Influence of Temperature on the Plant/Air Partitioning of Semivolatile Organic Compounds

1997 ◽  
Vol 31 (3) ◽  
pp. 886-890 ◽  
Author(s):  
Peter Kömp ◽  
Michael S. McLachlan
Keyword(s):  
Organic Compounds ◽  
Semivolatile Organic Compounds ◽  
Influence Of Temperature ◽  
Influence Of Temperature On

scholarly journals Study of the influence of temperature the venting depollution process of soils contaminated with volatile organic compounds

2006 ◽  
Vol 71 (12) ◽  
pp. 1353-1361 ◽  
Author(s):  
Gabriela-Alina Brusturean ◽  
Jean Carré ◽  
Delia Perju ◽  
Teodor Todinca
Keyword(s):  
Mathematical Model ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Vapour Pressure ◽  
Unsaturated Soils ◽  
Fold Increase ◽  
Organic Liquids ◽  
Influence Of Temperature ◽  
Volatile Organic ◽  
Influence Of Temperature On

Venting is one of the most used in situ remediation methods for unsaturated soils contaminated with volatile organic compounds (VOC). The development of mathematical models and their validation by means of experimental results allowed the identification of the main parameters which influence the soil depollution process. The influence of temperature on the venting depollution process of soils polluted with volatile organic compounds was studied in this investigation. It was found that the depollution efficiency is strongly influenced by the vapour pressure of the pollutants. The conclusions, derived from the performed experimental determinations allowed characterization of the depollution process by using an "equilibrium" model. This model considers the existence of equilibrium between the four pollution phases (vapour, aqueous, "solid" and non-aqueous phase organic liquids) at any moment in time. In order to calculate the vapour pressure, a modified equation of the Antoine model was used in the model. Application of the mathematical model indicates that a 10 ?C temperature rise leads to a two-fold increase in the vapor pressure of a compound. Comparison of the modeled and experimental curves, as well as the values of the obtained performance critterions, verified that the chosen mathematical model describes the influence of temperature on the depollution process very well. .

scholarly journals INFLUENCE OF TEMPERATURE ON METHANE OUTPUT FROM BOG SLUDGE AND CRUSHED REED RAW MATERIALS

2021 ◽  
Vol 1 ◽  
pp. 191-194
Author(s):  
Sergejs Osipovs ◽  
Aleksandrs Pučkins ◽  
Mihails Pupiņš ◽  
Jeļena Kirilova ◽  
Juris Soms
Keyword(s):  
Organic Compounds ◽  
Biogas Production ◽  
Raw Materials ◽  
Methane Content ◽  
Raw Material ◽  
Effect Of Temperature ◽  
Influence Of Temperature ◽  
Biogas Yield ◽  
Biochemical Processes ◽  
Influence Of Temperature On

The research summarizes information on biochemical processes of biogas production and the parameters that affect the results of its production. The research examines the result of obtaining biogas from bog sludge and a mixture of crushed reed. Particular attention is given to temperature, as a parameter that affects the results of methane and biogas production.The yield of biogas and methane during the bioprocess depends on the effect of temperature. During the experiment, 2.78 L of biogas with an average methane content of 38.7% was obtained from a mixture of bog sludge and crushed reeds. If the content of organic compounds in the sludge was higher, the biogas yield would increase during the process. It is more advantageous to use the raw material mixture for biogas production. 

The effect of temperature on high-resolution TEM image contrast

1995 ◽  
Vol 53 ◽  
pp. 640-641
Author(s):  
T. Geipel ◽  
W. Mader ◽  
P. Pirouz
Keyword(s):  
Form Factor ◽  
Inelastic Scattering ◽  
Accurate Method ◽  
Waller Factor ◽  
Effect Of Temperature ◽  
Specimen Thickness ◽  
Influence Of Temperature ◽  
Debye Waller Factor ◽  
Influence Of Temperature On ◽  
Atomic Form Factor

Temperature affects both elastic and inelastic scattering of electrons in a crystal. The Debye-Waller factor, B, describes the influence of temperature on the elastic scattering of electrons, whereas the imaginary part of the (complex) atomic form factor, fc = fr + ifi, describes the influence of temperature on the inelastic scattering of electrons (i.e. absorption). In HRTEM simulations, two possible ways to include absorption are: (i) an approximate method in which absorption is described by a phenomenological constant, μ, i.e. fi; - μfr, with the real part of the atomic form factor, fr, obtained from Hartree-Fock calculations, (ii) a more accurate method in which the absorptive components, fi of the atomic form factor are explicitly calculated. In this contribution, the inclusion of both the Debye-Waller factor and absorption on HRTEM images of a (Oll)-oriented GaAs crystal are presented (using the EMS software.Fig. 1 shows the the amplitudes and phases of the dominant 111 beams as a function of the specimen thickness, t, for the cases when μ = 0 (i.e. no absorption, solid line) and μ = 0.1 (with absorption, dashed line).

The Influence of Temperature on Successful Reproductions of Burbot, Lota Lota (L.) Under Hatchery Conditions

2010 ◽  
Vol 25 (1) ◽  
pp. 93-105 ◽  
Author(s):  
Daniel Żarski ◽  
Dariusz Kucharczyk ◽  
Wojciech Sasinowski ◽  
Katarzyna Targońska ◽  
Andrzej Mamcarz
Keyword(s):  
Lota Lota ◽  
Influence Of Temperature ◽  
Influence Of Temperature On
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