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sulfamethoxazole, etc ; antibiotics; clay; electron transfer; oxidation; remediation; China; Show all 7 Subjects
Abstract:
... It has been documented that organic contaminants can be degraded by hydroxyl radicals (•OH) produced by the activation of H₂O₂ by Fe(II)-bearing clay. However, the interfacial electron transfer reactions between structural Fe(II) and H₂O₂ for •OH generation and its effects on contaminant remediation are unclear. In this study, we first investigated the relation between •OH generation sites and sul ...
sulfamethoxazole, etc ; chromium; decontamination; dyes; electron paramagnetic resonance spectroscopy; irradiation; light emitting diodes; pH; ultraviolet radiation; wastewater; wavelengths; Show all 11 Subjects
Abstract:
... Hexavalent chromium (Cr(VI)) was activated by ultraviolet-A light-emitting diode (UVA-LED), resulting in efficient removal of various pollutants, including dye, pharmaceuticals, and pesticides, with pseudo-first-order rate constants of 0.0610–0.159 min⁻¹. Comparatively, UVA-LED or Cr(VI) alone barely degraded selected pollutants. Both HO• and Cr(V) were produced in the UVA-LED/Cr(VI) system based ...
... A novel strain, Nitratireductor sp. GZWM139 capable of efficient removal of SMX was isolated from mariculture sewage, and Nitratireductor was reported to conduct the removal of antibiotics for the first time. Strain GZWM139 exhibited desirable adaptations to environmental factors with SMX removal efficiencies more than 90 % at temperatures of 28–38 °C, pH values of 4.5–8.5, salinities of 20–30 ‰, ...
... The impact of antibiotics on the environmental protection and sludge treatment fields has been widely studied. The recovery of hydrogen from waste activated sludge (WAS) has become an issue of great interest. Nevertheless, few studies have focused on the impact of antibiotics present in WAS on hydrogen production during dark anaerobic fermentation. To explore the mechanisms, sulfamethoxazole (SMX) ...
sulfamethoxazole, etc ; Desulfomicrobium; Geobacter; Rhodoplanes; activated carbon; antibiotic resistance; bioretention areas; databases; durability; microbial communities; nitrogen; phosphorus; prediction; total nitrogen; wastewater; China; Show all 16 Subjects
Abstract:
... To understand the long-term performance of bioretention systems under sulfamethoxazole (SMX) stress, an unplanted bioretention system (BRS) and two modified BRSs with coconut-shell activated carbon (CAC) and CAC/zero-valent-iron (Fe⁰) granules (CAC-BRS and Fe/CAC-BRS) were established. Both CAC-BRS and Fe/CAC-BRS significantly outperformed BRS in removing total nitrogen (TN) (CAC-BRS: 82.48%; Fe/C ...
... Cyanobacteria and green algae are the OECD recommended test organisms for environmental toxicity assessments of chemicals. Whether the differences in these two species' responses to the identical chemical affect the assessment outcomes is a question worth investigating. Firstly, we investigated the distinct resistance mechanisms of Synechococcus sp. (cyanobacteria) and R. subcapitata (green algae) ...
sulfamethoxazole, etc ; adsorption; crystallization; electron transfer; research; Show all 5 Subjects
Abstract:
... In this study, activation of peroxymonosulfate (PMS) by amorphous FeOOH to degrade sulfamethoxazole (SMX) was investigated. The amorphous FeOOH showed a better performance in the decomposition of PMS and the degradation of SMX than the crystallized α-FeOOH and β-FeOOH. The quenching experiments and EPR measurements suggested that the mechanism of PMS activation by amorphous FeOOH was mainly the su ...
sulfamethoxazole, etc ; antibiotics; electrochemistry; hazard characterization; humans; Show all 5 Subjects
Abstract:
... Sulfamethoxazole (SMX) forms the high harmfulness and causing negative health impacts to well-being human and environment that found to be major drastic concern. It is subsequently important to keep in track for monitoring of SMX through convenient detecting devices which include the requirement of being minimal expense and potential for on location environmental applications. Nanomaterials based ...
sulfamethoxazole, etc ; catalysts; catalytic activity; ozone; pH; Show all 5 Subjects
Abstract:
... In this work, a new type of catalyst CuCo₂O₄-GO was synthesized as a heterogeneous catalyst, and its control effect on bromate (BrO₃⁻)generation and sulfamethoxazole (SMX) degradation in O₃/PMS process was studied. When 100 mg/L CuCo₂O₄-GO was added to the reaction system, the BrO₃⁻ concentration generated was 0.25 μM at pH = 7.0, 100 μM PMS addition and 1.30 mg/min ozone injection after 30 min re ...
sulfamethoxazole, etc ; denitrification; mariculture; nitrification; nitrogen; technology; wastewater; Show all 7 Subjects
Abstract:
... This study investigated the removal of nitrogen and sulfamethoxazole (SMX), and the microbial communities in a partially saturated vertical flow constructed wetland (PS-VFCW) fed with synthetic mariculture wastewater operated at different saturated zone depths (SZDs), i.e. 51, 70, and 60 cm. Removal efficiencies were 99.8%-100.0% for COD, 34.1%-100.0% for NH₄⁺-N, 67.8%-97.3% for total inorganic ni ...
sulfamethoxazole, etc ; aniline; bioaccumulation; pollution; radioactivity; sulfadiazine; sulfamonomethoxine; Europe; Show all 8 Subjects
Abstract:
... BACKGROUND: Due to their widespread use, sulfonamide antibiotics (SAs) have become ubiquitous environmental contaminants and thus a cause of public concern. However, a complete understanding of the behavior of these pollutants in complex environmental systems has been hampered by the unavailability and high cost of isotopically labeled SAs. RESULTS: Using commercially available uniformly [¹⁴C]- an ...
sulfamethoxazole, etc ; adsorption; aluminum; aquatic environment; nickel; sulfates; wastewater; Show all 7 Subjects
Abstract:
... Sulfonamides have attracted special attention due to their widespread use and refractory nature in the aquatic environment. Heterogeneous catalytic peroxymonosulfate (PMS) activation for sulfonamide degradation has been demonstrated to be an encouraging strategy. Herein, ultrathin nickel aluminium layered double hydroxide (U–NiAl-LDH) was employed as an efficient peroxymonosulfate activator. The a ...
sulfamethoxazole, etc ; calcium peroxide; humic acids; hydrogen peroxide; oxidation; toxicity; Show all 6 Subjects
Abstract:
... Recently, the enhancing role of hydrogen peroxide (H₂O₂), a self-decay product of ferrate (Fe(VI)), on Fe(VI) reactivity has received increasing attention. In this study, we found that calcium peroxide (CaO₂) as a slow-releasing reagent of H₂O₂ could also enhance the Fe(VI) performance for removing sulfamethoxazole (SMX). Compared with sole Fe(VI), sole CaO₂ and Fe(VI)-H₂O₂ systems, the Fe(VI)-CaO ...
sulfamethoxazole, etc ; humic acids; olefin; oxidants; oxidation; pH; phenol; wastewater; Show all 8 Subjects
Abstract:
... In this study, we found that the introduction of Cu(II) (several μM, close to the concentration level of some real water/wastewater) in ferrate (Fe(VI)) oxidation can remarkably accelerate the abatement of various organic pollutants under slightly alkaline conditions. The results show that 5 μM sulfamethoxazole (SMX) can be completely degraded by Fe(VI) (50 μM) in the presence of 20 μM Cu(II) with ...
sulfamethoxazole, etc ; Japan; antibiotic resistance; broiler chickens; ceftiofur; oxytetracycline; serotypes; streptomycin; Show all 8 Subjects
Abstract:
... Ceftiofur, a third-generation cephalosporin antimicrobial, was used in Japanese hatcheries for many years before 2012. We continue to study Salmonella in broilers and their antimicrobial resistance. The current study aimed to express how the cessation of ceftiofur affects the antimicrobial resistance of Salmonella isolated from broiler chickens in Kagoshima Prefecture, Japan in 2017 and 2018. A to ...
sulfamethoxazole, etc ; analytical chemistry; automation; climate change; honey; laws and regulations; Show all 6 Subjects
Abstract:
... Increased use of environmentally friendly practices has become a trend in science because of the current awareness regarding climate change and related issues. Similarly for analytical chemistry, considering the development of greener methods for reducing the use of reagents and samples and also toxic waste generation. To meet such goals, automation, and miniaturisation of sample preparation—a wel ...
sulfamethoxazole, etc ; bismuth; electric current; irradiation; photocatalysis; photocatalysts; photoluminescence; photolysis; pollution; Show all 9 Subjects
Abstract:
... The Z-scheme heterojunction has received widespread attention due to it can effectively improve the photocatalytic activity of photocatalytic materials. In this paper, a p-p Z-scheme hererojunction composed of bismuth oxybromide and oxygen-rich bismuth oxybromide was synthesized via facile one-step solvothermal method. Based on the characterization results, we demonstrated that the BiOBr/Bᵢ₁₂O₁₇Br ...
sulfamethoxazole, etc ; activated carbon; biofouling; catalysts; cathodes; electrochemistry; fuels; salinity; wastewater; Show all 9 Subjects
Abstract:
... In this study, activated carbon (AC) and Pt/C cathode microbial fuel cells (MFCs) were constructed respectively to explore the electrochemical performance in different salinity conditions, and further investigation on sulfamethoxazole (SMX) degradation was tested in high salinity. The results showed that the maximum power density of 348 mW/m² was obtained in MFC-AC (MFC reactor with AC as cathode ...
sulfamethoxazole, etc ; Arbacia lixula; antibiotics; aquatic environment; embryogenesis; oocytes; toxicity; wastewater; Show all 8 Subjects
Abstract:
... To date, drugs released into the aquatic environment are a real problem, and among antibiotics, sulfamethoxazole is the one most widely found in wastewater; thus, the evaluation of its toxicity on marine organisms is very important. This study, for the first time, investigates the in vitro effects of 4 concentrations of sulfamethoxazole (0.05 mg/L, 0.5 mg/L, 5 mg/L, 50 mg/L) on the fertilization a ...
sulfamethoxazole, etc ; antibiotics; biphenyl; chemical species; chromatography; humans; metabolites; spectrometers; trimethoprim; Show all 9 Subjects
Abstract:
... The dual agent antibiotic, trimethoprim/sulfamethoxazole (TMP-SMX), has been prescribed to treat or prevent infections for over 50 years. However, there are no published validated analytical methods for the measurement of TMP metabolites in humans. We developed methodology enabling reliable quantification of TMP and 5 metabolites in human plasma. Chromatographic separation was achieved in less tha ...