Reactive Transport
A three dimensional reactive transport model for sediments, incorporating microniches
... Most reactive transport models have represented sediments as one-dimensional (1-D) systems and have solely considered the development of vertical concentration ...of transport and reaction in ...
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Development of a reactive transport model for field-scale simulation of microbially induced carbonate precipitation
... a reactive transport model that can be used to inform injection strategies for fi eld ‐ scale treatment via MICP under real ‐ world ...contaminant transport, and biogeochemical processes are of ...
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Experimental Study and Reactive Transport Modeling of Boric Acid Leaching of Concrete
... 2-D reactive transport simulations were conducted to determine the degree of concrete dissolution and pH change that may occur as boric acid solution diffuses into the matrix or flows in the crack of a ...
9
Reactive Transport Numerical Model for Durability of Geopolymer Materials
... cements. Reactive transport pro- cesses in geopolymer materials play a crucial role in both the degradation process of building materials as well as in the containment of hazardous ...solving ...
10
Numerical simulation of two-phase multicomponent flow with reactive transport in porous media: application to geological sequestration of CO2*
... the reactive transport problem, a Dirichlet boundary condition equal to the initial condition is imposed for the concentrations, impermeable Neumann boundary conditions are enforced at the upper and lower ...
19
Analysis of Pore Structure Effects on Diffusive Reactive Transport in Opalinus clay
... This work extends previous works on pore network modelling of porous media with limited structural information. Measured solid phase characteristics balance the insufficient geometrical and topological information for ...
10
Geophysical monitoring and reactive transport modeling of ureolytically-driven calcium carbonate precipitation
... dimensional reactive transport modeling with TOUGHREACT successfully simulated changes of major ion concentrations during the experiment, and the calcu- lated TDS changes of pore fluid based on the model ...
20
Convergence of iterative of split-operator approaches for approximating nonlinear reactive transport problems
... Nonlinear reactive transport problems (NRTP’s), ...solute transport combined with nonlinear ho- mogeneous and/or heterogeneous reactions, are important in many application ...include transport ...
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Multiple solutions of a nonlinear reactive transport model using least square pseudo-spectral collocation method
... state reactive transport model which does not have exact closed–form solution and discovers existence of dual or triple solutions in some cases using a new hybrid method based on pseudo–spectral collocation ...
11
Reactive Transport in Porous Media
... of reactive transport what is of interest is not so much the individual concentrations, but the way they are distributed between their aqueous part Q and their fixed part ...
19
A parallelization scheme to simulate reactive transport in the subsurface environment with OGS#IPhreeqc 5.5.7-3.1.2
... PHREEQC is one of the most widely used open-source geo- chemical solvers. It provides a variety of geochemical reac- tion capabilities (Parkhurst and Appelo, 1999, 2013). Besides batch reaction simulations, its current ...
16
Reactive transport with wellbore storages in a single well push–pull test
... The wellbore storage for solute transport refers to the vari- ation of the solute injected into the wellbore during the pro- cesses of the test. A complete SWPP test contains four prin- ciple phases: injection of ...
17
Reactive transport and fluid pathways in fracture controlled flow systems
... 19 Figure 2.4: Map and cross section of the Jabal Akhdar dome 22 Figure 2.5: Geological map of the D A B Fault and surrounding area 25 Figure 2.6: Dip separation on the D A B Fault 25 Fi[r] ...
318
Finite difference approach for modeling multispecies transport in porous media
... Where k is the first order reaction rate (T -1 ).The above equation can be extended for describing the multispecies reactive transport. For example, chlorinated solvent contaminants such as PCE ...
7
Large variations in iron input to an oligotrophic Baltic Sea estuary: impact on sedimentary phosphorus burial
... a reactive transport model to the data for one of the sites and investigate how vivianite formation and P burial in the sediment responds to changes in (1) bottom water salinity, (2) sedimentation rate, (3) ...
18
CHROTRAN 1.0: A mathematical and computational model for in situ heavy metal remediation in heterogeneous aquifers
... bio-reactive transport model (not specifically focused on heavy metals) which models biomass as a separate species, and explicitly models electron donors and acceptors, was presented by Schafer et ...
14
Sculpting of Rocks by Reactive Fluids
... Consequently, reactive transport in porous and/or fractured rocks is, in general, coupled with mechanical ...in reactive fluid-rock systems are strongly influenced by ...of reactive surfaces ...
156
Transport-controlled hydrothermal replacement of calcite by Mg-carbonates
... Reactive transport models are 33 used to predict the rates and spatial patterns of dolomitization e.g., Wilson et al., 2001; 34 Jones and Xiao, 2005; Whitaker and Xiao, 2010 and apply da[r] ...
19
Extraction of Model Parameters for Reactive Solute Transport
... the reactive solute relationships for transport and degradation processes through the rockfill ...of reactive transport, the 1 st to 3 rd theoretical temporal moments have been extracted, ...
14
Linking a simulated annealing based optimization model with PHT3D simulation model for chemically reactuve transport processes to optimally characterize unknown contaminant sources in a former mine site in Australia
... for reactive transport process are compared with synthetically simulated actual concentrations at the observation wells for specified pollution ...chemically reactive multiple ...
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