scholarly journals Will Aerosol Hygroscopicity Change with Biodiesel, Renewable Diesel Fuels and Emission Control Technologies?

2017 ◽  
Vol 51 (3) ◽  
pp. 1580-1586 ◽  
Author(s):  
Diep Vu ◽  
Daniel Short ◽  
Georgios Karavalakis ◽  
Thomas D. Durbin ◽  
Akua Asa-Awuku
Keyword(s):  
Emission Control ◽  
Renewable Diesel ◽  
Diesel Fuels ◽  
Control Technologies ◽  
Aerosol Hygroscopicity

Oxidative Potential of Semi-Volatile and Non Volatile Particulate Matter (PM) from Heavy-Duty Vehicles Retrofitted with Emission Control Technologies

2009 ◽  
Vol 43 (10) ◽  
pp. 3905-3912 ◽  
Author(s):  
Subhasis Biswas ◽  
Vishal Verma ◽  
James J. Schauer ◽  
Flemming R. Cassee ◽  
Arthur K. Cho ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Emission Control ◽  
Heavy Duty ◽  
Oxidative Potential ◽  
Control Technologies ◽  
Heavy Duty Vehicles

scholarly journals Experience curves for power plant emission control technologies

2004 ◽  
Vol 2 (1/2) ◽  
pp. 52 ◽  
Author(s):  
Edward S. Rubin ◽  
Sonia Yeh ◽  
David A. Hounshell ◽  
Margaret R. Taylor
Keyword(s):  
Power Plant ◽  
Emission Control ◽  
Control Technologies ◽  
Experience Curves

scholarly journals Enhanced hydrophobicity and volatility of submicron aerosols under severe emission control conditions in Beijing

2017 ◽  
Author(s):  
Yuying Wang ◽  
Fang Zhang ◽  
Zhanqing Li ◽  
Haobo Tan ◽  
Hanbing Xu ◽  
...  
Keyword(s):  
Probability Density Function ◽  
Probability Density ◽  
Density Function ◽  
Control Period ◽  
Emission Control ◽  
Control Measures ◽  
Particle Sizes ◽  
Industrial Emissions ◽  
Aerosol Hygroscopicity ◽  
Emission Control Measures

Abstract. A series of strict emission control measures were implemented in Beijing and the surrounding seven provinces to ensure good air quality during the 2015 China Victory Day parade, rendering a unique opportunity to investigate anthropogenic impact of aerosol properties. Submicron aerosol hygroscopicity and volatility were measured during and after the control period using a hygroscopic and volatile tandem differential mobility analyzer (H/V-TDMA) system. Three periods, namely, the control clean period (Clean1), the non-control clean period (Clean2), and the non-control pollution period (Pollution), were selected to study the effect of the emission control measures on aerosol hygroscopicity and volatility. Aerosol particles became more hydrophobic and volatile due to the emission control measures. The hygroscopicity parameter (κ) of 40–200 nm particles decreased by 32.0 %–8.5 % during the Clean1 period relative to the Clean2 period, while the volatile shrink factor (SF) of 40–300 nm particles decreased by 7.5 %–10.5 %. The emission controls also changed the diurnal variation patterns of both the probability density function of κ (κ-PDF) and the probability density function of SF (SF-PDF). During Clean1 the κ-PDF showed one nearly-hydrophobic (NH) mode for particles in the nucleation mode, which was likely due to the dramatic reduction in industrial emissions of inorganic trace gases. Compared to the Pollution period, particles observed during the Clean1 and Clean2 periods exhibited a more significant non-volatile (NV) mode throughout the day, suggesting a more externally-mixed state particularly for the 150 nm particles. Aerosol hygroscopicities increased as particle sizes increased, with the greatest increases seen during the Pollution period. Accordingly, the aerosol volatility became weaker (i.e., SF increased) as particle sizes increased during the Clean1 and Clean2 periods, but no apparent trend was observed during the Pollution period. Based on a correlation analysis of the number fractions of NH and NV particles, we found that a higher number fraction of hydrophobic and volatile particles during the emission control period.

Grace Camet® metal monolith catalytic emission control technologies

1992 ◽  
Vol 13 (1) ◽  
pp. 23-32 ◽  
Author(s):  
C.J. Pereira ◽  
K.W. Plumlee
Keyword(s):  
Emission Control ◽  
Control Technologies

scholarly journals Mercury Emission Control Technologies for PPL Montana-Colstrip Testing

2007 ◽  
Author(s):  
John P. Kay ◽  
Michael L. Jones ◽  
Steven A. Benson
Keyword(s):  
Emission Control ◽  
Mercury Emission ◽  
Control Technologies

Review and Assessment of Fuel Effects and Research Needs in Clean Diesel Technology

2001 ◽  
Author(s):  
David Schmidt ◽  
Victor W. Wong ◽  
William H. Green ◽  
Malcolm A. Weiss ◽  
John B. Heywood
Keyword(s):  
Health Effect ◽  
Emission Control ◽  
Basic Research ◽  
Fuel Processing ◽  
Particulate Emission ◽  
Suggested Approach ◽  
Clean Diesel ◽  
Clean Fuels ◽  
Control Technologies ◽  
Fuel Effects

Abstract This paper reviews the current general understanding of fuel effects on combustion and emissions, fuel processing, and emission control technologies and assesses areas of opportunity in further research in clean diesel systems. The critical basic research areas identified focus on fundamental processes mat would develop a scientific knowledge base for the long-term development of clean diesel technology. The suggested approach, from a basic research perspective, will complement other pragmatic development programs in clean fuels production, application, engine and emission control technologies. Among areas suggested are: studies in developing basic data and modeling of fuel chemistry and emission mechanisms both in cylinder and during after-treatment, interactions of new fuel and engine technologies, gas-to-liquid fuel processing and utilization, and detailed particulate emission characterization and their health effects. The health effect benefits from clean fuels may be more than proportional to the reduction in mass emissions.

Emission Control Technologies for EU Stage IV + EOBD on Small Cars (Part I): Pre-screening of Potential Solutions

1999 ◽  
Author(s):  
A. Caraceni ◽  
V. Cioffi ◽  
F. Garofalo ◽  
A. Senatore ◽  
G. Vittorioso ◽  
...  
Keyword(s):  
Emission Control ◽  
Stage Iv ◽  
Control Technologies
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