Premium
A Computer Technique for Prediction of CaCO3 Precipitation in HCO3‐ Salt Solutions
Author(s) -
Tanji K. K.,
Doneen L. D.
Publication year - 1966
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1966.03615995003000010021x
Subject(s) - aqueous solution , volume (thermodynamics) , precipitation , salt (chemistry) , evaporation , chemistry , atmosphere (unit) , ibm pc compatible , thermodynamics , mineralogy , meteorology , computer science , software , physics , programming language
Abstract Five salt solution systems containing HCO 3 ‐ were concentrated by evaporation, in contact with laboratory atmosphere, to simulate 2‐to 10‐fold reduction in volume. The amounts of CaCO 3 precipitated, final pH, and final solute concentrations were comprehensively predicted from the initial solute concentrations, degree of concentration of initial solution volume, and final P CO 2 . A flow diagram of the computational scheme is presented for IBM 7040 Data Processing System. The basic equilibrium relationships in the CaCO 3 and HCO 3 ‐ ‐CO 3 2‐ cycles are applicable to any aqueous systems which precipitate CaCO 3 due to changes in solute concentration, partial pressure of CO 2 or ambient temperature.