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Huang H, Xu Y, Lin M, Li X, Zhu H, Wang K, Sun B. Complete genome sequence of Acinetobacter indicus and identification of the hydrolases provides direct insights into phthalate ester degradation. Food Sci Biotechnol 2024; 33:103-113. [PMID: 38186616 PMCID: PMC10766577 DOI: 10.1007/s10068-023-01334-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/30/2023] [Accepted: 05/04/2023] [Indexed: 01/09/2024] Open
Abstract
A strain designated Acinetobacter indicus WMB-7 with the ability to hydrolyze phthalate esters (PAEs) was isolated from the fermented grains of Baijiu. The genome of the strain was sequenced with a length of 3,256,420 bp and annotated with 3183 genes, of which 36 hydrolases encoding genes were identified. The hydrolases were analyzed by protein structure modeling and molecular docking, and 14 enzymes were docked to the ligand di-butyl phthalate with the catalytic active regions, and showed binding affinity. The 14 enzymes were expressed in E. coli and 5 of them showed the ability for PAEs hydrolysis. Enzyme GK020_RS15665 showed high efficiency for PAEs hydrolysis and could efficiently hydrolyze di-butyl phthalate under an initial concentration of 1000 mg/L with a half-life of 4.24 h. This work combined a series of methods for identifying PAEs hydrolases and offered a molecular basis for PAEs degradation of A. indicus strains from Baijiu. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-023-01334-w.
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Affiliation(s)
- Huiqin Huang
- School of Food and Human Health, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
| | - Youqiang Xu
- School of Food and Human Health, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
| | - Mengwei Lin
- School of Food and Human Health, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
| | - Xiuting Li
- School of Food and Human Health, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing, 100048 China
| | - Hua Zhu
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing, 100048 China
- Beijing Huadu Wine Food Limited Liability Company, Beijing, 102212 China
| | - Kun Wang
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing, 100048 China
- Beijing Huadu Wine Food Limited Liability Company, Beijing, 102212 China
| | - Baoguo Sun
- School of Food and Human Health, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing, 100048 China
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing, 100048 China
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Farissi S, Ramesh S, Gado AA, Tejomurtula P, Muthukumar A, Muthuchamy M. Electrochemical oxidation of diethyl phthalate at two dimensional graphite sheet electrodes: optimization and analysis of degradation in water with HRMS. J APPL ELECTROCHEM 2023. [DOI: 10.1007/s10800-023-01860-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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3
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Application of Heterogeneous Catalytic Ozonation in Wastewater Treatment: An Overview. Catalysts 2023. [DOI: 10.3390/catal13020342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Catalytic ozonation is a non-selective mineralization technology of organic matter in water by using active free radicals generated by ozone degradation. Catalytic ozonation technology can be divided into homogeneous catalytic reactions using metal ions as catalysts and heterogeneous catalytic reactions using solid catalysts. Homogeneous catalytic ozonation technology has many problems, such as low mineralization rate, secondary pollution caused by the introduction of metal ions and low utilization efficiency of oxidants, which limit its practical application. Compared with homogeneous catalytic ozonation technology, heterogeneous catalytic ozonation technology has the advantages of easy recovery, lower cost of water treatment, higher activity and improved mineralization rate of organic matter. This overview classifies and describes catalysts for heterogeneous catalytic ozonation technology, including the different types of metal oxides, metal-free catalysts, and substrates used to immobilize catalysts. In addition, the heterogeneous catalytic ozonation process involved in the multiphase complex reaction process is discussed. The effects of different parameters on the performance of heterogeneous catalytic ozonation are also discussed.
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Yang J, Jin X, Fu L, Wu C, Wang Q. Effect of extrusion-spheronization granulation and manganese loading on catalytic ozonation of petrochemical wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:84861-84872. [PMID: 35788489 DOI: 10.1007/s11356-022-21760-3] [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: 04/12/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
The petrochemical secondary effluent (PSE) is typical refractory wastewater derived from the petrochemical industries, which requires advanced treatment due to the strict environmental protection policies. Catalytic ozonation is one of the most widely used advanced oxidation technologies in wastewater treatment because of its high mineralization rate, in which the alumina-based catalyst usually plays an important role. Extrusion-spheronization is a promising technique for the preparation of alumina spheres because the synthesized alumina particles have high sphericity, high specific surface aera and narrow particle size distribution. In this paper, two kinds of alumina-based catalysts (catalyst A: manganese nitrate added after alumina granulation and catalyst B: manganese nitrate added into alumina powder before granulation) were prepared by the extrusion-spheronization method and used for PSE treatment by catalytic ozonation. The prepared alumina samples were characterized by Brunauer-Emmett-Teller (BET) method, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and scanning electron microscopy (SEM), while the wastewater samples were analyzed for Total organic carbon (TOC), UV254 and fluorescence spectroscopy. Results showed that manganese was uniformly distributed in both catalysts, and the specific surface area of two catalysts was 318.36 m2/g and 354.95 m2/g, respectively. Catalytic ozonation experiments were repeated nine times with each catalyst under the same conditions. The TOC removal rates for catalysts A and B in the first run were 48.88% and 49.06%, respectively, then it dropped to 28.05% for catalyst A but remained 47.81% for catalyst B after using for nine times. This implied that the long-term performance of catalyst B would be more stable than catalyst A. Similar result were found in three-dimensional fluorescence analysis. UV254 results indicated that the removal efficiency of aromatic and unsaturated substances by catalyst B was higher than catalyst A. A possible explanation is that the active component manganese oxide formed a catalyst skeleton in catalyst B, which makes it hard to dissolve. Effect of extrusion-spheronization granulation and manganese loading on advanced oxidant treatment of petrochemical wastewater.
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Affiliation(s)
- Jin Yang
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environment Sciences, Beijing, 100012, China
| | - Xiaoguang Jin
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environment Sciences, Beijing, 100012, China
- School of Environment, Tsinghua University, Beijing, 100083, China
| | - Liya Fu
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environment Sciences, Beijing, 100012, China
| | - Changyong Wu
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environment Sciences, Beijing, 100012, China.
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Qibao Wang
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
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Qin W, Ma Y, He T, Hu J, Gao P, Yang S. Enhanced Heterogeneous Fenton-like Process for Sulfamethazine Removal via Dual-Reaction-Center Fe-Mo/rGO Catalyst. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4138. [PMID: 36500765 PMCID: PMC9740472 DOI: 10.3390/nano12234138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/17/2022] [Accepted: 11/20/2022] [Indexed: 06/17/2023]
Abstract
A heterogeneous Fenton-like catalyst with single redox site has a rate-limiting step in oxidant activation, which limited its application in wastewater purification. To overcome this, a bimetallic doping strategy was designed to prepare a heterogeneous Fenton-like catalyst (Fe-Mo/rGO) with a double-reaction center. Combined with electrochemical impedance spectroscopy and density functional theory calculation, it was confirmed that the formation of an electron-rich Mo center and an electron-deficient Fe center through the constructed Fe-O-Mo and Mo-S-C bonding bridges induced a higher electron transfer capability in the Fe-Mo/rGO catalyst. The designed Fe-Mo/rGO catalyst exhibited excellent sulfamethazine (SMT) degradation efficiency in a broad pH range (4.8-8.4). The catalytic performance was hardly affected by inorganic anions (Cl-, SO42- and HCO3-) in the complicated and variable water environment. Compared to Fe/rGO and Mo/rGO catalysts, the SMT degradation efficiency increased by about 14.6 and 1.6 times in heterogeneous Fenton-like reaction over Fe-Mo/rGO catalyst. The electron spin resonance and radical scavenger experiments proved that ·O2-/HO2· and 1O2 dominate the SMT removal in the Fe-Mo/rGO/H2O2 system. Fe and Mo, as active centers co-supported on rGO, significantly enhanced the electron transfer between catalyst, oxidant, and pollutants, which accelerated the reactive oxygen species generation and effectively improved the SMT degradation. Our findings offer a novel perspective to enhance the performance of heterogeneous Fenton-like catalysts by accelerating the electron transfer rate in the degradation of organic pollutants.
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Affiliation(s)
- Weihua Qin
- School of Water Resources and Hydropower Engineering, North China Electric Power University, Beijing 102206, China
| | - Yueming Ma
- National Engineering Laboratory for Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing 102206, China
| | - Ting He
- School of Water Resources and Hydropower Engineering, North China Electric Power University, Beijing 102206, China
| | - Jingbin Hu
- School of Water Resources and Hydropower Engineering, North China Electric Power University, Beijing 102206, China
| | - Pan Gao
- National Engineering Laboratory for Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing 102206, China
| | - Shaoxia Yang
- School of Water Resources and Hydropower Engineering, North China Electric Power University, Beijing 102206, China
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Integrated Electro-Ozonation and Fixed-Bed Column for the Simultaneous Removal of Emerging Contaminants and Heavy Metals from Aqueous Solutions. SEPARATIONS 2022. [DOI: 10.3390/separations9100276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
In the current study, an integrated physiochemical method was utilized to remove tonalide (TND) and dimethyl phthalate (DMP) (as emerging contaminants, ECs), and nickel (Ni) and lead (Pb) (as heavy metals), from synthetic wastewater. In the first step of the study, pH, current (mA/cm2), and voltage (V) were set to 7.0, 30, and 9, respectively; then the removal of TND, DMP, Ni, and Pb with an electro-ozonation reactor was optimized using response surface methodology (RSM). At the optimum reaction time (58.1 min), ozone dosage (9.4 mg L−1), initial concentration of ECs (0.98 mg L−1), and initial concentration of heavy metals (28.9 mg L−1), the percentages of TND, DMP, Ni, and Pb removal were 77.0%, 84.5%, 59.2%, and 58.2%, respectively. For the electro-ozonation reactor, the ozone consumption (OC) ranged from 1.1 kg to 3.9 kg (kg O3/kg Ecs), and the specific energy consumption (SEC) was 6.95 (kWh kg−1). After treatment with the optimum electro-ozonation parameters, the synthetic wastewater was transferred to a fixed-bed column, which was filled with a new composite adsorbent (named BBCEC), as the second step of the study. BBCEC improved the efficacy of the removal of TND, DMP, Ni, and Pb to more than 92%.
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Recent Developments in Activated Carbon Catalysts Based on Pore Size Regulation in the Application of Catalytic Ozonation. Catalysts 2022. [DOI: 10.3390/catal12101085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Due to its highly developed pore structure and large specific surface area, activated carbon is often used as a catalyst or catalyst carrier in catalytic ozonation. Although the pore structure of activated carbon plays a significant role in the treatment of wastewater and the mass transfer of ozone molecules, the effect is complicated and unclear. Because different application scenarios require catalysts with different pore structures, catalysts with appropriate pore structure characteristics should be developed. In this review, we systematically summarized the current adjustment methods for the pore structure of activated carbon, including raw material, carbonization, activation, modification, and loading. Then, based on the brief introduction of the application of activated carbon in catalytic ozonation, the effects of pore structure on catalytic ozonation and mass transfer are reviewed. Furthermore, we proposed that the effect of pore structure is mainly to provide catalytic active sites, promote free radical generation, and reduce mass transfer resistance. Therefore, large external surface area and reasonable pore size distribution are conducive to catalytic ozonation and mass transfer.
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Yuan J, Li Y, Guo Y, Wang Z. Enhanced degradation of dimethyl phthalate in wastewater via heterogeneous catalytic ozonation process: performances and mechanisms. RSC Adv 2022; 12:31024-31031. [PMID: 36349032 PMCID: PMC9620413 DOI: 10.1039/d2ra05048j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022] Open
Abstract
Ozonation process is a promising yet challenging method for the removal of refractory organic matter due to the sluggish reaction for generating hydroxyl radical (˙OH) at a neutral pH condition. Herein, an efficient heterogeneous catalytic ozonation system using CeO2/Al2O3 catalyst was developed to remove dimethyl phthalate (DMP) from wastewater. Under a neutral condition of pH = 6, this system achieved almost 100% DMP removal within 15 min at an optimized catalyst dosage of 30 g L−1 and the ozone flow rate of 22.5 mg min−1. Moreover, the catalytic ozonation system exhibited a stable degradation performance of DMP in a wider pH range (pH = 5–10). The results of electron paramagnetic resonance (EPR) and quantitative tests confirmed the ultrafast conversion of O3 to ˙OH (0.774 μM min−1) on the surface of CeO2 based ceramic catalyst. The quenching experiments further supported the predominant role of ˙OH in the mineralization of DMP. These results highlight the potential of using the heterogeneous catalytic ozonation system for the efficient removal of refractory organic matter from wastewater. An efficient heterogeneous catalytic ozonation system using CeO2/Al2O3 catalyst was developed to remove dimethyl phthalate (DMP) from wastewater.![]()
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Affiliation(s)
- Jia Yuan
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, Tongji Advanced Membrane Technology Center, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yang Li
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, Tongji Advanced Membrane Technology Center, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yun Guo
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, Tongji Advanced Membrane Technology Center, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Zhiwei Wang
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, Tongji Advanced Membrane Technology Center, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
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Enhanced Ozone Oxidation by a Novel Fe/Mn@γ−Al2O3 Nanocatalyst: The Role of Hydroxyl Radical and Singlet Oxygen. WATER 2021. [DOI: 10.3390/w14010019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Catalytic ozonation is a potential alternative to address the dye wastewater effluent, and developing an effective catalyst for catalyzing ozone is desired. In this study, a novel Fe/Mn@γ−Al2O3 nanomaterial was prepared and successfully utilized for catalytic ozonation toward dye wastewater effluent components (dimethyl phthalate and 1−naphthol). The synthesized Fe/Mn@γ−Al2O3 exhibited superior activity in catalytic ozonation of dimethyl phthalate and 1−naphthol in contrast to Fe@γ−Al2O3 and Mn@γ−Al2O3. Quench and probe tests indicated that HO° contributed to almost all removal of dimethyl phthalate, whereas O3, HO°, and singlet oxygen participated in the degradation of 1−naphthol in the Fe/Mn@γ−Al2O3/O3 system. The results of XPS, FT−IR, and EPR suggested that HO° and singlet oxygen were generated from the valence variations of Fe(II/III)and Mn(III/IV). Moreover, the Fe/Mn@γ−Al2O3/O3 system could also have excellent efficacy in actual water samples, including dye wastewater effluent. This study presents an efficient ozone catalyst to purify dye wastewater effluent and deepens the comprehension of the role and formation of reactive species involved in the catalytic ozonation system.
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Kouotou D, Ghalit M, Ndi JN, Martinez LMP, Ouahabi ME, Ketcha JM, Gharibi EK. Removal of metallic trace elements (Pb 2+, Cd 2+, Cu 2+, and Ni 2+) from aqueous solution by adsorption onto cerium oxide modified activated carbon. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:467. [PMID: 34224011 DOI: 10.1007/s10661-021-09267-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
The equilibrium and kinetic studies of removal of Pb2+, Cd2+, Ni2+, and Cu2+ metal ions were carried out using activated carbon prepared from palm kernel shell and doped with CeO2 (Ce/AC). The obtained material carbon was characterized by XRD which showed some crystalline traces of CeO2, SEM displaying the porous texture with spherical pores and the determination of pH of point of zero charge (pHPZC) which was found to be equal to 6. The contact time and adsorbate were thoroughly investigated. The maximum adsorption depends inversely on the hydrated metal radius. This observation was confirmed by calculating the formation energies (ΔH(M(OH)2)) of M(OH)2. The metal ionic radii were acting on calculated sorption capacity and that sorption efficiency related to ionic radii of metal was as follows: R(Ni2+) ≤ R(Cd2+) < R(Cu2+) < R(Pb2+). The texture and morphology of the material after sorption were affected by the metallic ion nature as observed by SEM. The kinetic studies showed that the rate constant (k2) of pseudo-second-order model decreased with the increase of the hydrated cations radii, while the rate constant of intraparticle diffusion increased with the increase of the ionic radii. The Freundlich isotherm model best fit the experimental sorption data for all the metallic ions.
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Affiliation(s)
- Daouda Kouotou
- Applied Physical and Analytical Chemistry Laboratory, Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
- Solid Mineral Chemistry, Applied Chemistry and Environment Laboratory, Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Mohammed Ghalit
- Solid Mineral Chemistry, Applied Chemistry and Environment Laboratory, Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Julius Nsami Ndi
- Applied Physical and Analytical Chemistry Laboratory, Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Luisa M Pastrana Martinez
- Carbon Materials Research Group, Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Granada, Spain
| | - Meriam El Ouahabi
- Géochimie Et Environnement Sédimentaires (AGEs), Département de Géologie, UR Argile, University of Liège, Liège, Belgium
| | - Joseph Mbadcam Ketcha
- Applied Physical and Analytical Chemistry Laboratory, Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - El Khadir Gharibi
- Solid Mineral Chemistry, Applied Chemistry and Environment Laboratory, Faculty of Sciences, Mohammed First University, Oujda, Morocco.
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11
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Pang X, Skillen N, Gunaratne N, Rooney DW, Robertson PKJ. Removal of phthalates from aqueous solution by semiconductor photocatalysis: A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123461. [PMID: 32688192 DOI: 10.1016/j.jhazmat.2020.123461] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/08/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
While phthalate esters are commonly used as plasticizers to improve the flexibility and workability of polymeric materials, their presence and detection in various environments has become a significant concern. Phthalate esters are known to have endocrine-disrupting effects, which affects reproductive health and physical development. As a result, there is now increased focus and urgency to develop effective and energy efficient technologies capable of removing these harmful compounds from the environment. This review explores the use of semiconductor photocatalysis as an efficient and promising solution towards achieving removal and degradation of phthalate esters. A comprehensive review of photocatalysts reported in the literature demonstrates the range of materials including commercial TiO2, solar activated catalysts and composite materials capable of enhancing adsorption and degradation. The degradation pathways and kinetics are also considered to provide the reader with an insight into the photocatalytic mechanism of removal. In addition, through the use of two key platforms (the technology readiness level scale and electrical energy per order), the crucial parameters associated with advancing photocatalysis for phthalate ester removal are discussed. These include enhanced surface interaction, catalyst platform development, improved light delivery systems and overall system energy requirements with a view towards pilot scale and industrial deployment.
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Affiliation(s)
- Xinzhu Pang
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK
| | - Nathan Skillen
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK.
| | - Nimal Gunaratne
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK
| | - David W Rooney
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK
| | - Peter K J Robertson
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK.
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12
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Feng Y, Li X. Catalytic ozonation of phenylamine in water with a manganese ore. RSC Adv 2020; 10:36192-36200. [PMID: 35517113 PMCID: PMC9056967 DOI: 10.1039/d0ra05464j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/16/2020] [Indexed: 11/21/2022] Open
Abstract
Recalcitrant pollutants, which form surface complexes with surface metal sites of the catalyst, are difficult to remove by catalytic ozonation in water. Phenylamine (PA), one of the refractory pollutants, was degraded by ozone catalysis with manganese ore in this paper. And the effectiveness and the mechanism of catalytic ozonation with manganese ore for the degradation of PA in water were studied. After the BET test, the specific surface area of the raw and calcined manganese ore was 27.65 m2 g−1 and 33.49 m2 g−1, respectively. The effects of solution pH, catalyst dose and reaction time on the degradation of PA were evaluated. Results showed that the catalytic potential of calcined manganese ore was better than that of raw manganese ore and ozonation alone in the degradation of PA. It revealed that the increase of hydroxyl radicals generated on the surface of the catalyst or in the solution improved PA degradation. Oxidation of free radicals was the main mechanism of PA degradation in the catalytic ozonation process, occurring with a pseudo-first-order reaction rate at a constant of 0.0993 min−1 (CMP) under the pH of 7.20 and catalyst dose of 3 g L−1. Also, an activation energy of 20.4 kJ mol−1 for PA oxidation over CMP in the presence of O3 was estimated. Recalcitrant pollutants, which form surface complexes with surface metal sites of the catalyst, are difficult to remove by catalytic ozonation in water.![]()
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Affiliation(s)
- Yingming Feng
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology No. 1 Daxue Road Xuzhou Jiangsu 221116 PR China +86-516-83591117.,China Kunlun Contracting & Engineering Corporation Beijing 100013 PR China
| | - Xiaobing Li
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology No. 1 Daxue Road Xuzhou Jiangsu 221116 PR China +86-516-83591117
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13
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Preparation of the Mn-Fe-Ce/γ-Al2O3 ternary catalyst and its catalytic performance in ozone treatment of dairy farming wastewater. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.01.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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14
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Liu L, Li Y, Yoza BA, Hao K, Li QX, Li Y, Wang Q, Guo S, Chen C. A char-clay composite catalyst derived from spent bleaching earth for efficient ozonation of recalcitrants in water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 699:134395. [PMID: 31678886 DOI: 10.1016/j.scitotenv.2019.134395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 09/08/2019] [Accepted: 09/09/2019] [Indexed: 06/10/2023]
Abstract
Catalytic ozonation is an efficient process that can be utilized to degrade recalcitrant organics. Char-clay composite derived from refinery spent bleaching earth (SBE) is an economical and readily available catalyst that can be used during the ozonation treatment of recalcitrants in wastewater. Four catalysts of SBE-N2-650, SBE-N2-850, SBE-O2-650, and SBE-O2-850 were prepared by heating the SBE at 650 and 850 °C under N2 or O2 conditions. High surface OH sites in the SBE-N2-650 and SBE-O2-650 relative to the SBE-N2-850 and SBE-O2-850 resulted in an increase in catalytic activity. Additional carbon (C), that existed in the SBE-N2-650 and SBE-N2-850, had a positive effect on catalytic activity. The SBE-N2-650 exhibited the highest activity among those prepared catalysts. During catalytic ozonation, the SBE-N2-650 increased the mineralization rate of benzoic acid by 36% when compared with single ozonation. Molecular ozone was decomposed at the surface active sites on SBE-N2-650, generating active •OH, •O2-, or 1O2 species. Gas and liquid products having calorific values that are generated during SBE-N2-650 preparation can be further utilized. This study introduces a potential use of SBE for the ozonation treatment of recalcitrant wastewaters.
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Affiliation(s)
- Lu Liu
- State Key Laboratory of Petroleum Pollution Control, , State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Yi Li
- State Key Laboratory of Petroleum Pollution Control, , State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Brandon A Yoza
- Hawaii Natural Energy Institute, University of Hawaii at Manoa, Honolulu, HI 96822, USA
| | - Kanghong Hao
- State Key Laboratory of Petroleum Pollution Control, , State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI 96822, USA
| | - Yiming Li
- State Key Laboratory of Petroleum Pollution Control, , State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Qinghong Wang
- State Key Laboratory of Petroleum Pollution Control, , State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Shaohui Guo
- State Key Laboratory of Petroleum Pollution Control, , State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Chunmao Chen
- State Key Laboratory of Petroleum Pollution Control, , State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.
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15
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Xie Y, Peng S, Feng Y, Wu D. Enhanced mineralization of oxalate by highly active and Stable Ce(III)-Doped g-C 3N 4 catalyzed ozonation. CHEMOSPHERE 2020; 239:124612. [PMID: 31499301 DOI: 10.1016/j.chemosphere.2019.124612] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 07/27/2019] [Accepted: 08/17/2019] [Indexed: 05/25/2023]
Abstract
The degradation of carboxylic acid has been identified as one of the rate-determining steps in the mineralization of organic pollutants by ozonation. In this study, Ce(III)-doped graphitic carbon nitride (Ce-CN) composites with different Ce(III) contents were synthesized and used as catalysts for the ozonation of oxalate. The morphology and structure of the Ce-CN were comprehensively characterized using various techniques such as SEM, XRD, FTIR, and XPS. The results show that the structure of g-C3N4 provided an ideal site for the accommodation of Ce(III) and thus facilitated the formation of surface hydroxyl groups. With 2.5%Ce-CN as a catalyst, the degradation efficiency of oxalate was increased by 47.1% after reaction for 30 min. The decomposition of ozone was accelerated in the presence of Ce-CN. Hydroxyl radicals were recorded by electron spin resonance and identified as the major actives species. Under the catalysis of 2.5%Ce-CN, the production of hydroxyl radicals was increased by 40%. The Ce(III) and surface hydroxyl groups that distributed uniformly on the surface of Ce-CN were speculated as the dual catalytic sites for the complexation of oxalate and activation of ozone, respectively. Ce-CN had a high stability and reutilization capability. It is proposed that a complex was formed between surface Ce(III) and oxalate, and this complex could be more easily attacked by the surrounding ozone and hydroxyl radicals than free oxalate. As oxalate is a typical recalcitrant carboxylic acid, the findings from this study are expected to promote the application of ozonation in the removal of organic pollutants.
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Affiliation(s)
- Yu Xie
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science & Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control Ecological Security, Shanghai, 200092, PR China
| | - Shuhan Peng
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science & Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control Ecological Security, Shanghai, 200092, PR China
| | - Yong Feng
- Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Deli Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science & Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control Ecological Security, Shanghai, 200092, PR China.
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16
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Li WG, Qin W, Song Y, Zheng ZJ, Lv LY. Impact of ozonation and biologically enhanced activated carbon filtration on the composition of micropollutants in drinking water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:33927-33935. [PMID: 30003486 DOI: 10.1007/s11356-018-2700-0] [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: 04/27/2018] [Accepted: 07/03/2018] [Indexed: 06/08/2023]
Abstract
A pilot-scale drinking water treatment process for Songhua River, including conventional treatment (coagulation-settlement and rapid sand filtration), ozonation, biological enhanced activated carbon (BEAC) filtration, and chlorination disinfection, was carried out in this study. To investigate the impact of ozonation and BEAC filtration on removing the composition of micropollutants in drinking water, we detected the micropollutant composition from each stage of the treatment process by non-targeted analysis using a GC-MS technique and compared the results between effluents of single BEAC and O3-BEAC processes. Aromatic compounds and esters could be abated efficiently during single BEAC filtration via biodegradation and adsorption; however, possible metabolic products (i.e., alkenes) were formed by biodegradation. Comparatively, O3-BEAC process could reduce micropollutants much more significantly than single BEAC process especially for aromatic compounds including substituted benzenes and polycyclic aromatic hydrocarbons (PAHs) without the formation of metabolic products through the coupling effect of oxidation, biodegradation, and adsorption, suggesting that ozonation improved the removal potential of micropollutants in the BEAC process. In addition, conventional and novel chlorinated disinfection by-products were also measured during post-chlorination.
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Affiliation(s)
- Wei-Guang Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin, China.
- School of Environment, Harbin Institute of Technology, Harbin, China.
| | - Wen Qin
- School of Environment, Harbin Institute of Technology, Harbin, China.
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China.
| | - Yang Song
- School of Environment, Harbin Institute of Technology, Harbin, China
- Research Institute of Environmental Studies at Greater Bay, Guangzhou University, Guangzhou, 510006, China
| | - Ze-Jia Zheng
- School of Environment, Harbin Institute of Technology, Harbin, China
| | - Long-Yi Lv
- School of Environment, Harbin Institute of Technology, Harbin, China
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17
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Xiong W, Chen N, Feng C, Liu Y, Ma N, Deng J, Xing L, Gao Y. Ozonation catalyzed by iron- and/or manganese-supported granular activated carbons for the treatment of phenol. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:21022-21033. [PMID: 31119544 DOI: 10.1007/s11356-019-05304-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 04/26/2019] [Indexed: 06/09/2023]
Abstract
Iron- and/or manganese-supported catalysts on granular activated carbons (Fe and/or Mn/GACs) were prepared, and their catalytic activities were evaluated by using them to treat phenol and secondary petrochemical effluent via ozonation. The presence of Fe and/or Mn/GACs significantly improved the degradation and degree of phenol mineralization. Changes in dissolved ozone concentrations and the effects of carbonate and tert-butyl alcohol (TBA) indicated that the prepared catalyst enhanced the decomposition of ozone into hydroxyl radicals (·OH), which was determined to be a key factor in catalyzing the ozonation of phenol. Typical intermediate products were identified by GC-MS and HPLC analysis, and a possible degradation pathway of phenol via catalytic ozonation was proposed. The results of XPS, CV, and other experimental data indicated that introducing Fe and/or Mn increased the rate of ozone decomposition into ·OH, and also enhanced the interfacial electron transfer by Fe2+-Fe3+ and Mn2+-Mn3+-Mn4+ redox cycles, resulting in higher catalytic activity. However, the Fe-Mn/GAC surface was shown to undergo galvanic corrosion between Fe3O4 and MnO2, decreasing the catalytic activity. In addition, catalytic ozonation was used to treat secondary petrochemical effluent. The results demonstrated that the Mn/GAC/O3 system significantly improved the quality of phenol-containing wastewater in terms of its COD, TOC, NH4+-N, water color, and ecotoxicity. This study gives a better understanding of the phenol treatment by catalytic ozonation using Fe and/or Mn/GAC.
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Affiliation(s)
- Wei Xiong
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China
| | - Nan Chen
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China.
| | - Chuanping Feng
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China
| | - Yang Liu
- Beijing BHZQ Environmental Engineering Technology, Co., LTD, Beijing, 100176, People's Republic of China
| | - Ningping Ma
- Beijing BHZQ Environmental Engineering Technology, Co., LTD, Beijing, 100176, People's Republic of China
| | - Jian Deng
- Beijing BHZQ Environmental Engineering Technology, Co., LTD, Beijing, 100176, People's Republic of China
| | - Linlin Xing
- Beijing BHZQ Environmental Engineering Technology, Co., LTD, Beijing, 100176, People's Republic of China
| | - Yu Gao
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
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18
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El Hassani K, Kalnina D, Turks M, Beakou BH, Anouar A. Enhanced degradation of an azo dye by catalytic ozonation over Ni-containing layered double hydroxide nanocatalyst. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.08.074] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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19
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Li X, Chen W, Tang Y, Li L. Relationship between the structure of Fe-MCM-48 and its activity in catalytic ozonation for diclofenac mineralization. CHEMOSPHERE 2018; 206:615-621. [PMID: 29778939 DOI: 10.1016/j.chemosphere.2018.05.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 05/09/2018] [Accepted: 05/12/2018] [Indexed: 06/08/2023]
Abstract
Fe-MCM-48 catalyst with a three-dimensional cubic pore structure was directly synthesized via a hydrothermal method, and the mineralization efficiency of diclofenac (DCF) in the catalytic ozonation process (Fe-MCM-48/O3) was assessed. X-ray diffraction (XRD), N2 adsorption desorption, transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) characterizations revealed that Fe existed in the framework of MCM-48, and Fe-MCM-48 possessed a large surface area and a highly ordered cubic mesoporous structure, which could accelerate reactants and products diffusion. Regarding mineralization efficiency, the addition of Fe-MCM-48 significantly improved total organic carbon (TOC) removal, and approximately 49.9% TOC were removed through the Fe-MCM-48/O3 process at 60 min, which was 2.0 times higher than that in single ozonation. Due to this catalyst's superior structure, Fe-MCM-48 showed the better catalytic activity compared with Fe-MCM-41 and Fe loaded MCM-48 (Fe/MCM-48, Fe existed on the surface of MCM-48). DCF removal in the Fe-MCM-48/O3 process was primarily based on ozone direct oxidation. The improvement of mineralization efficiency was attributed to the function of generated hydroxyl radicals (•OH), which indicated that the presence of Fe-MCM-48 accelerated ozone decomposition. Moreover, the negatively charged surface of Fe-MCM-48 and the proper pH value of the DCF solution played an essential role in OH generation.
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Affiliation(s)
- Xukai Li
- School of Chemistry & Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou 510006, China
| | - Weirui Chen
- School of Chemistry & Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou 510006, China
| | - Yiming Tang
- School of Chemistry & Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou 510006, China
| | - Laisheng Li
- School of Chemistry & Environment, South China Normal University, Guangdong Provincial Engineering Technology Research Center for Drinking Water Safety, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou 510006, China.
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20
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Zhang J, Huang GQ, Liu C, Zhang RN, Chen XX, Zhang L. Synergistic effect of microbubbles and activated carbon on the ozonation treatment of synthetic dyeing wastewater. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.02.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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21
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Feng J, Zhang X, Fu J, Chen H. Catalytic ozonation of oxalic acid over rod-like ceria coated on activated carbon. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.03.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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22
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Ghuge SP, Saroha AK. Catalytic ozonation for the treatment of synthetic and industrial effluents - Application of mesoporous materials: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 211:83-102. [PMID: 29408086 DOI: 10.1016/j.jenvman.2018.01.052] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 01/15/2018] [Accepted: 01/17/2018] [Indexed: 06/07/2023]
Affiliation(s)
- Santosh P Ghuge
- Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Anil K Saroha
- Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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23
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Lu S, Liu Y, Feng L, Sun Z, Zhang L. Characterization of ferromagnetic sludge-based activated carbon and its application in catalytic ozonation of p-chlorobenzoic acid. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:5086-5094. [PMID: 28281060 DOI: 10.1007/s11356-017-8680-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/20/2017] [Indexed: 06/06/2023]
Abstract
In order to solve the separation problem of powdered sludge-based activated carbon (SAC), a series of novel ferromagnetic sludge-based activated carbons (FMSACs, with different iron content 2.3, 4.3, and 9.5 wt%) with a good magnetic separation ability were prepared through co-precipitation method in this study. The structure and physicochemical properties of FMSACs and their catalytic ozonation performance on the removal of p-chlorobenzoic acid (p-CBA) were investigated. The saturation magnetization (Ms) of FMSACs was determined in the range of 0.3674-5.7992 emu g-1, and experiments confirmed that these FMSACs could be easily separated by magnetic fields. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis indicated that magnetite and maghemite were the main magnetic phases in FMSACs. Comparing with ozonation alone and SAC catalytic ozonation, the presence of 2.3 wt% - FMSAC improved the degradation of p-CBA during catalytic ozonation from 44 and 70 to 80%. The tertiary butanol inhibition experiment indicated that FMSACs catalytic ozonation process followed hydroxyl radical reaction mechanism. Furthermore, after six repetitive catalytic ozonation runs, 2.3 wt% - FMSAC still showed relatively high catalytic activity for the removal of p-CBA. Consequently, the novel FMSACs with magnetic separation ability and catalytic performance provide a practical pathway for the sludge utilization.
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Affiliation(s)
- Siying Lu
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, China
| | - Yongze Liu
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, China
| | - Li Feng
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, China
| | - Zhongen Sun
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, China
| | - Liqiu Zhang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, China.
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24
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Wu Z, Zhang G, Zhang R, Yang F. Insights into Mechanism of Catalytic Ozonation over Practicable Mesoporous Mn-CeOx/γ-Al2O3 Catalysts. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b04516] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Zongwei Wu
- Key Laboratory of Industrial
Ecology and Environmental Engineering, Ministry of Education, Dalian University of Technology, Linggong Road 2#, Dalian 116024, China
| | - Guoquan Zhang
- Key Laboratory of Industrial
Ecology and Environmental Engineering, Ministry of Education, Dalian University of Technology, Linggong Road 2#, Dalian 116024, China
| | - Ruoyu Zhang
- Key Laboratory of Industrial
Ecology and Environmental Engineering, Ministry of Education, Dalian University of Technology, Linggong Road 2#, Dalian 116024, China
| | - Fenglin Yang
- Key Laboratory of Industrial
Ecology and Environmental Engineering, Ministry of Education, Dalian University of Technology, Linggong Road 2#, Dalian 116024, China
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25
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Li S, Tang Y, Chen W, Hu Z, Li X, Li L. Heterogeneous catalytic ozonation of clofibric acid using Ce/MCM-48: Preparation, reaction mechanism, comparison with Ce/MCM-41. J Colloid Interface Sci 2017; 504:238-246. [DOI: 10.1016/j.jcis.2017.05.042] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 05/03/2017] [Accepted: 05/14/2017] [Indexed: 11/27/2022]
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26
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Bai Z, Yang Q, Wang J. Catalytic ozonation of dimethyl phthalate using Fe 3O 4/multi-wall carbon nanotubes. ENVIRONMENTAL TECHNOLOGY 2017; 38:2048-2057. [PMID: 27748641 DOI: 10.1080/09593330.2016.1245360] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 10/01/2016] [Indexed: 06/06/2023]
Abstract
In this paper, Fe3O4/multi-wall carbon nanotubes composites were prepared, characterized and used as a catalyst for enhancing the ozonation of dimethyl phthalate (DMP) in aqueous solution. The experimental results showed that DMP degradation and mineralization increased by 26% and 20%, respectively, in catalytic ozonation compared with single ozonation, and more H2O2 and organic acids were produced during catalytic ozonation process than single ozonation. The effect of pH, ozone concentration and catalyst dosage on DMP degradation was determined. The addition of tert-butanol and phosphates showed a negative effect on DMP degradation, suggesting that the acidic sites on the catalyst is favorable to ozone decomposition to produce hydroxyl radicals. The possible mechanism for catalytic ozonation of DMP was tentatively proposed. The adsorption of ozone and organics onto the surface of catalyst could improve the DMP degradation.
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Affiliation(s)
- Zhiyong Bai
- a School of Water Resources and Environment , China University of Geosciences , Beijing , People's Republic of China
- b Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET , Tsinghua University , Beijing , People's Republic of China
| | - Qi Yang
- a School of Water Resources and Environment , China University of Geosciences , Beijing , People's Republic of China
| | - Jianlong Wang
- b Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET , Tsinghua University , Beijing , People's Republic of China
- c Beijing Key Laboratory of Radioactive Waste Treatment, INET , Tsinghua University , Beijing , People's Republic of China
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27
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Jabesa A, Ghosh P. Removal of dimethyl phthalate from water by ozone microbubbles. ENVIRONMENTAL TECHNOLOGY 2017; 38:2093-2103. [PMID: 27786022 DOI: 10.1080/09593330.2016.1246610] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 09/18/2016] [Indexed: 06/06/2023]
Abstract
This work investigates the removal of dimethyl phthalate (DMP) from water using ozone microbubbles in a pilot plant of 20 dm3 capacity. Experiments were performed under various reaction conditions to examine the effects of the initial concentration of DMP, pH of the medium, ozone generation rate, and the role of H2O2 on the removal of DMP. The DMP present in water was effectively removed by the ozone microbubbles. The removal was effective in neutral and alkaline media. Increase in the initial concentration of the target pollutant negatively affected its removal efficiency. The removal efficiency dramatically increased from 1% to 99% when the ozone generation rate was increased from 0.28 to 1.94 mg s-1 at pH 7. The total organic carbon measurements revealed that a complete mineralization of DMP was achieved within 1.8 ks at the high ozone feed rate. The use of t-butyl alcohol as the hydroxyl radical scavenger confirmed that the reaction between the target organic compound and ·OH radical dominated over its direct reaction with ozone. The reaction between DMP and ozone followed an overall second-order kinetics. The volumetric mass transfer coefficient of ozone in the reacting system and the enhancement factor increased with increasing initial concentration of DMP. Very low values of Hatta number were obtained at all initial concentrations of DMP and pH, which show that the mass transfer resistance was small.
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Affiliation(s)
- Abdisa Jabesa
- a Department of Chemical Engineering , Indian Institute of Technology Guwahati , Guwahati , India
| | - Pallab Ghosh
- a Department of Chemical Engineering , Indian Institute of Technology Guwahati , Guwahati , India
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28
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He H, Liu Y, Wu D, Guan X, Zhang Y. Ozonation of dimethyl phthalate catalyzed by highly active Cu xO-Fe 3O 4 nanoparticles prepared with zero-valent iron as the innovative precursor. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 227:73-82. [PMID: 28458248 DOI: 10.1016/j.envpol.2017.04.065] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 04/21/2017] [Accepted: 04/23/2017] [Indexed: 06/07/2023]
Abstract
Heterogeneous catalytic ozonation provides a promising alternative in the degradation of recalcitrant contaminants. CuxO-Fe3O4 nanoparticles (CuxFeO NPs, both Cu(I) and Cu(II) were contained, about 70 nm) were creatively synthesized using Fe(0) as the precursor and subsequently employed as the ozonation catalyst for dimethyl phthalate (DMP) degradation. Results showed that DMP degradation by O3/CuxFeO was significantly faster than those ozonation catalyzed by CuO, Fe3O4, or mixture of CuO and Fe3O4 (1:1 M ratio), which was ascribed to the unique CuxFeO NPs that composed of abundant structural Cu(I) (≡Cu(I)). It was among the first revealing the synergistic effect between ≡Cu(I) and surface lattice oxygen (O2-) in HO· generation, resulting in rapid DMP degradation kinetics and high mineralization efficiency. Besides the generation of ≡Cu(I), galvanic corrosion between Fe(0) and Cu(II) also generated structural Fe(II), which could reduce the ≡Cu(II) back to ≡Cu(I), thus compensating the electron loss of ≡Cu(I) and finally obtaining a high-efficiency cycling between ≡Cu(II) and ≡Cu(I). The DMP degradation pathway was introduced based on the intermediates detected. By regulating the (re)-generation of low-valent metal (≡Cu(I)), this study provides an innovative strategy to significantly promote the generation of HO· in catalytic ozonation, which might be promising for advanced wastewater treatment.
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Affiliation(s)
- Hongping He
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science & Engineering, Tongji University, Shanghai 200092, PR China
| | - Ying Liu
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science & Engineering, Tongji University, Shanghai 200092, PR China
| | - Deli Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science & Engineering, Tongji University, Shanghai 200092, PR China.
| | - Xiaohong Guan
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science & Engineering, Tongji University, Shanghai 200092, PR China
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science & Engineering, Tongji University, Shanghai 200092, PR China
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29
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Comparison of Efficiencies and Mechanisms of Catalytic Ozonation of Recalcitrant Petroleum Refinery Wastewater by Ce, Mg, and Ce-Mg Oxides Loaded Al2O3. Catalysts 2017. [DOI: 10.3390/catal7030072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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30
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Decomposition of dimethyl phthalate in aqueous solution by UV–LED/TiO2 process under periodic illumination. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.09.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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31
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Huang G, Pan F, Fan G, Liu G. Application of heterogeneous catalytic ozonation as a tertiary treatment of effluent of biologically treated tannery wastewater. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2016; 51:626-633. [PMID: 27088814 DOI: 10.1080/10934529.2016.1159863] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The present study employed a Mn-Cu/Al2O3 heterogeneous catalytic ozonation process for tertiary treatment of actual tannery wastewater, focusing on its feasibility in that application. The primary factors affecting the removal efficiency of organic pollutants were investigated, including catalyst dosage, ozone dosage, and initial pH value. The experimental results showed that the addition of a Mn-Cu/Al2O3 catalyst improved the removal efficiency of chemical oxygen demand (COD) during ozonation, which initiated a 29.3% increase for COD removal, compared to ozonation alone after 60 min. The optimum pH, catalyst dosage, and ozone dosage were determined to be 7.0, 2.0 g/L, and 0.3 g/h, respectively. Under these conditions, following 60 min of reaction, the COD removal efficiency and the concentration in effluent were 88%, and 17 mg/L, respectively. In addition, the presence of tert-butanol (a well known hydroxyl radical scavenger) strongly inhibited COD removal via Mn-Cu/Al2O3 catalytic ozonation, indicating that the Mn-Cu/Al2O3 catalytic ozonation process follows a hydroxyl radical (OH·) reaction mechanism. The Mn-Cu/Al2O3 catalyst exhibited good stability and reusability. Finally, the kinetic analysis revealed that the apparent reaction rate constant of COD removal with the Mn-Cu/Al2O3 catalytic ozonation system (0.0328 min(-1)) was 2.3 times that of an ozonation system alone (0.0141 min(-1)). These results demonstrated that the catalytic ozonation using Mn-Cu/Al2O3 is an effective and promising process for tertiary treatment of tannery effluent in biological systems.
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Affiliation(s)
- Guangdao Huang
- a School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education , Xinxiang , Henan , P. R. China
- b Environmental Protection & Design institute, Huaqiao University , Quanzhou , Fujian , P. R. China
| | - Feng Pan
- a School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education , Xinxiang , Henan , P. R. China
| | - Guofeng Fan
- b Environmental Protection & Design institute, Huaqiao University , Quanzhou , Fujian , P. R. China
| | - Guoguang Liu
- a School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education , Xinxiang , Henan , P. R. China
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Wang J, Lou Y, Xu C, Song S, Liu W. Magnetic lanthanide oxide catalysts: An application and comparison in the heterogeneous catalytic ozonation of diethyl phthalate in aqueous solution. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2015.12.031] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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33
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Qin H, Chen H. Pretreatment of concentrated leachate by the combination of coagulation and catalytic ozonation with Ce/AC catalyst. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:511-519. [PMID: 26877032 DOI: 10.2166/wst.2015.508] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A raw concentrated leachate produced from membrane bioreactor-nanofiltration (MBR-NF) was taken from Chengdu Chang'an Waste Landfill Site, China. The major fraction of this concentrated leachate was large refractory humic substances. A coagulation-ozonation process was applied to treat this leachate, aiming at enhancing chemical oxygen demand (COD) removal efficiency and increasing its biodegradability. Meanwhile the molecular size distribution of the leachate, before and after coagulation and ozonation treatment, was analyzed by using ultrafiltration membrane separation. Coagulation pretreatment effectively removed varieties of large molecules in the raw concentrated leachate. The addition of Ce/AC greatly improved the oxidative ability of O3 in COD removal in the ozonation of coagulated leachate. The biochemical oxygen demand (BOD5)/COD ratio increased from 0.011 for the untreated concentrated leachate to 0.30 for the effluent of the coagulation-catalytic ozonation process, which indicated that a subsequent biological treatment could be readily conducted. The stability test demonstrated that the Ce/AC catalyst was effective and stable in the catalytic ozonation process. According to the results of molecular size distribution analysis, a direct correlation was observed between the increase of BOD5/COD and the decrease of apparent molecular weight.
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Affiliation(s)
- Hangdao Qin
- College of Material and Chemical Engineering, Tongren University, Tongren 554300, China E-mail:
| | - Honglin Chen
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
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Wu J, Gao H, Yao S, Chen L, Gao Y, Zhang H. Degradation of Crystal Violet by catalytic ozonation using Fe/activated carbon catalyst. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.04.022] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Huang Y, Cui C, Zhang D, Li L, Pan D. Heterogeneous catalytic ozonation of dibutyl phthalate in aqueous solution in the presence of iron-loaded activated carbon. CHEMOSPHERE 2015; 119:295-301. [PMID: 25036944 DOI: 10.1016/j.chemosphere.2014.06.060] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 06/18/2014] [Accepted: 06/21/2014] [Indexed: 05/27/2023]
Abstract
Iron-loaded activated carbon was prepared and used as catalyst in heterogeneous catalytic ozonation of dibutyl phthalate (DBP). The catalytic activity of iron-loaded activated carbon was investigated under various conditions and the mechanisms of DBP removal were deduced. Characterization of catalyst indicated that the iron loaded on activated carbon was mainly in the form of goethite, which reduced its surface area, pore volume and pore diameter. The presence of metals on activated carbon positively contributed to its catalytic activity in ozonation of DBP. Iron loading content of 15% and initial water pH of 8 achieved highest DBP removal among all the tried conditions. Catalyst dosage of 10 mg L(-1) led to approximately 25% of increase in DBP (initial concentration 2 mg L(-1)) removal in 60 min as compared with ozone alone, and when catalyst dosage increased to 100 mg L(-1), the DBP removal was further improved by 46%. Based on a comparison of reaction rates for direct and indirect transformation of DBP, the increased removal of DBP in this study likely occurred via transformation of ozone into hydroxyl radicals on the catalyst surface.
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Affiliation(s)
- Yuanxing Huang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Chenchen Cui
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Daofang Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Liang Li
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Ding Pan
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
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Abdedayem A, Guiza M, Ouederni A. Copper supported on porous activated carbon obtained by wetness impregnation: Effect of preparation conditions on the ozonation catalyst's characteristics. CR CHIM 2015. [DOI: 10.1016/j.crci.2014.07.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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37
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Lü X, Zhang Q, Yang W, Li X, Zeng L, Li L. Catalytic ozonation of 2,4-dichlorophenoxyacetic acid over novel Fe–Ni/AC. RSC Adv 2015. [DOI: 10.1039/c4ra11610k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel Ni–Fe oxides supported on AC can highly improve the degradation and mineralization efficiency of 2,4-D by synergic oxidation.
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Affiliation(s)
- Xianghong Lü
- School of Chemistry & Environment
- South China Normal University
- Guangzhou 510006
- China
| | - Qiuyun Zhang
- School of Chemistry & Environment
- South China Normal University
- Guangzhou 510006
- China
- Key Laboratory of Theoretical Chemistry of Environment
| | - Wenqing Yang
- School of Chemistry & Environment
- South China Normal University
- Guangzhou 510006
- China
| | - Xukai Li
- School of Chemistry & Environment
- South China Normal University
- Guangzhou 510006
- China
| | - Lixuan Zeng
- School of Chemistry & Environment
- South China Normal University
- Guangzhou 510006
- China
| | - Laisheng Li
- School of Chemistry & Environment
- South China Normal University
- Guangzhou 510006
- China
- Key Laboratory of Theoretical Chemistry of Environment
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38
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Dai Q, Wang J, Chen J, Chen J. Ozonation catalyzed by cerium supported on activated carbon for the degradation of typical pharmaceutical wastewater. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2014.01.032] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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Yan H, Lu P, Pan Z, Wang X, Zhang Q, Li L. Ce/SBA-15 as a heterogeneous ozonation catalyst for efficient mineralization of dimethyl phthalate. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.04.032] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Bing J, Wang X, Lan B, Liao G, Zhang Q, Li L. Characterization and reactivity of cerium loaded MCM-41 for p-chlorobenzoic acid mineralization with ozone. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2013.07.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Li H, Huang Y, Cui S. Removal of alachlor from water by catalyzed ozonation on Cu/Al2O3 honeycomb. Chem Cent J 2013; 7:143. [PMID: 23977841 PMCID: PMC3766089 DOI: 10.1186/1752-153x-7-143] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 08/19/2013] [Indexed: 11/26/2022] Open
Abstract
Background The herbicide alachlor (2-chloro-2′6′-diethyl-N-methoxymethylacetanilide) has been known as a probable human carcinogen, and the MCL (minimum contamination level) for drinking water has been set at 2 μg L-1. Therefore, the advanced methods for effectively removing it from water are a matter of interest. Catalyzed ozonation is a promising method for refractory organics degradation. Cu/Al2O3 catalyzed ozonation for degrading an endocrine disruptor (alachlor) in water was investigated. Results Experimental results showed that the ozonation of alachlor can be effectively catalyzed and enhanced by Cu/Al2O3-honeycomb. The main intermediate products formed (aliphatic carboxylic acids) were mineralized to a large extent in the catalytic process. Conclusions This study has shown that Cu/Al2O3-honeycomb is a feasible and efficient catalyst in the ozonation of alachlor in water. Less intermediate oxidation product was produced in the catalytic process than in the uncatalytic one. Furthermore, the mineralization of alachlor could be enhanced by increasing the pH of the reaction solution.
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Affiliation(s)
- Haiyan Li
- Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture), Ministry of Education, Beijing 100044, China.
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42
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Chen Y, Ai Z, Zhang L. Enhanced decomposition of dimethyl phthalate via molecular oxygen activated by Fe@Fe2O3/AC under microwave irradiation. JOURNAL OF HAZARDOUS MATERIALS 2012; 235-236:92-100. [PMID: 22883705 DOI: 10.1016/j.jhazmat.2012.07.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 05/14/2012] [Accepted: 07/05/2012] [Indexed: 06/01/2023]
Abstract
In this study, we demonstrate that the decomposition of dimethyl phthalate under microwave irradiation could be greatly enhanced over Fe@Fe(2)O(3) nanowires supported on activated carbon (Fe@Fe(2)O(3)/AC). The great enhanced decomposition of dimethyl phthalate could be attributed to a unique microwave induced molecular oxygen activation process. Upon microwave irradiation, electrons could be transferred from activated carbon to zero-valent iron, and then react with molecular oxygen to form O(2)(-) and OH radicals for the decomposition of dimethyl phthalate. The deactivation and the regeneration of Fe@Fe(2)O(3)/AC catalyst were systematically studied. We also found that microwave heating could accelerate the electron transferring from AC to Fe@Fe(2)O(3) to generate more reactive oxygen species for the decomposition of DMP than conventional oil bath heating. This novel molecular oxygen activation approach may find applications for wastewater treatment and drinking water purification.
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Affiliation(s)
- Yiling Chen
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China
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43
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Yang S, Wang X, Yang H, Sun Y, Liu Y. Influence of the different oxidation treatment on the performance of multi-walled carbon nanotubes in the catalytic wet air oxidation of phenol. JOURNAL OF HAZARDOUS MATERIALS 2012; 233-234:18-24. [PMID: 22819477 DOI: 10.1016/j.jhazmat.2012.06.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 06/15/2012] [Accepted: 06/16/2012] [Indexed: 06/01/2023]
Abstract
Multi-walled carbon nanotubes (MWCNTs) functionalized by different oxidants (HNO(3)/H(2)SO(4), H(2)O(2), O(3) and air) have been used as catalysts for the wet air oxidation of phenol. To investigate the effect of the oxidation conditions on the structure of the functionalized MWCNTs, various characterization techniques, e.g., scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, Fourier-transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) have been used. The MWCNTs treated with O(3) and H(2)O(2) show higher amounts of oxygen-containing functional groups and carboxylic acid groups, and a weaker acidic nature, in comparison with those treated with other oxidizing agents. All the functionalized MWCNTs exhibit good activity in the catalytic wet air oxidation (CWAO) of phenol. However, the MWCNTs treated with O(3) show the highest activity with desirable stability in comparison with other functionalized MWCNTs, indicating that the functionalization of carbon nanotubes with O(3) is a very promising strategy in synthesizing efficient catalysts for CWAO.
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Affiliation(s)
- Shaoxia Yang
- National Engineering Laboratory for Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing 102206, China.
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44
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Fe/MCM-41 as a promising heterogeneous catalyst for ozonation of p-chlorobenzoic acid in aqueous solution. CHINESE CHEM LETT 2011. [DOI: 10.1016/j.cclet.2010.11.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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45
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Jing Y, Li L, Zhang Q, Lu P, Liu P, Lü X. Photocatalytic ozonation of dimethyl phthalate with TiO2 prepared by a hydrothermal method. JOURNAL OF HAZARDOUS MATERIALS 2011; 189:40-47. [PMID: 21376460 DOI: 10.1016/j.jhazmat.2011.01.132] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Revised: 11/30/2010] [Accepted: 01/27/2011] [Indexed: 05/30/2023]
Abstract
TiO(2) was prepared by a hydrothermal method at a low temperature and used to degrade and mineralize dimethyl phthalate (DMP). TiO(2) was characterized by XRD, TEM, BET and UV-vis techniques. The characteristics of TiO(2) prepared by a hydrothermal method (h-t TiO(2)) included a good crystalline anatase phase, greater surface area, stronger absorption to UV light wavelength and lower agglomeration than TiO(2) prepared by a classic sol-gel method (s-g TiO(2)). The photocatalytic activity of h-t TiO(2) prepared under optimal hydrothermal condition (180°C for 10h) was 2.5 times higher than that of s-g TiO(2) in degrading DMP. The process of photocatalysis combined with UV irradiation and ozonation (TiO(2)/UV/O(3)) considerably improved the mineralization and degradation of DMP compared to photocatalysis combined with UV irradiation (TiO(2)/UV), ozonation combined with UV irradiation (UV/O(3)), and ozonation alone (O(3)). A kinetic study showed the mineralization in TiO(2)/UV/O(3) followed the Langmuir-Hinshelwood model.
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Affiliation(s)
- Yuan Jing
- School of Chemistry & Environment, South China Normal University, Guangzhou 510006, China
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46
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Degradation of dimethyl phthalate (DMP) in aqueous solution by UV/Si–FeOOH/H2O2. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2010.11.039] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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47
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Yang S, Yang X, Shao X, Niu R, Wang L. Activated carbon catalyzed persulfate oxidation of Azo dye acid orange 7 at ambient temperature. JOURNAL OF HAZARDOUS MATERIALS 2011; 186:659-666. [PMID: 21145652 DOI: 10.1016/j.jhazmat.2010.11.057] [Citation(s) in RCA: 220] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 11/12/2010] [Accepted: 11/12/2010] [Indexed: 05/30/2023]
Abstract
Persulfate (PS) oxidative degradation of azo dye acid orange 7 (AO7) in an aqueous solution was studied in the presence of suspended granular activated carbon (GAC) at ambient temperature (e.g., 25°C). It was observed that there existed a remarkable synergistic effect in the GAC/PS combined system. Higher PS concentration and GAC dosage resulted in higher AO7 degrading rates. Near-neutral was the optimal initial pH. Adsorption had an adverse effect on AO7 degradation. AO7 had not only a good decolorization, but a good mineralization. The decomposition of PS followed a first-order kinetics behavior both in the presence and in the absence of AO7. Radical mechanism was studied and three radical scavengers (methanol (MA), tert-butanol (TBA), phenol) were used to determine the kind of major active species taking part in the degradation of AO7 and the location of degradation reaction. It was assumed that the degradation of AO7 did not occur in the liquid phase, but in the porous bulk and boundary layer on the external surface of GAC. SO(4)(-•) or HO•, generated on or near the surface of GAC, played a major role in the AO7 degradation. Finally, the recovery performance of GAC was studied through the GAC reuse experiments.
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Affiliation(s)
- Shiying Yang
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao, China.
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48
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Yang S, Liu Z, Huang X, Zhang B. Wet air oxidation of epoxy acrylate monomer industrial wastewater. JOURNAL OF HAZARDOUS MATERIALS 2010; 178:786-791. [PMID: 20207076 DOI: 10.1016/j.jhazmat.2010.02.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 02/01/2010] [Accepted: 02/01/2010] [Indexed: 05/28/2023]
Abstract
Epoxy acrylate monomer industrial wastewater contained highly concentrated and toxic organic compounds. The wet air oxidation (WAO) and catalytic wet air oxidation (CWAO) were used to eliminate pollutants in order to examine the feasibility of the WAO/CWAO as a pre-treatment method for the industrial wastewater. The results showed that in the WAO 63% chemical oxygen demand (COD) and 41% total organic carbon (TOC) removals were achieved and biological oxygen demand (BOD(5))/COD ratio increased from 0.13 to 0.72 after 3h reaction at 250 degrees C, 3.5MPa and the initial concentration of 100g(COD)/L. Among homogenous catalysts (Cu(2+), Fe(2+), Fe(3+) and Mn(2+) salts), Cu(2+) salt exhibited better performance. CuO catalyst was used in the CWAO of the wastewater, COD and TOC conversion were 77 and 54%, and good biodegradability was achieved. The results proved that the CWAO was an effective pre-treatment method for the epoxy acrylate monomer industrial wastewater.
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Affiliation(s)
- Shaoxia Yang
- National Engineering Laboratory for Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing 102206, China.
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49
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Rao YF, Luo HJ, Wei CH, Luo LF. Catalytic ozonation of phenol and oxalic acid with copper-loaded activated carbon. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s11771-010-0046-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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