Start-up, performance and optimization of a compost biofilter treating gas-phase mixture of benzene and toluene

2015 ◽  
Vol 190 ◽  
pp. 529-535 ◽  
Author(s):  
Eldon R. Rene ◽  
Saurajyoti Kar ◽  
Jagannathan Krishnan ◽  
K. Pakshirajan ◽  
M. Estefanía López ◽  
...  
Keyword(s):  
Gas Phase ◽  
Start Up ◽  
Phase Mixture

Remote THz Monitoring of an Evolving Gas-Phase Mixture

CLEO: 2013 ◽  
2013 ◽  
Author(s):  
Joseph S. Melinger ◽  
Yihong Yang ◽  
Maboubeh Mandeghar ◽  
D. Grischkowsky
Keyword(s):  
Gas Phase ◽  
Phase Mixture

scholarly journals Comprehensive diagnosis of PCDD/F emission from three hazardous waste incinerators

2018 ◽  
Vol 5 (7) ◽  
pp. 172056 ◽  
Author(s):  
Xuan Cao ◽  
Longjie Ji ◽  
Xiaoqing Lin ◽  
William R. Stevens ◽  
Minghui Tang ◽  
...  
Keyword(s):  
Gas Phase ◽  
Hazardous Waste ◽  
De Novo ◽  
Solid Phase ◽  
Bag Filter ◽  
Start Up ◽  
Equivalent Quantity ◽  
Comprehensive Diagnosis ◽  
Wet Scrubber ◽  
Waste Incinerators

Comprehensive diagnosis of polychlorinated dibenzo- p -dioxin and dibenzofuran (PCDD/F) emissions was systematically conducted on three hazardous waste incinerators (HWIs). Results indicated that PCDD/F mainly existed in the solid phase before the bag filter. This was especially true for higher chlorinated dioxin and furan congeners (hexa-, hepta- and octa-). The aged bag filters tended to increase the gas-phase PCDD/F. Emissions also increased due to PCDD/F desorption from circulated scrubbing solution and plastic packing media used in the wet scrubber. The PCDD/F concentrations were elevated during the start-up process, reaching up to 5.4 times higher than those measured during the normal operating period. The ratios of PCDFs/PCDDs revealed that the surface-catalysed de novo synthesis was the dominant pathway of PCDD/F formation. Installation of more efficient fabric filters, intermittent replacement of circulated scrubbing solution will result in reduced PCDD/F emission. Additionally, 2,3,4,7,8-PeCDF correlated well with the international toxic equivalent quantity (I-TEQ) value, which suggests that 2,3,4,7,8-PeCDF could act as an I-TEQ indicator.

Ammonia biofiltration and nitrous oxide generation during the start-up of gas-phase compost biofilters

2012 ◽  
Vol 46 ◽  
pp. 659-664 ◽  
Author(s):  
Guilherme D.N. Maia ◽  
George B. Day V ◽  
Richard S. Gates ◽  
Joseph L. Taraba
Keyword(s):  
Nitrous Oxide ◽  
Gas Phase ◽  
Start Up

The photolysis and radiolysis of H2S−CH4 gas-phase mixture

1987 ◽  
Vol 119 (2) ◽  
pp. 95-100
Author(s):  
M. A. Kurbanov ◽  
V. R. Rustamov ◽  
Kh. F. Mamedov ◽  
Z. I. Iskenderova
Keyword(s):  
Gas Phase ◽  
Phase Mixture

scholarly journals Detecting Chirality in Mixtures Using Nanosecond Photoelectron Circular Dichroism

2022 ◽  
Author(s):  
Simon Ranecky ◽  
G. Barratt Park ◽  
Peter C Samartzis ◽  
Ioannis C. Giannakidis ◽  
Dirk Schwarzer ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
High Resolution ◽  
Gas Phase ◽  
Molecular Beams ◽  
Structural Isomers ◽  
Photon Ionization ◽  
Phase Mixture ◽  
Circular Dichroïsm

We report chirality detection of structural isomers in a gas phase mixture using nanosecond photoelectron circular dichroism (PECD). Combining pulsed molecular beams with high-resolution resonance enhanced multi-photon ionization (REMPI) allows...

scholarly journals An Automated Procedure for CO in Cigarette Smoke, Using a 20-Port Syringe Smoking Machine

1973 ◽  
Vol 7 (2) ◽  
Author(s):  
P.F. Collins ◽  
J.F. Williams
Keyword(s):  
Standard Deviation ◽  
Gas Phase ◽  
Cigarette Smoke ◽  
Relative Standard Deviation ◽  
Particulate Phase ◽  
Start Up ◽  
Relative Standard ◽  
Infra Red ◽  
Repeated Analysis

AbstractA procedure for the determination of CO in the gas phase of cigarette smoke has been developed. Cigarettes are smoked on a 20-port syringe-type smoking machine and the gas phase is sampled by a specially designed sampling unit without appreciably affecting the level of particulate phase components or the operation of the smoker. After mixing, the concentration of CO in the gas phase is measured by nondispersive infra-red analysis. All operations are carried out automatically except the initial start-up, calibration of the analyser, and calculation of results. The procedure has been applied to a variety of cigarette brands with results ranging from 1.2 to 2.0 ml of CO per puff. The precision of the procedure was determined by repeated analysis of a standard cigarette over a four-month period. For a single value representing 100 cigarettes, the relative standard deviation was found to be 2.2 % for ml of CO per cigarette and 1.1 % for ml of CO per puff.

Research on Exhaust Gas Temperature inside Catalytic Honeycomb Monolith Channel of Natural Gas Burner Start-up

2012 ◽  
Vol 621 ◽  
pp. 223-227 ◽  
Author(s):  
Zhi Hua Wang ◽  
Shi Hong Zhang
Keyword(s):  
Natural Gas ◽  
Gas Phase ◽  
Catalytic Combustion ◽  
Combustion Process ◽  
Pollutant Emissions ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
Start Up ◽  
Honeycomb Monolith ◽  
Exhaust Gas Temperature

This article discussed exhaust gas temperature and pollutant emissions characteristics of the combustion of rich natural gas-air mixtures in Pd metal based honeycomb monoliths in burner during the period of start-up process. The burner need to be ignited by gas phase combustion with the excessive air coefficient (a) at 1.3. The experimental results in catalytic monolith can be explained from SPFR. In this experiment, exhaust gas temperature and pollutant emissions were measured by thermocouple K of diameter 0.5 and the analyser every 1 minute, respectively. The finding would be applied for industrial catalytic combustion process start-up.

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