Results 31 to 40 of about 3,377 (277)

Degradation of paracetamol by catalytic wet air oxidation and sequential adsorption - Catalytic wet air oxidation on activated carbons [PDF]

, 2012
The concern about the fate of pharmaceutical products has raised owing to the increasing contamination of rivers, lakes and groundwater. The aim of this paper is to evaluate two different processes for paracetamol removal. The catalytic wet air oxidation
Quesada-Peñate, Isariebel, Wilhelm, Anne-Marie, Julcour-Lebigue, Carine, Jáuregui Haza, Ulises Javier, Delmas, Henri, Jauregui-Haza, Ulises J.   +5 more
core   +1 more source

Catalytic Ozonation for Pulp and Paper Mill Wastewater Treatment: COD Reduction and Organic Matter Degradation Mechanism

Separations, 2023
Rapid degradation of pulping and papermaking wastewater in a pulp and paper mill is crucial for recycling purposes yet challenging to achieve. The purpose of this research is to provide a technical guide for the ozone degradation treatment process of ...
Chenxu Zhou, Jiaming Zhang, Yuxuan Cai, Jianhua Xiong   +3 more
doaj   +1 more source

Removal of Xylene fromWaste Air Stream Using Catalytic Ozonation Process [PDF]

سلامت و محیط, 2010
"n "n "nBackgrounds and Objectives: Volatile organic compounds (VOCs) are one of the common groups of contaminants encountered in the industrial activities, emitted through air stream into the atmosphere.
H Mokarami, A Khavanin, G.R Moussavi
doaj  

Performance of the catalytic ozonation process with pumice in removal of humic acids from aqueous solutions

International Journal of Environmental Health Engineering, 2012
Aims: This study was conducted to evaluate the feasibility of applying pumice as a catalyst in the ozonation process for removal of humic acids from aqueous solutions.
Ghorban Asgari, Abdolmotaleb Seyd Mohammadi, Afshin Ebrahimi   +2 more
doaj   +1 more source

Catalytic Potential of Nano-Magnesium Oxide on Degradation of Humic Acids From Aquatic Solutions

Avicenna Journal of Environmental Health Engineering, 2014
Catalytic ozonation is a new and promising process used to remove the contaminants from drinking water and wastewater. This study aimed to evaluate the catalytic potential of nano-magnesium oxide (nano-MgO) for the removal of humic acids (HA) from water.
Ghorban Asgari, Javad Faradmal, Hassan Zolghadr Nasab, Abdolmotaleb Seidmohammadi   +3 more
doaj   +1 more source

Mechanism of One-Step Hydrothermally Synthesized Titanate Catalysts for Ozonation

Molecules, 2022
A titanate nanotube catalyst for ozonation was synthesized with a simple one-step NaOH hydrothermal treatment without energy-consuming calcination.
Geshan Zhang, Anhua Jiang, Xinwen Huang, Tian Yuan, Hanrui Wu, Lichun Li, Zongjian Liu   +6 more
doaj   +1 more source

CATALYTIC OZONATION OF HARDWOOD PULP

chemistry of plant raw material, 2017
First influence of variable valence metal ions on the ozonation process of hardwood pulp was investigated. The oxidative delignification and destruction process of hardwood pulp by ozone treatment of water suspension and ozone treatment in gas phase in the presence of ions Mn2+, Cr3+ и Fe2 by UV-spectrophotometry, IR-spectroscopy and viscosimetry ...
Мухрыгин (Mukhrygin), Кирилл (Kirill) Сергеевич (Sergeevich), Демин (Demin), Валерий (Valerij) Анатольевич (Anatol'evich)   +1 more
openaire   +3 more sources

Treatment of organic pollutants in coke plant wastewater by micro-nanometer catalytic ozonation, A/A/O and reverse osmosis membrane

Water Science and Technology, 2022
Coking wastewater has a complex and highly concentrated chemical composition which is toxic and does not biodegrade easily. Treating the organic pollutants in this wastewater is very challenging.
Ningning Feng, Guozhen Wang, Xinke Kang, Tao Hu, Haiyan Wu, Jianping Xie   +5 more
doaj   +1 more source

Heterogeneous Catalytic Ozonation of Acid blue 62 Over Nanorod Fe-OMS-2

Chemical Engineering Transactions, 2020
In this work, nanorod materials prepared by refluxed method (K-OMS-2) and by co-precipitation method (Fe-OMS-2) were analyzed by X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM). Non-catalytic and heterogeneous catalytic
Tuyet-Mai Tran-Thuy, Hoa-Hung Lam, Quoc-Tuan Dang, Thuy-Sang Phan, Duc-Nguyen Truong-Pham, Dung Van Nguyen, Trung Dang-Bao   +6 more
doaj   +1 more source

Catalytic destruction of stratospheric ozone [PDF]

Journal of Geophysical Research: Atmospheres, 1997
This paper presents a review of the main ozone destroying catalytic cycles operating in the stratosphere. Particular attention is paid to the kinetic aspects of these cycles such as the rate limiting step and chain length. Although it is an important kinetic parameter, the chain length of the various cycles is seldom considered when the various ...
openaire   +1 more source