scholarly journals Evidence for perchlorates and the origin of chlorinated hydrocarbons detected by SAM at the rocknest aeolian deposit in gale crater

2013 ◽  
pp. n/a-n/a
Author(s):  
Daniel P. Glavin ◽  
Caroline Freissinet ◽  
Kristen E. Miller ◽  
Jennifer L. Eigenbrode ◽  
Anna E. Brunner ◽  
...  
Keyword(s):  
Chlorinated Hydrocarbons ◽  
Gale Crater ◽  
Aeolian Deposit

scholarly journals Evidence for perchlorates and the origin of chlorinated hydrocarbons detected by SAM at the Rocknest aeolian deposit in Gale Crater

2013 ◽  
Vol 118 (10) ◽  
pp. 1955-1973 ◽  
Author(s):  
Daniel P. Glavin ◽  
Caroline Freissinet ◽  
Kristen E. Miller ◽  
Jennifer L. Eigenbrode ◽  
Anna E. Brunner ◽  
...  
Keyword(s):  
Chlorinated Hydrocarbons ◽  
Gale Crater ◽  
Aeolian Deposit

scholarly journals Sulfur-bearing phases detected by evolved gas analysis of the Rocknest aeolian deposit, Gale Crater, Mars

2014 ◽  
Vol 119 (2) ◽  
pp. 373-393 ◽  
Author(s):  
Amy C. McAdam ◽  
Heather B. Franz ◽  
Brad Sutter ◽  
Paul D. Archer ◽  
Caroline Freissinet ◽  
...  
Keyword(s):  
Evolved Gas Analysis ◽  
Gas Analysis ◽  
Evolved Gas ◽  
Gale Crater ◽  
Aeolian Deposit

scholarly journals Abundances and implications of volatile-bearing species from evolved gas analysis of the Rocknest aeolian deposit, Gale Crater, Mars

2014 ◽  
Vol 119 (1) ◽  
pp. 237-254 ◽  
Author(s):  
Paul Douglas Archer ◽  
Heather B. Franz ◽  
Brad Sutter ◽  
Ricardo D. Arevalo ◽  
Patrice Coll ◽  
...  
Keyword(s):  
Evolved Gas Analysis ◽  
Gas Analysis ◽  
Evolved Gas ◽  
Gale Crater ◽  
Aeolian Deposit

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.

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