Numerical simulation of transport and sequential biodegradation of chlorinated aliphatic hydrocarbons using CHAIN_2D

Microbiological degradation of perchloroethylene (PCE) under anaerobic conditions follows a series of chain reactions, in which, sequentially, trichloroethylene (TCE), cis-dichloroethylene (c-DCE), vinylchloride (VC) and ethene are generated. First-order degradation rate constants, partitioning coeAcients and mass exchange rates for PCE, TCE, c-DCE and VC were compiled from the literature. The parameters were used in a case study of pump-and-treat remediation of a PCE-contaminated site near Tilburg, The Netherlands. Transport, non-equilibrium sorption and biodegradation chain processes at the site were simulated using the CHAIN_2D code without further calibration. The modelled PCE compared reasonably well with observed PCE concentrations in the pumped water. We also performed a scenario analysis by applying several increased reductive dechlorination rates, reflecting diAerent degradation conditions (e.g. addition of yeast extract and citrate). The scenario analysis predicted considerably higher concentrations of the degradation products as a result of enhanced reductive dechlorination of PCE. The predicted levels of the very toxic compound VC were now an order of magnitude above the maximum permissible concentration levels. Copyright # 1999 John Wiley & Sons, Ltd.

[1]  Neil J. Hutzler,et al.  Transport of Organic Compounds With Saturated Groundwater Flow: Model Development and Parameter Sensitivity , 1986 .

[2]  P. Roberts,et al.  Field study of organic water quality changes during groundwater recharge in the Palo Alto Baylands , 1982 .

[3]  T. Harmon,et al.  Comparison of intraparticle sorption and desorption rates for a halogenated alkene in a sandy aquifer material. , 1994, Environmental science & technology.

[4]  Frances Z. Parsons,et al.  Kinetics of the depletion of trichloroethene. , 1987, Environmental science & technology.

[5]  William P. Ball,et al.  Long-term sorption of halogenated organic chemicals by aquifer material. 2. Intraparticle diffusion , 1991 .

[6]  Carol R. Johnson,et al.  Effect of Sorption on Biodegradation of Soil Pollutants , 1996 .

[7]  J. Gossett,et al.  Tetrachloroethene transformation to trichloroethene and cis-1,2-dichloroethene by sulfate-reducing enrichment cultures , 1990, Applied and environmental microbiology.

[8]  M. Brusseau,et al.  Sorption kinetics of organic chemicals. Methods, models and mechanisms , 1991 .

[9]  E. Madsen.  Determining in situ biodegradation , 1991 .

[10]  D. F. Weetman,et al.  Volatile Organic Chemicals in the Environment , 1994 .

[11]  B. Travis,et al.  Modeling in Situ Bioremediation of TCE at Savannah River: Effects of Product Toxicity and Microbial Interactions on TCE Degradation , 1997 .

[12]  Perry L. McCarty,et al.  Anaerobic degradation of halogenated 1- and 2-carbon organic compounds. , 1981, Environmental science & technology.

[13]  M. Brusseau.  The effect of nonlinear sorption on transformation of contaminants during transport in porous media , 1995 .

[14]  D. E. Jackson,et al.  Anaerobic degradation of trichloroethylene in soil. , 1985, Environmental science & technology.

[15]  Frances Z. Parsons,et al.  Sequential dehalogenation of chlorinated ethenes. , 1986, Environmental science & technology.

[16]  Sujit Banerjee,et al.  Water solubility and octanol/water partition coefficients of organics. Limitations of the solubility-partition coefficient correlation , 1980 .

[17]  M. Kästner,et al.  Reductive dechlorination of Tri- and tetrachloroethylenes depends on transition from aerobic to anaerobic conditions , 1991, Applied and environmental microbiology.

[18]  René P. Schwarzenbach,et al.  Transport of nonpolar organic compounds from surface water to groundwater. Laboratory sorption studies , 1981 .

[19]  R. W. Cleary,et al.  Chapter 10: Movement of Solutes in Soil: Computer-Simulated and Laboratory Results , 1979 .

[20]  R. Luthy,et al.  Distribution of nonionic surfactant and phenanthrene in a sediment/aqueous system. , 1994, Environmental science & technology.

[21]  R. E. Jessup,et al.  Sorption kinetics of organic chemicals : evaluation of gas-purge and miscible-displacement techniques , 1990 .

[22]  Mark N. Goltz,et al.  A natural gradient experiment on solute transport in a sand aquifer: 3. Retardation estimates and mass balances for organic solutes , 1986 .

[23]  E. Sudicky.  A natural gradient experiment on solute transport in a sand aquifer: Spatial variability of hydraulic conductivity and its role in the dispersion process , 1986 .

[24]  Paul V. Roberts,et al.  A natural gradient experiment on solute transport in a sand aquifer: 4. Sorption of organic solutes and its influence on mobility , 1986 .

[25]  Neil J. Hutzler,et al.  Transport of Organic Compounds With Saturated Groundwater Flow: Experimental Results , 1986 .

[26]  Joseph J. Pignatello,et al.  Mechanisms of Slow Sorption of Organic Chemicals to Natural Particles , 1996 .

[27]  農業土木学会応用水文研究部会,et al.  応用水文 = Applied hydrology , 1991 .

[28]  M. Brusseau,et al.  Rate-Limited Sorption and Nonequilibrium Transport of Organic Chemicals in Low Organic Carbon Aquifer Materials , 1991 .

[29]  H. Holliger.  Reductive dehalogenation by anaerobic bacteria , 1992 .

[30]  L. Preston.  Loading the Dice: A Five-Country Study of Vinyl Chloride Regulation , 1985 .

[31]  Mark L. Brusseau,et al.  Reply [to Comment on Modeling the transport of solutes influenced by multiprocess nonequilibrium , 1989 .

[32]  P L McCarty,et al.  ES Critical Reviews: Transformations of halogenated aliphatic compounds. , 1987, Environmental science & technology.

[33]  M. Brusseau.  Nonequilibrium transport of organic chemicals : the impact of pore-water velocity , 1992 .

[34]  Joel Massmann,et al.  Effects of Vapor Extraction on Contaminant Flux to Atmosphere and Ground Water , 1996 .

[35]  William P. Ball,et al.  Long-term sorption of halogenated organic chemicals by aquifer material. 1. Equilibrium , 1991 .