Camaño Echavarria Jairo Andres, Rivera Torres Ana Maria, Zapata Montoya José Edgar
Nutrition and Food Technology Group, University of Antioquia, 67 Street Nº 53 - 108, 050010 Medellín, Colombia.
Heliyon. 2021 Apr 18;7(4):e06798. doi: 10.1016/j.heliyon.2021.e06798. eCollection 2021 Apr.
The sorption isotherms, thermodynamic properties and calculation for confirming the isokinetic theory of dry chemical silage of red tilapia viscera ( spp.) obtained in a direct passive solar dryer were determined. Sorption isotherms were carried out at 15, 25, 35 and 45 °C using a static gravimetric method. The curves obtained were adjusted to eight equations. The isosteric heat of sorption (net and total) and the thermodynamic parameters were determined based on the Clausius-Clapeyron equation and the enthalpy-entropy compensation theory was applied to adsorption isotherms. The sorption isotherms obtained were of type III of Brunauer classification. The Peleg model best described the experimental data. In all cases, the isosteric heat decreased while the moisture content increased. The value of isokinetic temperature (T) was found to be less than harmonic mean temperature (T), the sorption of water in dry chemical silage is therefore controlled by entropic mechanisms and proceeds spontaneously.
测定了在直接被动式太阳能干燥器中获得的红罗非鱼内脏（特定种类）干化青贮的吸附等温线、热力学性质以及用于证实等动力学理论的计算。使用静态重量法在15、25、35和45℃下进行吸附等温线实验。将获得的曲线拟合到八个方程。基于克劳修斯 - 克拉佩龙方程确定吸附等量热（净热和总热）和热力学参数，并将焓 - 熵补偿理论应用于吸附等温线。所获得的吸附等温线属于布鲁诺尔分类的III型。佩莱格模型最能描述实验数据。在所有情况下，等量热随水分含量增加而降低。发现等动力学温度（T）值小于调和平均温度（T），因此干化青贮中水分的吸附受熵机制控制且自发进行。
