Literatura académica sobre el tema "Modified-Fenton"
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Artículos de revistas sobre el tema "Modified-Fenton"
Naumczyk, Jeremi, Izabela Prokurat y Piotr Marcinowski. "Landfill Leachates Treatment by /UV, /, Modified Fenton, and Modified Photo-Fenton Methods". International Journal of Photoenergy 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/909157.
Texto completoXie, Yanjun, Zefang Xiao y Carsten Mai. "Degradation of chemically modified Scots pine (Pinus sylvestris L.) with Fenton reagent". Holzforschung 69, n.º 2 (1 de febrero de 2015): 153–61. http://dx.doi.org/10.1515/hf-2014-0067.
Texto completoMackul’ak, Tomáš, Josef Prousek y L’ubomír Švorc. "Degradation of atrazine by Fenton and modified Fenton reactions". Monatshefte für Chemie - Chemical Monthly 142, n.º 6 (28 de abril de 2011): 561–67. http://dx.doi.org/10.1007/s00706-011-0504-8.
Texto completoGoi, A., Y. Veressinina y M. Trapido. "Degradation of salicylic acid by Fenton and modified Fenton treatment". Chemical Engineering Journal 143, n.º 1-3 (septiembre de 2008): 1–9. http://dx.doi.org/10.1016/j.cej.2008.01.018.
Texto completoCross, J. B., R. P. Currier, D. J. Torraco, L. A. Vanderberg, G. L. Wagner y P. D. Gladen. "Killing of Bacillus Spores by Aqueous Dissolved Oxygen, Ascorbic Acid, and Copper Ions". Applied and Environmental Microbiology 69, n.º 4 (abril de 2003): 2245–52. http://dx.doi.org/10.1128/aem.69.4.2245-2252.2003.
Texto completoGarófalo-Villalta, Soraya, Tanya Medina-Espinosa, Christian Sandoval-Pauker, William Villacis, Valerian Ciobotă, Bisesti Muñoz y Jentzsch Vargas. "Degradation of Reactive Red 120 dye by a heterogeneous Sono-Fenton process with goethite deposited onto silica and calcite sand". Journal of the Serbian Chemical Society 85, n.º 1 (2020): 125–40. http://dx.doi.org/10.2298/jsc190506096g.
Texto completoKoolivand, Ali, Parisa Rastgordani y Emad Mohammadtalebi. "Investigation on the Efficiency of Modified Fenton on the Treatment of Leachate Generated From Oily Sludge Composting". Journal of Arak University Medical Sciences 24, n.º 3 (1 de agosto de 2021): 224–333. http://dx.doi.org/10.32598/jams.24.3.2117.8.
Texto completoWei, Chao Shuai, Wen Yu Huang, Rui Jie Zhang, Ying Hui Wang, Li Min Luo, Hua Mo y Long Huan Xiao. "Assessment of the Fe3+-EDTA Complex in UV-Fenton-Like Processes: The Degradation of Methylene Blue". Applied Mechanics and Materials 675-677 (octubre de 2014): 395–400. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.395.
Texto completoSong, Dongbao, Junfeng Li, Weiwei Liu, Zhaoyang Wang, Chun Zhao, Jie Yang, Junhong Tao y Xiaoya Deng. "Performance of Modified Graphite Felt as Cathode in the Electro-Fenton System". Science of Advanced Materials 12, n.º 3 (1 de marzo de 2020): 350–56. http://dx.doi.org/10.1166/sam.2020.3545.
Texto completoZhang, Min Dong, Yan Fei Wei y Mei Huang. "Treatment of Dye Wastewater by Nano-Ferrous Modified Bentonite Assisted Advanced Oxidation Processes". Advanced Materials Research 486 (marzo de 2012): 104–7. http://dx.doi.org/10.4028/www.scientific.net/amr.486.104.
Texto completoTesis sobre el tema "Modified-Fenton"
Li, YongChao. "DETOXIFICATION OF SELECTED CHLORO-ORGANICS BY OXIDATION TECHNIQUE USING CHELATE MODIFIED FENTON REACTION". UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_diss/551.
Texto completoGordana, Pucar Milidrag. "Primena modifikovanog bentonita kao katalizatora u Fenton i foto-Fenton procesu uklanjanja tekstilne reaktivne boje". Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110666&source=NDLTD&language=en.
Texto completoThe aim of this study was to investigate the decolorization efficiency of Reactive Red 120 (RR120) synthetic solution using ferrioxalate (CuOFeB) and Al, Fe-bentonite (AlFeB) catalysts in Fenton and photo-Fenton process. So far, studies of the application of a solar-assisted heterogeneous Fenton process with various Fe loaded catalysts and with ferrioxalate complex have been published, but according to the author’s knowledge, their comparison in terms of efficacy of decolorization has not been performed, which was one of the focus of research in this paper. In addition, the potential of solar energy represents 16.7% of the total utilized potential of renewable energy sources in Serbia, while the average solar radiation in Serbia is about 40% higher than the European average, making it very interesting for application in this type of treatment. In order to optimize the use of solar radiation and to improve the photocatalytic performance of the process, parabolic concentrating reactor was used for the first time. As a significant segment of the wastewater treatment technique during the degradation of persistent compounds, such as organic azo dye, solar photocatalysis was studied. Also, the potential of photolysis of hydrogen peroxide for decolorization of the synthetic dye solution was determined. Aim of the first phase of the study was synthesizing materials by using different methods of preparation, and construction of a solar parabolic reactor, which will be used in Fenton andphoto-Fenton dye degradation processes. The second phase involved the characterization of newlysynthesized materials and the optimization of the photocatalytic process by applying Fenton and photo-Fonton processes, as well as the determination of achieved efficiency of the appliedprocesses. Also, the degree of mineralization and the identification of degradation products after applied processes were determined. Application of the photo-Fenton process on a real effluent was conducted as well. Based on the obtained results during Fenton process and using both types of catalysts in periods of low and high intensity of radiation, from the aspect of achieving high efficiency of decolorization and smallest iron leaching, it can be concluded that the Fenton process is most effective at pH 3. AlFeB showed greater reactivity even at less used doses of 0.05 g, compared to CuOFeB (0.2 g), and the possibility of using less hydrogen peroxide (2.5 mM), achieving high efficiency and a high degree of mineralization. Higher intensity of solar radiationallows the reaction to be carried out at higher pH values when using both catalysts during the photo-Fenton process. This is particularly pronounced largest part in the decolorization process using the CuOFeB catalyst has a photolysis of hydrogen peroxide (80%). Contrary to these results, under the same reaction conditions, a higher doses of AlFeB catalyst (0.1 g) is needed at lower pH value of the reaction, and the process efficiency is significantly dependent on the initial concentration of H 2O2. The fact that in the preparation of the catalysts bentonite as a natural, abundant, inexpensive material was used and solar radiation as a renewable and alternative source of photons, the above results should be taken into account in the cost-effectiveness analysis of the applied process. Also, the application of advanced oxidation processes is considered as a proposal for the best available technique when it comes to the treatment of wastewater from the textile industry, while as additional new techniques, photooxidation is considered as a candidate and the possibility of their application in the treatment of wastewater in tertiary treatment on semi-industrial systems.
FARINELLI, GIULIO. "Improving the sustainability and effectiveness of oxidative processes for water and wastewater purification". Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2903514.
Texto completoDospinescu-Rosu, Ana-Maria. "Synthèse et étude d'amidons modifiés pour le développement de procédés d'oxydation du benzo[a]pyrène, un modèle de polluant organique persistant". Thesis, Littoral, 2011. http://www.theses.fr/2011DUNK0372/document.
Texto completoMy researchs concern remediation of polluted soil by polycyclic aromatic hydrocarbons (PAH) with the benzo[a]pyrene (BaP) as a model of persistent organic pollutant. The persistence of these molecules into soil is mainly due to both limiting parameters: their weak biodisponibility due to their low aqueous solubility and the difficulty for microorganisms of starting the oxidation of such stable molecules. Our approach consisted in the use of polysaccharides like starch matrix for stimulating the solubilization of BaP and allowing on such support the Fenton reaction (Fe²⁺+H2O2 → Fe ³⁺+ OH -+ OH ⁺) as a producer of high oxidant i.e. the hydroxyl radicals OH ⁺. A theoretical computer modelling study conducted on potato starch permits to identify the preferential sites for BaP and iron complexation. Thereafter, the experimental study aimed the chemical modification of starch using two types of alkylated agents i.e. epoxides and anhydrides of carboxylic acids. After the chemical characterization of these molecules by NMR and FTIR spectroscopy, the structure activity relationship between the modified starches, BaP and Fe2+ (as studied by fluorescence, SEM and SEM-EDS) allowed the screening of modified starches and the selection of the most soluble starches and the most effective one in BaP solubilization. For example, the molecule of starch (P17) bi-alkyl substituted by an epoxy group with three carbons and an anhydride with eleven carbons has an aqueous solubility of 4,41 g/L (native starch 0,4 g/L) and a capacity to stimulate the BaP solubility by a 20-factor. The last step of this work approaches, in vitro, the potential application of the modified starch for BaP degradation. The tests carried out with Fenton reaction suggested an original hypothesis based on the production of carbohydrate radicals having a higher half-life time compared with that of the hydroxyl radical itself, conferring them a better capacity to reach and to oxidize BaP. The first tests coupling chemical oxidation and the potentialities of fungal degradation must be still optimized in order to use all the potential biodiversity of fungi
Cercetările acestei teze se înscriu în cadrul unei probleme de remediere a solurilor poluate cu hidrocarburi aromatice policiclice (HAP),având ca model de poluare benzo [a] pirenul (BaP). Persistenţa acestor moleculelor, de acest tip, în soluri este dată în principal de doi parametri limitanţi: biosponibilitatea lor scăzută, datorită solubilităţii apoase scăzute, şi dificultatea, pentru microorganisme de a oxida aceste molecule stabile. Abordarea nostră constă în utilizarea polizaharidelor, având ca suport amidonul: ca matrice permanentă de stimulare a solubilităţii BaPului şi ca suport în reacţia Fenton (Fe²⁺+H2O2 → Fe ³⁺+ OH -+ OH ⁺) producătoare de un oxidant foarte puternic precum radicalul hidroxil OH ⁺. Un studiu teoretic de modelare moleculară a permis punerea în evidenţă în molecula de amidon a unor site-uri de fixare preferenţiale atât pentru BaP cât şi pentru cationul Fe²⁺. Apoi, un studiu experimantal a avut ca obiectiv sinteza chimică a amidonului modificat utilizând două tipuri de agenţi de alchilare: epoxizii şi anhidridele acizilor carboxilici. După caracterizarea chimică a acestor molecule prin spectroscopie RMN şi FTIR, studiile de relaţie structură-activitate (prin fluorescenţă, MEB şi MEB-EDS) între amidonurile modificate, BaP şi cationul Fe²⁺ au permis verificarea a douăzeci de molecule de amidon modificate şi selecţionarea amidonurilor modificate cele mai solubile şi mai eficace în solubilizarea BaPului. De exemplu, molecula de amidon (P17) bialchilată printr-un epoxid cu trei atomi de carbon şi o anhidridă cu unusprezece carboni, prezintă o solubilitate apoasă de 4,41 g/L (faţă de amidonul nativ 0,4 g/L) şi o capacitate de stimulare a solubilităţii BaP de un factor 20. Ultima etapă a acestei teze de doctorat abordează, in vitro, aplicaţiile potenţiale ale amidonurilor modificate pentru degradarea BaPului. Încercările realizate cu reacţia Fenton ne sugerează o ipoteză originală în care se pare că matricea polizaharidică produce radicali carbohidraţi posedând un timp de viaţă superior, comparativ cu cel al radicalului hidroxil, conferind o mai bună capacitate de captare şi oxidare a BaPului. Primele încercări cuplând oxidarea chimică şi potenţialitatea de degradare prin fungi saprotrofi mai trebuie încă optimizată pentru utilizarea întregului potenţial de biodiversitate a fungilor
Almeida, Alcione Aparecida de. "Tratamento de efluente de indústria têxtil utilizando processos químicos avançados via reações de fenton modificadas". Universidade Estadual do Oeste do Parana, 2013. http://tede.unioeste.br:8080/tede/handle/tede/1829.
Texto completoCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
This study was to evaluate the modified Fenton reactions (RFM), through the addition of six complexing organic separately in each reaction, these being: ascorbic acid (AA), citric acid (CA), ethylenediaminetetraacetic acid (EDTA), gluconic acid (AG), oxalic acid (OA) and tartaric acid (TA), the degradation of textile effluent under varying molar ratios between the total organic carbon, [Fe2+], complexing and [H2O2]. In RFM and Fenton reactions (RF) reactor was used consisting of a borosilicate beaker with a maximum volume of 250 mL, in batch, open, without stirring under room temperature in the optimization phase of time aliquots were removed in the effluent times: 0, 3, 6, 9, 12, 15, 18, 21 and 24 h. The procedure consisted of addition of 250 mL of textile effluent to the reactor for RF and RFM, followed by the oxidant and a catalyst for the RF and oxidizing catalyst and complexing to RFM. RF best results in reduction of TOC was obtained in 12 h treatment under initial pH value of 3.0 and a molar ratio [1:0,9:27,5]. Concerning the [COT:Fe2+:H2O2] where noted a reduction of 91.06% of TOC, COD 94.51%, 99.88% and 99.02% of the turbidity of discoloration. The RFM showed the best results with the use of complexing GA at 15 h of treatment under molar ratio [1:1,31:1,12:27,94], its [COT:Fe2+:AG:H2O2] which promoted reduction of 82.30% of TOC, COD 90.53%, 99.27% and 99.19% of the turbidity of discoloration, TA had similar results in reduction of parameters when the effluent subjected to 12 h of treatment in a molar ratio [1:0,76:0,94:32,13]. Concerning the [COT:Fe2+:AT:H2O2] under these conditions was possible to reduce 75.05% TOC, 94.89% COD, 97.84% turbidity and discoloration of 96.75%. However, RF are effective in the treatment of textile effluents, though the RFM presented as a new possibility of the treatment without the necessity of adjusting the initial pH value.
Este estudo teve por objetivo avaliar as reações de Fenton modificadas (RFM), através da adição de seis complexantes orgânicos isoladamente em cada reação, sendo estes: ácido ascórbico (AA), ácido cítrico (AC), ácido etilenodiaminotetracético (EDTA), ácido glucônico (AG), ácido oxálico (AO) e ácido tartárico (AT), na degradação de efluente têxtil, sob variadas relações molares entre o carbono orgânico total, [Fe2+], complexante e o [H2O2]. Nas RFM e reações de Fenton (RF) foi utilizado reator constituído por um béquer de borossilicato com volume máximo de 250 mL, em sistema descontínuo, aberto, sem agitação, sob temperatura ambiente, na fase de otimização do tempo alíquotas do efluente eram retiradas nos tempos: 0, 3, 6, 9, 12, 15, 18, 21 e 24 h. O procedimento consistiu na adição de 250 mL do efluente têxtil ao reator para as RF e RFM, seguido do oxidante e catalisador para as RF e oxidante, catalisador e complexante para as RFM. Nas RF os melhores resultados de redução do COT foi obtido em 12 h de tratamento, sob valor de pH inicial 3,0 e relação molar [1:0,9:27,5] referente ao [COT:Fe2+:H2O2] aonde constatou-se redução de 91,06% do COT, 94,51 da DQO, 99,88 da turbidez e 99,02% de descoloração. As RFM apresentaram os melhores resultados com a utilização do complexante AG em 15 h de tratamento sob relação molar [1:1,31:1,12:27,94], respectivo [COT:Fe2+:AG:H2O2] a qual promoveu a redução de 82,30% do COT, 90,53% da DQO, 99,27% da turbidez e 99,19% de descoloração, o AT apresentou resultados similares de redução dos parâmetros avaliados, quando submetido o efluente a 12 h de tratamento sob relação molar [1:0,76:0,94:32,13] referente ao [COT:Fe2+:AT:H2O2], nestas condições foi possível a redução de 75,05% do COT, 94,89% da DQO, 97,84% da turbidez e descoloração de 96,75%. Contudo, as RF são eficazes no tratamento de efluentes têxteis, entretanto as RFM apresentam-se como uma nova possibilidade de tratamento sem a necessidade de ajuste do valor do pH inicial.
Yang, Weilu. "Electrochemical advanced oxidation processes for emerging organic contaminants removal with graphene-based modified carbon felt electrode". Thesis, Paris Est, 2019. http://www.theses.fr/2019PESC2025.
Texto completoIn recent years, with the continuous development of environmental analysis technologies, some chemicals, which have long been recognized but recently attracted attention, have been continuously entering the environment and threatening human health and ecological environment. The emergence of these new pollutants have attracted wide attention. Among them, pharmaceuticals and personal care products (PPCPs) have become international research hotspots. China is the largest medicine producer and market in the world. With the development of social economy and the improvement of people's living standards, the production and use of various PPCPs in China are increasing rapidly. Compared with the traditional pollutants, the new emerging contaminants are generally difficult to be analyzed due to the limitation of analytical technologies and its low concentration in water. The traditional sewage treatment plants can not achieve efficient degradation and removal effects. The research on risk assessment and control of new emerging contaminants in China is still a big challenge. It is necessary to strengthen the research on potential environmental risk assessment and efficient treatment technology. Advanced oxidation processes (AOPs), as an efficient pollutant treatment technology, has been widely used in the treatment of refractory organic pollutants such as new emerging contaminants in water because of its strong oxidation ability, which can effectively degrade and mineralize pollutants in water. Graphene, as a new type of carbon material, has become an efficient adsorbent and catalyst for pollution treatment due to its excellent conductivity and high specific surface area. However, its application in AOPs has not been widely reported and its mechanism has not been systematically explained. Based on this, this paper studied the role of graphene modified electrodes in electrochemical advanced oxidation processes (EAOPs) with the preparation of graphene by electrochemical exfoliation, application of graphene modified electrodes to electrochemical Fenton (EF) process for the degradation of new emerging contaminants; the construction of in-situ iron-free EAOPs with cathodes modified with nitrogen-doped graphene for abatement of new emerging contaminants and the mechanism of highly efficient catalysis with nitrogen-doped graphene have been explored
Chiou, Jing-Huei y 邱景暉. "Evaluation of a Fe/organic complex-based catalyst for modified-Fenton reaction". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/06725243411628829860.
Texto completo國立屏東科技大學
環境工程與科學系所
95
The pollutants from the leaking pipeline and storage tanks of petrochemicals are likely to cause soil and aquifer contaminations. The chemical oxidation is successful in remediating soil and aquifer contamination. The mixture of Fe(II) and H2O2 soluton was called Fenton reagent. The Fe(II) ion can catalyze H2O2 to produce hydroxyl radicals (˙OH). The ˙OH is very powerful in oxidizing organic pollutants, reducing their toxicity or even mineralizing them to H2O and CO2. However, the Fenton reagent has limitations such as it reacts more effectively at pH=2~3 and produces precipitates which will cause clogging. Recently, it was found that other Fe-containing compounds work better than Fe(II) ion in catalyzing H2O2 at neutral pH. The Fenton reaction catalyzed by non-Fe(II) ion was called Fenton-like reaction. There are many new catalysts tested nowadays. This study used batch reaction systems to evaluate an Fe(III)/organic acid complex, developed by a consultant firm, to be used as the catalyst of Fenton-like reaction. Using O2 production and decolorization of methylene blue dye as indices, the results showed that H2O2 can be effectively and repeatedly catalyzed by the tested Fe(III)-organic acid complex. White precipitates were observed at acidic pH, but not at neutral pH. Higher molar concentrations of organic acid can prevent the precipitation or adsorption of Fe(III) ions, and maintain the catalytical ability of the catalyst in a sandy loam soil. The kinetics result showed that the reaction order for Fenton-like reaction of benzene using the catalyst at Fe(III): organic acid molar ratio = 1:1,1:2,1:5 and 1:10 was first order. In addition, the kinetic constants at Fe(III): organic acid molar ratio = 1:1 were linearly proportional to the initial concentration of benzene. On the other hand, there was no consistent relation observed for the kinetic constant with benzene concentration for other molar ratios of Fe(III)/organic acid.
Capítulos de libros sobre el tema "Modified-Fenton"
Geed, Sachin Rameshrao y Damodhar Ghime. "Treatment of Emerging Water Pollutants by Fenton and Modified Fenton Processes". En Removal of Refractory Pollutants from Wastewater Treatment Plants, 299–310. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003204442-16.
Texto completoKhataee, Alireza y Aliyeh Hasanzadeh. "Modified Cathodes with Carbon-Based Nanomaterials for Electro-Fenton Process". En The Handbook of Environmental Chemistry, 111–43. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/698_2017_74.
Texto completoWaite, T. D., A. J. Feitz y R. Aplin. "Broadening the Scope of Modified Photo-Fenton Processes in Water and Wastewater Treatment through Ferric Complex Design". En Chemical Water and Wastewater Treatment VI, 113–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-59791-6_11.
Texto completoManisha y Prabir Ghosh. "Degradation of Phenol Using Batch-Fluidization Process by Transition Metal Impregnated Red Mud as Modified Catalyst in Heterogeneous Fenton Process". En Lecture Notes in Civil Engineering, 129–34. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6887-9_15.
Texto completo"Modified montmorillonite in photo-Fenton and adsorption processes". En Advanced Oxidation Technologies, 255–72. CRC Press, 2014. http://dx.doi.org/10.1201/b16657-20.
Texto completoWęgrzyn, Agnieszka. "Removal of Phenol from Wastewater Using Fenton-Like Reaction over Iron Oxide–Modified Silicates". En Physico-Chemical Wastewater Treatment and Resource Recovery. InTech, 2017. http://dx.doi.org/10.5772/65097.
Texto completo"Water decontamination by heterogeneous photo-Fenton processes over iron, iron minerals and iron-modified clays". En Advanced Oxidation Technologies, 235–54. CRC Press, 2014. http://dx.doi.org/10.1201/b16657-19.
Texto completoActas de conferencias sobre el tema "Modified-Fenton"
Zhang, Jianbo, Jianfeng Bao, Jingpi Gao, Jiahua Shi, Meijun Chen y Jinghua Li. "Photothermal Synergetic Fenton Catalytic Degradation for Methylene Blue Via NIR-Driven Polypyrrole Modified Magnetic Melamine Foam". En 2021 3rd International Academic Exchange Conference on Science and Technology Innovation (IAECST). IEEE, 2021. http://dx.doi.org/10.1109/iaecst54258.2021.9695832.
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