combined disinfectants: Reducing damage to nitrification performance and aggravating the spread of intracellular resistance genes" . | CHEMICAL ENGINEERING JOURNAL 489 (2024) .
APA Zeng, Liqin , Gao, Jingfeng , Cui, Yingchao , Zhao, Yifan , Guo, Yi , Yuan, Yukun et al. Response of nitrification system to co-exposure of sucralose and single or combined disinfectants: Reducing damage to nitrification performance and aggravating the spread of intracellular resistance genes . | CHEMICAL ENGINEERING JOURNAL , 2024 , 489 .
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Hormesis and synergistic effects of disinfectants chloroxylenol and benzethonium chloride on highly efficient heterotrophic nitrification-aerobic denitrification functional strain: From performance to mechanism SCIE
期刊论文 | 2024 , 476 | JOURNAL OF HAZARDOUS MATERIALS
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The heterotrophic nitrification-aerobic denitrification (HNAD) strain Exiguobacterium H1 (H1) was isolated in this study. The changes in nitrogen metabolism functions of H1 strain were discussed in presence of disinfectants chloroxylenol (PCMX) and benzethonium chloride (BEC) alone and combined pollution (PCMX+BEC). The H1 strain could use NH4+-N, NO2- -N and NO3 --N as nitrogen sources and had good nitrogen removal performance under conditions of C/N ratio 25, pH 5-8, 25-35 oC and sodium acetate as carbon. PCMX and BEC alone exhibited hormesis effects on H1 strain which promoted the growth of H1 strain at low concentrations but inhibited it at high concentrations, and combined pollution showed synergistic inhibitory on H1 strain. H1 strain owned a full nitrogen metabolic pathway according to functional genes quantification. PCMX encouraged nitrification process of H1, while BEC and combined pollution mostly blocked nitrogen removal. PCMX, but not BEC, mainly led to the enrichment of resistance genes. These findings will aid in systematic assessment of contaminant tolerance characteristics of HNAD strain and its application prospects.

Keyword :

Heterotrophic nitrification-aerobic denitrifica- Heterotrophic nitrification-aerobic denitrifica- Hormesis effects Hormesis effects Resistance genes Resistance genes Chloroxylenol and benzethonium chloride Chloroxylenol and benzethonium chloride Oxidative stress Oxidative stress tion tion

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GB/T 7714 Guo, Yi , Gao, Jingfeng , Cui, Yingchao et al. Hormesis and synergistic effects of disinfectants chloroxylenol and benzethonium chloride on highly efficient heterotrophic nitrification-aerobic denitrification functional strain: From performance to mechanism [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 476 .
MLA Guo, Yi et al. "Hormesis and synergistic effects of disinfectants chloroxylenol and benzethonium chloride on highly efficient heterotrophic nitrification-aerobic denitrification functional strain: From performance to mechanism" . | JOURNAL OF HAZARDOUS MATERIALS 476 (2024) .
APA Guo, Yi , Gao, Jingfeng , Cui, Yingchao , Zhao, Yifan , Ma, Biao , Zeng, Liqin et al. Hormesis and synergistic effects of disinfectants chloroxylenol and benzethonium chloride on highly efficient heterotrophic nitrification-aerobic denitrification functional strain: From performance to mechanism . | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 476 .
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Evolution of microbial community and resistance genes in denitrification system under single and combined exposure to benzethonium chloride and methylparaben SCIE
期刊论文 | 2024 , 480 | JOURNAL OF HAZARDOUS MATERIALS
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Benzethonium chloride (BZC) and methylparaben (MeP) are commonly added into cosmetics as preservatives, which are frequently detected in wastewater treatment plants. Different response patterns of denitrification system were proposed under single and combined exposure to BZC and MeP (0, 0.5, 5 mg/L) by evaluating system performance, functional genes, extracellular polymeric substance (EPS), cytotoxicity, microbial community structure and resistance genes (RGs). The inhibition effect of BZC on denitrification system was stronger than MeP, and the co-exposure of BZC and MeP showed synergistic effect, enhancing the inhibition effect of BZC single exposure. BZC and/or MeP could promote the diffusion of RGs in sludge, including intracellular RGs (siRGs) and extracellular RGs (se-RGs). Moreover, the single exposure of BZC and co-exposure of BZC and MeP increased the dissemination risks of RGs in water (w-RGs). IntI1 and tnpA-04, mobile genetic elements (MGEs), correlated positively with diverse RGs from different fractions. Notably, the spread of RGs through horizontal gene transfer mediated by MGEs and the flow of si-RGs into extracellular and water were observed in this study.

Keyword :

Microbial community Microbial community Methylparaben Methylparaben Intracellular and extracellular resistance genes Intracellular and extracellular resistance genes Benzethonium chloride Benzethonium chloride Heterotrophic denitrification system Heterotrophic denitrification system

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GB/T 7714 Zhang, Ke , Gao, Jingfeng , Lu, Tianyi et al. Evolution of microbial community and resistance genes in denitrification system under single and combined exposure to benzethonium chloride and methylparaben [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 480 .
MLA Zhang, Ke et al. "Evolution of microbial community and resistance genes in denitrification system under single and combined exposure to benzethonium chloride and methylparaben" . | JOURNAL OF HAZARDOUS MATERIALS 480 (2024) .
APA Zhang, Ke , Gao, Jingfeng , Lu, Tianyi , Wang, Yuxuan , Zhang, Jinming , An, Jiawen et al. Evolution of microbial community and resistance genes in denitrification system under single and combined exposure to benzethonium chloride and methylparaben . | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 480 .
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The combination of ciprofloxacin and dialkyldimethyl ammonium compound synergistically proliferated intracellular resistance genes in nitrifying system SCIE
期刊论文 | 2024 , 930 | SCIENCE OF THE TOTAL ENVIRONMENT
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Antibiotics and quaternary ammonium compounds (QACs) usually co-exist in wastewater treatment plants. Hence, three sequencing batch reactors were established and named as R1, R2 and R3, to investigate the effects of individual and combined exposure of different concentrations of ciprofloxacin (CIP) (0.2, 1.0 and 2.0 mg/L) and dialkyldimethyl ammonium compound (DADMAC) (0.4, 2.0 and 4.0 mg/L) on the performance, microbial community structures and resistance genes (RGs) in nitrifying system during 150 days. Results showed that CIP had a slight effect on ammonia oxidation activity, while 2.0 and 4.0 mg/L DADAMAC could obviously inhibit it, and the combination of CIP and DADMAC had a synergistic inhibitory effect. Besides, both CIP and DADMAC caused partial nitrification, and the order of nitrite accumulation rate was ranked as R3 > R2 > R1. The combination of CIP and DADMAC had an antagonistic effect on the increase of sludge particle size and alpha-Helix/ ( beta -Sheet + Random coil) was lowest in R3 (0.40). The combination of CIP and DADMAC synergistically stimulated most intracellular RGs in sludge, and the relative abundances of target RGs ( e.g. , qacEdelta1-01 , qacH-01 and qnrS ) at the end of operation in R3 were increased by 4.61 - 18.19 folds compared with those in CK, which were 1.34 - 5.57 folds higher than the R1 and R2. Moreover, the combination of CIP and DADMAC also promoted the transfer of RGs from sludge to water and enriched more potential hosts of RGs, further promoting the spread of RGs in nitrifying system. Thus, the combined pollution of CIP and DADMAC in wastewaters should attract more attentions.

Keyword :

Nitrifying system Nitrifying system Intracellular and extracellular resistance genes Intracellular and extracellular resistance genes Dialkyldimethyl ammonium compound Dialkyldimethyl ammonium compound Combined pollution Combined pollution Ciprofloxacin Ciprofloxacin

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GB/T 7714 Xu, Hongxin , Gao, Jingfeng , Cui, Yingchao et al. The combination of ciprofloxacin and dialkyldimethyl ammonium compound synergistically proliferated intracellular resistance genes in nitrifying system [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2024 , 930 .
MLA Xu, Hongxin et al. "The combination of ciprofloxacin and dialkyldimethyl ammonium compound synergistically proliferated intracellular resistance genes in nitrifying system" . | SCIENCE OF THE TOTAL ENVIRONMENT 930 (2024) .
APA Xu, Hongxin , Gao, Jingfeng , Cui, Yingchao , Wang, Zhiqi , Zhao, Yifan , Yuan, Yukun et al. The combination of ciprofloxacin and dialkyldimethyl ammonium compound synergistically proliferated intracellular resistance genes in nitrifying system . | SCIENCE OF THE TOTAL ENVIRONMENT , 2024 , 930 .
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Mechanisms on the removal of gram-negative/positive antibiotic resistant bacteria and inhibition of horizontal gene transfer by ferrate coupled with peroxydisulfate or peroxymonosulfate SCIE
期刊论文 | 2024 , 470 | JOURNAL OF HAZARDOUS MATERIALS
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The existence of antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) has been a global public environment and health issue. Due to the different cell structures, gram-positive/negative ARB exhibit various inactivation mechanisms in water disinfection. In this study, a gram-negative ARB Escherichia coli DH5 alpha (E. coli DH5 alpha) was used as a horizontal gene transfer (HGT) donor, while a gram-positive ARB Bacillus as a recipient. To develop an efficient and engineering applicable method in water disinfection, ARB and ARGs removal efficiency of Fe(VI) coupled peroxydisulfate (PDS) or peroxymonosulfate (PMS) was compared, wherein hydroxylamine (HA) was added as a reducing agent. The results indicated that Fe(VI)/PMS/HA showed higher disinfection efficiency than Fe(VI)/PDS/HA. When the concentration of each Fe(VI), PMS, HA was 0.48 mM, 5.15 log E. coli DH5 alpha and 3.57 log Bacillus lost cultivability, while the proportion of recovered cells was 0.0017 % and 0.0566 %, respectively, and HGT was blocked. Intracellular tetA was reduced by 2.49 log. Fe(IV) and/or Fe (V) were proved to be the decisive reactive species. Due to the superiority of low cost as well as high efficiency and practicality, Fe(VI)/PMS/HA has significant application potential in ARB, ARGs removal and HGT inhibition, offering a new insight for wastewater treatment.

Keyword :

Peroxydisulfate Peroxydisulfate Ferrate Ferrate Antibiotic resistance bacteria and genes Antibiotic resistance bacteria and genes Plasmid-mediated horizontal gene transfer Plasmid-mediated horizontal gene transfer Peroxymonosulfate Peroxymonosulfate

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GB/T 7714 Fu, Xiaoyu , Gao, Jingfeng , Wang, Qian et al. Mechanisms on the removal of gram-negative/positive antibiotic resistant bacteria and inhibition of horizontal gene transfer by ferrate coupled with peroxydisulfate or peroxymonosulfate [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 470 .
MLA Fu, Xiaoyu et al. "Mechanisms on the removal of gram-negative/positive antibiotic resistant bacteria and inhibition of horizontal gene transfer by ferrate coupled with peroxydisulfate or peroxymonosulfate" . | JOURNAL OF HAZARDOUS MATERIALS 470 (2024) .
APA Fu, Xiaoyu , Gao, Jingfeng , Wang, Qian , Chen, Hao , Liu, Ying , Zeng, Liqin et al. Mechanisms on the removal of gram-negative/positive antibiotic resistant bacteria and inhibition of horizontal gene transfer by ferrate coupled with peroxydisulfate or peroxymonosulfate . | JOURNAL OF HAZARDOUS MATERIALS , 2024 , 470 .
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