Recent trends in advanced oxidation process-based degradation of erythromycin: Pollution status, eco-toxicity and degradation mechanism in aquatic ecosystems

Ashraf, Aniqa; Liu, Guijian; Yousaf, Balal; Arif, Muhammad; Ahmed, Rafay; Irshad, Samina; Cheema, Ayesha Imtiyaz; Rashid, Audil; Gulzaman, Humaira

doi:10.1016/j.scitotenv.2021.145389

Cited by 50 publications

(9 citation statements)

References 126 publications

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“…The protonation/deprotonation of the ERY is based on their pKa values, which control the adsorption of the ERY on the nanocomposite surface due to electrostatic forces. For pH below the pKa values, ERY contains positively charged groups in its structures, while at higher pH values, it is neutral [17]. Thus, at pH 7.3, ERY has a positive charge.…”

Section: Xrdmentioning

confidence: 99%

“…The hydroxyl radical ( • OH) generated from H 2 O 2 , surface-bound • OH ( • OH surf ), hole (h + ), and the electron (e − ) superoxide ( • O 2 − ) can be considered as reactive species responsible for ERY degradation. Detailed experiments for the main reactive species have been discussed in the Supplementary Figure S2 [1,17,19].…”

Section: Proposed Mechanisms For Degradationmentioning

confidence: 99%

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Effect of UV Irradiation on the Structural Variation of Metal Oxide-Silica Nanocomposites for Enhanced Removal of Erythromycin at Neutral pH

et al. 2022

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In this study, the effect of UV treatment on the physicochemical properties and structural variation of metal oxide-silica nanocomposites (Mn2O3-Fe2O3@SiO2) has been investigated. Based on the results, UV irradiation significantly affects the nanocomposite structure, where SiO2 network reconfiguration, change in surface OH group density, and surface area were observed. Erythromycin (ERY) has been chosen as a module pollutant to compare the performance of the pristine and UV-treated nanocomposites. The pristine nanocomposite had a high adsorption efficiency (99.47%) and photocatalytic activity (99.57%) at neutral pH for ERY in the first cycle, and this efficiency decreased significantly for the multiple cycles. However, different results have been observed for the UV-treated nanocomposite, where it retained its performance for ten consecutive cycles. This enhanced performance is attributed to the structural modifications after UV exposure, where increased surface area, pore volume, and OH group density resulted in an increased number of the possible mechanisms responsible for the adsorption/oxidation of ERY. Moreover, oxidation of adsorbed molecules by UV light after each cycle can also be another reason for enhanced removal. For the first time, the fate of ERY is studied using regenerated nanocomposites after the last cycle. LC/MS/MS results showed that ERY degraded in 20 min, and the produced reaction by-products were adsorbed by nanocomposites. This study could be a foundation research for the practical approaches for the regeneration of nanomaterials and the successful removal of organic pollutants from aquatic environments.

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Section: Xrdmentioning

confidence: 99%

Section: Proposed Mechanisms For Degradationmentioning

confidence: 99%

Effect of UV Irradiation on the Structural Variation of Metal Oxide-Silica Nanocomposites for Enhanced Removal of Erythromycin at Neutral pH

et al. 2022

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“…Erythromycin is a broad-spectrum macrolide antibiotic used to treat diseases such as diphtheria, pertussis, and bacillary angiomatosis [ 137 ]. The natural degradation of erythromycin is prolonged due to its stable structure, leading to increased erythromycin resistance among bacteria [ 138 ]. As erythromycin diffuses rapidly into most tissues of the human body, erythromycin pollution of environmental media poses a serious threat to human health, in addition to the ecosystem.…”

Section: Biosensor Applicationsmentioning

confidence: 99%

Capture-SELEX: Selection Strategy, Aptamer Identification, and Biosensing Application

2022

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Small-molecule contaminants, such as antibiotics, pesticides, and plasticizers, have emerged as one of the substances most detrimental to human health and the environment. Therefore, it is crucial to develop low-cost, user-friendly, and portable biosensors capable of rapidly detecting these contaminants. Antibodies have traditionally been used as biorecognition elements. However, aptamers have recently been applied as biorecognition elements in aptamer-based biosensors, also known as aptasensors. The systematic evolution of ligands by exponential enrichment (SELEX) is an in vitro technique used to generate aptamers that bind their targets with high affinity and specificity. Over the past decade, a modified SELEX method known as Capture-SELEX has been widely used to generate DNA or RNA aptamers that bind small molecules. In this review, we summarize the recent strategies used for Capture-SELEX, describe the methods commonly used for detecting and characterizing small-molecule–aptamer interactions, and discuss the development of aptamer-based biosensors for various applications. We also discuss the challenges of the Capture-SELEX platform and biosensor development and the possibilities for their future application.

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“…The Advanced oxidative processes (AOP) are characterized by the generation of potent oxidizing agents such as the radicals HO • , O 2 •− among others, that promote the oxidation of complex compounds in biodegradable products, such as organic acids, H 2 O, CO 2 , and inorganic ions, possibly less toxic than the original compounds thus leading to a total or partial mineralization of the contaminants ( Ashraf et al, 2021 ).…”

Section: Photomediated and Advanced Oxidative Processes For Removing Drugs From The Kit-covidmentioning

confidence: 99%

Photo-mediated and advanced oxidative processes applied for the treatment of effluents with drugs used for the treatment of early COVID-19: Review

Albornoz

Soroka

Silva

2021

Environmental Advances

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Recent trends in advanced oxidation process-based degradation of erythromycin: Pollution status, eco-toxicity and degradation mechanism in aquatic ecosystems

Cited by 50 publications

References 126 publications

Effect of UV Irradiation on the Structural Variation of Metal Oxide-Silica Nanocomposites for Enhanced Removal of Erythromycin at Neutral pH

Effect of UV Irradiation on the Structural Variation of Metal Oxide-Silica Nanocomposites for Enhanced Removal of Erythromycin at Neutral pH

Capture-SELEX: Selection Strategy, Aptamer Identification, and Biosensing Application

Photo-mediated and advanced oxidative processes applied for the treatment of effluents with drugs used for the treatment of early COVID-19: Review

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