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A Groundwater Mass Transport and Equilibrium Chemistry Model for Multicomponent Systems
Author(s) -
Cederberg Gail A.,
Street Robert L.,
Leckie James O.
Publication year - 1985
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr021i008p01095
Subject(s) - chemistry , chemical equilibrium , dissociation (chemistry) , thermodynamics , ternary operation , ion exchange , mass transfer , chloride , sorption , mass transport , groundwater , adsorption , ion , inorganic chemistry , chromatography , physics , organic chemistry , computer science , geotechnical engineering , geology , engineering physics , programming language
A mass transport model, TRANQL, for a multicomponent solution system has been developed. The equilibrium interaction chemistry is posed independently of the mass transport equations which leads to a set of algebraic equations for the chemistry coupled to a set of differential equations for the mass transport. Significant equilibrium chemical reactions such as complexation, ion exchange, competitive adsorption, and dissociation of water may be included in TRANQL. Here, a finite element solution is presented first for cadmium, chloride, and bromide transport in a one‐dimensional column where complexation and sorption are considered. Second, binary and ternary ion exchange are modeled and compared to the results of other investigators. Results show TRANQL to be a versatile multicomponent transport model, with potential for extension to a wide range of equilibrium reactions.