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Jaffari ZH, Na S, Abbas A, Park KY, Cho KH. Digital imaging-in-flow (FlowCAM) and probabilistic machine learning to assess the sonolytic disinfection of cyanobacteria in sewage wastewater. JOURNAL OF HAZARDOUS MATERIALS 2024; 468:133762. [PMID: 38402678 DOI: 10.1016/j.jhazmat.2024.133762] [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: 11/22/2023] [Revised: 01/25/2024] [Accepted: 02/08/2024] [Indexed: 02/27/2024]
Abstract
Assessing the cyanobacteria disinfection in sewage and its compliance with international-standards requires determining the concentration and viability, which can be achieve using Imaging Flow Cytometry device called FlowCAM. The objective is to thoroughly investigate the sonolytic morphological changes and disinfection-performance towards toxic cyanobacteria existing in sewage using the FlowCAM. After optimizing the process conditions, over 80% decline in cyanobacterial cell counts was observed, accompanied by an additional 10-15% of cells exhibiting injuries, as confirmed through morphological investigation. Moreover, for the first time, the experimentally collected data was utilized to build deep-learning probabilistic-neural-networks (PNN) and natural-gradient-boosting (NGBoost) models for predicting disinfection efficiency and ABD area as target outputs. The findings suggest that the NGBoost model exhibited superior prediction performance for both targets, with high test coefficient of determination (R2 > 0.87) and lower test errors (RMSE < 7.10, MAE < 4.14). The confidence interval examination in NGBoost prediction performance showed a minute variation from the experimentally calculated values, suggesting a high accuracy in model prediction. Finally, SHAP analysis suggests the sonolytic time alone contributes around 50% to the cyanobacteria disinfection. Overall, the findings demonstrate the effectiveness of the FlowCAM device and the potential of machine-learning modeling in predicting disinfection outcomes.
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Affiliation(s)
- Zeeshan Haider Jaffari
- Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Seongyeon Na
- Department of Civil, Urban, Earth and Environmental Engineering, Ulsan National Institute of Science and Tehchnology (UNIST), UNIST-gil 50, Ulsan 44919, Republic of Korea
| | - Ather Abbas
- Physical Science and Engineering Division, 4700 King Abdullah University of Science and Technology, Thuwal, Mecca, Saudi Arabia
| | - Ki Young Park
- Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea.
| | - Kyung Hwa Cho
- School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul 02841, South Korea.
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2
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P Rayaroth M, Aubry O, Rabat H, Marilleau E, Gru Y, Hong D, Brault P. Degradation and transformation of carbamazepine in aqueous medium under non-thermal plasma oxidation process. CHEMOSPHERE 2024; 352:141449. [PMID: 38354864 DOI: 10.1016/j.chemosphere.2024.141449] [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: 04/21/2023] [Revised: 09/22/2023] [Accepted: 02/10/2024] [Indexed: 02/16/2024]
Abstract
Carbamazepine (CBZ) is a pharmaceutical compound detected in various water resources. With a view to removing this contaminant, the applicability of non-thermal plasma (NTP) oxidation process has been widely tested in recent years. This study utilized NTP from a dielectric barrier discharge reactor in the treatment of CBZ. NTP on the surface of a water sample containing 25 mg.L-1 of CBZ resulted in a removal efficiency of over 90% with an energy yield of 0.19 g. (kWh)-1. On the other hand, a rapid reduction in pH and an increase of conductivity and nitrate/nitrite ions concentration were observed during the degradation. The applied voltage amplitude significantly affected the removal efficiency and the energy yield as the degradation efficiency was 55%, 70%, and 72% respectively with an applied voltage of 8, 10, and 12 kV. The water matrices containing inorganic anions such as chloride and carbonate ions reduced the removal efficiency by scavenging the reactive species. Accordingly, a reduction in the removal efficiency was observed in tap water. The high-resolution mass spectrometry (HRMS) results revealed that both reactive oxygen and nitrogen species take part in the reaction process which yields many intermediate products including aromatic nitro-products. This study concluded that NTP can effectively degrade CBZ in both pure and tap water, but special attention must be paid to changes in the water quality parameters (pH, conductivity, and nitrate/nitrite ions) and the fate of nitro products.
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Affiliation(s)
- Manoj P Rayaroth
- GREMI, UMR 7344, CNRS, Université d'Orléans, 45067 Orléans, France; Department of Environmental Science, School of Science, GITAM (Deemed to be) University, Visakhapatnam, 530045, India.
| | - Olivier Aubry
- GREMI, UMR 7344, CNRS, Université d'Orléans, 45067 Orléans, France.
| | - Hervé Rabat
- GREMI, UMR 7344, CNRS, Université d'Orléans, 45067 Orléans, France
| | - Eloi Marilleau
- INOVALYS Vannes, 5 rue Denis Papin CS 20080, 56892 Saint-Avé, France
| | - Yvan Gru
- INOVALYS Nantes, Route de Gachet BP52703, 44327 Nantes Cedex 3, France; INOVALYS Tours, 3 rue de l'Aviation BP67357, 37073 Tours Cedex, France
| | - Dunpin Hong
- GREMI, UMR 7344, CNRS, Université d'Orléans, 45067 Orléans, France
| | - Pascal Brault
- GREMI, UMR 7344, CNRS, Université d'Orléans, 45067 Orléans, France
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3
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Nejumal KK, Satayev MI, Rayaroth MP, Arun P, Dineep D, Aravind UK, Azimov AM, Aravindakumar CT. Degradation studies of bisphenol S by ultrasound activated persulfate in aqueous medium. ULTRASONICS SONOCHEMISTRY 2023; 101:106700. [PMID: 38006821 PMCID: PMC10767634 DOI: 10.1016/j.ultsonch.2023.106700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/05/2023] [Accepted: 11/17/2023] [Indexed: 11/27/2023]
Abstract
The degradation of recalcitrant organic pollutants by sulphate radical (SO4•-) represents one of the most recent developments in oxidation-based water treatment. In most cases, persulfate (PS) acts as a precursor of sulphate radicals. This study employed ultrasound-activated PS to generate reactive species, facilitating the degradation of bisphenol S (BPS), a well-known contaminant of emerging concern (CECs). An ultrasound with a frequency of 620 kHz and 80 W power was utilised for the degradation studies. The applied oxidation system successfully resulted in the complete degradation of BPS in both pure and real environmental water samples. Additionally, the Chemical oxygen demand (COD) was reduced to an acceptable limit in both matrices, with a reduction of 85 % in pure water and 73 % in river water. The degradation was monitored by varying chemical parameters such as pH, inorganic ions, and organics concentration. The results indicate that under specific pH conditions, the degradation efficiency followed the order of pH 3 > 4 > 7 > 11. The presence of coexisting matrices suppressed the efficiency by scavenging the reactive species. Utilizing high-resolution mass spectrometry (HRMS) analysis, this study identified seven intermediate products during identified during the degradation of BPS. Furthermore, a comprehensive mechanism has been deduced for the transformation and degradation process. All the results presented in this study underscore the applicability of the US/PS system in the removal of CECs.
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Affiliation(s)
- K K Nejumal
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam 686560, Kerala, India
| | - M I Satayev
- M. Auezov South Kazakhstan University, Tauke Khan Avenue 5, 160012 Shymkent, Kazakhstan
| | - Manoj P Rayaroth
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam 686560, Kerala, India
| | - P Arun
- Inter University Instrumentation Center (IUIC), Mahatma Gandhi University, Kottayam 686560, Kerala, India
| | - D Dineep
- Inter University Instrumentation Center (IUIC), Mahatma Gandhi University, Kottayam 686560, Kerala, India
| | - Usha K Aravind
- School of Environmental Studies, Cochin University of Science & Technology (CUSAT), Kochi 682022, Kerala, India
| | - A M Azimov
- M. Auezov South Kazakhstan University, Tauke Khan Avenue 5, 160012 Shymkent, Kazakhstan
| | - C T Aravindakumar
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam 686560, Kerala, India; Inter University Instrumentation Center (IUIC), Mahatma Gandhi University, Kottayam 686560, Kerala, India.
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4
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Li Q, Wang M, Chen JQ, Liu X, Wang J, Mu Y. Vivianite-induced peroxymonosulfate activation for containment removal under dark conditions: Performance, mechanism and regeneration. WATER RESEARCH 2023; 233:119729. [PMID: 36801576 DOI: 10.1016/j.watres.2023.119729] [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: 11/21/2022] [Revised: 02/09/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
The performance and intrinsic mechanism of vivianite, a natural mineral containing structural Fe(II), for peroxymonosulfate (PMS) activation and pollutant degradation under dark conditions were comprehensively explored in this study. It was found that vivianite was able to efficiently activate PMS to degrade various pharmaceutical pollutants under dark conditions, in which the corresponding reaction rate constant of ciprofloxacin (CIP) degradation was 47- and 32-fold higher than that of magnetite and siderite, respectively. SO4·-, ·OH, Fe(IV) and electron-transfer processes were found in the vivianite-PMS system, while SO4·- was the main contributor to CIP degradation. Moreover, mechanistic explorations revealed that the Fe site on the surface of vivianite could bind PMS in the form of a bridge position, and thus vivianite could rapidly activate absorbed PMS due to its strong electron-donating ability. Additionally, it was illustrated that the used vivianite could be efficiently regenerated by either chemical or biological reduction. This study may provide an alternative application of vivianite in addition to phosphorus recovery from wastewater.
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Affiliation(s)
- Qi Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Mingzhou Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Jia-Qi Chen
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Xiaomeng Liu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, China.
| | - Jing Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Yang Mu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, China.
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Shah SWH, Hameed F, Ali Z, Muntha ST, Bibi I. Degradation of cosmetic ingredient methylparaben by zinc oxide nanoparticles, aided by sonication, light or a combination of sonication and light. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2022. [DOI: 10.1080/16583655.2022.2131992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Syed W. H. Shah
- Department of Chemistry, Hazara University, Mansehra, Pakistan
| | - Fateeha Hameed
- Department of Chemistry, Hazara University, Mansehra, Pakistan
| | - Zarshad Ali
- Department of Chemistry, Hazara University, Mansehra, Pakistan
| | | | - Iram Bibi
- Department of Chemistry, Hazara University, Mansehra, Pakistan
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6
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Li X, Song C, Sun B, Gao J, Liu Y, Zhu J. Kinetics of zero-valent iron-activated persulfate for methylparaben degradation and the promotion of Cl . JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 321:115973. [PMID: 36104884 DOI: 10.1016/j.jenvman.2022.115973] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/31/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Methylparaben (MP) is an emerging pollutant, and the optimal conditions and kinetics of MP degradation using nano-zero-valent iron-activated persulfate (nZVI/PDS) need to be further investigated. This paper firstly investigated the response surface methodology (RSM) analysis of MP degradation by the heterogeneous system nZVI/PDS and concluded that the initial pH had the most significant effect on MP degradation. The optimal experimental conditions predicted by the RSM were as follows: initial pH 2.75, [nZVI]0 = 2.87 mM, [PDS]0 = 2.18 mM (MP degradation level of 95.30%). First- and second-order kinetic fits were performed for different initial pH levels and different concentrations of MP, nZVI, and PDS. It was determined that k = 0.0365 min-1 (R2 = 0.984) when the initial pH was 3, [PDS]0 = 2 mM, [MP]0 = 20 mg L-1, and [nZVI]0 = 3 mM (MP degradation level of 94.25%). The rest of the conditions were more closely fitted to the second-order reactions. The effects of different concentrations of anions and humic acid (HA) on the MP degradation level and k were examined, and it was found that Cl- could promote MP degradation to 97.69% (increased by 3.65%) and increase the k in accordance with the first-order reaction kinetics (0.0780 min-1, R2 = 0.991). Finally, the analysis of intermediates revealed 5 reaction pathways and 7 reaction intermediates, which inferred a possible reaction mechanism with the recycling performance of nZVI. In this paper, the superiority of nZVI/PDS for the purposes of activating MP degradation was affirmed. The presence of Cl- can enhance the level of MP degradation was confirmed, which provides a new direction for future practical engineering applications.
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Affiliation(s)
- Xinxin Li
- Department of Environmental Science & Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Chuang Song
- Tieling Ecological Environment Bureau, Tieling, 112008, China
| | - Beibei Sun
- Sinopec Ningbo Engineering CO., LTD., Ningbo, 315000, China
| | - Jingsi Gao
- Shenzhen Key Laboratory of Industrial Water Saving and Urban Sewage Resources, School of Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen, 518055, China
| | - Yanping Liu
- Department of Environmental Science & Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Jia Zhu
- Shenzhen Key Laboratory of Industrial Water Saving and Urban Sewage Resources, School of Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen, 518055, China.
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7
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González-González RB, Rodríguez-Hernández JA, Araújo RG, Sharma P, Parra-Saldívar R, Ramirez-Mendoza RA, Bilal M, Iqbal HMN. Prospecting carbon-based nanomaterials for the treatment and degradation of endocrine-disrupting pollutants. CHEMOSPHERE 2022; 297:134172. [PMID: 35248594 DOI: 10.1016/j.chemosphere.2022.134172] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/21/2022] [Accepted: 02/27/2022] [Indexed: 02/08/2023]
Abstract
The presence of endocrine-disrupting chemicals (EDCs) in water resources has significant negative implications for the environment. Traditional technologies implemented for water treatment are not completely efficient for removing EDCs from water. Therefore, research on sustainable remediation has been mainly directed to novel decontamination approaches including nano-remediation. This emerging technology employs engineered nanomaterials to clean up the environment quickly, efficiently, and sustainably. Thus, nanomaterials have contributed to a wide variety of remediation techniques like adsorption, filtration, coagulation/flocculation, and so on. Among the vast diversity of decontamination technologies catalytic advanced oxidation processes (AOPs) outstand as simple, clean, and efficient alternatives. A vast diversity of catalysts has been developed demonstrating high efficiencies; however, the search for novel catalysts with enhanced performances continues. In this regard, nanomaterials used as nanocatalysts are exhibiting enhanced performances on AOPs due to their special nanostructures and larger specific surface areas. Therefore, in this review we summarize, compare, and discuss the recent advances on nanocatalysts, catalysts doped with metal-based nanomaterials, and catalysts doped with carbon-based nanomaterials on the degradation of EDCs. Finally, further research opportunities are identified and discussed to achieve the real application of nanomaterials to efficiently degrade EDCs from water resources.
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Affiliation(s)
| | | | - Rafael G Araújo
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico
| | - Pooja Sharma
- Department of Environmental Microbiology, School for Environmental Sciences, Babasaheb Bhimrao Ambedkar (A Central) University, Lucknow, 226 025, Uttar Pradesh, India
| | | | | | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico.
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8
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Oxidative Degradation of Pharmaceutical Waste, Theophylline, from Natural Environment. ATMOSPHERE 2022. [DOI: 10.3390/atmos13050835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
The elimination of organic contaminants from natural resources is extremely important to ensure their (re-)usability. In this report, the degradation of a model pharmaceutical compound, theophylline, is compared between natural and laboratory-controlled environments. While the concentration of H2O2 variably affected the degradation efficiency (approximately from 8 to 20 min for complete degradation) in the photo-irradiation experiments, the inorganic compounds (NaNO3, KH2PO4 and ZnSO4) present in the medium seemed to affect the degradation by scavenging hydroxyl radicals (•OH). The end-product studies using high-resolution mass spectrometry (HRMS) ruled out the involvement of secondary radicals in the degradation mechanism. The quantitative calculation with the help of authentic standards pointed out the predominant role of hydroxylation pathways, especially in the initial stages. Although a noticeable decline in the degradation efficiency was observed in river water samples (complete degradation after 25 min with an approximately 20% total organic carbon (TOC) removal), appreciable TOC removal (70%) was eventually achieved after prolonged irradiation (1 h) and in the presence of additional H2O2 (5 times), revealing the potential of our technique. The results furnished in this report could be considered as a preliminary step for the construction of •OH-based wastewater treatment methodologies for the remediation of toxic pollutants from the real environment.
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Bolujoko NB, Unuabonah EI, Alfred MO, Ogunlaja A, Ogunlaja OO, Omorogie MO, Olukanni OD. Toxicity and removal of parabens from water: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148092. [PMID: 34147811 DOI: 10.1016/j.scitotenv.2021.148092] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/04/2021] [Accepted: 05/24/2021] [Indexed: 05/06/2023]
Abstract
Parabens are biocides used as preservatives in food, cosmetics and pharmaceuticals. They possess antibacterial and antifungal activity due to their ability to disrupt cell membrane and intracellular proteins, and cause changes in enzymatic activity of microbial cells. Water, one of our most valuable natural resource, has become a huge reservoir for parabens. Halogenated parabens from chlorination/ozonation of water contaminated with parabens have shown to be even more persistent in water than other types of parabens. Unfortunately, there is dearth of data on their (halogenated parabens) presence and fate in groundwater which serves as a major source of drinking water for a huge population in developing countries. An attempt to neglect the presence of parabens in water will expose man to it through ingestion of contaminated food and water. Although there are reviews on the occurrence, fate and behaviour of parabens in the environment, they largely omit toxicity and removal aspects. This review therefore, presents recent reports on the acute and chronic toxicity of parabens, their estrogenic agonistic and antagonistic activity and also their relationship with antimicrobial resistance. This article further X-rays several techniques that have been employed for the removal of parabens in water and their drawbacks including adsorption, biodegradation, membrane technology and advanced oxidation processes (AOPs). The heterogeneous photocatalytic process (one of the AOPs) appears to be more favoured for removal of parabens due to its ability to mineralize parabens in water. However, more work is needed to improve this ability of heterogeneous photocatalysts. Perspectives that will be relevant for future scientific studies and which will drive policy shift towards the presence of parabens in our drinking waters are also offered. It is hoped that this review will elicit some spontaneous actions from water professionals, scientists and policy makers alike that will provide more data, effective technologies, and adaptive policies that will address the growing threat of the presence of parabens in our environment with respect to human health.
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Affiliation(s)
- Nathaniel B Bolujoko
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Nigeria; African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria
| | - Emmanuel I Unuabonah
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Nigeria; African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria.
| | - Moses O Alfred
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Nigeria; African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria
| | - Aemere Ogunlaja
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria; Department of Biological Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Nigeria
| | - Olumuyiwa O Ogunlaja
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria; Department of Chemical Sciences, Faculty of Basic Medical and Applied Sciences, Lead City University, Ibadan, Nigeria
| | - Martins O Omorogie
- Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Nigeria; African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria
| | - Olumide D Olukanni
- African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, PMB 230, Ede, Osun State, Nigeria; Department of Biochemistry, Faculty of Basic Medical Sciences, Redeemer's University, Ede, Nigeria
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Karim AV, Shriwastav A. Degradation of amoxicillin with sono, photo, and sonophotocatalytic oxidation under low-frequency ultrasound and visible light. ENVIRONMENTAL RESEARCH 2021; 200:111515. [PMID: 34129864 DOI: 10.1016/j.envres.2021.111515] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/08/2021] [Accepted: 05/30/2021] [Indexed: 06/12/2023]
Abstract
The presence of pharmaceutically active compounds in aquatic bodies is a global concern, and suitable treatment technologies are required. In this study, the efficacy of photocatalytic, sonocatalytic, and sonophotocatalytic oxidation processes for the degradation of amoxicillin (AMX) was investigated using visible light with N doped TiO2 (N-TiO2) nanoparticles as the catalyst and low-frequency ultrasound in a novel multifrequency reactor. The influence of different operational parameters on the extent of AMX degradation was studied. Sonophotocatalytic oxidation was found more efficient for AMX degradation when compared to photocatalysis or sonocatalysis alone, and may be due to the reduced bandgap of the catalyst, enhanced cavitation effect due to the presence of the solid catalyst, and improved mass transfer of pollutants. AMX degradation during sono, photo, and sonophotocatalytic oxidation processes was in good agreement with pseudo-first-order kinetics. Empirical kinetic models were also developed using multiple linear regression for predicting the degradation efficiency accounting for the operational parameters. Scavenger experiments suggested that •OH radicals largely contributed to AMX degradation, and a plausible mechanism for degradation was proposed. Further, possible degradation pathways for all three treatment processes are also proposed after identifying the degradation products.
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Affiliation(s)
- Ansaf V Karim
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai, 400 076, India
| | - Amritanshu Shriwastav
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai, 400 076, India.
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11
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Nguyen VH, Phan Thi LA, Chandana PS, Do HT, Pham TH, Lee T, Nguyen TD, Le Phuoc C, Huong PT. The degradation of paraben preservatives: Recent progress and sustainable approaches toward photocatalysis. CHEMOSPHERE 2021; 276:130163. [PMID: 33725624 DOI: 10.1016/j.chemosphere.2021.130163] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/17/2021] [Accepted: 03/01/2021] [Indexed: 05/06/2023]
Abstract
Parabens are a class of compounds primarily used as antimicrobial preservatives in pharmaceutical products, cosmetics, and foodstuff. Their widely used field leads to increasing concentrations detected in various environmental matrices like water, soil, and sludges, even detected in human tissue, blood, and milk. Treatment techniques, including chemical advanced oxidation, biological degradation, and physical adsorption processes, have been widely used to complete mineralization or to degrade parabens into less complicated byproducts. All kinds of processes were reviewed to give a completed picture of parabens removal. In light of these treatment techniques, advanced photocatalysis, which is emerging rapidly and widely as an economical, efficient, and environmentally-friendly technique, has received considerable attention. TiO2-based and non-TiO2-based photocatalysts play an essential role in parabens degradation. The effect of experimental parameters, such as the concentration of targeted parabens, concentration of photocatalyst, reaction time, and initial solution pH, even the presence of radical scavengers, are surveyed and compared from the literature. Some representative parabens such as methylparaben, propylparaben, and benzylparaben have been successfully studied the reaction pathways and their intermediates in their degradation process. As reported in the literature, the degradation of parabens involves the production of highly reactive species, mainly hydroxyl radicals. These reactive radicals would attack the paraben preservatives, break, and finally mineralize them into simpler inorganic and nontoxic molecules. Concluding perspectives on the challenges and opportunities for photocatalysis toward parabens remediation are also intensively highlighted.
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Affiliation(s)
- Van-Huy Nguyen
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
| | - Lan-Anh Phan Thi
- VNU Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam; Center for Environmental Technology and Sustainable Development (CETASD), University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam.
| | - P Sri Chandana
- Department of Civil and Environmental Engineering, Annamacharya Institute of Technology and Sciences, Kadapa, 516003, A.P., India.
| | - Huu-Tuan Do
- Faculty of Environmental Science, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam
| | - Thuy-Hanh Pham
- Faculty of Environmental Science, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam
| | - Taeyoon Lee
- Department of Environmental Engineering, College of Environmental and Marine, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Trinh Duy Nguyen
- Department of Environmental Engineering, College of Environmental and Marine, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea; Center of Excellence for Green Energy and Environmental Nanomaterials (CE GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam.
| | - Cuong Le Phuoc
- Department of Environmental Management, Faculty of Environment, The University of Da Nang - University of Science and Technology, Da Nang, 550000, Viet Nam
| | - Pham Thi Huong
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam; Faculty of Environment and Chemical Engineering, Duy Tan University, Danang, 550000, Viet Nam
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Paraben Compounds—Part II: An Overview of Advanced Oxidation Processes for Their Degradation. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11083556] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Water scarcity represents a problem for billions of people and is expected to get worse in the future. To guarantee people’s water needs, the use of “first-hand water” or the reuse of wastewater must be done. Wastewater treatment and reuse are favorable for this purpose, since first-hand water is scarce and the economic needs for the exploration of this type of water are increasing. In wastewater treatment, it is important to remove contaminants of emerging concern, as well as pathogenic agents. Parabens are used in daily products as preservatives and are detected in different water sources. These compounds are related to different human health problems due to their endocrine-disrupting behavior, as well as several problems in animals. Thus, their removal from water streams is essential to achieve safe reusable water. Advanced Oxidation Processes (AOPs) are considered very promising technologies for wastewater treatment and can be used as alternatives or as complements of the conventional wastewater treatments that are inefficient in the removal of such contaminants. Different AOP technologies such as ozonation, catalytic ozonation, photocatalytic ozonation, Fenton’s, and photocatalysis, among others, have already been used for parabens abatement. This manuscript critically overviews several AOP technologies used in parabens abatement. These treatments were evaluated in terms of ecotoxicological assessment since the resulting by-products of parabens abatement can be more toxic than the parent compounds. The economic aspect was also analyzed to evaluate and compare the considered technologies.
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Dielectric barrier discharge plasma with photocatalysts as a hybrid emerging technology for degradation of synthetic organic compounds in aqueous environments: A critical review. CHEMOSPHERE 2020; 263:128065. [PMID: 33297070 DOI: 10.1016/j.chemosphere.2020.128065] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 08/15/2020] [Accepted: 08/18/2020] [Indexed: 12/07/2022]
Abstract
Dielectric barrier discharge (DBD) plasma has been recently used for removal of synthetic organic compounds (SOCs) from aqueous environments. The removal of SOCs by alone DBD is significantly limited by its high electricity needs and inefficient mineralization, which affects the further application of DBD for SOCs. The combined application of DBD with other technologies and the addition of a supplementary substance for energy-saving were proposed to resolve these problems. The addition of catalysts is considered to be a promising and innovative approach to increase the energy yield of DBD, improve the environment friendly of DBD, develop the variety of goal SOCs, and improve the removal efficiency of DBD system. Despite the increasing use of the coupling form of DBD and catalysts, as catalytic dielectric barrier discharge (CDBD), but it still requires a comprehensive review to summarize the last studies and highlight the future perspectives in this area. Therefore, this work is the first literature review aimed to critically assess the latest developments of catalysts coupling with DBD employed in aqueous environments. Moreover, performance evaluation, energy yield, toxicity, eco-friendly, and future perspectives of the CDBD systems for SOCs removal were discussed and overviewed. The results showed that the coupling of catalysts with DBD presents synergistic effects and had excellent removal performance for aqueous SOCs. Overall, it can be concluded that the essential principles of environmental and economic sustainability have been addressed for the removal of persistent pollutants from aqueous environments in the CDBD systems.
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Hamdaoui O, Merouani S. Impact of seawater salinity on the sonochemical removal of emerging organic pollutants. ENVIRONMENTAL TECHNOLOGY 2020; 41:2305-2313. [PMID: 30585533 DOI: 10.1080/09593330.2018.1564071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 12/20/2018] [Indexed: 06/09/2023]
Abstract
The results presented in this study illustrate the multiple roles of seawater salinity toward the sonochemical degradation, at variable frequencies (300-1700 kHz), of several hazardous substances, i.e. propylparaben (PPR) endocrine disruptor and several synthetic dyes: naphthol blue black (NBB), malachite green (MG), basic red 29 (BR29), acid orange 7 (AO7), Rhodamine B (RhB) and basic fuchsin (BF). Sonochemical treatment degraded all pollutants in seawater at faster rates than in deionized water. The seawater-salts through increasing the ionic strength of the solution act as a potential pusher of hydrophilic pollutants toward the reactive interfacial area of cavitation bubbles. Additionally, the salts reduce the bubble coalescence, which yields higher number of active bubbles in the irradiating media. Analysing the degradation rate of PPR and NBB with two heterogeneous models based on Langmuir kinetics mechanism indicated that the bubble interfacial area was the preferred reaction zone for the ultrasonic degradation of PPR and NBB in seawater.
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Affiliation(s)
- Oualid Hamdaoui
- Laboratory of Environmental Engineering, Department of Process Engineering, Faculty of Engineering, Badji Mokhtar - Annaba University, Annaba, Algeria
| | - Slimane Merouani
- Laboratory of Environmental Engineering, Department of Process Engineering, Faculty of Engineering, Badji Mokhtar - Annaba University, Annaba, Algeria
- Department of Chemical Engineering, Faculty of Process Engineering, University Salah Boubnider - Constantine 3, Constantine, Algeria
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15
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Separation of Methylparaben by emulsion liquid membrane: Optimization, characterization, stability and multiple cycles studies. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124761] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Zanias A, Frontistis Z, Vakros J, Arvaniti OS, Ribeiro RS, Silva AMT, Faria JL, Gomes HT, Mantzavinos D. Degradation of methylparaben by sonocatalysis using a Co-Fe magnetic carbon xerogel. ULTRASONICS SONOCHEMISTRY 2020; 64:105045. [PMID: 32120238 DOI: 10.1016/j.ultsonch.2020.105045] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 01/21/2020] [Accepted: 02/24/2020] [Indexed: 05/26/2023]
Abstract
The degradation of methylparaben (MP) through 20 kHz ultrasound coupled with a bimetallic Co-Fe carbon xerogel (CX/CoFe) was investigated in this work. Experiments were performed at actual power densities of 25 and 52 W/L, catalyst loadings of 12.5 and 25 mg/L, MP concentrations between 1 and 4.2 mg/L and initial pH values between 3 and 10 in ultrapure water (UPW). Matrix effects were studied in bottled water (BW) and secondary treated wastewater (WW), as well as in UPW spiked with bicarbonate, chloride or humic acid. The pseudo-first order kinetics of MP degradation increase with power and catalyst loading and decrease with MP concentration and matrix complexity; moreover, the reaction is also favored at near-neutral conditions and in the presence of dissolved oxygen. The contribution of the catalyst is synergistic to the sonochemical degradation of MP and the extent of synergy is quantified to be >45%. This effect was ascribed to the ability of CX/CoFe to catalyze the dissociation of hydrogen peroxide, formed through water sonolysis, to hydroxyl radicals. Experiments in UPW spiked with an excess of tert-butanol (radical scavenger), sodium dodecyl sulfate or sodium acetate (surfactants) led to substantially decreased rates (i.e. by about 8 times), thus implying that the liquid bulk and the gas-liquid interface are major reaction sites. The stability of CX/CoFe was shown by performing reusability cycles employing magnetic separation of the catalyst after the treatment stage. It was found that the CX/CoFe catalyst can be reused in up to four successive cycles without noteworthy variation of the overall performance of the sonocatalytic process.
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Affiliation(s)
- Athanasios Zanias
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | - Zacharias Frontistis
- Department of Chemical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece
| | - John Vakros
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | - Olga S Arvaniti
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | - Rui S Ribeiro
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Adrián M T Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Joaquim L Faria
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Helder T Gomes
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Dionissios Mantzavinos
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece.
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17
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Characterization and stability study of pseudo-emulsion hollow fiber membrane: Separation of Ethylparaben. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124308] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Abidi J, Samet Y, Panizza M, Martinez‐Huitle CA, Carpanese MP, Clematis D. A Boron‐Doped Diamond Anode for the Electrochemical Removal of Parabens in Low‐Conductive Solution: From a Conventional Flow Cell to a Solid Polymer Electrolyte System. ChemElectroChem 2020. [DOI: 10.1002/celc.201901909] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jihen Abidi
- Laboratory Research of Toxicology-Microbiology Environmental and Health (LR17ES06) Science Faculty of SFAXUniversity of SFAX Road of Soukra km 4 3038 Sfax Tunisia
| | - Youssef Samet
- Laboratory Research of Toxicology-Microbiology Environmental and Health (LR17ES06) Science Faculty of SFAXUniversity of SFAX Road of Soukra km 4 3038 Sfax Tunisia
| | - Marco Panizza
- Department of Civil, Chemical and Environmental EngineeringUniversity of Genoa Via all'Opera Pia 15 16145 Genova Italy
| | - Carlos A. Martinez‐Huitle
- National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM)Institute of Chemistry, P.O. Box 355 14800-900 Araraquara, SP Brazil
| | - M. Paola Carpanese
- Department of Civil, Chemical and Environmental EngineeringUniversity of Genoa Via all'Opera Pia 15 16145 Genova Italy
| | - Davide Clematis
- Department of Civil, Chemical and Environmental EngineeringUniversity of Genoa Via all'Opera Pia 15 16145 Genova Italy
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19
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Arslan E, Hekimoglu BS, Cinar SA, Ince N, Aviyente V. Hydroxyl radical-mediated degradation of salicylic acid and methyl paraben: an experimental and computational approach to assess the reaction mechanisms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:33125-33134. [PMID: 31520381 DOI: 10.1007/s11356-019-06048-3] [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: 04/24/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Advanced oxidation processes (AOPs) using various energy sources and oxidants to produce reactive oxygen species are widely used for the destruction of recalcitrant water contaminants. The current study is about the degradation of two emerging pollutants-salicylic acid (SA) and methyl paraben (MP)-by high-frequency ultrasonication followed by identification of the oxidation byproducts and modeling of the reaction mechanisms using the density functional theory (DFT). The study also encompasses prediction of the aquatic toxicity and potential risk of the identified byproducts to some aquatic organisms bussing the ECOSAR (Ecological Structure Activity Relationships) protocol. It was found that the degradation of both compounds was governed by •OH attack and the pathways consisted of a cascade of reactions. The rate determining steps were decarboxylation (~ 60 kcal mol-1) and bond breakage reactions (~ 80 kcal mol-1), which were triggered by the stability of the reaction byproducts and overcome by the applied reaction conditions. Estimated values of the acute toxicities showed that only few of the byproducts were harmful to aquatic organisms, implying the environmental friendliness of the experimental method.
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Affiliation(s)
- Evrim Arslan
- Department of Chemistry, Boğaziçi University, Bebek, 34342, Istanbul, Turkey
| | - Basak Savun Hekimoglu
- Institute of Environmental Sciences, Boğaziçi University, Bebek, 34342, Istanbul, Turkey
| | - Sesil Agopcan Cinar
- Department of Chemistry, Boğaziçi University, Bebek, 34342, Istanbul, Turkey
| | - Nilsun Ince
- Institute of Environmental Sciences, Boğaziçi University, Bebek, 34342, Istanbul, Turkey.
| | - Viktorya Aviyente
- Department of Chemistry, Boğaziçi University, Bebek, 34342, Istanbul, Turkey.
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20
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Savun-Hekimoğlu B, Ince NH. Optimization of methylparaben degradation by sonocatalysis. ULTRASONICS SONOCHEMISTRY 2019; 58:104623. [PMID: 31450296 DOI: 10.1016/j.ultsonch.2019.104623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 06/10/2023]
Abstract
Sonocatalytic degradation of methylparaben (MPB) in the presence of a low-cost clay mineral (sepiolite) was optimized using a multivariable center composite design protocol based on response surface methodology (RSM). Using the data generated with varying MPB concentrations, pH, frequency and catalyst dose, two semi-empirical expressions were developed to describe the relation between the apparent reaction rate constant of the parent compound and the most significant control variables. It was found that ultrasonic power, pH, sepiolite dose and its interactions with time and pH were the most significant parameters influencing the rate of MPB decay under high frequency ultrasound. The models also showed that the rate constant was a convex function of time, as it decreased during the first 35-min of sonolysis and increased thereafter, indicating the formation and depletion of competing oxidation byproducts. Finally, the models predicted that the rate of MPB decay was a maximum either at alkaline pH and a high sepiolite dose (k = 1.68 × 10-1 min-1), or at acidic pH and a considerably lower dose of the mineral (k = 1.48 × 10-1 min-1).
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Affiliation(s)
| | - Nilsun H Ince
- Institute of Environmental Sciences, Bogazici University, 34342 Istanbul, Turkey.
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21
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Mirzaei A, Haghighat F, Chen Z, Yerushalmi L. Sonocatalytic removal of ampicillin by Zn(OH)F: Effect of operating parameters, toxicological evaluation and by-products identification. JOURNAL OF HAZARDOUS MATERIALS 2019; 375:86-95. [PMID: 31054533 DOI: 10.1016/j.jhazmat.2019.04.069] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 04/19/2019] [Accepted: 04/20/2019] [Indexed: 06/09/2023]
Abstract
Zinc hydroxyfluoride (Zn(OH)F) sonocatalyst was prepared by using solvothermal method and was characterized by using various techniques. The sonocatalytic degradation of ampicillin (AMP) in water by sonolysis, bare ZnO and Zn(OH)F was investigated in terms of AMP removal, mineralization, detoxification of solution, and remaining by-products at the end of process. Results revealed that the sonocatalytic performance of Zn(OH)F was significantly greater than that of bare ZnO. Under the optimum conditions, the removal percentage of AMP by Zn(OH)F was ∼97% after 90 min reaction, while 51% and 36% COD and TOC removal were achieved after 120 min reaction, respectively. The study of Zn(OH)F stability revealed that the degradation efficiency of AMP was reduced by only 5% even after being reused for four experiments. The toxicity of initial and treated solutions was assessed by using agar-well diffusion method and ToxTrak™ toxicity assay, and the results indicated a substantial reduction in the toxicity of solution after the treatment. The formation of some by-products during the sonolysis and sonocatalysis was evaluated by LC-HR-MS/MS method. LC-HR-MS/MS results showed that the concentration of most by-products, which were produced after 90 min treatment by US/Zn(OH)F process, was considerably lower than those obtained during sonolysis and US/ZnO processes.
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Affiliation(s)
- Amir Mirzaei
- Department of Building, Civil and Environmental Engineering, Faculty of Engineering and Computer Sciences, Concordia University, Montreal, Quebec, Canada
| | - Fariborz Haghighat
- Department of Building, Civil and Environmental Engineering, Faculty of Engineering and Computer Sciences, Concordia University, Montreal, Quebec, Canada
| | - Zhi Chen
- Department of Building, Civil and Environmental Engineering, Faculty of Engineering and Computer Sciences, Concordia University, Montreal, Quebec, Canada.
| | - Laleh Yerushalmi
- Department of Building, Civil and Environmental Engineering, Faculty of Engineering and Computer Sciences, Concordia University, Montreal, Quebec, Canada
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22
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Savun-Hekimoğlu B, Ince NH. Sonochemical and sonocatalytic destruction of methylparaben using raw, modified and SDS-intercalated particles of a natural clay mineral. ULTRASONICS SONOCHEMISTRY 2019; 54:233-240. [PMID: 30765215 DOI: 10.1016/j.ultsonch.2019.01.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/07/2019] [Accepted: 01/26/2019] [Indexed: 05/09/2023]
Abstract
The first part of the study is about the degradation of a common PPCP-methylparaben by high-frequency ultrasound to highlight the operation parameters, the reaction sites, the oxidation byproducts and the role of OH radicals. The second part covers the catalytic effect of a highly abundant and cost-effective clay mineral-sepiolite, and investigates the role of surface modification and SDS-composites of the clay in improving the efficiency of the degradation reactions. It was found that the compound (C0 = 10 mg L-1) was readily and totally decomposed by 30-min sonication at neutral pH, producing phenolic and aliphatic intermediates, but with insignificant mineralization. The major reaction site was the bubble-liquid interface, where the reactions were governed by OH radical attack. Modification of the sepiolite surface by pre-sonication in an ultrasonic bath improved the rate of reaction and the degree of TOC decay. Further modification by the synthesis of 20-min sonicated (200 kHz bath) SDS-intercalates of the clay was found to yield significant enhancement in the rate of target compound decomposition and the fraction of TOC decay, provided that the reaction was operated at acidic pH.
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Affiliation(s)
| | - Nilsun H Ince
- Institute of Environmental Sciences, 34342 Boğaziçi University, Istanbul, Turkey.
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23
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Aqueous methylparaben degradation by dielectric barrier discharge induced non-thermal plasma combined with ZnO-rGO nanosheets. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.10.048] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Effect of the electrolyte on the electrolysis and photoelectrolysis of synthetic methyl paraben polluted wastewater. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.03.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Sonochemical and photosonochemical degradation of endocrine disruptor 2-phenoxyethanol in aqueous media. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Rayaroth MP, Aravind UK, Aravindakumar CT. Effect of inorganic ions on the ultrasound initiated degradation and product formation of triphenylmethane dyes. ULTRASONICS SONOCHEMISTRY 2018; 48:482-491. [PMID: 30080575 DOI: 10.1016/j.ultsonch.2018.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/19/2018] [Accepted: 07/04/2018] [Indexed: 06/08/2023]
Abstract
Triphenylmethane (TPM) dyes are an important category of dyes with a variety of industrial applications and consequently, these are found in the aquatic environment at relatively higher concentrations. Here, we report the degradation of two important TPM dyes (para rosaniline (PRA) and ethyl violet (EV)) in an aqueous medium by ultrasound which is one among the Advanced Oxidation Processes (AOPs). The main objective of this work is to study the effect of various inorganic ions on the degradation and the product formation of TPM dyes from the sonochemical reactions. Using a typical concentration of 10 ppm dyes and an ultrasonic frequency of 350 kHz and power of 60 W, a complete degradation of EV and PRA was observed with a pseudo first order rate constant of 0.2339 min-1 and 0.1956 min-1, respectively. The product analyses using high-resolution mass spectrometry (LC-Q-TOF-MS) revealed the formation of hydroxylated, de-alkylated, and other collapsed conjugated structure destructed products. The evolution of these products in the presence of various inorganic ions (Cl-, SO42-, NO3-, and CO3-) showed that only carbonate ions had a significant impact on the product evolution. The carbonate ions facilitated the formation of conjugated structure destructed product for both the dyes. This is attributed to the reactivity of carbonate radical, which facilitated the formation of carbon-centered radicals. This carbon-centered radical further undergoes reaction to cause the destruction of conjugated structures. This is confirmed by the identification of the corresponding product peaks in the mass spectra. The scavenging effect of carbonate ions was also reflected in the product study where there is a reduction in the formation of most of the hydroxylated products. One of the major inorganic species in any wastewater is carbonate ions and therefore the present result is very relevant to the understanding of oxidation based treatment protocol.
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Affiliation(s)
- Manoj P Rayaroth
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam, Kerala, India
| | - Usha K Aravind
- Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, Kottayam, Kerala, India
| | - Charuvila T Aravindakumar
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam, Kerala, India; Inter University Instrumentation Centre, Mahatma Gandhi University, Kottayam, Kerala, India.
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Ngigi EM, Nomngongo PN, Ngila JC. Synthesis and Application of Fe-Doped WO3 Nanoparticles for Photocatalytic Degradation of Methylparaben Using Visible–Light Radiation and H2O2. Catal Letters 2018. [DOI: 10.1007/s10562-018-2594-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Mirzaei A, Yerushalmi L, Chen Z, Haghighat F. Photocatalytic degradation of sulfamethoxazole by hierarchical magnetic ZnO@g-C 3N 4: RSM optimization, kinetic study, reaction pathway and toxicity evaluation. JOURNAL OF HAZARDOUS MATERIALS 2018; 359:516-526. [PMID: 30086522 DOI: 10.1016/j.jhazmat.2018.07.077] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 07/19/2018] [Accepted: 07/20/2018] [Indexed: 06/08/2023]
Abstract
The degradation of sulfamethoxazole (SMX) by a synthesized hierarchical magnetic zinc oxide based composite ZnO@g-C3N4 (FZG) was examined. Hierarchical FZG was synthesized by using Fe3O4 nanoparticle as the magnetic core and urea as the precursor for in situ growth of g-C3N4 on the surface of petal-like ZnO. The effect of catalyst dosage (0.4-0.8 g/L), solution pH (3-11) and airflow rate (0.5-2.5 L/min) on the SMX removal efficiency and the optimization of process was studied by response surface methodology (RSM) based on central composite design (CCD). The obtained RSM model with R2 = 0.9896 showed a satisfactory correlation between the predicted values and experimental results of SMX removal. Under the optimum conditions, i.e. 0.65 g/L photocatalyst concentration, pH = 5.6 and airflow rate = 1.89 L/min, 90.4% SMX removal was achieved after 60 min reaction. The first-order kinetic rate constant for SMX removal by using FZG was 0.0384 min-1 while the rate constant by commercial ZnO was 0.0165 min-1. Moreover, under the optimum conditions, about 64% COD removal and 45% TOC removal and a considerable reduction in toxicity were observed. The analysis of generated intermediates during the photocatalytic degradation of SMX was conducted by LC-HR-MS/MS method and a degradation pathway was proposed.
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Affiliation(s)
- Amir Mirzaei
- Department of Building, Civil and Environmental Engineering (BCEE), Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Canada
| | - Laleh Yerushalmi
- Department of Building, Civil and Environmental Engineering (BCEE), Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Canada
| | - Zhi Chen
- Department of Building, Civil and Environmental Engineering (BCEE), Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Canada.
| | - Fariborz Haghighat
- Department of Building, Civil and Environmental Engineering (BCEE), Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Canada
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Md Yusoff M, Yahaya N, Md Saleh N, Raoov M. A study on the removal of propyl, butyl, and benzyl parabens via newly synthesised ionic liquid loaded magnetically confined polymeric mesoporous adsorbent. RSC Adv 2018; 8:25617-25635. [PMID: 35539765 PMCID: PMC9082765 DOI: 10.1039/c8ra03408g] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 06/30/2018] [Indexed: 01/12/2023] Open
Abstract
This study investigated the effectiveness of ionic liquids (ILs) loaded onto the surface of a polymeric adsorbent (βCD-TDI) grafted with modified magnetic nanoparticles (MNPs) via an analysis of water treatment, which resulted in high removal of selected endocrine-disrupting chemicals (parabens). The syntheses of MNPs, MNP-βCD-TDI, and IL-MNP-βCD-TDI were characterised and compared using Fourier transform infrared (FT-IR) spectroscopy, carbon-hydrogen-nitrogen (CHN) analysis, vibrating sample magnetometry (VSM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), the Brunauer-Emmett-Teller (BET) method, thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The results of SEM and TEM indicated that the pore size distribution exhibited mesoporous characteristics with a small surface area (BET analysis: 42.95 m2 g-1). Furthermore, a preliminary sorption experiment demonstrated the ability of IL-MNP-βCD-TDI to enhance not only the sorption capacity, but also the removal of propyl paraben (PP), butyl paraben (BP), and benzyl paraben (ArP). The adsorption process appeared to be pH-dependent, and hence the optimum pH of 6 was selected for a subsequent batch adsorption study of all the studied parabens with an equilibrium time of 80 min. Next, in an attempt to investigate the interactions that occur between the adsorbent and the adsorbates, adsorption kinetics and isotherm studies were performed. All the studied parabens were found to best fit pseudo-second-order kinetics and the Freundlich isotherm with R 2 > 0.98 at room temperature (298 K). The interaction of the host-guest inclusion complex and the π-π interaction between βCD and a selected paraben compound (ArP) were identified by performing 1H nuclear magnetic resonance (NMR), together with ultraviolet-visible (UV-vis) spectroscopic analysis. Finally, the adsorption efficiency of the developed material was practically tested on tap water, drain water, and industrial wastewater, which revealed a significant removal of parabens of up to 60-90% in comparison with a prior analysis.
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Affiliation(s)
- Masrudin Md Yusoff
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia Bertam 13200 Kepala Batas Penang Malaysia
| | - Noorfatimah Yahaya
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia Bertam 13200 Kepala Batas Penang Malaysia
| | - Noorashikin Md Saleh
- Research Centre For Sustainable Process Technology, Chemical Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor Malaysia
| | - Muggundha Raoov
- University of Malaya Centre for Ionic Liquids, Department of Chemistry, Faculty of Science, Universiti Malaya Kuala Lumpur 50603 Malaysia
- Department of Chemistry, Faculty of Science, Universiti Malaya Kuala Lumpur 50603 Malaysia
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30
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Wang L, Liu T, Sun H, Zhou Q. Transesterification of para-hydroxybenzoic acid esters (parabens) in the activated sludge. JOURNAL OF HAZARDOUS MATERIALS 2018; 354:145-152. [PMID: 29751170 DOI: 10.1016/j.jhazmat.2018.04.077] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 04/27/2018] [Accepted: 04/29/2018] [Indexed: 05/27/2023]
Abstract
Hydrolysis is generally considered as the main pathway for the degradation of ester-type pollutants in aquatic environments. In this study, we found that when methanol or ethanol presented as the external carbon in the activated sludge, transesterification is very important for the degradation of para-hydroxybenzoic acid esters (parabens). In the activated sludge solutions with 1% methanol added, contribution of transesterification to the degradation of the propyl substituted paraben (PrP) and ethyl substituted paraben (EtP) accounted for 46% and 83%, respectively, in the early stage of the reaction. This indicates that in aquatic environments with alcohols presence, parabens prefer to form small molecule homologues than hydrolysis to acid. The predominant transesterification in the activated sludge is related to enzyme preference. Amano lipase from Pseudomonas fluorescens was verified to catalyze hydrolysis and transesterification of parabens, while the latter was dominant in water solution with 1% methanol or ethanol. Considering the common application of small molecular alcohols as the external carbon sources in wastewater treatment plants, transesterification might be an important pathway for the degradation of parabens pollutants in these engineering aquatic environments.
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Affiliation(s)
- Lei Wang
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering at Nankai University, Tianjin, 300350, China.
| | - Tianzhen Liu
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering at Nankai University, Tianjin, 300350, China
| | - Hongwen Sun
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering at Nankai University, Tianjin, 300350, China
| | - Qixing Zhou
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering at Nankai University, Tianjin, 300350, China
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31
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Enhanced removal ability of phenol from aqueous solution using coal-based carbon membrane coupled with electrochemical oxidation process. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.01.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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32
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Rayaroth MP, Aravind UK, Aravindakumar CT. Role of in-situ nitrite ion formation on the sonochemical transformation of para-aminosalicylic acid. ULTRASONICS SONOCHEMISTRY 2018; 40:213-220. [PMID: 28946418 DOI: 10.1016/j.ultsonch.2017.06.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/04/2017] [Accepted: 06/29/2017] [Indexed: 06/07/2023]
Abstract
The sonochemical transformation of para-aminosalicylic acid (PAS), a widely used antibiotic and an identified Emerging Pollutant (EP) under the class of Pharmaceuticals and Personal Care Products (PPCPs), have been investigated in aqueous medium. Ultrasound having frequency of 350kHz and power of 80W was utilized for the degradation of PAS. A complete degradation (100%) of PAS after 60min and about 83% of COD removal after 120min of sonication, were obtained. Fourteen intermediate products were identified using LC-Q-TOF-MS. On a comparison with UV/H2O2 method, it is understood that four products out of fourteen were nitro derivatives which are formed only in the sonolysis, and the rest are from hydroxyl radicals. The involvement of nitrite which is formed from the sonolysis of solution containing PAS, in the formation of the other four nitro products has been established from the control studies. Nitrite ion partially scavenge hydroxyl radical in the course of the reaction to form nitrite radical which is the reactive species for the production of nitro compounds. It is, therefore, proposed that in addition to hydroxyl radical, contribution of in-situ generated nitrite also plays an important role in the sonochemical transformation of PAS.
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Affiliation(s)
- Manoj P Rayaroth
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam 686560, Kerala, India
| | - Usha K Aravind
- Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, Kottayam 686560, Kerala, India
| | - Charuvila T Aravindakumar
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam 686560, Kerala, India; Inter University Instrumentation Centre, Mahatma Gandhi University, Kottayam 686560, Kerala, India.
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Singh RK, Philip L, Ramanujam S. Removal of 2,4-dichlorophenoxyacetic acid in aqueous solution by pulsed corona discharge treatment: Effect of different water constituents, degradation pathway and toxicity assay. CHEMOSPHERE 2017; 184:207-214. [PMID: 28595146 DOI: 10.1016/j.chemosphere.2017.05.134] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 05/20/2017] [Accepted: 05/22/2017] [Indexed: 06/07/2023]
Abstract
A multiple pin-plane corona discharge reactor was used to generate plasma for the degradation of 2,4 dichlorophenoxyacetic acid (2,4-D) from the aqueous solution. The 2,4-D of concentration 1 mg/L was completely removed within 6 min of plasma treatment. Almost complete mineralization was achieved after the treatment time of 14 min for a 2,4-D concentration of 10 mg/L. Effects of different water constituents such as carbonates, nitrate, sulphate, chloride ions, natural organic matter (humic acids) and pH on 2,4-D degradation was studied. A significant antagonistic effect of carbonate and humic acid was observed, whereas, the effects of other ions were insignificant. A higher first order rate constant of 1.73 min-1 was observed, which was significantly decreased in the presence of carbonate ions and humic acids. Also, a higher degradation of 2,4-D was observed in acidic pH conditions. Different 2,4-D intermediates were detected and the degradation pathway of 2,4-D in plasma treatment process was suggested. The toxicity of 10 mg/L 2,4-D was completely eradicated after 10 min of plasma treatment.
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Affiliation(s)
- Raj Kamal Singh
- Department of Civil Engineering, Indian Institute of Technology Madras, 600036, India
| | - Ligy Philip
- Department of Civil Engineering, Indian Institute of Technology Madras, 600036, India.
| | - Sarathi Ramanujam
- Department of Electrical Engineering, Indian Institute of Technology Madras, 600036, India
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34
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Zúñiga-Benítez H, Peñuela GA. Methylparaben removal using heterogeneous photocatalysis: effect of operational parameters and mineralization/biodegradability studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:6022-6030. [PMID: 26988366 DOI: 10.1007/s11356-016-6468-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 03/11/2016] [Indexed: 06/05/2023]
Abstract
Methylparaben (MePB) is an organic compound employed mainly in the manufacture of different personal care products. However, it has been recently listed as a potential endocrine disrupter chemical. Therefore, the main objective of this work was to evaluate the degradation of MePB in aqueous solutions using heterogeneous photocatalysis with TiO2 and hydrogen peroxide. In this way, effects of pH and the initial concentrations of catalyst, H2O2, and pollutant on treatment were analyzed. A face centered, central composite design was used for determination of the influence of each parameter in the process and the conditions under which the pollutant suffers the highest rates of degradation were selected. In general, results indicate that combination TiO2/H2O2/light irradiation leads to ∼90 % of substrate removal after 30 min of reaction and that hydroxyl free radicals are the main specie responsible for organic matter elimination. Finally, in terms of mineralization and biodegradability, experimental results indicated that part of the organic matter was transformed into CO2 and water and the photo-treatment promoted an increase in samples biodegradability.
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Affiliation(s)
- Henry Zúñiga-Benítez
- Grupo GDCON, Facultad de Ingeniería, Sede de Investigación Universitaria (SIU), Universidad de Antioquia, Calle 70 No 52-21, Medellín, Colombia.
| | - Gustavo A Peñuela
- Grupo GDCON, Facultad de Ingeniería, Sede de Investigación Universitaria (SIU), Universidad de Antioquia, Calle 70 No 52-21, Medellín, Colombia
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35
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Rayaroth MP, Aravind UK, Aravindakumar CT. Ultrasound based AOP for emerging pollutants: from degradation to mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:6261-6269. [PMID: 27074927 DOI: 10.1007/s11356-016-6606-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 03/30/2016] [Indexed: 06/05/2023]
Abstract
Ultrasound is known to degrade organic compounds by pyrolysis and by the reaction of free radicals. In this work, sonolytic degradation of an identified water pollutant, coomassie brilliant blue (CBB), has been carried out in pure water as well as in river water. In the case of pure water, 90 % degradation was obtained after 30 min of sonication (350 kHz frequency, 60 W power), whereas in river water, the same efficiency was achieved only after 90 min. The degradation was also performed in the presence of varying concentration of (10-100 mg L-1) inorganic ions such as chloride, sulfate, nitrate, bicarbonate, and carbonate ions which were detected in the river water sample. Higher concentration of chloride enhanced the degradation due to the salting out mechanism. The enhancement of degradation in the presence of nitrate is mainly due to the change in the surface potential at the interface of the cavitating bubble. Bicarbonate ion and carbonate ion enhanced the degradation due to the involvement of carbonate radicals. A possible degradation mechanism is proposed based on the product profile determined by LC-Q-ToF-MS. The low efficiency of degradation in river water compared to that in pure water is likely due to the increased rate of bubble dissolution or escape of bubbles (degassing effect), and the scavenging of •OH by the organic content (high chemical oxygen demand (COD)).
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Affiliation(s)
- Manoj P Rayaroth
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam, 686560, Kerala, India
| | - Usha K Aravind
- Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, Kottayam, 686560, Kerala, India
| | - Charuvila T Aravindakumar
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam, 686560, Kerala, India.
- Inter University Instrumentation Centre, Mahatma Gandhi University, Kottayam, 686560, Kerala, India.
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Md Yusoff M, Raoov M, Yahaya N, Md Salleh N. An ionic liquid loaded magnetically confined polymeric mesoporous adsorbent for extraction of parabens from environmental and cosmetic samples. RSC Adv 2017. [DOI: 10.1039/c7ra06682a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Schematic illustration of MSPE procedure for paraben analysis using a new ionic liquid loaded magnetically confined polymeric mesoporous material.
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Affiliation(s)
- Masrudin Md Yusoff
- Integrative Medicine Cluster
- Advanced Medical and Dental Institute (AMDI)
- Universiti Sains Malaysia
- Malaysia
| | - Muggundha Raoov
- Integrative Medicine Cluster
- Advanced Medical and Dental Institute (AMDI)
- Universiti Sains Malaysia
- Malaysia
| | - Noorfatimah Yahaya
- Integrative Medicine Cluster
- Advanced Medical and Dental Institute (AMDI)
- Universiti Sains Malaysia
- Malaysia
| | - Noorashikin Md Salleh
- Department of Chemical and Process Engineering
- Faculty of Engineering and Built Environment
- Universiti Kebangsaan Malaysia
- Malaysia
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37
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Papadopoulos C, Frontistis Z, Antonopoulou M, Venieri D, Konstantinou I, Mantzavinos D. Sonochemical degradation of ethyl paraben in environmental samples: Statistically important parameters determining kinetics, by-products and pathways. ULTRASONICS SONOCHEMISTRY 2016; 31:62-70. [PMID: 26964924 DOI: 10.1016/j.ultsonch.2015.12.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 11/03/2015] [Accepted: 12/04/2015] [Indexed: 05/22/2023]
Abstract
The sonochemical degradation of ethyl paraben (EP), a representative of the parabens family, was investigated. Experiments were conducted at constant ultrasound frequency of 20 kHz and liquid bulk temperature of 30 °C in the following range of experimental conditions: EP concentration 250-1250 μg/L, ultrasound (US) density 20-60 W/L, reaction time up to 120 min, initial pH 3-8 and sodium persulfate 0-100mg/L, either in ultrapure water or secondary treated wastewater. A factorial design methodology was adopted to elucidate the statistically important effects and their interactions and a full empirical model comprising seventeen terms was originally developed. Omitting several terms of lower significance, a reduced model that can reliably simulate the process was finally proposed; this includes EP concentration, reaction time, power density and initial pH, as well as the interactions (EP concentration)×(US density), (EP concentration)×(pHo) and (EP concentration)×(time). Experiments at an increased EP concentration of 3.5mg/L were also performed to identify degradation by-products. LC-TOF-MS analysis revealed that EP sonochemical degradation occurs through dealkylation of the ethyl chain to form methyl paraben, while successive hydroxylation of the aromatic ring yields 4-hydroxybenzoic, 2,4-dihydroxybenzoic and 3,4-dihydroxybenzoic acids. By-products are less toxic to bacterium V. fischeri than the parent compound.
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Affiliation(s)
- Costas Papadopoulos
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | - Zacharias Frontistis
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | - Maria Antonopoulou
- Department of Environmental & Natural Resources Management, University of Patras, 2 Seferi St., GR-30100 Agrinio, Greece
| | - Danae Venieri
- School of Environmental Engineering, Technical University of Crete, Polytechneioupolis, GR-73100 Chania, Greece
| | - Ioannis Konstantinou
- Department of Environmental & Natural Resources Management, University of Patras, 2 Seferi St., GR-30100 Agrinio, Greece
| | - Dionissios Mantzavinos
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece.
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Singh RK, Philip L, Ramanujam S. Rapid Removal of Carbofuran from Aqueous Solution by Pulsed Corona Discharge Treatment: Kinetic Study, Oxidative, Reductive Degradation Pathway, and Toxicity Assay. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b01191] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raj Kamal Singh
- Department of Civil Engineering, and ‡Department of Electrical Engineering, Indian
Institute of Technology, Indian Institute of Technology, Madras, 600036, India
| | - Ligy Philip
- Department of Civil Engineering, and ‡Department of Electrical Engineering, Indian
Institute of Technology, Indian Institute of Technology, Madras, 600036, India
| | - Sarathi Ramanujam
- Department of Civil Engineering, and ‡Department of Electrical Engineering, Indian
Institute of Technology, Indian Institute of Technology, Madras, 600036, India
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39
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Molins-Delgado D, Díaz-Cruz MS, Barceló D. Ecological risk assessment associated to the removal of endocrine-disrupting parabens and benzophenone-4 in wastewater treatment. JOURNAL OF HAZARDOUS MATERIALS 2016; 310:143-151. [PMID: 26905612 DOI: 10.1016/j.jhazmat.2016.02.030] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 02/08/2016] [Accepted: 02/11/2016] [Indexed: 06/05/2023]
Abstract
The occurrence of four widely used and endocrine disrupting parabens (PBs) (methylparaben, propylparaben, butylparaben and benzylparaben) and a polar UV filter (benzophenone-4) were determined in influent and effluent wastewater from the 19 major wastewater treatment plants (WWTPs) of Catalonia, Spain. For their analysis an on-line solid-phase extraction-liquid chromatography-tandem mass spectrometry (SPE-HPLC-MS/MS) method was developed and validated. Laboratory analysis revealed high levels for both PBs and BP4, with maximum concentrations of 5700ngL(-1) and 1806ngL(-1), respectively, in influent samples, and 137ngL(-1) and 1080ngL(-1), respectively in effluent wastewaters. Removal rates (RE%) for the target compounds in each WWTPs were calculated. RE% for parabens were almost 100%, whereas for BP4 values where in the range 5-91%. The half-life time (t1/2), hydraulic retention time (HRT), and annual mass load (ML) for each facility was estimated. Results indicated that there was no clear influence of HRT on the RE% of BP4. MLs for BP4 were in the range 0.9-110.1kgy(-1), with the highest values in the most populated areas. Finally, a risk assessment, estimated in terms of hazard quotients (HQs), was carried out for aquatic biota. HQs for the target compounds in effluent wastewaters indicated a negligible effect, whereas for some influent wastewaters' HQs pointed out that some species are at risk.
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Affiliation(s)
- Daniel Molins-Delgado
- Dept. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
| | - M Silvia Díaz-Cruz
- Dept. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
| | - Damià Barceló
- Dept. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain; Catalan Institute for Water Research (ICRA), Parc Científic i Tecnològic de la Universitat de Girona, Emili Grahit, 101 Edifici H2O, 17003 Girona, Spain
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