Computer-Aided Formulation of Silica Defoamers for the Paper Industry.

This article focuses on the development of a computer-aided formulation of silica defoamers for the paper industry. It also provides information on the standard way of making paper as well as some problems encountered during the manufacturing process. The mentioned computer-aided formulation of silica defoamers is based on a nonlinear programming model. The nonlinear programming model is developed based on an empirical equation of the defoamer's performance as well as on a deterministic equation of ingredient cost. Paper manufacturers confirmed the validity of the predicted optimal formula in four out of five paper plant trials.