General chemical equilibrium model for stabilized/solidified wastes Academic Article

abstract

• Chemical equilibrium models have an important role in predicting the behavior of stabilized/solidified (s/s) wastes for risk assessment. Such a model has been developed for wastes treated by conventional solidification/stabilization and it is named SOLTEQ-B. This model is an improvement over a previous version (SOLTEQ) in terms of speed and reliability of convergence. The improvement is due primarily to use of a different method of describing the equilibrium characteristics of calcium silicate hydrate, which is the primary product of cement hydration. SOLTEQ-B was evaluated using experimental data from a series of batch equilibrium tests of pure s/s binder and s/s binder/waste mixtures. SOLTEQ-B accurately predicted pH during neutralization by CO2 or nitric acid and also accurately predicted concentrations of the primary components of cement (Ca, Si, Al, and SO4).

authors

• Batchelor, Bill

published proceedings

• JOURNAL OF ENVIRONMENTAL ENGINEERING

author list (cited authors)

• Park, J. Y., & Batchelor, B.

citation count

• 5

complete list of authors

• Park, JY||Batchelor, B

publication date

• July 2002

publisher

• American Society of Civil Engineers (ASCE)  Publisher

keywords

• Hazardous Wastes
• Leaching
• Metals
• Solidification
• Stabilization

Digital Object Identifier (DOI)

• 10.1061/(ASCE)0733-9372(2002)128:7(653)

start page

• 653

end page

• 661

volume

• 128

issue

• 7

URL

• http://dx.doi.org/10.1061/(asce)0733-9372(2002)128:7(653)