Prompt removal of antibiotic by adsorption/electro-Fenton degradation using an iron-doped perlite as heterogeneous catalyst

Puga, Antón; Rosales, Emílio; Pazos, Marta; Sanromán, M.A.

doi:10.1016/j.psep.2020.07.021

Cited by 36 publications

(17 citation statements)

References 57 publications

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“…Fe 2 O 3 -modified kaolin was proposed by Özcan et al [31] as a promising alternative for enoxacin degradation from aqueous environments. The use of clays such as kaolin and perlite has been widely applied primarily as catalyst supports due to their low cost, high adsorption ability and eco-friendly structure [32]. Carbonaceous materials have also been recently used as immobilisation substrates to enhance catalytic activity, stability and reusability.…”

Section: Heterogeneous Catalystsmentioning

confidence: 99%

“…The degradation of sulfamethizole was undertaken by Puga et al [32], who used electro-Fenton process in ultrapure water and real treated wastewater spiked with the pollutant (final concentration around 25 mg/L) under a continuous flow-system. The authors assumed a first-order kinetic model for mineralisation data reporting kinetic rate constants around 0.27 and 0.15 1/h for ultrapure and real water, respectively, demonstrating the challenge of working with real effluent.…”

Section: Antibioticsmentioning

confidence: 99%

“…[Fe (OH)] 2+ + hν → Fe 2+ + • OH (32) Fe(OOCR) 2+ + hν → Fe 2+ + CO2 + R • (33) The majority of research into PEF has been carried out under acidic conditions, with only a small number of studies investigating the potential application at circumneutral pH. Ye et al [48] described the performance of an Fe-based 2D metal-organic framework (MOF) catalyst for the removal of bezafibrate in sulphate-based medium at pH 5.5 using a single-compartment glass cell upon Xe lamp irradiation, reporting 92% removal-an increase in removal vs. the control experiments.…”

Section: Photoelectro-fenton Processmentioning

confidence: 99%

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Heterogeneous Electro-Fenton as “Green” Technology for Pharmaceutical Removal: A Review

et al. 2021

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The presence of pharmaceutical products in the water cycle may cause harmful effects such as morphological, metabolic and sex alterations in aquatic organisms and the selection/development of organisms resistant to antimicrobial agents. The compounds’ stability and persistent character hinder their elimination by conventional physico-chemical and biological treatments and thus, the development of new water purification technologies has drawn great attention from academic and industrial researchers. Recently, the electro-Fenton process has been demonstrated to be a viable alternative for the removal of these hazardous, recalcitrant compounds. This process occurs under the action of a suitable catalyst, with the majority of current scientific research focused on heterogeneous systems. A significant area of research centres working on the development of an appropriate catalyst able to overcome the operating limitations associated with the homogeneous process is concerned with the short service life and difficulty in the separation/recovery of the catalyst from polluted water. This review highlights a present trend in the use of different materials as electro-Fenton catalysts for pharmaceutical compound removal from aquatic environments. The main challenges facing these technologies revolve around the enhancement of performance, stability for long-term use, life-cycle analysis considerations and cost-effectiveness. Although treatment efficiency has improved significantly, ongoing research efforts need to deliver economic viability at a larger scale due to the high operating costs, primarily related to energy consumption.

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Section: Heterogeneous Catalystsmentioning

confidence: 99%

Section: Antibioticsmentioning

confidence: 99%

Section: Photoelectro-fenton Processmentioning

confidence: 99%

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Heterogeneous Electro-Fenton as “Green” Technology for Pharmaceutical Removal: A Review

et al. 2021

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“…Han 等 [65] 制备了富含醌基的碳材料，发现其具有很高的双电子 ORR 选择性和活性，H2O2 产率高达 97.8% (0.75 V vs. RHE)。图 6 不同碳纳米管和炭黑比例石墨毡电生 H2O2 的产率及能耗：电流密度 mA•cm -2 ， Na2SO4 浓度 0.05 mol•L -1 ，pH 7 [55] Figure 6 Dependence of CNT to CB ratio on the production of H2O2: Current density = 20 mA•cm −2 , Concentration of Na2SO4 = 0.05 mol•L -1 and pH = [55] . [66][67][68][69] 。此外，非均相电芬顿反应还可以解决铁泥的生成和电解液 pH 有效范围窄的问题 [70,71] 。催化剂物理化学性质的改进，如减小孔径和增加比表面积等，还可通过纳米颗粒负载实现。其中，负载磁性纳米颗粒能够简化催化剂与反应介质的分离过程以便于重复使用。因此，新兴纳米颗粒在碳基材料上的负载可以促进非均相催化剂在电芬顿体系中的应用 [72] 。金属氧化物与碳材料表面的 C 会发生一系列氧化还原反应，从而产生丰富的氧空位和碳缺陷。Lian 等 [73] Figure 7 Mechanism of synergetic enhancement of heterogeneous electro-Fenton [75] . 由于负载在碳基材料上的含铁颗粒通常表现出一般的非均相电芬顿活性和较差的稳定性，同时还具有较差的耐酸腐蚀性和载体粘合性。近年来，单原子催化剂(SACs)由于金属原子的最大原子利用率而备受关注，它继承了均相催化剂和非均相催化剂的优点 [77] 。如基于单原子 Co [78] 、 Mo [79] 或 Fe [80,81] 的 [82] [33] ；(c)不同 pH 条件下环丙沙星降解效果 [92] Figure 8 Degradation of pollutants using carbonaceous materials as the cathode of EF: (a) Removal TOC of metalaxyl with different cathodes [86] ; (b) Effect of applied potentials on the removal of diuron [33] ; (c) Effect of solution pH on the removal of ciprofloxacin [92] .…”

Section: Figureunclassified

Research progress of carbon-based materials for electro-Fenton degradation of pollutants

Shen¹,

Yang²,

Zhu³

et al. 2021

Sci. Sin.-Chim

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Electro-Fenton process is one of the simple and effective methods for the treatment of organic pollutants in water. Carbon-based material serves as a robust cathode for in-situ formation of H2O2 via the two-electron O2 reduction reaction. With the help of Electro-Fenton catalysts, the generated H2O2 decomposed into strong oxidizing hydroxyl radicals for efficient mineralization of organic pollutants. Based on the analysis of the main Electro-Fenton processes on carbon-based materials, this review systematically summarizes the modification of various carbon-based electrode in an attempt to enhance O2 mass transfer and Fenton reaction. Moreover, the practical application and economic cost of carbon-based electrode in Electro-Fenton degradation of organic pollutants are described. The current development trend of carbon-based electrode materials and foreseeable future research direction in the field of Electro-Fenton pollution control are pointed out at the end.

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“…These results confirm that biochar produced in the laboratory can adsorb organic pollutants at a similar level to commercial activated carbon. As an additional advantage, the regeneration of biochar can be easily carried out through different treatments (Figure 3), such as microwave irradiation, thermal or chemical treatment [91][92][93], including by extraction with organic solvents or by direct degradation on the biochar surface using advanced oxidation processes [94][95][96].…”

Section: Biochar Adsorption Of Emerging Contaminantsmentioning

confidence: 99%

Unravelling the Environmental Application of Biochar as Low-Cost Biosorbent: A Review

et al. 2020

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In this age, a key target for enhancing the competitiveness of the chemical, environmental and biotechnology industries is to manufacture high-value products more efficiently and especially with significantly reduced environmental impact. Under this premise, the conversion of biomass waste to a high-value added product, biochar, is an interesting approach under the circular economy principles. Thus, the improvements in the biochar production and its new and innovative uses are hot points of interest, which are the focus of vast efforts of the scientific community. Biochar has been recognized as a material of great potential, and its use as an adsorbent is becoming a reliable strategy for the removal of pollutants of different streams, according to its high adsorption capacity and potential to eliminate recalcitrant compounds. In this review, a succinct overview of current actions developed to improve the adsorption capability of biochar, mainly of heavy metal and organic pollutants (dyes, pharmaceuticals and personal care products), is summarized and discussed, and the principal adsorption mechanisms are described. The feedstock and the production procedure are revealed as key factors that provide the appropriate physicochemical characteristics for the good performance of biochar as an adsorbent. In addition, the modification of the biochar by the different described approaches proved their feasibility and became a good strategy for the design of selective adsorbents. In the last part of this review, the novel prospects in the regeneration of the biochar are presented in order to achieve a clean technology for alleviating the water pollution challenge.

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Prompt removal of antibiotic by adsorption/electro-Fenton degradation using an iron-doped perlite as heterogeneous catalyst

Cited by 36 publications

References 57 publications

Heterogeneous Electro-Fenton as “Green” Technology for Pharmaceutical Removal: A Review

Heterogeneous Electro-Fenton as “Green” Technology for Pharmaceutical Removal: A Review

Research progress of carbon-based materials for electro-Fenton degradation of pollutants

Unravelling the Environmental Application of Biochar as Low-Cost Biosorbent: A Review

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