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Yu X, Somoza-Tornos A, Graells M, Pérez-Moya M. An experimental approach to the optimization of the dosage of hydrogen peroxide for Fenton and photo-Fenton processes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140402. [PMID: 32758807 DOI: 10.1016/j.scitotenv.2020.140402] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 05/09/2020] [Accepted: 06/19/2020] [Indexed: 06/11/2023]
Abstract
The determination of the hydrogen peroxide dosage scheme that minimizes hydrogen peroxide consumption while meeting the specified treatment outcome is crucial for Fenton and photo-Fenton processes. The challenge is building a methodology that provides the optimal dosage profile. However, the lack of detailed dynamic models prevents exploiting model-based optimization methods that have proved successful in other applications. Thus, this work addresses this challenge by providing a problem formulation identifying and discussing objectives and constraints, and the nature of the optimal solution. From this point, the work presents a novel dosage model and a consequent methodology aimed at experimentally optimizing the dosage profile along a discretized time horizon following recipe optimization concepts. The approach is parallel to the numerical solution of the model-based optimization problem posed by hydrogen peroxide dosage. The proposed methodology is validated in the remediation of a Paracetamol (PCT) solution, and the obtained results are assessed and discussed in regard of the evolution of the concentration of hydrogen peroxide, the contaminant (PCT), and Total Organic Carbon (TOC). The concentration of dissolved oxygen (DO), which is also monitored, allows providing a more comprehensive explanation of the nature of the process.
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Affiliation(s)
- Xiangwei Yu
- Department of Chemical Engineering, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Ana Somoza-Tornos
- Department of Chemical Engineering, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Moisès Graells
- Department of Chemical Engineering, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Montserrat Pérez-Moya
- Department of Chemical Engineering, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 16, 08019 Barcelona, Spain.
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Salazar LM, Grisales CM, Garcia DP. How does intensification influence the operational and environmental performance of photo-Fenton processes at acidic and circumneutral pH. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:4367-4380. [PMID: 29855874 DOI: 10.1007/s11356-018-2388-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Abstract
This study evaluates the technical, economical, and environmental impact of sodium persulfate (Na2S2O8) as an enhancing agent in a photo-Fenton process within a solar-pond type reactor (SPR). Photo-Fenton (PF) and photo-Fenton intensified with the addition of persulfate (PFPS) processes decolorize 97% the azo dye direct blue 71 (DB71) and allow producing a highly biodegradable effluent. Intensification with persulfate allowed reducing treatment time in 33% (from 120 to 80 min) and the consumption of chemical auxiliaries needed for pH adjustment. Energy, reagents, and chemical auxiliaries are still and environmental hotspot for PF and PFPS; however, it is worth mentioning that their environmental footprint is lower than that observed for compound parabolic concentrator (CPC)-type reactors. A life-cycle assessment (LCA) confirms that H2O2, NaOH, and energy consumption are the variables with the highest impact from an environmental standpoint. The use of persulfate reduced the relative impact in 1.2 to 12% in 12 of the 18 environmental categories studied using the ReCiPe method. The PFPS process emits 1.23 kg CO2 (CO2-Eqv/m3 treated water). On the other hand, the PF process emits 1.28 kg CO2 (CO2-Eqv/m3 treated water). Process intensification, chemometric techniques, and the use of SPRs minimize the impact of some barriers (reagent and energy consumption, technical complexity of reactors, pressure drops, dirt on the reflecting surfaces, fragility of reactor materials), limiting the application of advanced oxidation systems at an industrial level, and decrease treatment cost as well as potential environmental impacts associated with energy and reagents consumption. Treatment costs for PF processes (US$0.78/m3) and PFPS processes (US$0.63/m3) were 20 times lower than those reported for photo-Fenton processes in CPC-type reactors.
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Affiliation(s)
- Luis Miguel Salazar
- Facultad de Ingeniería y Administración, Universidad Nacional de Colombia-Sede Palmira, Carrera 32 No. 12-00, Chapinero, Vía Candelaria, Palmira, Colombia
| | - Claudia Mildred Grisales
- Facultad de Ingeniería y Administración, Universidad Nacional de Colombia-Sede Palmira, Carrera 32 No. 12-00, Chapinero, Vía Candelaria, Palmira, Colombia
| | - Dorian Prato Garcia
- Facultad de Ingeniería y Administración, Universidad Nacional de Colombia-Sede Palmira, Carrera 32 No. 12-00, Chapinero, Vía Candelaria, Palmira, Colombia.
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Chavaco LC, Arcos CA, Prato-Garcia D. Decolorization of reactive dyes in solar pond reactors: Perspectives and challenges for the textile industry. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 198:203-212. [PMID: 28460327 DOI: 10.1016/j.jenvman.2017.04.077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 04/23/2017] [Accepted: 04/24/2017] [Indexed: 06/07/2023]
Abstract
In the past three decades, Fenton and photo-Fenton processes have been the subject of a large number of research studies aimed at developing a low-cost and robust alternative to treat complex wastewater. Aspects such as installation and operating costs and technical complexity of reactors have limited the commercial applications of Fenton processes. In this study, we evaluated the potential of solar pond reactors to carry out degradation of the dye reactive orange 16 (RO16). Decolorization (D = 99 ± 0.6%), chemical oxygen demand reduction (COD = 55 ± 2%), total organic carbon removal (TOC = 28 ± 0.5%), and biocompatibilization can be accomplished using 15% peroxide (0.6 mg H2O2/mg RO16), which is theoretically required to mineralize the dye. Under dark conditions, decolorization and aromatic removal were scarcely affected (2%), whereas COD and TOC removal were reduced to 37% and 16%, respectively. The application of multivariable analysis and the use of low-cost reactors may lead to a reduction in annual treatment costs of colored effluents to 0.76 (US/m3). Furthermore, the treatment capacity can be increased from 0.6 m3 wastewater/m2 reactor surface to 1.7 m3 wastewater/m2 reactor surface without compromising process efficiency or the biodegradability (BOD5/COD ratio) of the effluent. Dyeing auxiliaries, mainly NaCl, appreciably reduced the decolorization performance in Fenton (13 ± 0.4%) and photo-Fenton (83 ± 0.5%) processes due to the formation of iron-chloride complexes and less powerful oxidants. To reduce the impact of auxiliary agents on process performance and treatment capacity, the Fe2+ concentration should be increased from 5 mg/L to 15 mg/L. The results seem promising; however, additional studies at pilot and semi-industrial scales should be conducted to demonstrate the potential of low-cost reactors to carry out colored wastewater treatment.
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Affiliation(s)
- L C Chavaco
- Universidad Nacional de Colombia, Sede Palmira, Facultad de Ingeniería y Administración, Carrera 32 No. 12-00, Chapinero, Vía Candelaria, Palmira, Colombia
| | - C A Arcos
- Universidad Nacional de Colombia, Sede Palmira, Facultad de Ingeniería y Administración, Carrera 32 No. 12-00, Chapinero, Vía Candelaria, Palmira, Colombia
| | - D Prato-Garcia
- Universidad Nacional de Colombia, Sede Palmira, Facultad de Ingeniería y Administración, Carrera 32 No. 12-00, Chapinero, Vía Candelaria, Palmira, Colombia.
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Zhou W, Zhao H, Gao J, Meng X, Wu S, Qin Y. Influence of a reagents addition strategy on the Fenton oxidation of rhodamine B: control of the competitive reaction of ·OH. RSC Adv 2016. [DOI: 10.1039/c6ra20242j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Microlevel competitive reactions of ·OH could be regulated by applying a macrolevel addition strategy of the Fenton reagents.
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Affiliation(s)
- Wei Zhou
- School of Energy Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Haiqian Zhao
- School of Civil Engineering & Architecture
- Northeast Petroleum University
- Daqing 163318
- P. R. China
| | - Jihui Gao
- School of Energy Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Xiaoxiao Meng
- School of Energy Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Shaohua Wu
- School of Energy Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Yukun Qin
- School of Energy Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
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Hayat H, Mahmood Q, Pervez A, Bhatti ZA, Baig SA. Comparative decolorization of dyes in textile wastewater using biological and chemical treatment. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.09.025] [Citation(s) in RCA: 173] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Yamal-Turbay E, González LP, Graells M, Pérez-Moya M. Degradation of sulphamethazine by means of an improved photo-Fenton process involving a hydrogen peroxide systematic dosage. ENVIRONMENTAL TECHNOLOGY 2014; 35:1695-1701. [PMID: 24956760 DOI: 10.1080/09593330.2014.880516] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Despite being acknowledged as an emerging contaminant, sulphamethazine (SMT) degradation has received scarce attention in the advanced oxidation processes field. Thus, this work addresses the degradation of SMT in water solutions (12 L of 25mgL-1 samples) by means of a photo-Fenton process and a systematic H202 dosage protocol that enhances its performance. A conventional photo-Fenton process led to 86% mineralization after 120 min treatment when adding the Fenton reactants at once (initial concentrations were 10mgL-1 Fe(II) and 200mgL-1 H2O2). Conversely, the process achieved the total mineralization of the samples in less than 75 min when the same amount of H202 was continuously dosed according to a conveniently tuned dosage protocol. In both cases, total SMT degradation was achieved within 10 min. Hence, this work's aim is to determine the efficient dosage conditions of H2O2. The results show that a significant improvement of the photo-Fenton mineralization of SMT solutions is possible by adjusting the dosage of H2O2.
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de Luna LAV, da Silva THG, Nogueira RFP, Kummrow F, Umbuzeiro GA. Aquatic toxicity of dyes before and after photo-Fenton treatment. JOURNAL OF HAZARDOUS MATERIALS 2014; 276:332-8. [PMID: 24910910 DOI: 10.1016/j.jhazmat.2014.05.047] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 04/17/2014] [Accepted: 05/07/2014] [Indexed: 05/03/2023]
Abstract
This study evaluated the ecotoxicity of five dyes to freshwater organisms before and during their photo-Fenton degradation. EC50 (48h) of the five tested dyes ranged from of 6.9 to >1000mgL(-1) for Daphnia similis. In the chronic tests IC50 (72h) varied from 65 to >100mgL(-1) for Pseudokirchneriella subcapitata and IC50 (8 days) from 0.5 to 410mgL(-1) for Ceriodaphnia dubia. Toxicity tests revealed that although the applied treatment was effective for decolorization of the dye, the partial mineralization may be responsible for the presence of degradation products which can be either more toxic than the original dye, as is the case of Vat Green 3 and Reactive Black 5, lead to initially toxic products which may be further degraded to non toxic products (acid Orange 7 and Food Red 17), or generate non toxic products as in the case of Food Yellow 3. The results highlighted the importance of assessing both acute and chronic toxicity tests of treated sample before effluent discharge.
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Affiliation(s)
- Luis A V de Luna
- Faculdade de Tecnologia, UNICAMP - Universidade Estadual de Campinas, Limeira, SP 13484-332, Brazil.
| | - Thiago H G da Silva
- Departamento de Química Analítica, Instituto de Química de Araraquara, UNESP - Univ Estadual Paulista, SP 14800-900, Brazil.
| | - Raquel F Pupo Nogueira
- Departamento de Química Analítica, Instituto de Química de Araraquara, UNESP - Univ Estadual Paulista, SP 14800-900, Brazil.
| | - Fábio Kummrow
- Faculdade de Tecnologia, UNICAMP - Universidade Estadual de Campinas, Limeira, SP 13484-332, Brazil; Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, SP 09972-270, Brazil.
| | - Gisela A Umbuzeiro
- Faculdade de Tecnologia, UNICAMP - Universidade Estadual de Campinas, Limeira, SP 13484-332, Brazil.
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Prato-Garcia D, Buitrón G. Improvement of the robustness of solar photo-Fenton processes using chemometric techniques for the decolorization of azo dye mixtures. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2013; 131:66-73. [PMID: 24145012 DOI: 10.1016/j.jenvman.2013.09.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 09/19/2013] [Accepted: 09/22/2013] [Indexed: 06/02/2023]
Abstract
The aim of this study was to propose and to evaluate a strategy based on chemometric tools to improve the robustness of photo-Fenton processes during decolorization of mixtures of sulfonated azo dyes. The strategy consisted of three stages: quantification, reagent dose selection and robustness analysis. The partial least square method was used for the simultaneous quantification of acid orange 7, acid red 151, and acid blue 113, in a mixture, by using UV-visible spectra. Then, a central composite design was applied to set the best reagent dose (Fe(2+) and H2O2) to obtain a decolorization of 97% for each dye. The application of the strategy allowed to predict the concentration of each dye and to select the best reagent dose to decolorize mixtures of sulfonated dyes. Also with the application of the developed strategy, a reduction of peroxide from 33 to 65% was obtained and the undesirable reactions were reduced. It was observed that the variation of dye concentrations do not affected the percentage of decolorization.
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Affiliation(s)
- Dorian Prato-Garcia
- Laboratory for Research on Advanced Processes for Water Treatment, Instituto de Ingeniería, Unidad Académica Juriquilla, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Campus UNAM Juriquilla, Querétaro 76230, Mexico
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Yamal-Turbay E, Jaén E, Graells M, Pérez-Moya M. Enhanced photo-Fenton process for tetracycline degradation using efficient hydrogen peroxide dosage. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.05.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Nidheesh PV, Gandhimathi R, Ramesh ST. Degradation of dyes from aqueous solution by Fenton processes: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:2099-132. [PMID: 23338990 DOI: 10.1007/s11356-012-1385-z] [Citation(s) in RCA: 277] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 11/29/2012] [Indexed: 05/26/2023]
Abstract
Several industries are using dyes as coloring agents. The effluents from these industries are increasingly becoming an environmental problem. The removal of dyes from aqueous solution has a great potential in the field of environmental engineering. This paper reviews the classification, characteristics, and problems of dyes in detail. Advantages and disadvantages of different methods used for dye removal are also analyzed. Among these methods, Fenton process-based advanced oxidation processes are an emerging prospect in the field of dye removal. Fenton processes have been classified and represented as "Fenton circle". This paper analyzes the recent studies on Fenton processes. The studies include analyzing different configurations of reactors used for dye removal, its efficiency, and the effects of various operating parameters such as pH, catalyst concentration, H2O2 concentration, initial dye concentration, and temperature of Fenton processes. From the present study, it can be conclude that Fenton processes are very effective and environmentally friendly methods for dye removal.
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Affiliation(s)
- Puthiya Veetil Nidheesh
- Department of Civil Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
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