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  • 1
    In: Journal of Environmental Management, Elsevier BV, Vol. 195 ( 2017-06), p. 140-147
    Type of Medium: Online Resource
    ISSN: 0301-4797
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2017
    detail.hit.zdb_id: 1469206-5
    SSG: 12
    SSG: 14
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  • 2
    In: Catalysis Today, Elsevier BV, Vol. 280 ( 2017-02), p. 139-148
    Type of Medium: Online Resource
    ISSN: 0920-5861
    RVK:
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2017
    detail.hit.zdb_id: 2012626-8
    detail.hit.zdb_id: 56797-8
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  • 3
    In: Journal of Chemical Technology & Biotechnology, Wiley, Vol. 89, No. 6 ( 2014-06), p. 814-818
    Abstract: Selective serotonin reuptake inhibitor sertraline is found to be one of the most persistent pharmaceutical drugs and it has been detected in effluents from wastewater treatment plants. This work evaluates the feasibility of homogeneous solar photo‐Fenton oxidation for treating aqueous solutions containing sertraline. RESULTS The influence of iron and H 2 O 2 dosages was studied in order to optimize the reagents consumption. The beneficial role of simulated solar irradiation was noticeable and sertraline was readily oxidized; TOC removal up to 90% was achieved at a hydrogen peroxide dose as low as 40% of the stoichiometric amount for mineralization. Dechlorination was the first step of the proposed reaction pathway giving rise to the formation of by‐products of much lower toxicity. CONCLUSIONS Solar simulated photo‐Fenton allowed reduction of the doses of iron and H 2 O 2 needed, and therefore the main operating cost associated with this process, without compromising the quality of the effluent in terms of ecotoxicity. © 2014 Society of Chemical Industry.
    Type of Medium: Online Resource
    ISSN: 0268-2575 , 1097-4660
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2014
    detail.hit.zdb_id: 1479465-2
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  • 4
    Online Resource
    Online Resource
    Wiley ; 2019
    In:  Journal of Chemical Technology & Biotechnology Vol. 94, No. 7 ( 2019-07), p. 2123-2130
    In: Journal of Chemical Technology & Biotechnology, Wiley, Vol. 94, No. 7 ( 2019-07), p. 2123-2130
    Abstract: Pathogenic microorganisms at the effluents of treatment plants entail a potential risk to public health. Enteric viruses such as adenoviruses (AdVs) and enteroviruses (EVs) are responsible for many waterborne diseases. Wastewater treatment methods eliminate successfully the load of indicators but other pathogens such as viruses have been detected in high concentrations at the effluents of wastewater plants. In this perspective, two constructed wetlands (CWs) systems (S1 and S2) were employed and fed with primary wastewater. S1 consists of a free water surface (FWS) wetland and a horizontal subsurface flow (HSSF) wetland working in series, while S2 consists only of the HSSF. Also, both systems included a sand filter (SF) after the HSSF. RESULTS Results showed that these low‐cost systems are capable of eliminating effectively the bacterial indictors (total coliforms, Escherichia coli , Enterococci) achieving removal rates of almost 99% for S1 (3.2–4 Log units) and 89–98% for S2 (1.9–2.7 Log units). Regarding viruses, AdVs, EVs and phages were detected at all sampling points and during all seasons, and they were only partly removed in S1 and/or S2. For example, the virus load was decreased by 2.5 Log units for AdVs and 3.4 Log units for EVs in the case of S1, while the respective values were 4.3 and 1.9 Log units for S2. CONCLUSIONS Generally, CWs eliminated successfully the bacterial load, while the remaining virus load was significant, thus strengthening the argument that viruses could be a reliable indicator for fecal contamination. © 2019 Society of Chemical Industry
    Type of Medium: Online Resource
    ISSN: 0268-2575 , 1097-4660
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 1479465-2
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  • 5
    Online Resource
    Online Resource
    Wiley ; 2021
    In:  Journal of Chemical Technology & Biotechnology Vol. 96, No. 9 ( 2021-09), p. 2451-2460
    In: Journal of Chemical Technology & Biotechnology, Wiley, Vol. 96, No. 9 ( 2021-09), p. 2451-2460
    Abstract: The presence of micro‐pollutants in conventional wastewater treatment plants raises environmental concerns due to their insufficient removal. Non‐biological methods are needed to treat such compounds and this work demonstrates the use of electrochemical oxidation for the degradation of the drug dexamethasone (DEX). RESULTS A cell consisting of a boron‐doped diamond anode and a stainless steel or carbon cloth cathode was employed, with Na 2 SO 4 being the electrolyte. DEX degradation rate, at the low level of mg L −1 (0.25–2 mg L −1 ), increases with increasing current (0.02–0.2 A m −2 ), as well as in the presence of sodium persulfate (50–250 mg L −1 ); the latter is electrochemically activated to produce additional oxidants and enhances degradation in a synergistic way. A rate constant of 0.194 min −1 was recorded for 0.5 mg L −1 DEX degradation at 0.2 A m −2 with 150 mg L −1 persulfate. The water matrix had little effect on performance compared to experiments in pure water; the only exception was the presence of chloride (50–250 mg L −1 ), which substantially improved rates due to the formation of active chlorine species (up to about five times). Carbon cloth accelerated DEX removal by up to three times compared to stainless steel and this was partly due to its adsorptive capacity; similarly, reactions involving DEX transformation products (TPs) also occurred faster. Seven TPs were identified and profiles were followed; reaction pathways involve hydroxylation, oxidation, decarboxylation and ring‐opening reactions, followed by fluorine release in the liquid phase. CONCLUSION A hybrid technology based on electrochemical oxidation and persulfate activation is proposed for the treatment of residual pharmaceuticals in environmental matrices. © 2021 Society of Chemical Industry (SCI).
    Type of Medium: Online Resource
    ISSN: 0268-2575 , 1097-4660
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 1479465-2
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  • 6
    In: Journal of Chemical Technology & Biotechnology, Wiley
    Abstract: This perspective article primarily discusses the role of water matrix for the advanced treatment of watercourses. This relies on experimental work regarding the inactivation of Escherichia coli , Enterococcus faecalis, and Vibrio parahaemolyticus by an advanced oxidation process, namely activated persulfate, in five matrices of varying complexity, (i.e., from as simple as deionized water to secondary treated effluent). For comparison purposes, respective tests were performed with ultraviolet (UVC) radiation, a conventional disinfection process, while results from recent literature are also discussed. Only in deionized water can activated persulfate (i.e., 150 mg L −1 sodium persulfate and 30 mg L −1 ferrous ions) completely inactivate all three bacteria in the course of several minutes, but the process is ineffective in other matrices (i.e., bottled, tap, or lake water, as well as wastewater), where 1–2 orders of magnitude longer times are needed for partial inactivation, which decreases in the order E. coli   〉   E. faecalis  ~  V. parahaemolyticus . Conversely, UVC (at 30 W nominal value) is highly efficient against all bacteria and in all matrices in a matter of just a few seconds. The general perception is that treatment efficiency decreases with increasing matrix complexity in terms of total concentration and/or individual components composition, irrespective of the applied treatment method and its objectives (i.e., disinfection, decontamination, or mineralization). However, there are always exceptions the rule, further highlighting how case‐specific advanced water treatment can be. The matrix itself should be given particular emphasis for the rational design of efficient water treatment processes. © 2023 Society of Chemical Industry (SCI).
    Type of Medium: Online Resource
    ISSN: 0268-2575 , 1097-4660
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 1479465-2
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  • 7
    In: Journal of Chemical Technology & Biotechnology, Wiley
    Abstract: During the coronavirus disease 2019 (COVID‐19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), viral transport, fate, disinfection and environmental release in wastewater treatment plants have been issues of high importance for overall management. Although a huge number of scientific publications related to coronaviruses have been published, the number of studies on different aspects of wastewater treatment strategies to deal with SARS‐CoV‐2 abatement is still relatively limited and results are often confusing. To define real wastewater risks for public health and the environment, we have performed a systematic review and identified 96 papers from the PubMed database. We focused on SARS‐CoV‐2 wastewater treatments and how the type and level of treatments affect the virological quality of the effluents, the role of disinfectants, the treatment of medical wastewater, the role of new technologies, as well as the wastewater treatment in low‐ and middle‐income countries. It was concluded that, in general, well‐designed and well‐functioning wastewater treatment plants (WWTPs) and on‐site reliable sanitation systems may significantly limit the risk of SARS‐CoV‐2. The development of cost‐effective decentralized water and wastewater treatment facilities for low‐ and middle‐income countries for the abatement of coronaviruses should be enhanced. Lessons learned during the COVID‐19 pandemic with regard to wastewater treatment are expected to support an improved detection, response and containment of future viral disease outbreaks. © 2023 The Authors. Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).
    Type of Medium: Online Resource
    ISSN: 0268-2575 , 1097-4660
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 1479465-2
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  • 8
    Online Resource
    Online Resource
    Hindawi Limited ; 2013
    In:  International Journal of Photoenergy Vol. 2013 ( 2013), p. 1-9
    In: International Journal of Photoenergy, Hindawi Limited, Vol. 2013 ( 2013), p. 1-9
    Abstract: The removal of bisphenol A (BPA) under simulated solar irradiation and in the presence of either TiO 2 or ZnO catalysts immobilized onto glass plates was investigated. The effect of various operating conditions on degradation was assessed including the amount of the immobilized catalyst (36.1–150.7 mg/cm 2 for TiO 2 and 0.5–6.8 mg/cm 2 for ZnO), initial BPA concentration (50–200  μ g/L), treatment time (up to 90 min), water matrix (wastewater, drinking water, and pure water), the addition of H 2 O 2 (25–100 mg/L), and the presence of other endocrine disruptors in the reaction mixture. Specifically, it was observed that increasing the amount of immobilized catalyst increases BPA conversion and so does the addition of H 2 O 2 up to 100 mg/L. Moreover, BPA degradation follows first-order reaction kinetics indicating that the final removal is not practically affected by the initial BPA concentration. Degradation in wastewater is slower than that in pure water up to five times, implying the scavenging behavior of effluent’s constituents against hydroxyl radicals. Finally, the presence of other endocrine disruptors, such as 17 α -ethynylestradiol, spiked in the reaction mixture at low concentrations usually found in environmental samples (i.e., 100  μ g/L), neither affects BPA degradation nor alters its kinetics to a considerable extent.
    Type of Medium: Online Resource
    ISSN: 1110-662X , 1687-529X
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2013
    detail.hit.zdb_id: 2028941-8
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  • 9
    Online Resource
    Online Resource
    MDPI AG ; 2021
    In:  Polymers Vol. 13, No. 17 ( 2021-08-26), p. 2871-
    In: Polymers, MDPI AG, Vol. 13, No. 17 ( 2021-08-26), p. 2871-
    Abstract: The effect of copper oxide and zinc oxide nanoparticles (NPs) on the mechanical and thermal properties of ground waste concrete inorganic polymers (GWC IPs) has been investigated. NPs are added to GWC IPs at loadings of 0.1, 0.5, 1, and 2% w/w. The phase composition and microstructure of NPs GWC IPs have also been examined using X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscope (SEM/EDS) techniques. Results show that the mechanical properties of GWC IPs are improved (23 MPa) due to addition of NPs (1% ZnO). In particular, GWC IPs embedded with 0.5% CuO and 1% ZnO NPs exhibited relatively improved compressive strength. The addition of NPs decreases the macroporosity and increases the mesoporosity of IPs matrix and decreases relatively the ability of IPs matrix to water absorption. The antimicrobial activity of GWC IPs doped with 0.5 and 1% CuO NPs against E. coli was also determined.
    Type of Medium: Online Resource
    ISSN: 2073-4360
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2527146-5
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  • 10
    Online Resource
    Online Resource
    MDPI AG ; 2020
    In:  Sustainability Vol. 12, No. 23 ( 2020-12-01), p. 10047-
    In: Sustainability, MDPI AG, Vol. 12, No. 23 ( 2020-12-01), p. 10047-
    Abstract: This mini-review article discusses the critical factors that are likely to affect the performance of solar photocatalysis for environmental applications and, in particular, for the simultaneous degradation of emerging micro-pollutants and the inactivation of microbial pathogens in aqueous matrices. Special emphasis is placed on the control of specific operating factors like the type and the form of catalysts used throughout those processes, the intriguing role of the water matrix, and the composition of the microbial load of the sample in each case. The interplay among the visible responsive catalyst, the target pollutants/pathogens, including various types of microorganisms and the non-target water matrix species, dictates performance in an unpredictable and case-specific way. Case studies referring to lab and pilot-scale applications are presented to highlight such peculiarities. Moreover, current trends regarding the elimination of antibiotic-resistant bacteria and resistance genes by means of solar photocatalysis are discussed. The antibiotic resistance dispersion into the aquatic environment and how advanced photocatalytic processes can eliminate antibiotic resistance genes in microbial populations are documented, with a view to investigate the prospect of using those purification methods for the control-resistant microbial populations found in the environment. Understanding the interactions of the various water components (both inherent and target species) is key to the successful operation of a treatment process and its scaling up.
    Type of Medium: Online Resource
    ISSN: 2071-1050
    Language: English
    Publisher: MDPI AG
    Publication Date: 2020
    detail.hit.zdb_id: 2518383-7
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