1
|
Bhattacharjee L, Xia C, Krouse E, Yang H, Liu J. Degradation of 1,4-dioxane by heterogeneous photocatalysis and a photo-Fenton-like process under fluorescent light. ENVIRONMENTAL TECHNOLOGY 2024; 45:2879-2890. [PMID: 36924262 DOI: 10.1080/09593330.2023.2192367] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
The overall objective of this study was to develop cost-effective treatment processes for 1,4-dioxane removal that were safe and easy to scale up. Degradation of 1,4-dioxane was conducted and compared for the first time by heterogeneous photocatalysis and a photo-Fenton-like process under cool white fluorescent light in mild conditions, using two types of commercial nanoparticles-titanium dioxide (TiO2) and nanoscale zero-valent iron (nZVI), respectively. Both types of nanoparticles removed >99.9% of 1,4-dioxane in a short period of time. Hydroxyl radicals (·OH), superoxide radicals (·O2-), and hydrogen peroxide (H2O2) were detected in both degradation processes; photogenerated holes (h+) were critical in the degradation of 1,4-dioxane by the photocatalytic process using TiO2. 1,4-Dioxane can be degraded at pH 7 in TiO2/light system and at pH 3 in nZVI/light system, and faster degradation of 1,4-dioxane at even higher concentration was achieved in the former system. Increase in light intensity accelerated 1,4-dioxane degradation, which followed first order kinetics in both systems. In wastewater effluent, the removal of 1,4-dioxane was slower than that in deionised water, which likely reflected the complex compositions of the wastewater effluent. Under combined UVA and visible light illumination, a two-stage degradation process was proposed for 1,4-dioxane for the first time by TiO2 nanoparticles; this study also demonstrated for the first time 1,4-dioxane degradation by the photo-Fenton-like process using nZVI. The cost-effective solutions using commercial nanoparticles under fluorescent light developed in this study can be potentially applied to treat water contaminated by high concentrations of 1,4-dioxane in large-scale.
Collapse
Affiliation(s)
- Linkon Bhattacharjee
- School of Civil, Environmental and Infrastructure Engineering, Southern Illinois University Carbondale, Carbondale, IL, USA
| | - Chunjie Xia
- School of Civil, Environmental and Infrastructure Engineering, Southern Illinois University Carbondale, Carbondale, IL, USA
- Paul H. O'Neill School of Public and Environmental Affairs, Indiana University Bloomington, Bloomington, IN, USA
| | - Ethan Krouse
- Department of Mechanical Engineering, University of Evansville, Evansville, IN, USA
| | - Haoran Yang
- School of Civil, Environmental and Infrastructure Engineering, Southern Illinois University Carbondale, Carbondale, IL, USA
| | - Jia Liu
- School of Civil, Environmental and Infrastructure Engineering, Southern Illinois University Carbondale, Carbondale, IL, USA
| |
Collapse
|
2
|
Gupta RK, Alzayed MA, Aba Alkhayl AA, Bedaiwi TS. Effect of Light Sources on Transmittance of Commercially Available Contact Lenses. Cureus 2024; 16:e62093. [PMID: 38989385 PMCID: PMC11236423 DOI: 10.7759/cureus.62093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/01/2024] [Indexed: 07/12/2024] Open
Abstract
BACKGROUND Previous studies have suggested that light rays may interact with contact lenses, potentially affecting their transmittance. AIM This study aimed to investigate the effects of visible and ultraviolet (UV)-A light sources on the transmittance of some commercially available daily, weekly, and monthly contact lenses. METHODS Nine commercially available soft contact lenses were irradiated with a solar simulator, light-emitting diode (LED) source, laser source, and UV-A source. The average transmittance of the tested lenses before and after irradiation in the UV, visible, and infrared light wavelength ranges was determined using an Agilent UV-visible spectrophotometer, model 8453. RESULTS The results showed a partial or complete block of UV transmission at the UV-B region (300 nm) and the UV-A region (355 nm) by the Bio true daily contact lens, as well as the Acuvue Oasys, Avaira, and Biomedics 55 weekly lenses. At the visible region (555 nm), irradiation of the contact lenses by different light sources resulted in reduced light transmittance. At the infrared region (900 nm), the weekly and monthly contact lenses partially blocked infrared transmission, while the daily lenses showed either increased or decreased infrared transmission. CONCLUSIONS Solar and artificial lighting, as well as high-powered lasers, constitute a major concern on the contact lenses' light transmission and optical properties. It is essential to develop soft contact lenses that have photoprotective properties while maintaining visible light transmittance.
Collapse
Affiliation(s)
- Ravindra K Gupta
- Optometry Department, College of Applied Medical Sciences, King Saud University, Riyadh, SAU
| | - Mohammed A Alzayed
- Diagnostic Imaging Department, King Khaled Eye Specialist Hospital, Riyadh, SAU
| | | | - Thafer S Bedaiwi
- Diagnostic Imaging Department, King Khaled Eye Specialist Hospital, Riyadh, SAU
| |
Collapse
|
3
|
da Silva ES, Starling MCVM, Amorim CC. LED-irradiated photo-Fenton process on pollutant removal: outcomes, trends, and limitations. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-29941-4. [PMID: 37831245 DOI: 10.1007/s11356-023-29941-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/13/2023] [Indexed: 10/14/2023]
Abstract
This manuscript critically reviews the state of the art on the application of photo-Fenton processes irradiated by light-emitting diode arrays (LED) with a focus on the removal of contaminants of emerging concern (CEC) from aqueous matrices. LEDs are clean, low-cost radiation sources with longer lifespan compared to mercury lamps. This study covers the influence of LED sources, wavelengths, and dose upon CEC removal, and the potential for disinfection, abatement of antibiotic-resistant bacteria (ARB), and genes (ARG). The bibliographic search was performed in Scopus database using keyword combinations and resulted in a portfolio containing 52 relevant articles published between 2010-2023. According to reviewed papers, LED photoreactor design has evolved in the past decade aiming to improve CEC degradation in aqueous matrices while reducing construction and operation costs, and energy consumption. Among several reactors (annular, fluidized bed, parallel plate, wireless, pathway systems, and microreactor) surveyed for their performance and scalability, LED chips and strips are particularly suitable for application due to their wide emission angle (≈120°) and small size (mm2), which allow for, respectively, efficient illumination coverage and flexible arrangement and design. LED microreactors are very efficient in the degradation of contaminants and scalable with reduced area requirements. Although most studies were performed in synthetic solutions and at laboratory scale, the externally LED irradiated cylindrical reactor was successful for application in full-scale municipal water treatment plants. Future studies should focus on evaluating CEC removal in wastewater using scalable devices for continuous operation of solar photo-Fenton at night.
Collapse
Affiliation(s)
- Eloísa Stéphanie da Silva
- Research Group On Environmental Applications of Advanced Oxidation Processes (GruPOA), Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Maria Clara Vieira Martins Starling
- Research Group On Environmental Applications of Advanced Oxidation Processes (GruPOA), Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Camila Costa Amorim
- Research Group On Environmental Applications of Advanced Oxidation Processes (GruPOA), Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
| |
Collapse
|
4
|
Mangood AH, Gemeay AH, Abdel-Galeil MM, Salama ES, El-Shater RE. Evaluation of synergistic approach of spinel cadmium-copper nanoferrites as magnetic catalysts for promoting wastewater decontamination: Impact of Ag ions doping. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:106876-106893. [PMID: 37145354 PMCID: PMC10611890 DOI: 10.1007/s11356-023-27170-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 04/18/2023] [Indexed: 05/06/2023]
Abstract
Metal substitution is an efficient strategy to improve the catalytic activity of ferrite-based catalysts. In this study, Cd0.5Cu0.5-xAgxFe2O4 (where 0 ≤ x ≤ 0.5) ferrites were fabricated via a simple co-precipitation method. The influence of the silver ions on the structural, magnetic, and catalytic characteristics of the spinel nanoparticles, as well as on their morphology, was examined. X-ray diffractograms revealed a crystalline cubic spinel structure with crystallite sizes in the nanoregime (7-15 nm). The saturation magnetization reduced from 29.8 to 2.80 emu as the Ag+ doping increased. Two prominent absorption bands were visible in Fourier-transform infrared spectra at 600 cm-1 and 400 cm-1, respectively, and they belonged to the tetrahedral (A) and octahedral (B) sites. The samples were then used as catalysts for the oxidative breakdown of the typical organic contaminant indigo carmine dye (IC). The catalytic process followed the first-order kinetic model, and the rate constant increased from 0.007 to 0.023 min-1 with increasing of Ag+ doping. Cd0.5Cu0.5-xAgxFe2O4 exhibited excellent catalytic performance in the pH range of 2-11, which means that they are promising efficient and stable materials for Fenton-based alkaline wastewater treatment. Finally, the pathway includes, HO•, HO2-•, and O2-• as oxidants resulted from the synergistic effects of Fe3+, Cu2+, and Ag+, with H2O2 and surface hydroxyl groups have been proposed.
Collapse
Affiliation(s)
- Ahmed H Mangood
- Chemistry Department, Faculty of Science, Menofia University, Shabien Elkom, Egypt
| | - Ali H Gemeay
- Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt.
| | | | - Eman Sh Salama
- Chemistry Department, Faculty of Science, Menofia University, Shabien Elkom, Egypt
| | - Reda E El-Shater
- Physics Department, Faculty of Science, Tanta University, Tanta, Egypt
| |
Collapse
|
5
|
Conde JJ, Abelleira S, Estévez S, González-Rodríguez J, Feijoo G, Moreira MT. Improving the sustainability of heterogeneous Fenton-based methods for micropollutant abatement by electrochemical coupling. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 332:117308. [PMID: 36731404 DOI: 10.1016/j.jenvman.2023.117308] [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: 09/19/2022] [Revised: 01/01/2023] [Accepted: 01/13/2023] [Indexed: 06/18/2023]
Abstract
Advanced oxidation processes such as Fenton reaction-based processes have attracted great interest in recent years as a promising alternative for the removal of persistent pollutants in wastewater. The use of nanocatalysts in advanced oxidation processes overcomes the limitations of homogeneous Fenton processes, where acidic pH values are required, and a large amount of sludge is generated after treatment. Aiming at maximizing the catalytic potential of the process, different configurations include coupling photocatalysis or electrochemistry to Fenton reactions. This manuscript presents a comparative environmental and economic analysis of different heterogeneous Fenton-based process using magnetic nanoparticles: Fenton, photo-Fenton, electro-Fenton and photoelectron-Fenton. These alternatives encompass not only different reaction conditions but also varying degradation kinetics, which control the treatment capability in each specific case. It is not only important to determine the technological feasibility of the proposal based on the removal performance of the target compounds, but also to identify the environmental profile of each configuration. In this regard, the Life Cycle Assessment methodology was applied considering a combination of primary and secondary data from process modeling. Moreover, and aiming towards the future large-scale implementation of the technology, an economic analysis of each configuration was also performed to provide a better understanding about the costs associated to the operation of Fenton-based wastewater treatments.
Collapse
Affiliation(s)
- Julio J Conde
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - Santiago Abelleira
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Sofia Estévez
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Jorge González-Rodríguez
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Gumersindo Feijoo
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Maria Teresa Moreira
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| |
Collapse
|
6
|
Natesan G, Rajappan K. GO-CuO nanocomposites assimilated into CA-PES polymer membrane in adsorptive removal of organic dyes from wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:42658-42678. [PMID: 35821317 DOI: 10.1007/s11356-022-21821-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
Textile industries are one of the leading environmental pollutants by releasing harmful dye effluents. In many textile distrts, the amount of excess color in treated textile effluent that exceeds regulatory limitations is still being a major concern. The combining usage of nanomaterials and polymer material to solve these issues using various techniques. In this research, graphene oxide-copper oxide (GO-CuO) nanomaterial have been incorporated into cellulose-acetate (CA), poly-ether sulfone (PES) blend polymer by using phase inversion process to fabricate thin film nanocomposite (TFN) membrane for removal of dye pollutant. The physiochemical properties of prepared TFN materials were studied by Fourier transform infra-red spectroscopy (FT-IR), X-ray diffractometer (XRD), field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), thermo gravimetric analysis (TGA), and mechanical strength analysis. Dye adsorption experiments were performed with four typical water-soluble organic dyes methylene blue (MB), rhodamine blue (Rh. B), methyl orange (MO) and Congo red (CR). After reaching adsorption equilibrium, the composite membrane final removal effectiveness for MB 92.42%, Rh. B 89.39%, CR 68.39%, and MO 58.82% respectively. As a result, the fabricated TFN material proves to be an effective adsorbent material for cationic dye molecules. Also, when the fabricated material was tested with textile industry effluent sample, all physio-chemical properties exhibited a considerable decrease in concentrations when compared to the real textile effluent concentration. The treated effluents permitted for a relatively greater growth and germination index of Tropical amaranth roots than the textile effluent, this demonstrates that phytotoxicity testing was also successful. The most effective temperature, concentration and pH were found to be 273 K, 1 × 10-5 M and pH 9. The fabricated TFN membrane material (GO-CuO @ CA-PES) can be recommended for water treatment applications.
Collapse
Affiliation(s)
- Gowriboy Natesan
- Department of Chemistry SRM Institute of Science & Technology, Kattankulathur, Chengalpattu, 603203, India
| | - Kalaivizhi Rajappan
- Department of Chemistry SRM Institute of Science & Technology, Kattankulathur, Chengalpattu, 603203, India.
| |
Collapse
|
7
|
Dos Santos PNF, de Holanda RM, de Souza ZSB, de Moraes CM, da Silva MP, Carvalho MN. Synthesis of TiO 2 graphene oxide-based material for textile effluent decontamination: characterization, kinetic, and mechanism studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:30358-30370. [PMID: 36434462 DOI: 10.1007/s11356-022-24179-y] [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: 06/06/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
In this work, a hydrothermal method was proposed to fabricate a nanomaterial composed of titanium dioxide and graphene oxide (10 wt%) (TiO2-GO). The GO was synthesized according to the modified Hummers and Offeman method, followed by exfoliation. Several characterization analyses were performed in order to investigate the structure, functional groups, and elemental composition of the nanomaterial. XRD analysis showed that the presence of GO does not change the crystalline structure of TiO2. FTIR evidenced the characteristic peaks present in both precursor materials (TiO2 and GO) and EDX confirmed the presence of GO on the TiO2-GO material. The nanomaterial was used as a photocatalyst in the TWW treatment, where the color and COD removal and the decrease of the characteristic peaks presented in the UV-Vis spectrum were investigated. The dosages of TiO2-GO and pH were studied to find the optimum operating condition. The results revealed that 0.5 g of photocatalyst with an initial pH of 3 achieve the best results under UV-A radiation. The kinetic test shows a COD removal of 87% after 90 min. The reuse test shows a decrease in COD removal after four cycles attributed to the deposition of some oxidized compounds on the catalyst surface. Finally, the efficiency of the photocatalyst was evaluated under solar radiation and it was shown that despite the good results, the performance of the TiO2-GO was better under UV-A radiation.
Collapse
Affiliation(s)
- Patrícia Nazaré Ferreira Dos Santos
- Technology Rural Department, Federal Rural University of Pernambuco (UFRPE), Dom Manuel de Medeiros St, Dois Irmãos, Zip Code: 52171-900, Recife/PE, Brazil.
| | - Romildo Morant de Holanda
- Technology Rural Department, Federal Rural University of Pernambuco (UFRPE), Dom Manuel de Medeiros St, Dois Irmãos, Zip Code: 52171-900, Recife/PE, Brazil
| | - Ziani Santana Bandeira de Souza
- Department of Chemical Engineering, Federal University of Pernambuco (UFPE), CidadeUniversitária, 1235 Prof. Moraes Rego AvZip Code: 50670-901, Recife/PE, Brazil
- Department of Mechanical Engineering, École de Technologie Supérieure (ÉTS), 1100 Notre-Dame St, Montreal, QC, H3C 1K3, Canada
| | - Cristiane Marcelina de Moraes
- Department of Chemical Engineering, Federal University of Pernambuco (UFPE), CidadeUniversitária, 1235 Prof. Moraes Rego AvZip Code: 50670-901, Recife/PE, Brazil
| | - Maryne Patrícia da Silva
- Department of Chemical Engineering, Federal University of Pernambuco (UFPE), CidadeUniversitária, 1235 Prof. Moraes Rego AvZip Code: 50670-901, Recife/PE, Brazil
| | - Marilda Nascimento Carvalho
- Technology Rural Department, Federal Rural University of Pernambuco (UFRPE), Dom Manuel de Medeiros St, Dois Irmãos, Zip Code: 52171-900, Recife/PE, Brazil
| |
Collapse
|
8
|
Tursi A, Baratta M, Easton T, Chatzisymeon E, Chidichimo F, De Biase M, De Filpo G. Microplastics in aquatic systems, a comprehensive review: origination, accumulation, impact, and removal technologies. RSC Adv 2022; 12:28318-28340. [PMID: 36320515 PMCID: PMC9531539 DOI: 10.1039/d2ra04713f] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 09/29/2022] [Indexed: 11/30/2022] Open
Abstract
Although the discovery of plastic in the last century has brought enormous benefits to daily activities, it must be said that its use produces countless environmental problems that are difficult to solve. The indiscriminate use and the increase in industrial production of cleaning, cosmetic, packaging, fertilizer, automotive, construction and pharmaceutical products have introduced tons of plastics and microplastics into the environment. The latter are of greatest concern due to their size and their omnipresence in the various environmental sectors. Today, they represent a contaminant of increasing ecotoxicological interest especially in aquatic environments due to their high stability and diffusion. In this regard, this critical review aims to describe the different sources of microplastics, emphasizing their effects in aquatic ecosystems and the danger to the health of living beings, while examining, at the same time, those few modelling studies conducted to estimate the future impact of plastic towards the marine ecosystem. Furthermore, this review summarizes the latest scientific advances related to removal techniques, evaluating their advantages and disadvantages. The final purpose is to highlight the great environmental problem that we are going to face in the coming decades, and the need to develop appropriate strategies to invert the current scenario as well as better performing removal techniques to minimize the environmental impacts of microplastics.
Collapse
Affiliation(s)
- Antonio Tursi
- Department of Chemistry and Chemical Technologies, University of Calabria Via P. Bucci, Cubo 15D, 87036 Arcavacata di Rende (CS) Italy
| | - Mariafrancesca Baratta
- Department of Chemistry and Chemical Technologies, University of Calabria Via P. Bucci, Cubo 15D, 87036 Arcavacata di Rende (CS) Italy
| | - Thomas Easton
- School of Engineering, Institute for Infrastructure and Environment, University of Edinburgh The King's Buildings Edinburgh EH9 3JL UK
| | - Efthalia Chatzisymeon
- School of Engineering, Institute for Infrastructure and Environment, University of Edinburgh The King's Buildings Edinburgh EH9 3JL UK
| | - Francesco Chidichimo
- Department of Environmental Engineering, University of Calabria Via P. Bucci, Cubo 42B, 87036 Arcavacata di Rende (CS) Italy
| | - Michele De Biase
- Department of Environmental Engineering, University of Calabria Via P. Bucci, Cubo 42B, 87036 Arcavacata di Rende (CS) Italy
| | - Giovanni De Filpo
- Department of Chemistry and Chemical Technologies, University of Calabria Via P. Bucci, Cubo 15D, 87036 Arcavacata di Rende (CS) Italy
| |
Collapse
|
9
|
Conte LO, Dominguez CM, Checa-Fernandez A, Santos A. Vis LED Photo-Fenton Degradation of 124-Trichlorobenzene at a Neutral pH Using Ferrioxalate as Catalyst. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:9733. [PMID: 35955089 PMCID: PMC9367996 DOI: 10.3390/ijerph19159733] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Chlorinated organic compounds (COCs) are among the more toxic organic compounds frequently found in soil and groundwater. Among these, toxic and low-degradable chlorobenzenes are commonly found in the environment. In this work, an innovative process using hydrogen peroxide as the oxidant, ferrioxalate as the catalyst and a visible light-emitting diode lamp (Vis LED) were applied to successfully oxidize 124-trichlorobenzene (124-TCB) in a saturated aqueous solution of 124-TCB (28 mg L-1) at a neutral pH. The influence of a hydrogen peroxide (HP) concentration (61.5-612 mg L-1), Fe3+ (Fe) dosage (3-10 mg L-1), and irradiation level (Rad) (I = 0.12 W cm-2 and I = 0.18 W cm-2) on 124-TCB conversion and dechlorination was studied. A D-Optimal experimental design combined with response surface methodology (RSM) was implemented to maximize the quality of the information obtained. The ANOVA test was used to assess the significance of the model and its coefficients. The maximum pollutant conversion at 180 min (98.50%) was obtained with Fe = 7 mg L-1, HP = 305 mg L-1, and I = 0.12 W cm-2. The effect of two inorganic anions usually presents in real groundwater (bicarbonate and chloride, 600 mg L-1 each) was investigated under those optimized operating conditions. A slight reduction in the 124-TCB conversion after 180 min of reaction was noticed in the presence of bicarbonate (8.31%) and chloride (7.85%). Toxicity was studied with Microtox® (Azur Environmental, Carlsbad, CA, USA) bioassay, and a remarkable toxicity decrease was found in the treated samples, with the inhibition proportional to the remaining 124-TCB concentration. That means that nontoxic byproducts are produced in agreement with the high dechlorination degrees noticed.
Collapse
Affiliation(s)
- Leandro O. Conte
- Chemical Engineering and Materials Department, Chemical Sciences Faculty, Complutense University of Madrid, 28040 Madrid, Spain
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) and Universidad Nacional del Litoral (UNL), Santa Fe 3100, Argentina
| | - Carmen M. Dominguez
- Chemical Engineering and Materials Department, Chemical Sciences Faculty, Complutense University of Madrid, 28040 Madrid, Spain
| | - Alicia Checa-Fernandez
- Chemical Engineering and Materials Department, Chemical Sciences Faculty, Complutense University of Madrid, 28040 Madrid, Spain
| | - Aurora Santos
- Chemical Engineering and Materials Department, Chemical Sciences Faculty, Complutense University of Madrid, 28040 Madrid, Spain
| |
Collapse
|
10
|
Liang S, Ziyu Z, Fulong W, Maojuan B, Xiaoyan D, Lingyun W. Activation of persulfate by mesoporous silica spheres-doping CuO for bisphenol A removal. ENVIRONMENTAL RESEARCH 2022; 205:112529. [PMID: 34883081 DOI: 10.1016/j.envres.2021.112529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 12/01/2021] [Accepted: 12/04/2021] [Indexed: 06/13/2023]
Abstract
In the present work, mesoporous silica spheres-doping CuO (CuO/MSS) was prepared via a facile hydrothermal method. It acted as a peroxydisulfate (PDS) activator for the removal of bisphenol A (BPA). X-Ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM), and energy dispersive X-ray spectroscopy (EDS) showed that CuO was successfully synthesized and silica spheres were doped in CuO. Nitrogen sorption isotherm showed that CuO/MSS, which had a high specific surface area and a narrow pore size distribution, exhibited a mesoporous structure. The effect of initial pH, PDS dosage, catalyst amount, and activation temperature was assessed. A removal efficiency of over 80% was observed after five consecutive cycles, suggesting the superior stability of the catalyst. X-ray photoelectron spectroscopy (XPS), radical quenching experiments, and electrochemical evaluation showed that BPA removal was dominated by the electron transfer among PDS, BPA, and the surface of CuO/MSS (non-radical pathway), while SO4·- and OH· radicals had a minor contribution (radical pathway). In addition, the degradation pathways of BPA were proposed according to the intermediates. Overall, this study indicates that CuO/MSS is a promising effective PDS activator to address the drawbacks of the classical Fenton process.
Collapse
Affiliation(s)
- Sun Liang
- School of Environment and Safety Engineering, Qingdao University of Science and Technology, Shandong, Qingdao, 266042, PR China
| | - Zhang Ziyu
- School of Environment and Safety Engineering, Qingdao University of Science and Technology, Shandong, Qingdao, 266042, PR China
| | - Wang Fulong
- School of Environment and Safety Engineering, Qingdao University of Science and Technology, Shandong, Qingdao, 266042, PR China
| | - Bai Maojuan
- School of Environment and Safety Engineering, Qingdao University of Science and Technology, Shandong, Qingdao, 266042, PR China.
| | - Deng Xiaoyan
- School of Environment and Safety Engineering, Qingdao University of Science and Technology, Shandong, Qingdao, 266042, PR China
| | - Wang Lingyun
- Key Laboratory of Clean Chemical Processing Engineering of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Shandong, Qingdao, 266042, PR China.
| |
Collapse
|
11
|
Intensification strategies for thermal H2O2-based advanced oxidation processes: Current trends and future perspectives. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2021.100228] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
12
|
Bilici Z, Saleh M, Yabalak E, Khataee A, Dizge N. The effect of different types of AOPs supported by hydrogen peroxide on the decolorization of methylene blue and viscose fibers dyeing wastewater. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 85:77-89. [PMID: 35050867 DOI: 10.2166/wst.2021.501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Wastewater from the textile industry containing a high concentration of organic and inorganic chemicals has strong color and residual chemical oxygen demand (COD). Therefore, advanced oxidation processes (AOPs) are very good candidates to treat textile industry wastewater. In this study, we investigated the effect of different types of AOPs supported with hydrogen peroxide (H2O2) for the treatment of viscose fibers dyeing wastewater. Fenton, photo-Fenton, and Fenton-supported subcritical water oxidation (FSWO) processes were chosen as AOPs to compare the treatment efficiency of viscose fibers dyeing wastewater. The effects of solution pH, Fe2+ concentration, and H2O2 concentration on the treatment of viscose fibers dyeing wastewater were tested. The maximum color and COD removal efficiency was obtained corresponding to pH 2.5 for all oxidation methods when methylene blue (MB) dye solution was used. However, the maximum efficiencies were obtained at pH 3.0 for real textile wastewater decolorization. The MB dye removal efficiency was increased to 97.22, 100, and 100% for Fenton, photo-Fenton, and FSWO processes, respectively, when the addition of H2O2 concentration was adjusted to 125 mg/L. However, the maximum color removal efficiencies of viscose fibers dyeing wastewater were obtained 56.94, 61.26, 64.11% for Fenton, photo-Fenton, FSWO processes, respectively. As a result, the FSWO showed maximum color removal efficiencies.
Collapse
Affiliation(s)
- Zeynep Bilici
- Department of Environmental Engineering, Mersin University, Mersin 33343, Turkey E-mail:
| | - Mohammed Saleh
- National Agricultural Research Center (NARC), Jenin, Palestine
| | - Erdal Yabalak
- Department of Chemistry, Mersin University, Mersin 33343, Turkey
| | - Alireza Khataee
- Department of Environmental Engineering, Gebze Technical University, Gebze 41400, Turkey; Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
| | - Nadir Dizge
- Department of Environmental Engineering, Mersin University, Mersin 33343, Turkey E-mail:
| |
Collapse
|