scholarly journals Oxidation of Ammonia Nitrogen with Ozone in Water: A Mini Review

2020 ◽  
Vol 3 (1) ◽  
pp. 17
Author(s):  
Philip Anggo Krisbiantoro ◽  
Koki Kato ◽  
Lina Mahardiani ◽  
Yuichi Kamiya
Keyword(s):  
Reaction Mechanism ◽  
Low Temperature ◽  
Atmospheric Pressure ◽  
Oxidation Reaction ◽  
Review Paper ◽  
Short Review ◽  
Ammonia Nitrogen ◽  
Catalytic Reactions ◽  
Sustainable Environment ◽  
Oxidation Of Ammonia

Since ammonia nitrogen is a pollutant causing eutrophication, it must be removed from wastewater to develop sustainable environment and society. Ozonation, which is an oxidation reaction with ozone, is an effective and efficient method for the removal of ammonia nitrogen in wastewater because the reaction can proceed at low temperature and atmospheric pressure. Although the researches in ozonation of ammonia nitrogen have been going on for the last five decades, the reaction mechanism has not yet been well understood and the papers focusing on the reaction mechanism are very few. In this short review paper, the progress in oxidation of ammonia nitrogen with ozone both in non-catalytic and catalytic reactions is summarized to provide a better understanding on the reaction mechanism for ozonation of ammonia nitrogen in water.

scholarly journals The Use of Power Ultrasound for the Production of PEMFC and PEMWE Catalysts and Low-Pt Loading and High-Performing Electrodes

Catalysts ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 246 ◽  
Author(s):  
Bruno Pollet
Keyword(s):  
Fuel Cell ◽  
Low Temperature ◽  
Room Temperature ◽  
Review Paper ◽  
Short Review ◽  
Synthetic Methods ◽  
Power Ultrasound ◽  
High Performing ◽  
Fuel Cell Materials ◽  
Low Pt Loading

This short review paper highlights some of the research works undertaken over the years by Pollet’s research groups in Birmingham, Cape Town, and Trondheim, in the use of power ultrasound for the fabrication of low temperature fuel cell and electrolyzer catalysts and electrodes. Since the publication of ‘The use of ultrasound for the fabrication of fuel cell materials’ in 2010, there has been an upsurge of international interest in the use of power ultrasound, sonochemistry, and sonoelectrochemistry for the production of low temperature fuel cell and electrolyzer materials. This is because power ultrasound offers many advantages over traditional synthetic methods. The attraction of power ultrasound is the ability to create localized transient high temperatures and pressures, as a result of cavitation, in solutions at room temperature.

scholarly journals Dynamics of flow in albumin solution treated by low-temperature atmospheric pressure helium plasma jet

AIP Advances ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 125216
Author(s):  
Tetsuji Shimizu ◽  
Hiromasa Yamada ◽  
Masanori Fujiwara ◽  
Susumu Kato ◽  
Yuzuru Ikehara ◽  
...  
Keyword(s):  
Low Temperature ◽  
Atmospheric Pressure ◽  
Plasma Jet ◽  
Helium Plasma ◽  
Albumin Solution ◽  
Solution Treated

Ceria imparts superior low temperature activity to nickel catalysts for CO2 methanation

2019 ◽  
Vol 9 (20) ◽  
pp. 5636-5650 ◽  
Author(s):  
Xinpeng Guo ◽  
Hongyan He ◽  
Atsadang Traitangwong ◽  
Maoming Gong ◽  
Vissanu Meeyoo ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Low Temperature ◽  
Nickel Catalysts ◽  
Co2 Methanation

Proposed reaction mechanism for CO2 methanation on NiAl-MO/CeO2-x catalysts.

High phosphorus doping of epitaxial silicon at low temperature and atmospheric pressure

1991 ◽  
Vol 58 (17) ◽  
pp. 1896-1898 ◽  
Author(s):  
T. O. Sedgwick ◽  
P. D. Agnello ◽  
D. Nguyen Ngoc ◽  
T. S. Kuan ◽  
G. Scilla
Keyword(s):  
Low Temperature ◽  
Atmospheric Pressure ◽  
Epitaxial Silicon ◽  
Phosphorus Doping ◽  
High Phosphorus

The Effect of Ge Segregation on Oxidation of Si

1987 ◽  
Vol 105 ◽  
Author(s):  
E. C. Frey ◽  
N. R. Parikh ◽  
M. L. Swanson ◽  
M. Z. Numan ◽  
W. K. Chu
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Epitaxial Layer ◽  
Atmospheric Pressure ◽  
Oxidation Rate ◽  
Oxidation Temperature ◽  
Pressure Oxidation ◽  
Enhanced Oxidation ◽  
High Pressure Oxidation

AbstractWe have studied oxidation of various Si samples including: Ge implanted Si, CVD and MBE grown Si(0.4–4% Ge) alloys, and MBE grown Si-Si(Ge) superlattices. The samples were oxidized in pyrogenic steam (800–1000°C, atmospheric pressure) and at low temperature and high pressure (740°C, 205 atm of dry O2). The oxidized samples were analyzed with RBS/channeling and ellipsometry.An enhanced oxidation rate was seen for all Ge doped samples, compared with rates for pure Si. The magnitude of the enhancement increased with decreasing oxidation temperature. For steam oxidations the Ge was segregated from the oxide and formed an epitaxial layer at the Si-SiO2 interface; the quality of the epitaxy was highest for the highest oxidation temperatures. For high pressure oxidation the Ge was trapped in the oxide and the greatest enhancement in oxidation rate (>100%) was observed.

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