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Calaixo MRC, Ribeirinho-Soares S, Madeira LM, Nunes OC, Rodrigues CSD. Catalyst-free persulfate activation by UV/visible radiation for secondary urban wastewater disinfection. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 348:119486. [PMID: 37925988 DOI: 10.1016/j.jenvman.2023.119486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/23/2023] [Accepted: 10/26/2023] [Indexed: 11/07/2023]
Abstract
This study focuses on the treatment of secondary urban wastewater (W) to improve the effluent quality aiming at the reduction of pathogenic microorganisms for the safe reuse of the treated wastewater (TW). Catalyst-free persulfate activation by radiation-based oxidation was applied as a treatment technology. A parametric study was carried out to select the best operating conditions. Total enterobacteria inactivation (quantified by the log reduction (CFU/100 mL)) was achieved when using [S2O82-] = 1 mM, pH = 8.5 (natural pH of W), T = 25 °C, and I = 500 W/m2. However, storing TW for 3 days promoted the regrowth of bacteria, risking its reutilization. Therefore, in this study, and for the first time, the potential beneficial role of inoculation of wastewater treated by the radiation-activated persulfate process with a diverse bacterial community was evaluated in order to control the regrowth of potentially harmful microorganisms through bacterial competition. For this, TW was diluted with river water (R) in the volume percentages of 5, 25, and 50 (percentages refer to R content), and enterobacteria and total heterotrophs were enumerated before and after storage for 72 h. The results showed total heterotrophs and enterobacteria regrowth for TW and R + TW diluted 5 and 25% after storage. However, for R + TW diluted 50%, only the total heterotrophs regrew. Hence, the treated wastewater generated by the oxidative process diluted with 50% river water complies with the legislated limits for reuse in urban uses or irrigation.
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Affiliation(s)
- Mário R C Calaixo
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Sara Ribeirinho-Soares
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Luis M Madeira
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Olga C Nunes
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Carmen S D Rodrigues
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal.
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Dos Santos NDO, Busquets R, Campos LC. Insights into the removal of microplastics and microfibres by Advanced Oxidation Processes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 861:160665. [PMID: 36473655 DOI: 10.1016/j.scitotenv.2022.160665] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/22/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Water treatment plants' effluents are hotspots of microplastics (MPs) and microfibres (MFs) released into the aquatic environment because they were not designed to capture these particles. Special attention should be given to MFs, since they mainly come from laundry and are related to one of the main MP shapes detected in water and wastewater treatment plants. In this sense, Advanced Oxidation Processes (AOPs) could be a feasible solution for tackling MP and MF pollution, however, it is still premature to extract conclusions due to the limited number of studies on the degradation of these particles (specifically MFs) using AOPs. This review addresses the impacts of AOPs on MPs/MFs, focusing on their degradation efficiency, toxicity, and sustainability of the processes, among other aspects. The review points out that polyamide MFs can achieve mass loss >90% by photocatalytic system using TiO2. Also, the low oxidation of MPs (<30 %) by conventional Fenton process affects mainly the surface of the MPs. However, other Fenton-based processes can provide better removal of some types of MPs, mainly using temperatures >100 °C, reaction time ≥ 5 h, and initial pH ≤ 3, achieving MP weight loss up to 96 %. Despite these results, better operating conditions are still required for AOPs since the ones reported so far are not feasible for full-scale application. Additionally, ozonation in treatment plants has increased the fragmentation of MPs (including MFs), leading to a new generation of MPs. More attention is needed on toxicity effects of intermediates and methods of analysis employed for the analysis of MPs/MFs in wastewater effluent should be standardized so that studies can be compared effectively. Future research should focus on the sustainability of the AOP for MP removal in water treatment (power consumption, chemicals consumed and operational costs) for a better understanding of full-scale applicability of AOP adapted to MP treatment.
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Affiliation(s)
- Naiara de Oliveira Dos Santos
- Department of Civil, Environmental & Geomatic Engineering, Faculty of Engineering, University College London, London WC1E 6BT, United Kingdom
| | - Rosa Busquets
- Department of Civil, Environmental & Geomatic Engineering, Faculty of Engineering, University College London, London WC1E 6BT, United Kingdom; School of Life Sciences, Pharmacy and Chemistry, Faculty of Health, Science, Social Care and Education, Kingston University, Penrhyn Road, Kingston Upon Thames KT1 2EE, United Kingdom
| | - Luiza C Campos
- Department of Civil, Environmental & Geomatic Engineering, Faculty of Engineering, University College London, London WC1E 6BT, United Kingdom.
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Ranga M, Sinha S. Mechanism and Techno‐Economic Analysis of the Electrochemical Process. CHEMBIOENG REVIEWS 2023. [DOI: 10.1002/cben.202200025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- Monica Ranga
- Indian Institute of Technology Roorkee Department of Chemical Engineering 247667 Roorkee, Uttarakhand India
| | - Shishir Sinha
- Indian Institute of Technology Roorkee Department of Chemical Engineering 247667 Roorkee, Uttarakhand India
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Santos MC, Antonin VS, Souza FM, Aveiro LR, Pinheiro VS, Gentil TC, Lima TS, Moura JPC, Silva CR, Lucchetti LEB, Codognoto L, Robles I, Lanza MRV. Decontamination of wastewater containing contaminants of emerging concern by electrooxidation and Fenton-based processes - A review on the relevance of materials and methods. CHEMOSPHERE 2022; 307:135763. [PMID: 35952792 DOI: 10.1016/j.chemosphere.2022.135763] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/11/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
In recent years, there has been an increasingly growing interest regarding the use of electrochemical advanced oxidation processes (EAOPs) which are considered highly promising alternative treatment techniques for addressing environmental issues related to pollutants of emerging concern. In EAOPs, electrogenerated oxidizing agents, such as hydroxyl radical (HO•), can react non-selectively with a wide range of organic compounds, degrading and mineralizing their structures to unharmful molecules like CO2, H2O, and inorganic ions. To this date, a broad spectrum of advanced electrocatalysts have been developed and applied for the treatment of compounds of interest in different matrices, specifically aiming at enhancing the degradation performance. New combined methods have also been employed as alternative treatment techniques targeted at circumventing the major obstacles encountered in Fenton-based processes, such as high costs and energy consumption, which still contribute significantly toward inhibiting the large-scale application of these processes. First, some fundamental aspects of EAOPs will be presented. Further, we will provide an overview of electrode materials which have been recently developed and reported in the literature, highlighting different anode and cathode structures employed in EAOPs, their main advantages and disadvantages, as well as their contribution to the performance of the treatment processes. The influence of operating parameters, such as initial concentrations, pH effect, temperature, supporting electrolyte, and radiation source, on the treatment processes were also studied. Finally, hybrid techniques which have been reported in the literature and critically assess the most recent techniques used for evaluating the degradation efficiency of the treatment processes.
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Affiliation(s)
- Mauro C Santos
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil.
| | - Vanessa S Antonin
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Felipe M Souza
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil; Departamento de Química, Instituto Federal de Educação, Ciência e Tecnologia Goiano, BR-153, Km 633, Zona Rural, CEP: 75650-000, Morrinhos, GO, Brazil
| | - Luci R Aveiro
- São Paulo Federal Institute of Education, Science and Technology, Rua Pedro Vicente, 625, Canindé São Paulo, CEP: 01109-010, SP, Brazil
| | - Victor S Pinheiro
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Tuani C Gentil
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Thays S Lima
- Department of Chemistry, Institute of Chemical and Pharmaceutical Environmental Sciences, Federal University of São Paulo (UNIFESP), Rua Prof. Artur Riedel, n 275 - Jd. Eldorado, CEP: 09972-270, Diadema, SP, Brazil
| | - João P C Moura
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Carolina R Silva
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Lanna E B Lucchetti
- Laboratory of Eletrochemistry and Nanostructured Materials (LEMN) Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), CEP: 09210-170, Rua Santa Adélia 166, Bairro Bangu, Santo André, SP, Brazil
| | - Lucia Codognoto
- Department of Chemistry, Institute of Chemical and Pharmaceutical Environmental Sciences, Federal University of São Paulo (UNIFESP), Rua Prof. Artur Riedel, n 275 - Jd. Eldorado, CEP: 09972-270, Diadema, SP, Brazil
| | - Irma Robles
- Center for Research and Technological Development in Electrochemistry, S.C., Parque Tecnológico Querétaro, 76703, Sanfandila, Pedro Escobedo, Querétaro, Mexico
| | - Marcos R V Lanza
- São Carlos Institute of Chemistry (IQSC), University of São Paulo (USP), Avenida Trabalhador São-carlense 400, São Carlos, SP, 13566-590, Brazil
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Cui H, Yu J, Zhu X, Cui Y, Ji C, Zhang C, Xue J, Jia X, Qin S, Li R. Advanced treatment of chicken farm flushing wastewater by integrating Fenton oxidation and algal cultivation process for algal growth and nutrients removal. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 298:113543. [PMID: 34392095 DOI: 10.1016/j.jenvman.2021.113543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 07/10/2021] [Accepted: 08/10/2021] [Indexed: 06/13/2023]
Abstract
Algae based wastewater treatment has been considered as the most promising win-win strategy for nutrients removal and biomass accumulation. However, the poor linking between traditional wastewater treatment and algal cultivation limits the achievement of this goal. In this study, a novel combination of Fenton oxidation and algal cultivation (CFOAC) system was investigated for the treatment of chicken farm flushing wastewater (CFFW). Fenton oxidation (FO) was adopted to reduce the excessive ammonia nitrogen, which might inhibit the algal growth. The results showed that single FO pretreatment removed 70.5 %, 96.7 %, 86.1 %, and 96.2 % of TN, TAN, TP, and COD, respectively. The highest biomass (235.8 mg/L/d) and lipid (77.3 mg/L/d) productivities were achieved on optimized CFOAC system after 7 days batch cultivation. Accordingly, the nutrients removal efficiencies increased to almost 100 %. Further fatty acid profile analysis showed that algae grown on optimal CFOAC system accumulated a high level of total lipids (32.8 %) with C16-C18 fatty acid as the most abundant compositions (accounting for over 60.6 %), which were propitious to biodiesel production. In addition, this CFOAC system was magnified from 1 L flask to 50 L horizontal pipe photobioreactor (HPPB) in semi-continuously culture under optimal conditions. The average biomass and lipid productivities were 995.7 mg/L/d and 320.6 mg/L/d, respectively, when cultured at 6 days hydraulic retention time with 1/3 substitution every two days. These findings proved that the novel CFOAC system is efficient in nutrients removal, algal cultivation, and biomass production for advanced treatment of CFFW.
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Affiliation(s)
- Hongli Cui
- College of Agriculture, Institute of Molecular Agriculture and Bioenergy, Shanxi Agricultural University, Taigu, 030801, Shanxi, China; State Key Laboratory of Integrative Sustainable Dryland Agriculture (in Preparation), Shanxi Agricultural University, Taiyuan, 030031, Shanxi, China
| | - Jie Yu
- College of Agriculture, Institute of Molecular Agriculture and Bioenergy, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Xiaoli Zhu
- College of Agriculture, Institute of Molecular Agriculture and Bioenergy, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Yulin Cui
- Key Laboratory of Coastal Biology and Biological Resource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China
| | - Chunli Ji
- College of Agriculture, Institute of Molecular Agriculture and Bioenergy, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Chunhui Zhang
- College of Agriculture, Institute of Molecular Agriculture and Bioenergy, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Jinai Xue
- College of Agriculture, Institute of Molecular Agriculture and Bioenergy, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Xiaoyun Jia
- College of Life Sciences, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Song Qin
- Key Laboratory of Coastal Biology and Biological Resource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China
| | - Runzhi Li
- College of Agriculture, Institute of Molecular Agriculture and Bioenergy, Shanxi Agricultural University, Taigu, 030801, Shanxi, China; State Key Laboratory of Integrative Sustainable Dryland Agriculture (in Preparation), Shanxi Agricultural University, Taiyuan, 030031, Shanxi, China.
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Abstract
In the present work, the degradation of p-nitrophenol (PNP) and its mineralization by a UV/Vis-based persulphate activation process was investigated. Firstly, a screening of processes as direct photolysis, persulphate alone and persulphate activated by radiation was performed. The incidence of radiation demonstrated to have an important role in the oxidant activation, allowing to achieve the highest PNP and total organic carbon (TOC) removals. The maximum PNP oxidation (100%) and mineralization (61.6%)—both after 2 h of reaction time—were reached when using T = 70 °C, (S2O82−) = 6.4 g/L and I = 500 W/m2. The influence of radiation type (ultraviolet/visible, visible or simulated solar light) was also evaluated, being found that the source with the highest emission of ultraviolet radiation (UV/visible) allowed to achieve the best oxidation efficiency; however, solar radiation also reached very-good performance. According to quenching experiments, the sulphate radical is key in the activated persulphate oxidation process, but the hydroxyl radical also plays an important role.
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Haspulat Taymaz B, Eskizeybek V, Kamış H. A novel polyaniline/NiO nanocomposite as a UV and visible-light photocatalyst for complete degradation of the model dyes and the real textile wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:6700-6718. [PMID: 33006103 DOI: 10.1007/s11356-020-10956-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
The textile processing industry utilizes enormous amounts of water. After the dying process, the wastewater discharged to the environment contains carcinogens, non-biodegradable, toxic, and colored organic materials. This study aimed to develop a nanocomposite material with improved photocatalytic activity to degrade textile dyes and without a need for a post-separation process after the use. For this, nickel oxide nanoparticles (NiO NPs) were synthesized by a simple method in aqueous media. Then, NiO-doped polyaniline (PANI/NiO) with efficient absorption in the visible region (optical band gap of 2.08 eV) synthesized on a stainless steel substrate with electropolymerization of aniline in the aqueous media. The photocatalytic activity of PANI/NiO film was also investigated by the degradation of model dyes. Under UV and visible light irradiation, the PANI/NiO film degraded methylene blue and rhodamine B dyes entirely in 30 min. Moreover, the PANI/NiO film was also utilized to degrade real textile wastewater (RTW) without applying any pre-process; it was entirely decomposed by the nanocomposite film in only 45 min under UV light irradiation. The photocatalytic reaction rate of the pure PANI film is increased as 2.5 and 1.5 times with the addition of NiO NPs under UV and visible light irradiations for degradation RTW, respectively. The photocatalytic efficiency was attributed to reduced electron-hole pair recombination on the photocatalyst surface. Furthermore, the photocatalytic stability is discussed based on re-use experiments. The photocatalytic performance remains nearly unchanged, and the degradation of dyes is kept 94% after five cycles.
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Affiliation(s)
| | - Volkan Eskizeybek
- Department of Materials Science and Engineering, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Handan Kamış
- Department of Chemical Engineering, Konya Technical University, Konya, Turkey.
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Sampaio EFS, Rodrigues CSD, Lima VN, Madeira LM. Industrial wastewater treatment using a bubble photo-Fenton reactor with continuous gas supply. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:6437-6449. [PMID: 32997243 DOI: 10.1007/s11356-020-10741-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 09/06/2020] [Indexed: 06/11/2023]
Abstract
The present study assesses the treatability of a real industrial wastewater (WW) with a high organic load (chemical oxygen demand (COD) above 5800 mgO2 L-1) by photo-Fenton's oxidation with the goal of improving the organic matter degradation reached previously, in another work, where the Fenton process was applied in a bubbling reactor. Thus, the process was carried out in a bubble photo reactor (BPR) wherein continuous air supply ensures an efficient mixing of the liquid phase. The effect of the main operatory parameters that influence the WW treatment (i.e., H2O2 and Fe2+ concentrations, initial pH, and UV-Vis radiation intensity) were evaluated, being found that in the best conditions tested (pH0 = 4.6, [Fe2+] = 0.1 g L-1, [H2O2] = 18 g L-1, Qair = 1.0 L min-1-measured at room temperature and atmospheric pressure-and irradiance of 500 W m-2), removals of 95% and 97% for total organic carbon (TOC) and COD, respectively, were achieved. Still, a high reduction of the concentration of the main constituents of this WW was reached, being total for aniline and 86% for sulfanilic acid. The continuous air supply reactor configuration was compared with magnetic stirring; similar mineralization was achieved. However, the air bubbling promotes a good heat transfer within the reactor, minimizing temperature gradients, which is quite advantageous due to the strong exothermicity of the oxidation process during the treatment of such highly loaded real effluents.
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Affiliation(s)
- Emanuel F S Sampaio
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, 4200-465, Porto, Portugal
| | - Carmen S D Rodrigues
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, 4200-465, Porto, Portugal
| | - Vanessa N Lima
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, 4200-465, Porto, Portugal
| | - Luis M Madeira
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, 4200-465, Porto, Portugal.
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Chaturvedi A, Rai BN, Singh RS, Jaiswal RP. A comprehensive review on the integration of advanced oxidation processes with biodegradation for the treatment of textile wastewater containing azo dyes. REV CHEM ENG 2021. [DOI: 10.1515/revce-2020-0010] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Abstract
The threat of dye contamination has achieved an unsurpassed abnormal state lately due to their massive consumption in several enterprises including textile, leather, cosmetic, plastic, and paper industries. This review focuses on the integrations of various advanced oxidation processes (AOPs), such as Fenton, photocatalysis, and ozonation, with biodegradation for the treatment of textile azo dyes. Such integrations have been explored lately by researchers to bring down the processing cost and improve the degree of mineralization of the treated dyeing wastewater. The review refers to the basic mechanisms, the influence of various process parameters, outcomes of recent works, and future research directions. All the three AOPs, independently, demonstrated substantial color reduction of 54–100%. The ozonation process, stand-alone, showed the most efficient decolorization (of 88–100%) consistently in all reviewed research works. In contrast, all three AOPs independently offered varied and inadequate COD reduction in the range of 16–80%. The AOPs, after getting integrated with biodegradation, yielded an additional reduction (of 11–70%) in the COD-levels and (of 16–80%) in the TOC-levels. Further, the integration of AOPs with biodegradation has potential to significantly reduce the treatment costs. The review suggests further research efforts in the direction of sequencing chemical and biological routes such that their synergistic utilization yield complete detoxification of the textile azo dyes economically at large-scale.
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Affiliation(s)
- Anuj Chaturvedi
- Department of Chemical Engineering and Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi , Uttar Pradesh 221005 , India
| | - Birendra Nath Rai
- Department of Chemical Engineering and Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi , Uttar Pradesh 221005 , India
| | - Ram Saran Singh
- Department of Chemical Engineering and Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi , Uttar Pradesh 221005 , India
| | - Ravi Prakash Jaiswal
- Department of Chemical Engineering and Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi , Uttar Pradesh 221005 , India
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Solar Photo-Assisted Degradation of Bipyridinium Herbicides at Circumneutral pH: A Life Cycle Assessment Approach. Processes (Basel) 2020. [DOI: 10.3390/pr8091117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study investigated the degradation of the herbicides diquat (DQ) and paraquat (PQ) by a solar photo-Fenton process that is mediated by Fe(III)-oxalate complexes at circumneutral pH = 6.5 in compound parabolic collectors (CPC)-type reactors. The photo-Fenton process operates efficiently at acidic pH; however, circumneutral operation was key to overcome drawbacks, such as acidification and neutralization steps, reagent costs, and the environmental footprint of chemical auxiliaries. This work revealed a remarkable reduction of total organic carbon for PQ (87%) and DQ (80%) after 300 min (at ca. 875 kJ L−1). Phytotoxicity assays confirmed that the treatment led to a considerable increase in the germination index for DQ (i.e., from 4.7% to 55.8%) and PQ (i.e., from 16.5% to 59.7%) using Cucumis sativus seeds. Importantly, treatment costs (DQ = USD$8.05 and PQ = USD$7.72) and the carbon footprint of the process (DQ = 7.37 and PQ = 6.29 kg CO2-Eqv/m3) were within the ranges that were reported for the treatment of recalcitrant substances at acidic conditions in CPC-type reactors. Life cycle assessment (LCA) evidenced that H2O2 and electricity consumption are the variables with the highest environmental impact because they contribute with ca. 70% of the carbon footprint of the process. Under the studied conditions, a further reduction in H2O2 use is counterproductive, because it could impact process performance and effluent quality. On the other hand, the main drawback of the process (i.e., energy consumption) can be reduced by using renewable energies. The sensitivity study evidenced that carbon footprint is dependent on the energy share of the local electricity mix; therefore, the use of more renewable electrical energy sources, such as wind-power and photovoltaic, can reduce greenhouse gases emissions of the process an average of 26.4% (DQ = 5.57 and PQ = 4.51 kg CO2-Eqv/m3) and 78.4% (DQ = 3.72 and PQ = 2.65 kg CO2-Eqv/m3), respectively. Finally, from the economic and environmental points of view, the experimental results evidenced that photo-assisted treatment at circumneutral pH is an efficient alternative to deal with quaternary bipyridinium compounds.
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Degradation of recalcitrant organics in nanofiltration concentrate from biologically pretreated landfill leachate by ultraviolet-Fenton method. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116076] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Prato-Garcia D, Robayo-Avendaño A. Treatment of a synthetic colored effluent in raceway reactors: The role of operational conditions on the environmental performance of a photo-Fenton process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 697:134182. [PMID: 32380627 DOI: 10.1016/j.scitotenv.2019.134182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 08/23/2019] [Accepted: 08/28/2019] [Indexed: 06/11/2023]
Abstract
This study assessed the environmental and economic performance of a photo-Fenton process in a raceway reactor at laboratory scale. For the best operational condition (BOC) identified (dye = 55.0 mg/L, H2O2/dye = 0.862 mg/L, Fe2+/dye = 0.184) a carbon footprint (CFP) of 1.335 kg CO2 Eqv/m3 was obtained. Consumption of electrical energy, construction materials, and reagents represent 97.2% (1.298 kg CO2 Eqv/m3) of the CFP. Similarly, ReCiPe-2016 v1.1 evidenced that these activities play an important role on the environmental performance of the process because their relative impact ranged from 96.5% to 99.7% at least in 14 of the 18 categories considered by this method. It should be noted that the CFP is scarcely sensitive to variations in the use of cement, steel, H2O2, and NaOH as a 50.0% increase in their expenditure increases the CFP in 4.4%, 5.0%, 5.9%, and 7.2%, respectively. A 50.0% increment in electricity consumption increased the CFP in 20.7% whereas categories related to acidification, eutrophication, resources depletion, and toxicity-related impacts had significant increments (20.0%-34.0%) in the emissions of substances used for impact characterization. BOC led to the lowest treatment cost (US$0.540/m3) and a CFP between 5- and 10-times lower than that reported for solar tubular reactors. Also, higher proportions of H2O2 (H2O2/dye = 1.200-1.800) and Fe2+ (Fe2+/dye = 0.200-0.300) increased cost in 1.9%-5.6% but reduced the CFP in 1.2%-3.7%. Finally, our results evidenced that it is possible to increase the raceway reactor's capacity by increasing the depth of the reactor without affecting the effluent quality. When the depth of the reaction medium went from 3 cm to 6 cm, the treatment capacity (TC) was increased 102.4%, and a 33.3% diminution in the CFP and of 29.1% in the treatment cost occurred. An increase from 3 cm to 9 cm rose the TC up to 204.4% and reduced the CFP (44.4%) and treatment cost (39.3%).
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Affiliation(s)
- Dorian Prato-Garcia
- Universidad Nacional de Colombia, Sede Palmira, Facultad de Ingeniería y Administración, Carrera 32 No. 12 - 00, Chapinero, Vía Candelaria, Palmira, Valle del Cauca, Colombia.
| | - Angélica Robayo-Avendaño
- Universidad Santiago de Cali, Campus Pampalinda, Facultad de Ingeniería, Calle 5 No. 62-00, Cali, Valle del Cauca, Colombia
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Gautam K, Kamsonlian S, Kumar S. Removal of Reactive Red 120 dye from wastewater using electrocoagulation: optimization using multivariate approach, economic analysis, and sludge characterization. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1677713] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Kajal Gautam
- Department of Chemical Engineering, Motilal Nehru National Institute of Technology (MNNIT), Allahabad, India
| | - Suantak Kamsonlian
- Department of Chemical Engineering, Motilal Nehru National Institute of Technology (MNNIT), Allahabad, India
| | - Sushil Kumar
- Department of Chemical Engineering, Motilal Nehru National Institute of Technology (MNNIT), Allahabad, India
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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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Li F, Huang J, Xia Q, Lou M, Yang B, Tian Q, Liu Y. Direct contact membrane distillation for the treatment of industrial dyeing wastewater and characteristic pollutants. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.11.058] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Sun Z, Duan X, Srinivasakannan C, Liang J. Preparation of magnesium silicate/carbon composite for adsorption of rhodamine B. RSC Adv 2018; 8:7873-7882. [PMID: 35539118 PMCID: PMC9078478 DOI: 10.1039/c7ra12848g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 02/26/2018] [Accepted: 01/31/2018] [Indexed: 11/21/2022] Open
Abstract
The surface area and pore structure, electrostatic interaction and functional groups are the main adsorption mechanisms.
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Affiliation(s)
- Zhiwei Sun
- Key Laboratory of Special Functional Materials for Ecological Environment and Information
- Hebei University of Technology
- Ministry of Education
- Tianjin 300130
- China
| | - Xinhui Duan
- Key Laboratory of Special Functional Materials for Ecological Environment and Information
- Hebei University of Technology
- Ministry of Education
- Tianjin 300130
- China
| | - C. Srinivasakannan
- Chemical Engineering Department
- Khalifa University of Science and Technology
- The Petroleum Institute
- Abu Dhabi
- United Arab Emirates
| | - Jinsheng Liang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information
- Hebei University of Technology
- Ministry of Education
- Tianjin 300130
- China
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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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Starling MCVM, Dos Santos PHR, de Souza FAR, Oliveira SC, Leão MMD, Amorim CC. Application of solar photo-Fenton toward toxicity removal and textile wastewater reuse. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:12515-12528. [PMID: 27566160 DOI: 10.1007/s11356-016-7395-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 08/04/2016] [Indexed: 06/06/2023]
Abstract
Solar photo-Fenton represents an innovative and low-cost option for the treatment of recalcitrant industrial wastewater, such as the textile wastewater. Textile wastewater usually shows high acute toxic and variability and may be composed of many different chemical compounds. This study aimed at optimizing and validating solar photo-Fenton treatment of textile wastewater in a semi-pilot compound parabolic collector (CPC) for toxicity removal and wastewater reclamation. In addition, treated wastewater reuse feasibility was investigated through pilot tests. Experimental design performed in this study indicated optimum condition for solar photo-Fenton reaction (20 mg L-1 of Fe2+ and 500 mg L-1 of H2O2; pH 2.8), which achieved 96 % removal of dissolved organic carbon (DOC) and 99 % absorbance removal. A toxicity peak was detected during treatment, suggesting that highly toxic transformation products were formed during reaction. Toxic intermediates were properly removed during solar photo-Fenton (SPF) treatment along with the generation of oxalic acid as an ultimate product of degradation and COS increase. Different samples of real textile wastewater were treated in order to validate optimized treatment condition with regard to wastewater variability. Results showed median organic carbon removal near 90 %. Finally, reuse of treated textile wastewater in both dyeing and washing stages of production was successful. These results confirm that solar photo-Fenton, as a single treatment, enables wastewater reclamation in the textile industry. Graphical abstract Solar photo-Fenton as a revolutionary treatment technology for "closing-the-loop" in the textile industry.
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Affiliation(s)
- Maria Clara V M Starling
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Paulo Henrique Rodrigues Dos Santos
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Felipe Antônio Ribeiro de Souza
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Sílvia Corrêa Oliveira
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Mônica M D Leão
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Camila C Amorim
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil.
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Starling MCVM, Castro LAS, Marcelino RBP, Leão MMD, Amorim CC. Optimized treatment conditions for textile wastewater reuse using photocatalytic processes under UV and visible light sources. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:6222-6232. [PMID: 26865484 DOI: 10.1007/s11356-016-6157-8] [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: 11/27/2015] [Accepted: 01/20/2016] [Indexed: 06/05/2023]
Abstract
In this study, photo-Fenton systems using visible light sources with iron and ferrioxalate were tested for the DOC degradation and decolorization of textile wastewater. Textile wastewaters originated after the dyeing stage of dark-colored tissue in the textile industry, and the optimization of treatment processes was studied to produce water suitable for reuse. Dissolved organic carbon, absorbance, turbidity, anionic concentrations, carboxylic acids, and preliminary cost analysis were performed for the proposed treatments. Conventional photo-Fenton process achieved near 99 % DOC degradation rates and complete absorbance removal, and no carboxylic acids were found as products of degradation. Ferrioxalate photo-Fenton system achieved 82 % of DOC degradation and showed complete absorbance removal, and oxalic acid has been detected through HPLC analysis in the treated sample. In contrast, photo-peroxidation with UV light was proved effective only for absorbance removal, with DOC degradation efficiency near 50 %. Treated wastewater was compared with reclaimed water and had a similar quality, indicating that these processes can be effectively applied for textile wastewater reuse. The results of the preliminary cost analysis indicated costs of 0.91 to 1.07 US$ m-3 for the conventional and ferrioxalate photo-Fenton systems, respectively. Graphical Abstract ᅟ.
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Affiliation(s)
- Maria Clara V M Starling
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Luiz Augusto S Castro
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Rafaela B P Marcelino
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Mônica M D Leão
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Camila C Amorim
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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Ribeiro MCM, Starling MCVM, Leão MMD, de Amorim CC. Textile wastewater reuse after additional treatment by Fenton's reagent. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:6165-6175. [PMID: 27234833 DOI: 10.1007/s11356-016-6921-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/18/2016] [Indexed: 06/05/2023]
Abstract
This study verifies textile wastewater reuse treated by the conventional activated sludge process and subjected to further treatment by advanced oxidation processes. Three alternative processes are discussed: Fenton, photo-Fenton, and UV/H2O2. Evaluation of treatments effects was based on factorial experiment design in which the response variables were the maximum removal of COD and the minimum concentration of residual H2O2 in treated wastewater. Results indicated Fenton's reagent, COD/[H2O2]/[Fe2+] mass ratio of 1:2:2, as the best alternative. The selected technique was applied to real wastewater collected from a conventional treatment plant of a textile mill. The quality of the wastewater before and after the additional treatment was monitored in terms of 16 physicochemical parameters defined as suitable for the characterization of waters subjected to industrial textile use. The degradation of the wastewater was also evaluated by determining the distribution of its molecular weight along with the organic matter fractionation by ultrafiltration, measured in terms of COD. Finally, a sample of the wastewater after additional treatment was tested for reuse at pilot scale in order to evaluate the impact on the quality of dyed fabrics. Results show partial compliance of treated wastewater with the physicochemical quality guidelines for reuse. Removal and conversion of high and medium molecular weight substances into low molecular weight substances was observed, as well as the degradation of most of the organic matter originally present in the wastewater. Reuse tests indicated positive results, confirming the applicability of wastewater reuse after the suggested additional treatment. Graphical abstract Textile wastewater samples after additional treatment by Fenton's reagent, photo-Fenton and H2O2/UV tested in different conditions.
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Affiliation(s)
- Marília Cleto Meirelles Ribeiro
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, Bloco 1, Sala 4619, 31270-901, Belo Horizonte, MG, Brazil
| | - Maria Clara V M Starling
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, Bloco 1, Sala 4619, 31270-901, Belo Horizonte, MG, Brazil
| | - Mônica Maria Diniz Leão
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, Bloco 1, Sala 4619, 31270-901, Belo Horizonte, MG, Brazil
| | - Camila Costa de Amorim
- Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, Bloco 1, Sala 4619, 31270-901, Belo Horizonte, MG, Brazil.
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Rodrigues CS, Carabineiro S, Maldonado-Hódar F, Madeira LM. Wet peroxide oxidation of dye-containing wastewaters using nanosized Au supported on Al 2 O 3. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.06.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Governo M, Santos MSF, Alves A, Madeira LM. Degradation of the cytostatic 5-Fluorouracil in water by Fenton and photo-assisted oxidation processes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:844-854. [PMID: 27757752 DOI: 10.1007/s11356-016-7827-2] [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: 06/06/2016] [Accepted: 10/03/2016] [Indexed: 06/06/2023]
Abstract
Cytostatics are part of the forefront research topics due to their high prescription, high toxicity, and the lack of effective solutions to stop their entrance and spread in the environment. Among them, 5-Fluorouracil (5-Fu) has received particular attention because is one of the most prescribed active substances in chemotherapy worldwide. The degradation of 5-Fu by advanced oxidation processes (AOPs) is a poorly addressed topic, and this work brings valuable inputs concerning this matter. Herein, the efficacy of Fenton's process in the degradation of 5-Fu is explored for the first time; the study of the main variables and its successful application to the treatment of real wastewaters is demonstrated. Moreover, hydrogen peroxide-based and photo-assisted techniques (direct photolysis, photodegradation with H2O2 and photo-Fenton) are also investigated for purposes of comparison. Under the best operation conditions obtained (T = 30 °C, [Fe2+]0 = 0.5 mM; [H2O2]0 = 240 mM and pH = 3 for [5-Fu]0 = 0.38 mM), 5-Fu was completely eliminated after 2 h of Fenton's reaction and about 50 % of mineralization was reached after 8 h. The best performance was obtained by the photo-Fenton process, with 5-Fu mineralization level as high as 67 %, using an iron dose within the legal limits required for direct water discharge. Toxicity (towards Vibrio fischeri) of the effluents that resulted from the application of the above-mentioned AOPs was also evaluated; it was found that the degradation products generated from the photo-assisted processes are less toxic than the parent compound, putting into evidence the relevance of such technologies for degradation of cytostatics like 5-Fu.
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Affiliation(s)
- Mariana Governo
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, s/n, 4200-465, Porto, Portugal
| | - Mónica S F Santos
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, s/n, 4200-465, Porto, Portugal
| | - Arminda Alves
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, s/n, 4200-465, Porto, Portugal
| | - Luís M Madeira
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, s/n, 4200-465, Porto, Portugal.
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Minimizing the interference of carbonate ions on degradation of SRF3B dye by Fe0-aggregate-activated persulfate process. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.05.039] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Zhang J, Chen S, Zhang Y, Quan X, Zhao H, Zhang Y. Reduction of acute toxicity and genotoxicity of dye effluent using Fenton-coagulation process. JOURNAL OF HAZARDOUS MATERIALS 2014; 274:198-204. [PMID: 24793295 DOI: 10.1016/j.jhazmat.2014.04.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 03/11/2014] [Accepted: 04/14/2014] [Indexed: 06/03/2023]
Abstract
Dye wastewater exhibits significant ecotoxicity even though its physico-chemical parameters meet the discharge standards. In this work, the acute toxicity and genotoxicity of dye effluent were tested, and the Fenton-coagulation process was carried out to detoxify this dye effluent. The acute toxicity was evaluated according to the mortality rate of zebrafish, and genotoxicity was evaluated by micronucleus (MN) and comet assays. Removal of color and chemical oxygen demand (COD) was also investigated. The results indicated that the dye effluent showed strong acute toxicity and genotoxicity to zebrafish. After 4h of treatment by Fenton-coagulation process, the dye effluent exhibited no significant acute toxicity and genotoxicity to zebrafish. In addition, its COD was less than 50mg/L, which met the discharge standard. It demonstrates that Fenton-coagulation process can comprehensively reduce the acute toxicity and genotoxicity as well as the COD of the dye effluent.
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Affiliation(s)
- Jing Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China
| | - Shuo Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China
| | - Ying Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China
| | - Xie Quan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
| | - Huimin Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China
| | - Yaobin Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China
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