Results 221 to 230 of about 10,689 (251)

Catalytic Ozonation of Sulfosalicylic Acid

Ozone: Science & Engineering, 2002
Abstract The investigation of heterogeneous catalytic ozonation of sulfosalicylic acid (SSal) in aqueous solution is reported in this paper. It was found that catalytic ozonation in the presence of V-O supported on silica gel had a more positive effect on the removal rate (62% in 30 min) of total organic carbon (TOC) than that of ozonation alone (20 ...
Tong Shao Ping, Leng Wen Hua, Zhang Jian Qing, Cao Chu Nan   +3 more
openaire   +1 more source

Catalytic Ozonation of m-Dinitrobenzene

Ozone: Science & Engineering, 2005
The efficiency of catalytic ozonation with homogeneous (containing dissolved ions of Fe2+, Mn2+, Cu2+, Ni2+, Co2+, V5+, Cr3+, Mo6+) and heterogeneous (MnO2, Ni2O3, Fe2O3, CuO, Al2O3, CoO, V2O5, Cr2O3, MoO3, TiO2) catalysts and non-accompanied ozonation was compared for degradation of m-dinitrobenzene (m-DNB).
M. Trapido, Y. Veressinina, R. Munter, J. Kallas   +3 more
openaire   +1 more source

Catalytic ozonation mechanisms of Norfloxacin using Cu–CuFe2O4

Environmental Research, 2023
As an easily recoverable, environmentally friendly and cost-effective catalyst, CuFe2O4 is a promising candidate for the catalytic ozonation of antibiotics in wastewater. However, its catalytic activity is restricted due to its limited active sites and low electron transfer efficiency. In this study, cetyl trimethyl ammonium bromide (CTAB) and Cu0 were
Lanhe, Zhang, Yiran, Li, Jingbo, Guo, Zhongfeng, Kan, Yanping, Jia   +4 more
openaire   +2 more sources

Catalytic Ozonation with Ultrasound

2022
As an efficient process for the degradation of pollutants in water treatment, the combination process of ultrasound and ozone is investigated. In this chapter, the generation of ultrasound and typical reactors are introduced at first, and then the reactivity of compounds, reaction kinetics and influencing factors of the system of ultrasound and ozone ...
openaire   +1 more source

Catalytic ozonation of reverse osmosis membrane concentrates by catalytic ozonation: Properties and mechanisms

Water Environment Research
AbstractNi‐Mn@KL ozone catalyst was prepared for the efficient treatment of reverse osmosis membrane concentrates. The working conditions and reaction mechanism of the ozone‐catalyzed oxidation by Ni‐Mn@KL were systematically studied. Then, a comprehensive CRITIC weighting–coupling coordination evaluation model was established.
Wenquan Sun, Yueqian Cheng, Zhiqiang Xiao, Jun Zhou, Kinjal J. Shah, Yongjun Sun   +5 more
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Catalytic Ozonation over Composite Metal Oxides

2022
Composite materials are good alternatives in performing catalytic ozonation since they might have the intermediate properties of their constituents, which can give them greater recyclability, stability and performance in ozone decomposition. Their use can increase ozonation efficiency at the same time it reduces the drawbacks of heterogeneous catalytic
Rodrigo Pereira Cavalcante, Renato Falcao Dantas   +1 more
openaire   +1 more source

Kinetic decomposition of ozone and para-chlorobenzoic acid (pCBA) during catalytic ozonation

Water Research, 2004
The decomposition of ozone and para-chlorobezoic acid (pCBA) using ozone and ozone/goethite were investigated under various conditions to define the characteristics of ozonation and catalytic ozonation. A continuous analysis of the kinetics of the reaction between ozone and pCBA was established, and the decay rate of ozone and pCBA with/without ...
Park, Jong-Sup, Choi, Heechul, Cho, Jaeweon   +2 more
openaire   +3 more sources

Room-temperature catalytic decomposition of ozone

Atmospheric Environment (1967), 1972
Abstract Thirty-five materials including charcoal, metals and metal oxides were tested for their room-temperature catalytic efficiency in decomposing ozone. Charcoal and nickelous oxide were found to be the best catalysts. A one-half inch thick filter bed of these materials initially removed 95 and 80 per cent, respectively, of the ozone from a 1 ft3
William D. Ellis, Paul V. Tometz
openaire   +1 more source

Catalytic decomposition of ozone in air

Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology, 1997
Abstract The catalytic decomposition of ozone was investigated by using a tubular fixed‐bed reactor. The performance tests and reaction kinetic studies were conducted for two catalysts, i.e., MnO2 and Pt/γ ‐Al2O3 (symbolized as Dash‐220). The experiments were carried out at various constant reaction temperatures (288–338 K) and space velocities (24,000
C.Y. Chang, W.T. Tsai, L. Cheng, C.Y. Chiu, W.H. Huang, Y.H. Yu, H.T. Liou, Y. Ku, J.N. Chen   +8 more
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Paraben degradation using catalytic ozonation over volcanic rocks

Environmental Science and Pollution Research, 2017
Parabens are widely used as antimicrobial and preservatives in pharmaceutical and personal care products and are continuously reaching the water streams. Conventional wastewater treatments are proven inefficient on the removal of this kind of contaminants from wastewater.
João F, Gomes, Maria Emília, Quinta-Ferreira, Raquel, Costa, Rosa M, Quinta-Ferreira, Rui C, Martins   +4 more
openaire   +2 more sources