RSC Advances
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2025
·Vol. 15
·期 15
·11503-11510
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IF 4.6
Ping Li,Xiaolin Yue,Anhong Li,Can Cui,Lan Wang,Wenyuan Tan
Cobalt 2-methylimidazole (ZIF-67) has been broadly explored for its applications in the treatment of antibiotics in wastewater. However, ZIF-67 in powder form is difficult to recover. In the study, ZIF-67 and Polyvinylidene Fluoride (PVDF) were blended via electrospinning to prepare ZIF-67/PVDF membrane for adsorption of ciprofloxacin (CIP). The ZIF-67/PVDF membrane demonstrated outstanding adsorption efficiency for CIP, with a maximum adsorption capability of 4087.5 μg cm−2. The adsorption performance of ZIF-67/PVDF remains stable across a wide pH range and is unaffected by ionic interference. The ZIF-67/PVDF adsorbent follows pseudo-second-order kinetics and the Langmuir model. Furthermore, thermodynamic research indicates the adsorption of CIP is a spontaneous and exothermic process. It is proposed that the adsorption mechanism of CIP onto ZIF-67/PVDF involves electrostatic interactions, hydrogen bonding, π–π interactions, coordination bonding, and hydrophobic interactions.
研究领域:
环境科学
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材料科学
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水处理技术
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DOI
PubMed
高影响因子
International Journal of Environmental Science and Technology
·
2016
·Vol. 13
·期 10
·2449-2458
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IF 2.344
Shang J. G.,Kong X. R.,He L. L.,Li W. H.,Liao Q. J. H.
Thermally carbonization biochar produced from a traditional Chinese herbal medicine waste ( Astragalus mongholicus residue) was investigated for its performance in ciprofloxacin adsorption. Batch sorption experiments were conducted, and scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and Brunauer–Emmett–Teller surface area analyses were employed to characterize the biochar. The results demonstrated that thermal activation process improves the adsorbent characteristics. Biochar produced at 800 °C had the best adsorption capacity, a better pore structure and the largest surface areas. The adsorption process fit well to a pseudo-second-order kinetics model. The adsorption isothermal model results revealed that the adsorption process of ciprofloxacin is described better by the Freundlich isotherm and the type of adsorption is a chemical process. The maximum adsorption of ciprofloxacin occurred at pH 7. The present research demonstrated that A. mongholicus biochar might be an attractive and cost-effective adsorbent with good adsorption performance for removing ciprofloxacin from water solution.
研究领域:
环境科学
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药用植物学
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DOI
高影响因子
CHEMOSPHERE
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2022
·
IF 8.943
Jing Ma,Fu Chen,Yanfeng Zhu,Xiaoxiao Li,Haochen Yu,Yan Sun
The toxicological impacts of microplastics (MPs) and antibiotics in the soil environment have gradually drawn widespread attention, while little research has focused on the combined pollution of MPs and antibiotics on plants. In this work, a 21-day hydroponic study was conducted to test the hypothesis that polystyrene MPs (0.1, 1 and 10 μm particle sizes, 50 mg/L) and ciprofloxacin (CIP) (1.0 and 5.0 mg/L) had a joint toxicity to wheat seedlings and they could be absorbed by wheat. Plant samples were taken for analyses after 21 days of exposure. The results showed that 0.1 and 1 μm MP could enter wheat roots but only the former could translocate to aerial parts. Moreover, 0.1 μm MP showed a greater toxicity effect than 1 μm MP, whereas 10 μm MP exhibited little toxicity on wheat. The dosing of 0.1 μm MP significantly increased the toxic effects of CIP to wheat. Compared to the control treatment (without MPs and CIP), 0.1 μm MPs-5.0 mg/L CIP treatment resulted in inhibition of root length and weight by 60.1% and 44.3%, respectively, while the contents of chlorophyll a and chlorophyll b decreased by 36.3% and 44.6%, respectively. The presence of CIP (5.0 mg/L) potentially aggravated the combined toxicity. The exposure of 0.1 μm MP significantly reduced root superoxide distumase activity but increased root malondialdehyde content. The amount of CIP in wheat tissues carried by MPs was negligible compared with the uptake quantity of CIP by wheat.
研究领域:
环境科学
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植物学
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DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
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2023
·
IF 8.3
Yue Wang,Weihao Ning,Shengnan Li,Changfei Gao,Rong Cui,Wanqian Guo,Jo-Shu Chang,Shih-Hsin Ho
The wide use of antibiotics in aquaculture has triggered global ecological security issue. Microalgal bioremediation is a promising strategy for antibiotics elimination due to carbon recovery, detoxification and various ecological advantages. However, a lack of understanding with respect to the corresponding regulation mechanism towards antibiotic stress may limit its practical applicability. The microalga Scenedesmus obliquus was shown to be capable of effectively eliminating ciprofloxacin (CIP), which is a common antibiotic used in aquaculture. However, the corresponding transcriptional alterations require further investigation and verification at the metabolomic level. Thus, this study uncovered the metabolomic profiles and detailed toxic and defense mechanisms towards CIP in S. obliquus using untargeted metabolomics. The enhanced oligosaccharide/polyol/lipid transport, up-regulation of carbohydrate and arachidonic acid metabolic pathways and increased energy production via EMP metabolism were observed as defense mechanisms of microalgal cells to xenobiotic CIP. The toxic metabolic responses included: (1) down-regulation of parts of mineral and organic transporters; (2) electrons competition between antibiotic and NAD during intracellular CIP degradation; and (3) suppressed expression of the hem gene in chlorophyll biosynthesis. This study describes the metabolic profile of microalgae during CIP elimination and reveals the key pathways from the perspective of metabolism, thereby providing information on the precise regulation of antibiotic bioremediation via microalgae.
研究领域:
环境科学
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分子生物学
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DOI
PubMed
高影响因子
Environmental Technology & Innovation
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2025
·
IF 7.1
Yanyan Liu,Bangxiao Zheng,Min Zhao,Feng Zheng,Xiaoqing Chen,Lei Wang
The effectiveness of ultraviolet advanced oxidation processes (UV-AOPs) was influenced by the prevalence of dissolved organic matter (DOM) in natural water bodies. This study investigated the impact of humic acid (HA), fulvic acid (FA), and extracellular organic matter (EOM) on the degradation of Ciprofloxacin (CIP) by UV 222 /Sodium Percarbonate (UV 222 /SPC) and UV 222 . The results demonstrated that all three types of DOMs suppressed CIP degradation in UV 222 /SPC, with EOM exhibiting stronger inhibitory effects than HA and FA. This suppression primarily arose from DOM's light-shielding properties and scavenging of hydroxyl radicals (•OH) and carbonate radicals (CO₃•⁻), which outweighed the compensatory effects of DOM-photosensitized reactive species. In contrast, EOM enhanced direct UV 222 photolysis of CIP due to its high absorption coefficient at 222 nm, which promoted the generation of excited triplet state EOM ( 3 EOM ⁎ ) and singlet oxygen ( 1 O 2 ) via photosensitization. These reactive species compensated for EOM’s light-shielding effect, enabling efficient indirect photodegradation of CIP. The organic matter in EOM rather than NO 3 - promoted the degradation of CIP in UV 222 . The fluorescence spectra and dissolved organic carbon (DOC) changes of DOM were analyzed in depth. In addition, both CO₃•⁻ and •OH contribute to CIP degradation in UV 222 /SPC, with the second-order rate constant of CO₃•⁻ with CIP measured at 4.79 × 10⁸ M⁻¹ s⁻¹. UV 222 /SPC showed lower energy consumption than UV 254 /SPC in treating the real water sample. This study deepens the understanding of the impact of DOM in UV 222 water purification.
研究领域:
环境科学
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水处理工程
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DOI
高影响因子
RSC Advances
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2024
·Vol. 14
·期 26
·18432-18443
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IF 3.9
Jiao Wang,Hemu Pi,Panchao Zhao,Na Zhou
The presence of methyl orange (MO) and ciprofloxacin (CIP) in wastewater poses a serious threat to the environment and human health. Titanium dioxide nanoparticles (TiO2 NPs) are widely studied as photocatalysts for wastewater treatment. However, TiO2 NPs have the drawbacks of high energy required for activation, fast electron–hole pair recombination and difficulty in recovering from water. To overcome these problems, europium decorated titanium dioxide/poly(vinylidene fluoride) (Eu–TiO2/PVDF) membranes were successful prepared in this work by combining the modified sol–gel method and the immersion phase inversion method. The Eu–TiO2/PVDF membranes obtained with the increase of Eu–TiO2 NPs content during the preparation process were named M1, M2 and M3, respectively. The pure PVDF membrane without the addition of Eu–TiO2 NPs was named M0, which was prepared by the immersion phase inversion method and served as a reference. The prepared Eu–TiO2/PVDF membranes could not only adsorb MO, but also degrade CIP under visible-light irradiation. Moreover, the Eu–TiO2/PVDF membranes exhibited adsorption–photocatalytic activity towards a mixture of MO and CIP under visible-light irradiation. Last but not the least, the Eu–TiO2/PVDF membranes exhibited excellent recyclability and reusability, opening the avenue for a possible use of these membranes in sewage-treatment plants.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
Processes
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2022
·Vol. 10
·期 1
·124
·
IF 3.352
Xiao Ma,Zhenjun Wang
Ciprofloxacin (CIP), as a common antibiotic used in human clinical and livestock farming, is discharged into natural water bodies and its concentration has increased in the last years. Its stable chemical structure is difficult to remove by conventional techniques. Residual ciprofloxacin in the environment has become an emerging micropollutant that promotes the generation of resistance genes of bacteria and endangers ecosystem balance and human health. Removal of ciprofloxacin from water by the system of ultrasound/electric field/sodium persulfate (US/E/PS) was investigated. Firstly, CIP degradation affects by different oxidation methods, such as ultrasonic oxidation, electro-oxidation, and persulfate oxidation, and their four combined oxidation methods (ultrasound-activated persulfate oxidation, electro-activated persulfate oxidation, ultrasound-enhanced electro-oxidation, and ultrasound-enhanced electro-activated persulfate oxidation), on the target contaminants were compared. Secondly, the influences of parameters on the CIP degradation by an ultrasound-enhanced electro-activation-persulfate reaction system were investigated. Thirdly, the possible free radical species in the ultrasound-enhanced electro-activation-sulfate reaction system were identified and the dominant free radical species in the system were analyzed. Finally, the samples of CIP in the US/E/PS system were tested by liquid mass spectrometry, and the possible intermediate products and degradation path were speculated. The results indicate that the US/E/PS system is of great potential application value in the removal of organic pollution and environmental purification.Keywords:ultrasound;antimicrobial drug;degradation;ciprofloxacin
研究领域:
环境科学
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化学工程
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2024
·Vol. 48
·期 20
·9185-9195
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IF 2.7
Shikai Xue,Dongying Zhu,Qing Zuo,Shuangfeng Yang,Haiyan Wang,Qiujun Lu,Guoxing Yin,Guihua Ruan,Fuyou Du
A novel MIL-101(Fe)/ZnCrZr-LBMO heterojunction was successfully constructed and used for the removal of ciprofloxacin (CIP) in this work. The MIL-101(Fe)/ZnCrZr-LBMO composite exhibited significantly enhanced photocatalytic degradation activity, with reaction rates approximately 3.4 and 3.1 times faster than those observed with pristine MIL-101(Fe) and ZnCrZr-LBMO, respectively. The effect of different amounts of ZnCrZr-LBMO, sample pH, CIP concentration, inorganic cations, and anions on CIP removal was investigated, and the possible intermediates and degradation pathways of CIP were speculated. The·O2− radicals dominated CIP degradation, with minor contributions from 1O2, h+, and ·OH radicals. The composite exhibited high removal rates for CIP (94.7%), ofloxacin (86.8%), and tetracycline (96.3%), respectively, within 60 min of light irradiation, and excellent reusability, retaining over 85.1% CIP degradation rate after five cycles. Our work provides a new reference to construct highly efficient and easily recyclable MIL-101(Fe)/ZnCrZr-LBMO photocatalysts for the removal of antibiotic pollutants, promising advancements in real water treatment applications.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2021
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IF 6.165
Yong Chen,Jiawei Zhang,Hui Xu
The addition of second transition metal element has been proven to be one of the most efficient methods to enhance removal efficiency of nano zero-valent iron (nZVI). Here, activated carbon-supported nano zero-valent iron/nickel bimetal composite (AC-nZVI/Ni) as efficient adsorbents to remove ciprofloxacin (CIP) in water is reported. The dispersity of nZVI is dramatically improved by AC. Mass ratio of iron to nickel (50:1) endows AC-nZVI/Ni excellent removal efficiency (98.5% at 120 min), which can be achieved in a wide range of pH. The investigations on degradation kinetics show kinetic behavior is affected by Ni element because the reaction order is changed from pseudo-first-order (AC-nZVI) to pseudo-second-order (AC-nZVI/Ni). At the same time the apparent active energy (Ea) is decreased from 61.06 to 47.11 kJ/mol, which is beneficial for rapid removal of CIP. With the help of AC, the oxidation resistance of AC-nZVI/Ni is the highest one among experimental samples in 100 days, suggesting a good long-term stability. Eventually, three possible degradation paths and ten degradation products of CIP are proposed depending on the analysis of Liquid chromatography-mass spectrometry (LC-MS). These findings may provide a new perspective on evaluating the roles of second metal and supported material to enhance the removal efficiency of nZVI, which is helpful to tailor and create high-efficiency adsorbent material based on nZVI for wastewater fields.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
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2022
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IF 7.392
Huan Yang,Jun Li,Shuai Hu,Yi Liu,Cheng Peng,Chengfei Deng,Qinglin Chen,Tianding Hu,Shaoyun Shan,Yunfei Zhi,Hongying Su,Lihong Jiang
It’s extremely urgent to remove ciprofloxacin (CIP) pollutant from wastewater since the extensively used CIP is difficult to be degraded in natural environment, seriously threating the ecological environment and human health. Herein, a series of Fe-doped zeolitic imidazolate framework-8 (Fe-ZIF-8) adsorbents were fabricated by doping Fe ion into the ZIF-8. Systematic adsorption experiments were conducted to evaluate the possibility of Fe-ZIF-8 in removing CIP from aqueous solutions. Accordingly, the maximum adsorption capacity of Fe-ZIF-8 for CIP could reach an ultrahigh value of 1484 mg g −1 , which is higher than that of any reported adsorbents. The CIP adsorption on Fe-ZIF-8 followed pseudo-second-order kinetics model and fitted well with Freundlich isotherm model, indicating the presence of the chemosorption and multilayer adsorption. The outstanding adsorption capacity of CIP could be ascribed to the high surface area and large pore volume of Fe-ZIF-8 as well as the synergetic effects including surface complexation, electrostatic attraction, π-π and hydrogen bonding interactions. These unrivalled traits certify the great potential of Fe-ZIF-8 in practical application.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Dan Yang,Meng Du,Zia-ud Din,Shikui Yang,Lei Chen,Jie Cai,Jie Pang,Xi Chen,Wenping Ding
The Gum Ghatti (GG)/Konjac Glucomannan (KGM)/zeolitic imidazolate framework-8 (ZIF-8) composite aerogels (GKZ) were synthesized by the sol-gel method and the vacuum freeze-drying method for effective removal of ciprofloxacin (CIP) from contaminated water. The results showed that the addition of different concentrations (0, 0.4, 0.6, 0.8 wt%) of GG could promote homogeneity but weakened the molecular interaction of the aerogel system without water. Remarkably, the ZIF-8 maintained the crystal structure, as well as its dispersion on the surface of aerogel, was significantly improved. Additionally, it was also found that the incorporation of moderate GG was favored regarding CIP adsorption, and GKZ with 0.6 % GG (GKZ0.6) exhibited the highest adsorption capability for CIP around 1035.4 mg/g. Besides, the effects of various ions, ionic strength , and pH on CIP adsorption were also investigated, which provided the reference for guiding the utilization of GKZ0.6. Furthermore, at fewer cycles, the adsorption efficiency of GKZ0.6 on CIP showed less loss. These features revealed that the GKZ composite aerogels might be a promising adsorbent for CIP removal from water.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2023
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IF 3.8
Hao Zhang,Pengfei Zhang,Zhiliang Liu,Chunfang Du
In this study, various silver phosphomolybdates ( x - y - z -AgPMo) with oxygen vacancies were successfully prepared through H 2 calcination and subsequent chemical precipitation and used for the adsorption of ciprofloxacin (CIP) in water. The microstructures of x - y - z -AgPMo were analyzed by a series of characterization methods. The effects of calcination time, calcination temperature, hydrogen flow rate, and external adsorption conditions on the adsorption performance were investigated. The results showed that the adsorption performance of 1–0.1–250-AgPMo toward CIP could reach 91% within 20 min with a maximum adsorption capacity of 45.5 mg∙ g − 1 , which was about 1.7 times as that of silver phosphomolybdate (Y-AgPMo) without H 2 calcination. The improved adsorption performance of 1–0.1–250-AgPMo was mainly attributed to the presence of oxygen vacancies, which induced more negative surface charges and larger specific surface area in 1–0.1–250-AgPMo. This work provided an excellent adsorbent for CIP removal and forcefully confirmed the important role of oxygen vacancies in the adsorption process.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）