Simultaneous elimination of amoxicillin and antibiotic resistance genes in activated sludge process: Contributions of easy-to-biodegrade food

Zhang, Chongjun; Zhao, Zihan; Zhou, Dandan

doi:10.1016/j.scitotenv.2020.142907

Cited by 23 publications

(7 citation statements)

References 58 publications

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“…The degradation of amoxicillin in an acidic pH starts with the opening of the strained four-membered beta-lactam ring to yield the hydrolysis by-product 1, amoxicillin penicilloic acid [14,16,34,41,[45][46][47][48][49]. Compound 1 can undergo two possible degradation pathways to yield several different transformed compounds.…”

Section: Amoxicillin Degradation Mechanism Under Terrestrial Solar Ra...mentioning

confidence: 99%

“…Compound 1 can undergo two possible degradation pathways to yield several different transformed compounds. In one path, the decarboxylation of the free carboxylic acid of compound 1 leads to the formation of stereoisomeric compound 2, amoxicillin penilloic acid [14,16,34,41,[46][47][48]. The subsequent release of the carboxylic group from the penilloic acid generates the degradation compound 3.…”

Section: Amoxicillin Degradation Mechanism Under Terrestrial Solar Ra...mentioning

confidence: 99%

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Heterogeneous Photocatalysis of Amoxicillin under Natural Conditions and High-Intensity Light: Fate, Transformation, and Mineralogical Impacts

Ellepola

Rubasinghege

2022

Environments

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The β-Lactam antibiotic amoxicillin is among the most widely used antibiotics in human and veterinary medicine. Consequently, amoxicillin is abundant in natural waters and can undergo diverse abiotic reactions to form degradation compounds under environmental conditions. Yet, little is known about these decay pathways and mineralogical impacts on environmental amoxicillin degradation. The current study focuses on understanding the mineralogical influences of amoxicillin degradation under ecological conditions. We studied the role of anatase and kaolinite on amoxicillin degradation under irradiated and non-irradiated conditions. Anatase increases amoxicillin degradation by 4.5-fold in the presence of light compared to just being exposed to sunlight. Interestingly, anatase also showed a higher degradation rate under dark than light controls. Conversely, kaolinite diminishes the amoxicillin degradation under irradiation. The formation of degradation compounds was mineralogy-controlled, while no mineralization was observed. Further, we irradiated amoxicillin with a high-intensity light to evaluate its removal from wastewater. The formation of varying amoxicillin degradation products with high-intensity light will limit its removal from wastewater. Our study emphasizes that the mineralogical impact on amoxicillin degradation is diverse, and the role of anatase is significant. Consequently, the increased addition of manufactured titanium nanoparticles to the environment can further enhance these effects.

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Section: Amoxicillin Degradation Mechanism Under Terrestrial Solar Ra...mentioning

confidence: 99%

Section: Amoxicillin Degradation Mechanism Under Terrestrial Solar Ra...mentioning

confidence: 99%

Heterogeneous Photocatalysis of Amoxicillin under Natural Conditions and High-Intensity Light: Fate, Transformation, and Mineralogical Impacts

Ellepola

Rubasinghege

2022

Environments

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“…The ARGs can be transferred traditionally from parent ARB to their offspring. However, more commonly, the ARGs are transferred through horizontal gene transfers where the genetic factors can be transferred from an individual bacterium to another individual bacteria from the same genus and even individual bacteria from different genera via conjugation, transduction, transformation, and other methods (Dong et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Emerging Antibiotic Resistance Genes in the Aquatic Ecosystems: A Review

KHAIRIL RIJAL,

ZULKIFLI,

ABDUL RAHIM

et al. 2023

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Antibiotic use may hasten the emergence of antibiotic resistance genes (ARGs) in bacteria, posing health concerns to humans and animals alike. The emergence of ARGs in aquatic ecosystems is becoming a growing problem around the world. Hundreds of different ARGs encoding antibiotic resistance have been discovered in bacteria found in sewage, effluent treatment facilities, surface water, groundwater, and even drinking water. Antibiotic resistance genes can be transmitted from one cell to another by conjugation, transformation, or transduction. This gene exchange allows resistance to spread quickly within a bacterial community and between various species of bacteria. This is more so in an ideal environment such as aquatic ecosystems. The purpose of this article is to review the presence of ARGs in various aquatic ecosystems and how this will affect humans. Based on 30 selected studies in the last five years (2017-2022), we notice that ARGs can be found in various aquatic ecosystems, including surface water, wastewater, and plastic and microplastic debris found in these ecosystems. There are some studies showing ARGs are directly affecting humans, but there are also many ongoing efforts and technologies to reduce ARGs in aquatic ecosystems. From the discussion, we conclude that antibiotic resistance genes can thrive in various aquatic ecosystems, which offer an ideal environment for their replication. Although aimed at reducing pollutants in the environment, wastewater treatment plants (WWTPs) have been identified as potential hubs for the spread of antibiotic resistance determinants into aquatic ecosystems, showing the importance of continuous monitoring and finding solutions. Keyword(s) : Antibiotic resistance genes (ARG); antibiotic resistance bacteria (ARB); microplastics; aquatic ecosystems; antibiotics

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“…Various methods have been adopted to remove tetracycline from wastewater, including microbiological treatment, advanced oxidation processes (AOPs), membrane processes, electrochemical processes, and adsorption [4]. Among them, biological treatment cannot completely remove antibiotics, and the toxicity of contaminants affects biological activity and thus limits the removal efficiency [5]. Catalyst for AOPs may be difficult to synthesis and the reagents used in chemical processes may cause secondary contamination [6].…”

Section: Introductionmentioning

confidence: 99%

Enhanced adsorption performance of tetracycline in aqueous solutions by KOH-modified peanut shell-derived biochar

Yin

Xie

et al. 2021

Biomass Conv. Bioref.

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Modification of biochar is essential to improve its properties and then promote its adsorption effect. In this study, modified biochar derived from peanut shell was prepared by KOH treatment. Adsorption behavior and mechanisms toward tetracycline (TC) by biochar were investigated. The results showed that KOH modification significantly changed the surface morphology, pore structure, elemental composition, functional groups, minerals, and carbon defects of biochar. The content of C, H, N, and S of biochar decreased as well as the content of O and ash increased after KOH modification. Surface area and pore volume of KBC were 1271.97 m 2 •g −1 and 0.653 cm 3 •g −1 , which was 5.8 and 5.4 folds than that of BC, respectively. KOH modification also changed the Ca, Si minerals components in biochar. Moreover, the functional groups in biochar also significantly changed after modification, especially O-and N-containing groups. More carbon defects occurred in KBC due to the KOH reactions. Pseudo-second-order model and Langmuir model can better describe the adsorption processes of TC on biochars. The maximum adsorption capacity of TC on KBC reached 356.19 mg•g −1 at 318.15 K. KBC has a stable removal effect to TC in a wide pH range and under the interference of co-existing ions. Pore filling and π-π interaction were the main adsorption mechanisms for TC removal by KBC. Therefore, KOH-modified peanut shell-derived biochar has a potential to act as an adsorbent to remove TC from aqueous solutions or immobilization in soils.

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Simultaneous elimination of amoxicillin and antibiotic resistance genes in activated sludge process: Contributions of easy-to-biodegrade food

Cited by 23 publications

References 58 publications

Heterogeneous Photocatalysis of Amoxicillin under Natural Conditions and High-Intensity Light: Fate, Transformation, and Mineralogical Impacts

Heterogeneous Photocatalysis of Amoxicillin under Natural Conditions and High-Intensity Light: Fate, Transformation, and Mineralogical Impacts

Emerging Antibiotic Resistance Genes in the Aquatic Ecosystems: A Review

Enhanced adsorption performance of tetracycline in aqueous solutions by KOH-modified peanut shell-derived biochar

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