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Li J, Li W, Hu J, Li C, Cui X. Proso millet peroxidase-mediated degradation and detoxification of Rhodamine B in water. ENVIRONMENTAL TECHNOLOGY 2024; 45:3559-3569. [PMID: 37272148 DOI: 10.1080/09593330.2023.2220887] [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: 02/05/2023] [Accepted: 05/20/2023] [Indexed: 06/06/2023]
Abstract
Enzymatic catalysis is a promising approach for the degradation of organic pollutants and peroxidases (PODs) are one of the most common enzyme classes used to degrade organic pollutants. Proso millet peroxidase (PmPOD) is a peroxidase extracted and purified from proso millet bran which is the by-product of proso millet processing. In this study, we investigated the effects of PmPOD on the degradation of typical organic pollutants (Rhodamine B (RhB), bisphenol A, sulfadiazine) for the first time. Moreover, we screened RhB as the substrate with the best degradation effect. The degradation rate of RhB catalyzed by PmPOD (10 nM) reached 99.46% in 30 min under the optimal conditions (pH 5, 30°C, and molar ratio of RhB, H2O2 and HOBT of 1:9.58:1.94 × 10-3). The reaction kinetics parameters of PmPOD-mediated RhB degradation Km, Vmax and kcat were 62.2, 935.7 and 9.357 × 104, respectively. High-performance liquid chromatography analyses confirmed that PmPOD transformed RhB into two new products. Furthermore, toxicological evaluation in Caenorhabditis elegans demonstrated that 10 μg/mL RhB significantly reduced the lifespan by 8.3%, reduced the motility and pharynx-pumping rate compared with the control group, while the 10 μg/mL RhB product had no significant effect on these indexes. These data indicated that the toxicity of RhB disappeared after catalytic degradation by PmPOD. Taken together, these data suggest that catalysis of PmPOD is an effective method for degradation and detoxification of RhB. This study provides a potential candidate method for the biological treatment of RhB, and improves the added value of proso millet bran.
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Affiliation(s)
- Jiao Li
- College of Life Science, Shanxi University, Taiyuan, Shanxi, People's Republic of China
| | - Wenyan Li
- College of Life Science, Shanxi University, Taiyuan, Shanxi, People's Republic of China
| | - Jianjian Hu
- College of Life Science, Shanxi University, Taiyuan, Shanxi, People's Republic of China
| | - Chen Li
- College of Life Science, Shanxi University, Taiyuan, Shanxi, People's Republic of China
| | - Xiaodong Cui
- Institute of Biotechnology, Shanxi University, Taiyuan, Shanxi, People's Republic of China
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2
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Rathore V, Patel S, Pandey A, Savjani J, Butani S, Dave H, Nema SK. Methotrexate degradation in artificial wastewater using non-thermal pencil plasma jet. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-28502-z. [PMID: 37395874 DOI: 10.1007/s11356-023-28502-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 06/25/2023] [Indexed: 07/04/2023]
Abstract
The rising global cancer rate is driving up the consumption of anticancer drugs. This causing a noticeable increase in the levels of these drugs in wastewater. The drugs are not metabolized effectively by the human body, leading to their presence in human waste, as well as in the effluent from hospitals and drug manufacturing industries. Methotrexate is a commonly used drug for treating various types of cancer. Its complex organic structure makes it difficult to degrade using conventional methods. The present work proposed a non-thermal pencil plasma jet treatment for methotrexate degradation. The air plasma produced in this jet setup is electrical characterized and plasma species/radicals are identified using emission spectroscopy. The degradation of drug is monitored by studying the change in solution physiochemical properties, HPLC-UV analysis, and removal of total organic carbon, etc.Results show that a 9-min plasma treatment completely degraded the drug solution that followed first-order degradation kinetics with rate constant 0.38 min-1 and 84.54% mineralization was observed. Additionally, an increase in electrical conductivity and dissolved solids compared to virgin water-plasma interaction indicated the formation of new, smaller compounds (2,4-Diaminopteridine-6-carboxylic acid, N-(4-Aminobenzoyl)-L-glutamic acid, etc.) after drug degradation. The plasma-treated methotrexate solution also showed lower toxicity toward freshwater chlorella algae compared to the untreated solution. Finally, it can be said that non-thermal plasma jets are economically and environmentally friendly devices that have the potential to be used for the treatment of complex and resistive anticancer drug-polluted wastewaters.
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Affiliation(s)
- Vikas Rathore
- Atmospheric Plasma Division, Institute for Plasma Research (IPR), Gandhinagar, Gujarat, 382428, India.
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai, 400094, India.
| | - Shruti Patel
- National Forensic Sciences University, Gandhinagar, Gujarat, 382007, India
| | - Akanksha Pandey
- National Forensic Sciences University, Gandhinagar, Gujarat, 382007, India
| | - Jignasa Savjani
- Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat, 382481, India
| | - Shital Butani
- Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat, 382481, India
| | - Heman Dave
- National Forensic Sciences University, Gandhinagar, Gujarat, 382007, India
| | - Sudhir Kumar Nema
- Atmospheric Plasma Division, Institute for Plasma Research (IPR), Gandhinagar, Gujarat, 382428, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai, 400094, India
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3
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Pan Z, Xin H, Xu R, Wang P, Fan X, Song Y, Song C, Wang T. Carbon electrochemical membrane functionalized with flower cluster-like FeOOH catalyst for organic pollutants decontamination. J Colloid Interface Sci 2023; 640:588-599. [PMID: 36878076 DOI: 10.1016/j.jcis.2023.02.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/22/2023] [Accepted: 02/25/2023] [Indexed: 03/06/2023]
Abstract
Decorating active catalysts on the reactive electrochemical membrane (REM) is an effective way to further improve its decontamination performance. In this work, a novel carbon electrochemical membrane (FCM-30) was prepared through coating FeOOH nano catalyst on a low-cost coal-based carbon membrane (CM) through facile and green electrochemical deposition. Structural characterizations demonstrated that the FeOOH catalyst was successfully coated on CM, and it grew into a flower cluster-like morphology with abundant active sites when the deposition time was 30 min. The nano FeOOH flower clusters can obviously boost the hydrophilicity and electrochemical performance of FCM-30, which enhance its permeability and bisphenol A (BPA) removal efficiency during the electrochemical treatment. Effects of applied voltages, flow rates, electrolyte concentrations and water matrixes on BPA removal efficiency were investigated systematically. Under the operation condition of 2.0 V applied voltage and 2.0 mL·min-1 flow rate, FCM-30 can achieve the high removal efficiency of 93.24% and 82.71% for BPA and chemical oxygen demand (COD) (71.01% and 54.89% for CM), respectively, with only a low energy consumption (EC) of 0.41 kWh·kgCOD-1, which can be ascribed to the enhancement on OH yield and direct oxidation ability by the FeOOH catalyst. Moreover, this treatment system also exhibits good reusability and can be adopted on different water background as well as different pollutants.
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Affiliation(s)
- Zonglin Pan
- College of Environmental Science and Engineering, Dalian Maritime University, 1, Linghai Road, Dalian 116026, China
| | - Hong Xin
- College of Environmental Science and Engineering, Dalian Maritime University, 1, Linghai Road, Dalian 116026, China
| | - Ruisong Xu
- School of Chemical Engineering, Dalian University of Technology, 2, Linggong Road, Dalian 116024, China.
| | - Pengcheng Wang
- Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
| | - Xinfei Fan
- College of Environmental Science and Engineering, Dalian Maritime University, 1, Linghai Road, Dalian 116026, China
| | - Yongxin Song
- Department of Marine Engineering, Dalian Maritime University, 1, Linghai Road, Dalian 116026, China
| | - Chengwen Song
- College of Environmental Science and Engineering, Dalian Maritime University, 1, Linghai Road, Dalian 116026, China.
| | - Tonghua Wang
- College of Environmental Science and Engineering, Dalian Maritime University, 1, Linghai Road, Dalian 116026, China; School of Chemical Engineering, Dalian University of Technology, 2, Linggong Road, Dalian 116024, China.
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4
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Pan Z, Xin H, Xu S, Xu R, Wang P, Yuan Y, Fan X, Song Y, Song C, Wang T. Preparation and performance of polyaniline modified coal-based carbon membrane for electrochemical filtration treatment of organic wastewater. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120600] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Zhou X, Zhou Q, Chen H, Wang J, Liu Z, Zheng R. Influence of dimethylphenol isomers on electrochemical degradation: Kinetics, intermediates, and DFT calculation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 794:148284. [PMID: 34214809 DOI: 10.1016/j.scitotenv.2021.148284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/09/2021] [Accepted: 06/01/2021] [Indexed: 06/13/2023]
Abstract
Dimethylphenol isomers (DMP) pose a great threat to the environment, and the electrooxidation (EO) process proves to be an extraordinarily effective method to degrade DMP. However, the EO performance is affected by the molecular structure of DMP and the adopted experimental parameters. In this study, the effects of 2,4-DMP and 2,6-DMP on the working potential, limiting current density (Jlim), and pH were systematically analysed, with Ti-mesh plates used as the cathode and Ti/PbO2 as the anode. The peak potentials of 2,4-DMP and 2,6-DMP were determined to be 0.83 V and 0.77 V by cyclic voltammetry, with Jlim were 2.5 mA·cm-2 and 2.0 mA·cm-2, respectively. The whole process exhibited pseudo-first-order kinetics, and the kinetic constants (K) for the degradation of 2,4-DMP and 2,6-DMP were determined to be 0.0041 min-1 and 0.0150 min-1, respectively. Additionally, the optimal initial pH value for 2,4-DMP and 2,6-DMP was 5.0, where the highest hydroxyl (OH) radical density, as determined by the electron spin technique (ESR), was achieved at a higher current density. Comparatively, the OH radical density in the 2,6-DMP solution was lower than that in 2,4-DMP. In situ Fourier infrared (FT-IR) spectroscopy, GC-MS, and density functional theory (DFT) were employed to explore three possible degradation pathways. The main intermediates for 2,4-DMP degradation were determined to be quinone and ether, while that for 2,6-DMP degradation was quinone. According to the results of this study, the molecular structure (different methyl group positions on the benzene ring) has a great influence on the EO process.
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Affiliation(s)
- Xule Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Qingqing Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Haihua Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Jiade Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China.
| | - Zifeng Liu
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Ruihao Zheng
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
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6
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Wei K, Cui T, Huang F, Zhang Y, Han W. Membrane Separation Coupled with Electrochemical Advanced Oxidation Processes for Organic Wastewater Treatment: A Short Review. MEMBRANES 2020; 10:membranes10110337. [PMID: 33198324 PMCID: PMC7697808 DOI: 10.3390/membranes10110337] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/10/2020] [Accepted: 11/10/2020] [Indexed: 11/25/2022]
Abstract
Research on the coupling of membrane separation (MS) and electrochemical advanced oxidation processes (EAOPs) has been a hot area in water pollution control for decades. This coupling aims to greatly improve water quality and focuses on the challenges in practical application to provide a promising solution to water shortage problems. This article provides a summary of the coupling configurations of MS and EAOPs, including two-stage and one-pot processes. The two-stage process is a combination of MS and EAOPs where one process acts as a pretreatment for the other. Membrane fouling is reduced when setting EAOPs before MS, while mass transfer is promoted when placing EAOPs after MS. A one-pot process is a kind of integration of two technologies. The anode or cathode of the EAOPs is fabricated from porous materials to function as a membrane electrode; thus, pollutants are concurrently separated and degraded. The advantages of enhanced mass transfer and the enlarged electroactive area suggest that this process has excellent performance at a low current input, leading to much lower energy consumption. The reported conclusions illustrate that the coupling of MS and EAOPs is highly applicable and may be widely employed in wastewater treatment in the future.
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Affiliation(s)
- Kajia Wei
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (K.W.); (T.C.); (F.H.)
| | - Tao Cui
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (K.W.); (T.C.); (F.H.)
- Nanjing Research Institute of Electronic Engineering, Nanjing 210007, China
| | - Fang Huang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (K.W.); (T.C.); (F.H.)
| | - Yonghao Zhang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (K.W.); (T.C.); (F.H.)
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China
- Correspondence: (Y.Z.); (W.H.)
| | - Weiqing Han
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (K.W.); (T.C.); (F.H.)
- Correspondence: (Y.Z.); (W.H.)
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7
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Environmental Remediation of Antineoplastic Drugs: Present Status, Challenges, and Future Directions. Processes (Basel) 2020. [DOI: 10.3390/pr8070747] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The global burden of cancer is on the rise, and as a result, the number of therapeutics administered for chemotherapy is increasing. The occupational exposure, recalcitrant nature and ecotoxicological toxicity of these therapeutics, referred to as antineoplastic (ANP) drugs, have raised concerns about their safe remediation. This review provides an overview of the environmental source of ANPs agents, with emphasis on the currently used remediation approaches. Outpatient excreta, hospital effluents, and waste from pharmaceutical industries are the primary source of ANP waste. The current review describes various biotic and abiotic methods used in the remediation of ANP drugs in the environment. Abiotic methods often generate transformation products (TPs) of unknown toxicity. In this light, obtaining data on the environmental toxicity of ANPs and its TPs is crucial to determine their toxic effect on the ecosystem. We also discuss the biodegradation of ANP drugs using monoculture of fungal and bacterial species, and microbial consortia in sewage treatment plants. The current review effort further explores a safe and sustainable approach for ANP waste treatment to replace existing chemical and oxidation intensive treatment approaches. To conclude, we assess the possibility of integrating biotic and abiotic methods of ANP drug degradation.
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8
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Graumans MHF, Hoeben WFLM, Russel FGM, Scheepers PTJ. Oxidative degradation of cyclophosphamide using thermal plasma activation and UV/H 2O 2 treatment in tap water. ENVIRONMENTAL RESEARCH 2020; 182:109046. [PMID: 31884193 DOI: 10.1016/j.envres.2019.109046] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 08/02/2019] [Accepted: 12/13/2019] [Indexed: 06/10/2023]
Abstract
There is a growing concern about pharmaceuticals entering the aquatic environment. Many of these compounds cannot be removed completely in sewage treatment plants. To remove these unwanted medicines from water, oxidative degradation techniques may complement the current purification steps. In this paper we studied the effect of advanced oxidation on the cytostatic drug cyclophosphamide (CP) by comparing thermal plasma activation with UV/H2O2 treatment. Plasma activated water (PAW) contains highly reactive oxygen and nitrogen species (RONS) as a result of electric gas discharges in air over water. CP solutions in tap water were oxidized over a period of 120 min and subsequently analyzed by LC-MS/MS to measure the compound degradation. Plasma activation was applied at 50, 100, or 150 W electric power input and UV/H2O2 treatment was carried out by the addition of H2O2 and placing an UV-C source above the test solution for immediate irradiation. The oxidative degradation of CP in PAW resulted in a complete degradation within 80 min at 150 W. CP was also completely degraded within 60 min applying UV/H2O2 oxidation. Both treatment techniques do induce different structural changes, demonstrating that CP is completely degraded in tap water.
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Affiliation(s)
- Martien H F Graumans
- Department for Health Evidence, Radboud Institute for Health Sciences, Radboudumc, Nijmegen, the Netherlands.
| | - Wilfred F L M Hoeben
- Department of Electrical Energy Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Frans G M Russel
- Department of Pharmacology and Toxicology, Radboud Institute for Molecular Life Sciences, Radboudumc, Nijmegen, the Netherlands
| | - Paul T J Scheepers
- Department for Health Evidence, Radboud Institute for Health Sciences, Radboudumc, Nijmegen, the Netherlands
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9
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Sivodia C, Sinha A. Assessment of graphite electrode on the removal of anticancer drug cytarabine via indirect electrochemical oxidation process: Kinetics & pathway study. CHEMOSPHERE 2020; 243:125456. [PMID: 31995895 DOI: 10.1016/j.chemosphere.2019.125456] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/21/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
In this paper degradation of cytarabine drug has been studied through electrochemical oxidation process by using graphite electrode. The performance of graphite electrode on the degradation of cytarabine was evaluated by investigating the effects of key parameters: pH (3-9), current density (5-20 mA cm-2) and initial pollutant concentration (5-50 mg L-1) with 0.05 M NaCl as supporting electrolyte. Highest removal efficiency (98%) for 20 mg L-1 of initial cytarabine solution was attained within 60 min electrolysis at 10 mA cm-2. The increase in degradation rate of cytarabine was possibly because of the active chlorine species originated at anode during the electrolysis. Further, efficiency of the graphite electrodes was compared with a metal electrode (copper) and results showed that the cytarabine degradation was facilitated by the in-situ generated OH radicals. However, only 82% of cytarabine was removed after 60 min of reaction time at 15 mA cm-2. The scum of Cu2+ ions deposited on the anode surface inhibit the mass transfer among the cytarabine molecules and generated hydroxyl radicals. The kinetic study also suggests faster reaction rate at graphite (0.12 min-1) than copper (0.05 min-1) electrode. The increase in electrolyte concentration enhanced the degradation rate and decreased the energy consumption from 3.66 to 0.66 kWh m-3. Cytosine was identified as the major transformation product from the UV-Vis spectral analysis and LC-MS analysis. Further, total organic carbon analysis depicts that only 60% of the parent molecule was mineralized. Hence, graphite was found to be an efficient anode material as compared to copper for cytarabine degradation.
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Affiliation(s)
- Charulata Sivodia
- Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | - Alok Sinha
- Indian Institute of Technology (Indian School of Mines), Dhanbad, India.
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10
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Tan TY, Zeng ZT, Zeng GM, Gong JL, Xiao R, Zhang P, Song B, Tang WW, Ren XY. Electrochemically enhanced simultaneous degradation of sulfamethoxazole, ciprofloxacin and amoxicillin from aqueous solution by multi-walled carbon nanotube filter. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116167] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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11
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Xu L, Tang S, Wang K, Ma X, Niu J. Insights into the degradation and detoxication mechanisms of aqueous capecitabine in electrochemical oxidation process. CHEMOSPHERE 2020; 241:125058. [PMID: 31610461 DOI: 10.1016/j.chemosphere.2019.125058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/01/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
Electrocatalytic oxidation and detoxication of capecitabine (CAP) in aqueous solution were investigated with Ti/SnO2-Sb/Ce-PbO2 anode. The relative contributions of generated free radicals showed an increase in the pseudo zero order tare constants in the following order: OH (9.4%) < SO4- (24.2%) < O2- (53.3%). The operating parameters and solution matrixes, i.e. applied current densities, initial CAP concentrations, initial Cl- and NO3- concentrations, influencing the CAP degradation efficiency were evaluated. The kinetic rate constant of 0.1404 min-1 was found within 7 min at current density of 10 mA cm-2 and initial CAP concentration of 20 mg L-1, while the mineralization efficiency of 59.5%, mineralization current efficiency of 2.06%, detoxication rate to Escherichia coli of 55.5% were achieved at reaction time 90 min. The major degradation pathways of CAP were oxidation, defluorination and bond cleavage, following with the formation of carboxylic acids, NO3-, NO2-, NH4+ and F-. Electrochemical oxidation process based on Ti/SnO2-Sb/Ce-PbO2 anode is proved to be effective for elimination, mineralization and detoxication of aqueous CAP.
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Affiliation(s)
- Lei Xu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China
| | - Shaoyu Tang
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China
| | - Kaixuan Wang
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China
| | - Xiao Ma
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China
| | - Junfeng Niu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China.
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12
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Pan Z, Yu F, Li L, Song C, Yang J, Wang C, Pan Y, Wang T. Electrochemical microfiltration treatment of bisphenol A wastewater using coal-based carbon membrane. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115695] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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13
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Mazierski P, Borzyszkowska AF, Wilczewska P, Białk-Bielińska A, Zaleska-Medynska A, Siedlecka EM, Pieczyńska A. Removal of 5-fluorouracil by solar-driven photoelectrocatalytic oxidation using Ti/TiO 2(NT) photoelectrodes. WATER RESEARCH 2019; 157:610-620. [PMID: 31003076 DOI: 10.1016/j.watres.2019.04.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/24/2019] [Accepted: 04/06/2019] [Indexed: 06/09/2023]
Abstract
The efficient and safe degradation of drugs present in wastewater requires the design of a new material possessing high activity for that process. In addition to other methods, photoelectrocatalysis (PEC) merges the strengths of both photocatalytic and electrochemical methods, and the efficiency could be enhanced by the type of photoelectrode material. To address this challenge, three Ti/TiO2 nanotube-based photoelectrodes, differing in their tube morphology, were prepared by anodic oxidation and employed for the degradation of the 5-fluorouracil (5-FU) drug by the PEC process. The highest efficiency for 5-fluorouracil (5-FU) degradation by PEC was observed for the photoelectrode with a 1.7 μm length, 65 nm diameter and 8 nm wall thickness of TiO2 nanotubes, which were prepared by Ti foil anodization at 30 V. The effects of applied potential, irradiation intensity, initial pH and 5-FU concentration on PEC were investigated. Furthermore, our findings showed that the mechanism of photoelectrocatalysis in the presence of TiO2 nanotubes is based on ∙OH and h+ activity. To determine the 5-FU degradation pathway, the organic byproducts were identified by LC-MS analysis. Furthermore, the ecotoxicity evaluated during PEC dropped with decreasing 5-FU concentration.
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Affiliation(s)
- Paweł Mazierski
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308, Gdansk, Poland
| | | | - Patrycja Wilczewska
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308, Gdansk, Poland
| | - Anna Białk-Bielińska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdansk, 80-308, Gdansk, Poland
| | - Adriana Zaleska-Medynska
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308, Gdansk, Poland
| | - Ewa M Siedlecka
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308, Gdansk, Poland
| | - Aleksandra Pieczyńska
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, 80-308, Gdansk, Poland.
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Cui T, Shen C, Xu A, Han W, Li J, Sun X, Shen J, Wang L. Use of a novel coupled-oxidation tubular reactor (COTR)/ NTP-DBD catalytic plasma in a synergistic electro-catalysis system for odorous mercaptans degradation. CHEMOSPHERE 2019; 216:533-544. [PMID: 30388689 DOI: 10.1016/j.chemosphere.2018.10.170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 10/23/2018] [Accepted: 10/24/2018] [Indexed: 06/08/2023]
Abstract
In this work, a novel coupled-oxidation tubular reactor (COTR)/non-thermal dielectric barrier discharge (NTP-DBD) catalytic plasma in a synergistic electro-catalysis system was investigated for odorous mercaptans decomposition. In order to enhance the degradation efficiency of electro-oxidation, a novel enhanced Ti/PbO2 electro-catalytic tubular reactor prepared by using flow dynamic electrodeposition was designed and applied as pretreatment process for CH3SNa wastewater. The results indicated that the optimal condition was 7 mA cm-2 of current density, 10 g L-1 of initial concentration of CH3SNa, 9.0 of pH and 5.0 g L-1 of electrolyte concentration. Addition of Fe2+ and H2O2 and mechanism of COTR system were first put forward. The target species CH3SNa were removed over 90% by this process. In order to treat the CH3SH effusion which was co-produced with CH3SNa aqueous solution, the technology of NTP-DBD catalytic plasma reactor followed by a chemical absorption has been developed. MSH could be removed over 95% under the condition of 2 s of residence time, 15 kV of output voltage with oxygen concentration of 9%. Moreover, the synthetic Ni-doped AC catalyst had the best performance under 0.7 mmol g-1 of nickel loading. The conclusion was the energetic electrons generated in the DBD reactor played a key role on the removal of MSH, and the major decomposition products of MSH were detected as CH3SSCH3, SO2 and NO2. Moreover, the gaseous products in the plasma exhaust could be absorbed and fixed by the subsequent aqueous NaOH solution.
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Affiliation(s)
- Tao Cui
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Chenyang Shen
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Anlin Xu
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Weiqing Han
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Jiansheng Li
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Xiuyun Sun
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Jinyou Shen
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Lianjun Wang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
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15
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Zhang Y, Wei K, Xu A, Han W, Sun X, Li J, Shen J, Wang L. Pesticide tailwater deeply treated by tubular porous electrode reactor (TPER): Purpose for discharging and cost saving. CHEMOSPHERE 2017; 185:86-93. [PMID: 28688340 DOI: 10.1016/j.chemosphere.2017.06.115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 06/25/2017] [Accepted: 06/27/2017] [Indexed: 06/07/2023]
Abstract
Pesticide tailwater often contains residual and toxic contaminants of triazole fungicides (TFs) due to their poor biodegradability which will do great harm to local aquatic systems. For this case, a novel electrochemical reactor (TPER) equipped a tubular porous RuO2-Sb2O5-SnO2 electrode was assembled and then employed to deeply treat pesticide tailwater. Characterizations of the electrode studied by SEM, EDS and XRD analysis indicated that it owns a porous structure and a compact and crack-free surface. Influence of the porous structure on electrochemical property was examined by cyclic voltammetry and normal pulse voltammetry. The results indicated that porous structure can not only enlarge electrochemical active area but also increase mass transfer efficiency by 5.7-fold in flow-through mode compared with batch mode. Furthermore, the optimal operating conditions of TPER were flow rate of 250 mL min-1 and current density of 4 mA cm-2. After 1.5 h treatment under these conditions, Tz, TC and PPC were removed by 98.9%, 99.0% and 98.4% respectively, while 81.9% of COD was also removed. Additionally, the microbial content was dropped to 0 CFU mL-1 and fecal coliform was lower than 2 MPN (100 mL)-1. All results demonstrated that the treated tailwater has met the Class 1 of National Discharge Standard of China. Especially, operating cost of TPER was only $ 0.33 per ton. The excellent performance together with the low cost indicated that TPER is a promising option for depth treatment of industrial tailwater.
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Affiliation(s)
- Yonghao Zhang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Kajia Wei
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Anlin Xu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Weiqing Han
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China.
| | - Xiuyun Sun
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Jiansheng Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Jinyou Shen
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Lianjun Wang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China.
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16
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Xu A, Dai X, Wei K, Han W, Li J, Sun X, Shen J, Wang L. Preparation and characterization of a TiO2-NT/SnO2–Sb tubular porous electrode with long service lifetime for wastewater treatment process. RSC Adv 2017. [DOI: 10.1039/c7ra05127a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
We have studied the formation process of a novel TiO2-NTs/SnO2–Sb tubular porous electrode with a long service lifetime for the wastewater treatment process.
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Affiliation(s)
- Anlin Xu
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environment and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Xiang Dai
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environment and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Kajia Wei
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environment and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Weiqing Han
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environment and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Jiansheng Li
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environment and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Xiuyun Sun
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environment and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Jinyou Shen
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environment and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Lianjun Wang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environment and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
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