Efficient removal of the pharmaceutical pollutants included in the EU Watch List (Decision 2015/495) by modified magnetite/H2O2

Serrano, Estefania; Muñoz, Macarena; Pedro, Zahara M. de; Casas, José A.

doi:10.1016/j.cej.2018.10.202

Cited by 19 publications

(9 citation statements)

References 52 publications

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“…% H 2 in N 2 ) for 3 h at 400 ºC. A detailed characterization of the catalyst, including XRD, textural properties, and magnetic measurements, can be found elsewhere (Álvarez-Torrellas et al, 2018;Serrano et al, 2018). Summarizing, the iron content was 73% wt., the specific surface area 7 m 2 g -1 and the particles showed a mean size of 0.2 m.…”

Section: Magnetite Modification and Characterizationmentioning

confidence: 99%

Degradation of widespread cyanotoxins with high impact in drinking water (microcystins, cylindrospermopsin, anatoxin-a and saxitoxin) by CWPO

et al. 2019

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Section: Magnetite Modification and Characterizationmentioning

confidence: 99%

Degradation of widespread cyanotoxins with high impact in drinking water (microcystins, cylindrospermopsin, anatoxin-a and saxitoxin) by CWPO

et al. 2019

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“…The powdered Fe3O4 catalyst was fully characterized in previous work [21]. Briefly, the iron content was close to the theoretical one for pure magnetite (73 wt.%).…”

Section: Catalyst Characterizationmentioning

confidence: 53%

Catalytic Wet Peroxide Oxidation of Cylindrospermopsin over Magnetite in a Continuous Fixed-Bed Reactor

et al. 2020

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The development of cost-efficient and environmentally friendly technologies for the removal of cyanotoxins from water is crucial, given the increasingly frequent appearance of toxic cyanobacterial blooms. In this work, the application of catalytic wet peroxide oxidation (CWPO) promoted by natural magnetite for the removal of the highly toxic cyanotoxin cylindrospermopsin (CYN) has been investigated. A fixed-bed reactor packed with magnetite powder and granules was used to treat a continuous flow of CYN-bearing water. Experiments were carried out under ambient conditions and circumneutral pH (pH0 = 5). The effect of the main variables of the process, viz. magnetite load (8–14 g), feed flow rate (0.1–0.25 mL min−1), H2O2 dose (0.5–8 mg L−1) and initial CYN concentration (25–100 mg L−1), were systematically analyzed. CYN conversion values and kinetic constants were calculated to evaluate the feasibility of the catalytic system. The process was highly effective in the removal of the cyanotoxin, achieving up to 80% CYN conversion under optimized conditions (flow rate = 0.2 mL min−1, [H2O2]0 = 5 mg L−1, WFe3O4 = 14 g, pH0 = 5, T = 25 °C). It also showed reasonable activity (~55% CYN conversion) in two real samples (pond and river water). The decay on CYN conversion in these cases was mainly due to the scavenging of hydroxyl radicals by the co-existing species present in the matrices. Remarkably, the catalytic system showed high stability with limited iron leaching (the iron leached at the end of the experiments represented less than 0.2 wt.% of the catalyst’s initial iron content) in all cases. Its stability was further confirmed in a long-term continuous experiment (60 h time on stream). Furthermore, the magnetite granules at the top layer of the packed bed avoided the loss of magnetite powder from the reactor, confirming the suitability of the system for continuous long-term application.

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“…To develop low‐cost catalyst, Serrano, Munoz, Pedro, and Casas (2019) studied the effect of catalytic system based on modified natural magnetite (Fe 3 O 4 ‐R400) and H 2 O 2 on the removal of all the pharmaceuticals in the EU Watch List (estrone, 17‐beta‐estradiol, 17‐alpha‐ethinylestradiol, azithromycin, clarithromycin, erythromycin, and diclofenac). The experimental parameters were set as follows: treatment temperature 17–50°C, initial pharmaceutical concentration 1,000 μg/L, and initial pH value of system 5.…”

Section: Catalysis (Photolysis/photocatalysis Fenton Processes)mentioning

confidence: 99%

Emerging pollutants—Part II: Treatment

Liu

Zhang

Chang

2020

Water Environment Research

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Emerging pollutants (EPs) refer to a class of pollutants, which are emerging in the environment or recently attracted attention. EPs mainly include pharmaceutical and personal care products (PPCPs), endocrine-disrupting chemicals (EDCs), and antibiotic resistance genes (ARGs). EPs have potential threats to human health and ecological environment. In recent years, the continuous detections of EPs in surface and ground water have brought huge challenges to water treatment and also made the treatment of EPs become an international research hotspot. This paper summarizes some research results on EPs treatment published in 2019. This paper may be helpful to understand the current situations and development trends of EP treatment technologies.

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Efficient removal of the pharmaceutical pollutants included in the EU Watch List (Decision 2015/495) by modified magnetite/H2O2

Cited by 19 publications

References 52 publications

Degradation of widespread cyanotoxins with high impact in drinking water (microcystins, cylindrospermopsin, anatoxin-a and saxitoxin) by CWPO

Degradation of widespread cyanotoxins with high impact in drinking water (microcystins, cylindrospermopsin, anatoxin-a and saxitoxin) by CWPO

Catalytic Wet Peroxide Oxidation of Cylindrospermopsin over Magnetite in a Continuous Fixed-Bed Reactor

Emerging pollutants—Part II: Treatment

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