Changes in moisture content of corn starch during pneumatic conveying
1991
Asbi bin Ali (Pertanian Malaysia Univ., Serdang, Selangor (Malaysia). Dept. of Food Technology)
Pneumatic conveying as a means of material handling is widely used in many food processing operations. Moisture content of bulk solids is the most important factor controlling the flow properties of granular materials. This paper reports an investigation on the effect of pneumatic conveying on the moisture content of corn starch powder. Changes in the moisture content of corn starches during flow in the pneumatic transport conveying line were found to be adequately described by drying theories. Fick's second law for diffusion out of spheres was used to fit the experimental drying data and the diffusion coefficients for the change in moisture content of the corn starch were calculated to be in the range of 1.1 x 10** to 8.3 x 10**m/s.
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