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Catalytic activity of cerium-doped Ru/AlO during ozonation of dimethyl phthalate

ZHOU Yunrui, ZHU Wanpeng, CHEN Xun

《环境科学与工程前沿（英文）》 2008年 第2卷 第3期   页码 354-357 doi: 10.1007/s11783-008-0059-z

摘要： In this paper, factors influencing the mineralization of dimethyl phthalate (DMP) during catalytic ozonation with a cerium-doped Ru/AlO catalyst were studied. The catalytic contribution was calculated through the results of a comparison experiment. It showed that doping cerium significantly enhanced catalytic activity. The total organic carbon (TOC) removal over the doped catalyst at 100 min reached 75.1%, 61.3% using Ru/AlO catalyst and only 14.0% using ozone alone. Catalytic activity reached the maximum when 0.2% of ruthenium and 1.0% of cerium were simultaneously loaded onto AlO support. Results of experiments on oxidation by ozone alone, adsorption of the catalyst, Ce ion’s and heterogeneous catalytic ozonation confirmed that the contribution of heterogeneous catalytic ozonation was about 50%, which showed the obvious effect of Ru–Ce/AlO on catalytic activity.

关键词： Ru–Ce/AlO     dimethyl phthalate     mineralization     comparison experiment     catalytic ozonation    

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Mechanisms for simultaneous ozonation of sulfamethoxazole and natural organic matters in secondary effluent

《环境科学与工程前沿（英文）》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1368-0

摘要：

• SMX was mainly degraded by hydrolysis, isoxazole oxidation and double-bond addition.

关键词： Sulfamethoxazole     Ozonation     Natural organic matters     Secondary effluent     Degradation mechanism    

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Adsorption in combination with ozonation for the treatment of textile waste water: a critical review

Shraddha Khamparia,Dipika Kaur Jaspal

《环境科学与工程前沿（英文）》 2017年 第11卷 第1期 doi: 10.1007/s11783-017-0899-5

摘要： A combination of adsorption with ozonation proved best for dye removal. Toxicity of the textile effluents can be remarkably reduced by combined method. Wide scope for choice of natural materials for treatment of textile dyes. Intrusion of synthetic textile dyes in the ecosystem has been recognized as a serious issue worldwide. The effluents generated from textiles contain large amount of recalcitrant unfixed dyes which are regarded as emerging contaminants in the field of waste water study. Removal of various toxic dyes often includes diverse and complex set of physico-chemical, biological and advanced oxidation processes adopted for treatment. Adsorption in itself is a well-known technique utilized for treatment of textile effluents using a variety of adsorbents. In addition, ozonation deals with effective removal of dyes using high oxidising power of ozone. The review summarizes dye removal study by a combination of ozonation and adsorption methods. Also, to acquire an effective interpretation of this combined approach of treating wastewater, a thorough study has been made which is deliberated here. Results asserts that, with the combined ability of ozone and a catalyst/adsorbent, there is high possibility of total elimination of dyes from waste water. Several synthetically prepared materials have been used along with few natural materials during the combined treatment. However, considering practical applicability, some areas were identified during the study where work needs to be done for effective implementation of the combined treatment.

关键词： Adsorption     Ozonation     Catalytic Ozonation     Textile dyes     Mineralization    

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Catalytic ozonation performance and surface property of supported Fe

Zhendong YANG, Aihua LV, Yulun NIE, Chun HU

《环境科学与工程前沿（英文）》 2013年 第7卷 第3期   页码 451-456 doi: 10.1007/s11783-013-0509-0

摘要： Fe O was supported on mesoporous Al O or SiO (50 wt.%) using an incipient wetness impregnation method, and Fe O /Al O exhibited higher catalytic efficiency for the degradation of 2,4-dichlorophenoxyacetic acid and -chlorobenzoic acid aqueous solution with ozone. The effect and morphology of supported Fe O on catalytic ozonation performance were investigated based on the characterization results of X-ray diffraction, X-ray photoelectron spectroscopy, BET analysis and Fourier transform infrared spectroscopy. The results indicated that the physical and chemical properties of the catalyst supports especially their Lewis acid sites had a significant influence on the catalytic activity. In comparison with SiO , more Lewis acid sites existed on the surface of Al O , resulting in higher catalytic ozonation activity. During the reaction process, no significant Fe ions release was observed. Moreover, Fe O /Al O exhibited stable structure and activity after successive cyclic experiments. The results indicated that the catalyst is a promising ozonation catalyst with magnetic separation in drinking water treatment.

关键词： heterogeneous catalytic ozonation     iron oxides     supports     surface Lewis acid sites    

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Catalytic ozonation of organic compounds in water over the catalyst of RuO

Jianbing WANG,Guoqing WANG,Chunli YANG,Shaoxia YANG,Qing HUANG

《环境科学与工程前沿（英文）》 2015年 第9卷 第4期   页码 615-624 doi: 10.1007/s11783-014-0706-5

摘要： This research investigates the performances of RuO /ZrO -CeO in catalytic ozonation for water treatment. The results show that RuO /ZrO -CeO was active for the catalytic ozonation of oxalic acid and possessed higher stability than RuO /Al O and Ru/AC. In the catalytic ozonation of dimethyl phthalate (DMP), RuO /ZrO -CeO did not enhance the DMP degradation rate but significantly improved the total organic carbon (TOC) removal rate. The TOC removal in catalytic ozonation was 56% more than that in noncatalytic ozonation. However this does not mean the catalyst was very active because the contribution of catalysis to the overall TOC removal was only 30%. The adsorption of the intermediates on RuO /ZrO -CeO played an important role on the overall TOC removal while the adsorption of DMP on it was negligible. This adsorption difference was due to their different ozonation rates. In the catalytic ozonation of disinfection byproduct precursors with RuO /ZrO -CeO , the reductions of the haloacetic acid and trihalomethane formation potentials (HAAFPs and THMFPs) for the natural water samples were 38%–57% and 50%–64%, respectively. The catalyst significantly promoted the reduction of HAAFPs but insignificantly improved the reduction of THMFPs as ozone reacts fast with the THMs precursors. These results illustrate the good promise of RuO /ZrO -CeO in catalytic ozonation for water treatment.

关键词： ozonation     ruthenium     oxalic acid     dimethyl phthalate     disinfection byproduct    

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Pathway of the ozonation of 2,4,6-trichlorophenol in aqueous solution

PI Yunzheng, WANG Jianlong

《环境科学与工程前沿（英文）》 2007年 第1卷 第2期   页码 179-183 doi: 10.1007/s11783-007-0031-3

摘要： The reaction mechanism and pathway of the ozonation of 2,4,6-trichlorophenol (2,4,6-TCP) in aqueous solution were investigated. The removal efficiency and the variation of HO, Cl, formic acid, and oxalic acid were studied during the semi-batch ozonation experiments (continuous for ozone gas supply, fixed volume of water sample). The results showed that when there was no scavenger, the removal efficiency of 0.1 mmol/L 2,4,6-TCP could reach 99% within 6 min by adding 24 mg/L ozone. The reaction of molecular ozone with 2,4,6-TCP resulted in the formation of HO. The maximal concentration of HO detected during the ozonation could reach 22.5% of the original concentration of 2,4,6-TCP. The reaction of ozone with HO resulted in the generation of a lot of OH° radicals. Therefore, 2,4,6-TCP was degraded to formic acid and oxalic acid by ozone and OH° radicals together. With the inhibition of OH°radicals, ozone molecule firstly degraded 2,4,6-TCP to form chlorinated quinone, which was subsequently oxidized to formic acid and oxalic acid. Two reaction pathways of the degradation of 2,4,6-TCP by ozone and O/OH° were proposed in this study.
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Effect of effluent organic matter on ozonation of bezafibrate

Huan HE,Qian SUI,Shuguang LU,Wentao ZHAO,Zhaofu QIU,Gang YU

《环境科学与工程前沿（英文）》 2015年 第9卷 第6期   页码 962-969 doi: 10.1007/s11783-015-0772-3

摘要： The influence of three effluent organic matter (EfOM) model compounds, humic acid (HA), bovine serum albumin (BSA), and sodium alginate (AGS), on the ozonation of bezafibrate (BF), a typical pharmaceutical and personal care product (PPCP), was investigated. The results show that ozonation efficiently removed BF from aqueous solution with removal efficiencies>95% within 8 min for all conditions. The reaction rate of BF decreased with increasing model compounds concentrations and the influence was more pronounced for HA and BSA, while less pronounced for AGS. Although BF concentration was significantly reduced, the degree of mineralization achieved was only approximately 11%. The addition of HA and BSA improved the mineralization of the solution, while the influence of AGS was minor. The acute toxicity of BF solution during ozonation was determined using the Luminescent bacteria test, and the toxicity exhibited an initial increase and a successive reduction. An overall decreased acute toxicity was observed with an increase of HA. The presence of BSA increased the formation rate of toxicity intermediates and resulted in inhibition peak forward.

关键词： ozonation     bezafibrate     acute toxicity     humic acid     bovine serum albumin     sodium alginate    

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Interlayer-confined two-dimensional manganese oxide-carbon nanotube catalytic ozonation membrane for

《化学科学与工程前沿（英文）》 2022年 第16卷 第5期   页码 731-744 doi: 10.1007/s11705-021-2110-6

摘要： Catalytic ozonation technology has attracted copious attention in water purification owing to its favorable oxidative degradation of pollutants and mitigation of membrane fouling capacity. However, its extensive industrial application has been restricted by the low ozone utilization and limited mass transfer of the short-lived radical species. Interlayer space-confined catalysis has been theoretically proven to be a viable strategy for achieving high catalytic efficiency. Here, a two-dimensional MnO2-incorporated ceramic membrane with tunable interspacing, which was obtained via the intercalation of a carbon nanotube, was designed as a catalytic ozonation membrane reactor for degrading methylene blue. Benefiting from the abundant catalytic active sites on the surface of two-dimensional MnO2 as well as the ultralow mass transfer resistance of fluids due to the nanolayer confinement, an excellent mineralization effect, i.e., 1.2 mg O3(aq) mg–1 TOC removal (a total organic carbon removal rate of 71.5%), was achieved within a hydraulic retention time of 0.045 s of pollutant degradation. Further, the effects of hydraulic retention time and interlayer spacing on methylene blue removal were investigated. Moreover, the mechanism of the catalytic ozonation employing catalytic ozonation membrane was proposed based on the contribution of the Mn(III/IV) redox pair to electron transfer to generate the reactive oxygen species. This innovative two-dimensional confinement catalytic ozonation membrane could act as a nanoreactor and separator to efficiently oxidize organic pollutants and enhance the control of membrane fouling during water purification.

关键词： catalytic membrane reactor     catalytic ozonation     nanoconfinement     two-dimensional manganese oxide    

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Identification of resistant pharmaceuticals in ozonation using QSAR modeling and their fate in electro-peroxone

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-021-1394-6

摘要：

• Effect of converting ozonation to E-peroxone was studied on pharmaceutical removal.

关键词： Ozone     Electro-peroxone     Wastewater     Quantitative structure activity relationship     Advanced oxidation processes    

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Benzene degradation in waste gas by photolysis and photolysis-ozonation: experiments and modeling

Fariba Mahmoudkhani, Maryam Rezaei, Vahid Asili, Mahsasadat Atyabi, Elena Vaisman, Cooper H. Langford, Alex De Visscher

《环境科学与工程前沿（英文）》 2016年 第10卷 第6期 doi: 10.1007/s11783-016-0876-4

摘要： A photochemical model of benzene degradation compares well with experimental data obtained in the Lab. 62 reactions were needed to fully describe benzene degradation. A feasibility study shows that the photolysis of benzene is a cost-effective process. Experimental data and modeling results show that the degradation efficiency will increase when the combination of UV light and ozone is used. The degradation of benzene, a carcinogenic air pollutant, was studied in a gas-phase photochemical reactor with an amalgam lamp emitting ultraviolet light at 185 and 254 nm. Efficient benzene degradation (>70%) was possible for benzene mass flow rates of up to 1.5 mg·min . Adding ozone allowed benzene mass flow rates of up to 5 mg·min to be treated with the same efficiency. In terms of energy consumption, ozone doubles the efficiency of the process. A comprehensive mechanistic simulation model was developed incorporating a chemical kinetics model (62 reactions involving 47 chemical species), a material balance model incorporating diffusion and flow, a flow velocity model, and a light field model. The model successfully predicted the efficiency of the reactor, generally within 20%, which indicates that the model is sound, and can be used for feasibility studies. The prediction of the reactor efficiency in the presence of ozone was less successful, with systematically overestimated efficiency. Condensation of reaction products in the reactor is thought to be the main cause of model inaccuracy. Both experimental data and model predictions show that there is a synergistic effect between ozonation and ultraviolet degradation.

关键词： Photolysis     Ozone     Benzene     Waste gas     Simulation     Synergism    

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Removal of organic matter and disinfection by-products precursors in a hybrid process combining ozonation

Xiaojiang FAN,Yi TAO,Dequan WEI,Xihui ZHANG,Ying LEI,Hiroshi NOGUCHI

《环境科学与工程前沿（英文）》 2015年 第9卷 第1期   页码 112-120 doi: 10.1007/s11783-014-0745-y

摘要： The performance of an integrated process including coagulation, ozonation, ceramic ultrafiltration (UF) and biologic activated carbon (BAC) filtration was investigated for the removal of organic matter and disinfection by-products (DBPs) precursors from micro-polluted surface water. A pilot scale plant with the capacity of 120 m per day was set up and operated for the treatment of drinking water. Ceramic membranes were used with the filtration area of 50 m and a pore size of 60 nm. Dissolved organic matter was divided into five fractions including hydrophobic acid (HoA), base (HoB) and neutral (HoN), weakly hydrophobic acid (WHoA) and hydrophilic matter (HiM) by DAX-8 and XAD-4 resins. The experiment results showed that the removal of organic matter was significantly improved with ozonation in advance. In sum, the integrated process removed 73% of dissolved organic carbon (DOC), 87% of UV , 77% of trihalomethane (THMs) precursors, 76% of haloacetic acid (HAAs) precursors, 83%of trichloracetic aldehyde (CH) precursor, 77% of dichloroacetonitrile (DCAN) precursor, 51% of trichloroacetonitrile (TCAN) precursor, 96% of 1,1,1-trichloroacetone (TCP) precursor and 63% of trichloronitromethane (TCNM) precursor. Hydrophobic organic matter was converted into hydrophilic organic matter during ozonation/UF, while the organic matter with molecular weight of 1000–3000 Da was remarkably decreased and converted into lower molecular weight organic matter ranged from 200–500 Da. DOC had a close linear relationship with the formation potential of DBPs.

关键词： ceramic ultrafiltration(UF)     ozonation     organic matter     hydrophilic     hydrophobic     disinfection by-products    

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Catalytic ozonation of reactive red X-3B in aqueous solution under low pressure: decolorization and OH

Hong SUN,Min SUN,Yaobin ZHANG,Xie QUAN

《环境科学与工程前沿（英文）》 2015年 第9卷 第4期   页码 591-595 doi: 10.1007/s11783-014-0694-5

摘要： Catalytic ozonation of Reactive Red X-3B in aqueous solution had been carried out in an ozone oxidation reactor where Mn-Fe-ceramic honeycomb was used as the catalysts. The presence of Mn-Fe-ceramic honeycomb catalyst could obviously improve the decoloration efficiency of Reactive Red X-3B and the utilization efficiency of ozone compared to the results from non-catalytic ozonation. Adsorption of Reactive Red X-3B had no obviously influence on the degradation efficiency. Addition of tert-butanol significantly decreased the degradation efficiency, indicating that the degradation of Reactive Red X-3B followed the mechanism of hydroxyl radical (OH·) oxidation. The operating variables such as reaction pressure and ozone supply had a positive influence on the degradation efficiency, mainly attributing to facilitate the ozone decomposition and OH· formation.

关键词： catalytic ozonation     reactive red X-3B     ceramic honeycomb     hydroxyl radical (OH·)    

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Significant increase of assimilable organic carbon (AOC) levels in MBR effluents followed by coagulation, ozonation

Xiaojie Shi, Zhuo Chen, Yun Lu, Qi Shi, Yinhu Wu, Hong-Ying Hu

《环境科学与工程前沿（英文）》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1360-8

摘要： Abstract • Annual AOCs in MBR effluents were stable with small increase in warmer seasons. • Significant increase in AOC levels of tertiary effluents were observed. • Coagulation in prior to ozonation can reduce AOC formation in tertiary treatment. • ∆UV254 and SUVA can be surrogates to predict the AOC changes during ozonation. As water reuse development has increased, biological stability issues associated with reclaimed water have gained attention. This study evaluated assimilable organic carbon (AOC) in effluents from a full-scale membrane biological reactor (MBR) plant and found that they were generally stable over one year (125–216 µg/L), with slight increases in warmer seasons. After additional tertiary treatments, the largest increases in absolute and specific AOCs were detected during ozonation, followed by coagulation-ozonation and coagulation. Moreover, UV254 absorbance is known to be an effective surrogate to predict the AOC changes during ozonation. Applying coagulation prior to ozonation of MBR effluents for removal of large molecules was found to reduce the AOC formation compared with ozonation treatment alone. Finally, the results revealed that attention should be paid to seasonal variations in influent and organic fraction changes during treatment to enable sustainable water reuse.

关键词： Assimilable organic carbon (AOC)     MBR effluents     Tertiary treatments     Coagulation     Ozonation    

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Inhibition of bromate formation by reduced graphene oxide supported cerium dioxide during ozonation of

Bei Ye, Zhuo Chen, Xinzheng Li, Jianan Liu, Qianyuan Wu, Cheng Yang, Hongying Hu, Ronghe Wang

《环境科学与工程前沿（英文）》 2019年 第13卷 第6期 doi: 10.1007/s11783-019-1170-z

摘要： GO or RGO promotes bromate formation during ozonation of bromide-containing water. CeO2/RGO significantly inhibits bromate formation compared to RGO during ozonation. CeO2/RGO shows an enhancement on DEET degradation efficiency during ozonation. Ozone (O3) is widely used in drinking water disinfection and wastewater treatment. However, when applied to bromide-containing water, ozone induces the formation of bromate, which is carcinogenic. Our previous study found that graphene oxide (GO) can enhance the degradation efficiency of micropollutants during ozonation. However, in this study, GO was found to promote bromate formation during ozonation of bromide-containing waters, with bromate yields from the O3/GO process more than twice those obtained using ozone alone. The promoted bromate formation was attributed to increased hydroxyl radical production, as confirmed by the significant reduction (almost 75%) in bromate yield after adding t-butanol (TBA). Cerium oxide (less than 5 mg/L) supported on reduced GO (xCeO2/RGO) significantly inhibited bromate formation during ozonation compared with reduced GO alone, and the optimal Ce atomic percentage (x) was determined to be 0.36%, achieving an inhibition rate of approximately 73%. Fourier transform infrared (FT-IR) spectra indicated the transformation of GO into RGO after hydrothermal treatment, and transmission electron microscope (TEM) results showed that CeO2 nanoparticles were well dispersed on the RGO surface. The X-ray photoelectron spectroscopy (XPS) spectra results demonstrated that the Ce3+/Ce4+ ratio in xCeO2/RGO was almost 3‒4 times higher than that in pure CeO2, which might be attributed to the charge transfer effect from GO to CeO2. Furthermore, Ce3+ on the xCeO2/RGO surface could quench Br⋅ and BrO⋅ to further inhibit bromate formation. Meanwhile, 0.36CeO2/RGO could also enhance the degradation efficiency of N,N-diethyl-m-toluamide (DEET) in synthetic and reclaimed water during ozonation.

关键词： Bromate     Catalytic ozonation     Graphene oxide     Cerium dioxide    

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Kinetics and mechanism of nitrobenzene degradation by hydroxyl radicals-based ozonation process enhanced

Weizhou Jiao, Shengjuan Shao, Peizhen Yang, Kechang Gao, Youzhi Liu

《化学科学与工程前沿（英文）》 2021年 第15卷 第5期   页码 1197-1205 doi: 10.1007/s11705-020-1998-6

摘要： This study investigated the indirect oxidation of nitrobenzene (NB) by hydroxyl radicals (·OH) in a rotating packed bed (RPB) using competitive kinetics method with -nitrochlorobenzene as a reference compound. The rate constants of NB with ·OH are calculated to be between (1.465±0.113) × 10 L/(mol·s) and (2.497±0.192) × 10 L/(mol·s). The experimental data are fitted by the modified Arrhenius equation, where the activation energy is 4877.74 J/mol, the order of NB concentration, rotation speed, and initial pH is 0.2425, 0.1400 and 0.0167, respectively. The ozonation process of NB could be enhanced by RPB, which is especially effective for highly concentrated NB-containing wastewater under alkaline conditions. The high gravity technology can accelerate ozone mass transfer and self-decomposition of ozone to produce more ·OH, resulting in an increase in the indirect oxidation rate of NB by ·OH and consequently effective degradation of NB in wastewater.

关键词： high gravity technology     hydroxyl radicals     nitrobenzene     reaction kinetics    

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标题 作者 时间 类型 操作

Catalytic activity of cerium-doped Ru/AlO during ozonation of dimethyl phthalate

ZHOU Yunrui, ZHU Wanpeng, CHEN Xun

期刊论文

Mechanisms for simultaneous ozonation of sulfamethoxazole and natural organic matters in secondary effluent

期刊论文

Adsorption in combination with ozonation for the treatment of textile waste water: a critical review

Shraddha Khamparia,Dipika Kaur Jaspal

期刊论文

Catalytic ozonation performance and surface property of supported Fe

Zhendong YANG, Aihua LV, Yulun NIE, Chun HU

期刊论文

Catalytic ozonation of organic compounds in water over the catalyst of RuO

Jianbing WANG,Guoqing WANG,Chunli YANG,Shaoxia YANG,Qing HUANG

期刊论文

Pathway of the ozonation of 2,4,6-trichlorophenol in aqueous solution

PI Yunzheng, WANG Jianlong

期刊论文

Effect of effluent organic matter on ozonation of bezafibrate

Huan HE,Qian SUI,Shuguang LU,Wentao ZHAO,Zhaofu QIU,Gang YU

期刊论文

Interlayer-confined two-dimensional manganese oxide-carbon nanotube catalytic ozonation membrane for

期刊论文

Identification of resistant pharmaceuticals in ozonation using QSAR modeling and their fate in electro-peroxone

期刊论文

Benzene degradation in waste gas by photolysis and photolysis-ozonation: experiments and modeling

Fariba Mahmoudkhani, Maryam Rezaei, Vahid Asili, Mahsasadat Atyabi, Elena Vaisman, Cooper H. Langford, Alex De Visscher

期刊论文

Removal of organic matter and disinfection by-products precursors in a hybrid process combining ozonation

Xiaojiang FAN,Yi TAO,Dequan WEI,Xihui ZHANG,Ying LEI,Hiroshi NOGUCHI

期刊论文

Catalytic ozonation of reactive red X-3B in aqueous solution under low pressure: decolorization and OH

Hong SUN,Min SUN,Yaobin ZHANG,Xie QUAN

期刊论文

Significant increase of assimilable organic carbon (AOC) levels in MBR effluents followed by coagulation, ozonation

Xiaojie Shi, Zhuo Chen, Yun Lu, Qi Shi, Yinhu Wu, Hong-Ying Hu

期刊论文

Inhibition of bromate formation by reduced graphene oxide supported cerium dioxide during ozonation of

Bei Ye, Zhuo Chen, Xinzheng Li, Jianan Liu, Qianyuan Wu, Cheng Yang, Hongying Hu, Ronghe Wang

期刊论文

Kinetics and mechanism of nitrobenzene degradation by hydroxyl radicals-based ozonation process enhanced

Weizhou Jiao, Shengjuan Shao, Peizhen Yang, Kechang Gao, Youzhi Liu

期刊论文