Penjit Srinophakun

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BACKGROUND: An inexpensive and readily available agroindustrial substrate such as rice bran can be used to produce cheap commercial enzymes by solid-state fermentation. This work investigates the production of food-grade proteases by solid-state fermentation using readily available Thai rice bran.
This article proposes a controller design method for the continuous stirred-tank reactor (CSTR) in the biodiesel process. First, the dynamics model of the reactor in the biodiesel continuous process is presented. Then, a controller design method, using both input-output linearization method and PD method, is presented to control the concentration of the(More)
The purpose of this research is to use the fuzzy PD control technique in order to achieve automatic control for a packed-bed reactor in the solid-state fermentation. The lump mathematical model of Koji process is employed in the development of the fuzzy PD controller. Koji process is done by fermenting 4 kilograms of wet soybeans with 200 grams of rice(More)
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