It has been obtained a experimental drop in pressure as a result of making flow air through a column of spouted bed loaded with wheat grains. A built column of stainless steel is used whose traversa section in a semicircular way has 152.4 mm of diameter, it finishes in a base truncated cone whose entrance hale is other 1 semi-circulate of 12 .5 mm of diameter and it has a height of 1.30 meters. The results are obtained to standard conditions of pressure and temperature, The flows of air vary between 9.9 and 52.2 cubic meters per hour and losses of pressure are obtained between 6.4 and 14.1 KPa/m, respectively.

It has been obtained the mass and heat transfer coefficients from experimental data of the granular- cereals drying such as rice, wheat, barley and oat in a conventional spouted bed column. The range of mass air flow varies from 5.2 and 40 kg/sm2. The mass transfer coefficients varies from 0.331 and 0.789 Kg/(sm2atm), and heat transfer coefficient varies from 43.7 and 53.8 W/m2K

It has been obtained a experimental drop in pressure as a result of making flow air through a column of spouted bed loaded with wheat grains. A built column of stainless steel is used whose traversa section in a semicircular way has 152.4 mm of diameter, it finishes in a base truncated cone whose entrance hale is other 1 semi-circulate of 12 .5 mm of diameter and it has a height of 1.30 meters. The results are obtained to standard conditions of pressure and temperature, The flows of air vary between 9.9 and 52.2 cubic meters per hour and losses of pressure are obtained between 6.4 and 14.1 KPa/m, respectively.

It has been obtained the mass and heat transfer coefficients from experimental data of the granular- cereals drying such as rice, wheat, barley and oat in a conventional spouted bed column. The range of mass air flow varies from 5.2 and 40 kg/sm2. The mass transfer coefficients varies from 0.331 and 0.789 Kg/(sm2atm), and heat transfer coefficient varies from 43.7 and 53.8 W/m2K

The meat processing industry is believed to produce highly polluted wastewater. Analysis of such wastewater indicated that the waste was highly contaminated with organic compounds as indicated by DQO (mg/L), DBO (mg/L ), and TSS (mg/L ). Moreover, oil and grease concentrations reached mg/L treatment of raw wastewater using Dissolved Air Flotation (DAF) was studied. Efficiency of the DAF for the removal of DBO, DQO, and oil and grease was 80%, 75% y 95 % .The overall efficiency of the treatment units provided good quality effluent.

Los residuos líquidos producidos en un centro de beneficio o matadero son efluentes que contienen sangre, rumen, pelos, grasas, proteínas. La generación de vertidos de aguas residuales tiene una carga orgánica, DBO y de nutrientes media-alta (sangre) con un contenido importante de sólidos en suspensión (rumen), grasas y aceites, así como vertidos líquidos de la operación de escaldado y lavado de carcazas, limpieza de equipos e instalaciones. En el campo del tratamiento de aguas residuales de mataderos, la flotación por aire disuelto (DAF) se usa, entre otros, para la separación de grasas, aceites, y sangre coloidal, en los cuales el DAF ha demostrado ser el sistema de separación de fases más eficiente. Durante todas las experiencias la temperatura del agua varió entre 20 y 22 °C. El punto de muestreo fue el efluente que ingresa al DAF. Las características fueron: pH = 7,2...

In this paper we determine the profiles of temperature cycle of freeze drying of natural organic products, such as lucuma and garlic. The equipment used is a Freeze Dryer RIFICOR model LI-E300-CRT. This has a drying chamber, rectangular shelf, condenser and vacuum pump. The freezing temperature is -35 °C and the temperature of the condenser is -40 ºC, the vacuum pressure is 20 microns Hg.

In this paper we determine the profiles of temperature cycle of freeze drying of natural organic products, such as lucuma and garlic. The equipment used is a Freeze Dryer RIFICOR model LI-E300-CRT. This has a drying chamber, rectangular shelf, condenser and vacuum pump. The freezing temperature is -35 °C and the temperature of the condenser is -40 ºC, the vacuum pressure is 20 microns Hg.