Analysis of Diffusion and Sorption of Chlorinated Hydrocarbons in Soil by Single-Pellet Moment Technique

1994 ◽  
Vol 28 (7) ◽  
pp. 1312-1319 ◽  
Author(s):  
Canan. Cabbar ◽  
Guelsen. Dogu ◽  
Timur. Dogu ◽  
Ben J. McCoy ◽  
J. M. Smith
Keyword(s):  
Chlorinated Hydrocarbons ◽  
Single Pellet

Disposal of Chlorinated Hydrocarbons through Incineration

1991 ◽  
Vol 24 (12) ◽  
pp. 123-130
Author(s):  
G. Ghelfi
Keyword(s):  
Chlorinated Hydrocarbons

A Case Study of Chlorinated Hydrocarbons in Disposal of Sewage Sludge to Sea

1986 ◽  
Vol 18 (4-5) ◽  
pp. 347-347
Author(s):  
R. R. Sibbald ◽  
A. C. Butler
Keyword(s):  
Sewage Sludge ◽  
Chlorinated Hydrocarbons

Kinetics of Methane-Oxidizing Biofilms for Degradation of Toxic Organics

1988 ◽  
Vol 20 (11-12) ◽  
pp. 167-173 ◽  
Author(s):  
S. E. Strand ◽  
R. M. Seamons ◽  
M. D. Bjelland ◽  
H. D. Stensel
Keyword(s):  
Chlorinated Hydrocarbons ◽  
Enzymatic Oxidation ◽  
Diffusion Kinetics ◽  
Toxic Compound ◽  
Biofilm Model ◽  
Uptake Rates ◽  
Substrate Diffusion ◽  
Toxic Organics ◽  
Competitive Substrate ◽  
Kinetics Of

The kinetics of methane-oxidizing bioreactors for the degradation of toxic organics are modeled. Calculations of the fluxes of methane and toxic chlorinated hydrocarbons were made using a biofilm model. The model simulated the effects of competition by toxics and mediane on their enzymatic oxidation by the methane monooxygenase. Dual-competitive-substrate/diffusion kinetics were used to model biofilm co-metabolism, integrating equations of the following form:where S1 and S2 are the local concentrations of methane and toxic compound, respectively, and r and K are the maximum uptake rates and Monod coefficients, and x is the distance into the biofilm.

Transport of chlorinated hydrocarbons between sewage and sewer atmosphere

1996 ◽  
Vol 34 (3-4) ◽  
pp. 557-564 ◽  
Author(s):  
Bettina S. Haas ◽  
Reimer Herrmann
Keyword(s):  
Mass Transfer ◽  
Aromatic Compounds ◽  
Chlorinated Hydrocarbons ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Sewerage System ◽  
Mass Fluxes ◽  
Single Compound

Sewage containing volatile contaminants is a potential VOC-source in cities. Thus we tried to evaluate volatilization out of the sewerage system by measurements of contaminants in sewer gas and sewage. Our results from a medium sized town with little industry showed that sewer gas is mainly contaminated with alkanes, small aromatic compounds and chlorinated hydrocarbons. For three chlorinated hydrocarbons (chloroform, trichloroethene, tetrachloroethene) we determined mass transfer coefficients out of sewage and used these data to estimate mass fluxes from sewage and emissions out of the sewerage system for two sewer stretches. Considerable emission of chlorinated hydrocarbons from sewage, i.e. fluxes of some 10 to 100 g per m2·d, occurred only when the contaminant input via sewage was between some g and mg per litre for a single compound. For concentrations that were about 3 orders of magnitude less, emissions were negligible.

Extra-Column Effects in Determination of Rate Parameters by the Chromatographic Method

1996 ◽  
Vol 61 (6) ◽  
pp. 844-855 ◽  
Author(s):  
Olga Šolcová ◽  
Petr Schneider
Keyword(s):  
Chromatographic Method ◽  
Dynamic Method ◽  
Axial Dispersion ◽  
Transport Parameters ◽  
Porous Particles ◽  
Loop Detector ◽  
Single Pellet ◽  
Set Up ◽  
Extra Column Effects

It was shown that the sampling loop, detector and connecting elements in the chromatographic set-up for determination of transport parameters by the dynamic method significantly influence the response peaks from columns packed with porous or nonporous particles. A method, based on the use of convolution theorem, was developed which can take these effects into account. The applicability of this method was demonstrated on the case of axial dispersion in a single-pellet-string column (SPSR) packed with nonporous particles. It is possible to handle also responses from columns packed with porous particles by a similar procedure.

Decomposition of Chlorinated Hydrocarbons: A Review

AIHAJ ◽  
1972 ◽  
Vol 33 (7) ◽  
pp. 454-460 ◽  
Author(s):  
MADBULI H. NOWEIR ◽  
EMIL A. PFITZER ◽  
THEODORE F. HATCH
Keyword(s):  
Chlorinated Hydrocarbons

Spatio-temporal trends and climatology of atmospheric chlorinated hydrocarbons over Pakistan

2021 ◽  
Vol 14 (15) ◽  
Author(s):  
Ahmad Hasnain ◽  
Yong Zha ◽  
Muhammad Zaffar Hashmi ◽  
Fatima Rahim ◽  
Yufeng He ◽  
...  
Keyword(s):  
Temporal Trends ◽  
Chlorinated Hydrocarbons ◽  
Spatio Temporal

Oxidative catalysis of chlorinated hydrocarbons by metal-loaded acid catalysts

1991 ◽  
Vol 130 (1) ◽  
pp. 76-85 ◽  
Author(s):  
S CHATTERJEE
Keyword(s):  
Chlorinated Hydrocarbons ◽  
Acid Catalysts ◽  
Oxidative Catalysis

scholarly journals Ash Transformation during Single-Pellet Combustion of Agricultural Biomass with a Focus on Potassium and Phosphorus

2021 ◽  
Vol 35 (2) ◽  
pp. 1449-1464
Author(s):  
Ali Hedayati ◽  
Robert Lindgren ◽  
Nils Skoglund ◽  
Christoffer Boman ◽  
Norbert Kienzl ◽  
...  
Keyword(s):  
Agricultural Biomass ◽  
Single Pellet
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