scholarly journals Identification Odor Compounds Emitted During the Heating of Molding Sands

2017 ◽  
Vol 17 (2) ◽  
pp. 178-182
Author(s):  
J. Faber ◽  
K. Perszewska
Keyword(s):  
High Temperature ◽  
Research Tool ◽  
Gas Chromatograph ◽  
Odor Compounds ◽  
Odorous Compounds

Abstract The paper presents the results of analyzes of gases emitted during exposure to high temperature foundry molding sands, where binders are organic resins. As a research tool has been used special gas chromatograph designed to identify odorous compounds including the group of alkanes.

Remotely operated high temperature vent valve for a gas chromatograph/mass spectrometer

1972 ◽  
Vol 44 (7) ◽  
pp. 1332-1334 ◽  
Author(s):  
J. P. Mieure ◽  
J. G. Converse ◽  
M. W. Dietrich ◽  
Lewis. Fowler
Keyword(s):  
High Temperature ◽  
Mass Spectrometer ◽  
Gas Chromatograph ◽  
Vent Valve

scholarly journals The Deterioration Mechanism of Diester Aero Lubricating Oil at High Temperature

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Ting Yao ◽  
Hongwei Yang ◽  
Li Guo ◽  
Yiwei Fei ◽  
Huize Jiang ◽  
...  
Keyword(s):  
High Temperature ◽  
Physicochemical Properties ◽  
High Temperatures ◽  
Mass Spectrometer ◽  
Operating Conditions ◽  
Lubricating Oil ◽  
Gas Chromatograph ◽  
Thermal Pyrolysis ◽  
Specific Device ◽  
Deterioration Mechanism

The deterioration of aero lubricating oil at high temperatures was accelerated by using a specific device simulating the operating conditions of engines, where the deterioration mechanism was obtained. Structures of the deteriorated lubricating oils were analyzed by gas chromatograph/mass spectrometer. From the results, it can be concluded that deterioration of aero lubricating oil at high temperatures was composed of thermal pyrolysis, oxidation, and polymerization, with the generation of a variety of products, such as alcohols, aldehydes, acids, and esters, which caused the deterioration of physicochemical properties of the aero lubricating oil.

scholarly journals The investigation of combined ventilation-biofilter systems using recycled treated wastewater on odor reduction efficiency

2020 ◽  
Vol 33 (7) ◽  
pp. 1209-1216
Author(s):  
Andi Febrisiantosa ◽  
Hong L. Choi ◽  
Anriansyah Renggaman ◽  
Sartika I. A. Sudiarto ◽  
Joonhee Lee
Keyword(s):  
Ventilation System ◽  
Plug Flow ◽  
Ammonia Concentration ◽  
Treated Wastewater ◽  
Total Suspended Particles ◽  
Odor Removal ◽  
Odor Compounds ◽  
Odorous Compounds ◽  
Microclimate Conditions ◽  
Swine House

Objective: The present study aimed to evaluate the performance of odor abatement by using two different ventilation-biofilter systems with recycled stablized swine wastewater.Methods: The performance of odor removal efficiency was evaluated using two different ventilation-biofilter-recycled wastewater arrangements. A recirculating air-flow ventilation system connected to a vertical biofilter (M1) and a plug-flow ventilation system connected to a horizontal biofilter (M2) were installed. Water dripping over the surface of the biofilter was recycled at a flow rate of 0.83 L/h in summer and 0.58 L/h in winter to reduce odorous compounds and particulate matter (PM). The experiments were performed for 64 days with M1 and M2 to investigate how these two ventilation-biofilter systems influenced the reduction of odor compounds in the model houses. Odorous compounds, NH3 and volatile organic compounds (VOCs) were analyzed, and microclimatic variables such as temperature, humidity, and PM were monitored.Results: Ammonia concentration inside M1 was about 41% higher on average than that in M2. PM and total suspended particles (TSPs) inside M1 were about 62.2% and 69.9%, respectively, higher than those in M2. TSPs in the model house were positively correlated with the concentration of NH3 and VOCs.Conclusion: M2 emitted lower concentration of odorous compounds than M1. Moreover, M2 could maintain the optimum temperature condition for a swine house during the cooler season. The plug-flow ventilation–horizontal biofilter system could be used for pig houses to minimize air pollution produced by swine farming activities and maintain optimum microclimate conditions for pigs.

Sign in / Sign up

Export Citation Format

Share Document