Meet the editor

Israel Pala-Rosas is a biochemical engineer at the Instituto Tecnológico de Tehuacán (Tehuacán, México), with a Master in chemical engineering from the Benemérita Universidad Autónoma de Puebla (Puebla, México) and a PhD in sciences in chemical engineering from the School of Chemical Engineering and Extractive Industries of the Instituto Politécnico Nacional (México). His interest is the research and development of

catalytic and biotechnological processes for the transformation of biomass-derived molecules to compounds of technological and industrial interest. With this aim, Israel Pala-Rosas focuses his work on the synthesis, characterization, and testing of catalysts, as well as the design and analysis of chemical and biochemical reactors. Areas related to the catalytic processes, such as chemical thermodynamics, unit operations and economics, are also under his scope.

Contents

**Section 1**

**Section 2**

of Solar Technologies

*and Gerardo A. Mejia Pérez*

on Concurrent-Flow Dryer

*by Le Anh Duc and Keum Dong Hyuk*

Refined Salt Fluidized Bed Drying *by Bui Trung Thanh and Le Anh Duc*

**Preface XI**

Solar Drying **1**

**Chapter 1 3**

**Chapter 2 19**

Convective Drying **39**

**Chapter 3 41**

**Chapter 4 63**

**Chapter 5 85**

Kinetics of Drying Medicinal Plants by Hybridization

*by Margarita Castillo Téllez, Beatriz Castillo Téllez, José Andrés Alanís Navarro, Juan Carlos Ovando Sierra* 

Postharvest Treatment of Tropical Fruits Pineapple

Convective Drying in the Multistage Shelf Dryers: Theoretical Bases and Practical Implementation

*Mykola Yukhymenko, Jozef Bocko and Jan Krmela*

*by Artem Artyukhov, Nadiia Artyukhova, Ruslan Ostroha,* 

Mathematical Modeling and Simulation of Rapeseed Drying

Determination on Fluidization Velocity Types of the Continuous

*and Carlos Eduardo Anchundia Betancourt*

(*Ananas comosus*), Mamey (*Mammea americana*), and Banana (*Musa paradisiaca*) by Means of a Solar Dryer Designed *by Italo Pedro Bello Moreira, Edgar Ruperto Macías Ganchozo, Xavier Enrique Anchundia Muentes, Celio Danilo Bravo Moreira, Manuel Eduardo Anchundia Muentes, Hebert Edison Vera Delgado* 

## Contents



Preface

The transformation of a raw material in to a commodity or specialty product implies a series of steps in which the feedstock is subjected to physical and chemical changes. The stages in which only physical changes occur are known as unit operations, and may involve heat, mass, or both transport processes, as well as the presence of

Drying operations have been widely employed in the industry to eliminate water from the process materials. Additionally, it also refers to the elimination of organic solvents and liquids from solids. It allows for the pretreatment of feedstocks with different moisture content, such as wet solids, gels, suspensions, and solutions, for their physical or chemical transformation. Drying processing also enables the post-treatment of products for their final presentation and packaging. In some industries, such as alimentary and pharmaceutical, drying is used as a preservation

method of products since the enzymatic and microbial activity that causes undesirable chemical changes in organic matter is reduced with the decrease of

From a process approach, the development of drying equipment requires the understanding and mathematical interpretation of the heat and mass transport phenomena for their proper design, construction, and operation, as well as an

Under this scenario, *Current Drying Processes* presents recent advances in the development of drying operations for organic and inorganic materials dealing with the theoretical and experimental aspects of the most widely used technologies today, namely solar, convective, fluidized, and ultrasonic drying. The chapters present the elementary principles of each drying technology, such as energy transfer, hydrodynamics, and drying kinetics, as well as the importance of simulation and

statistical methods for the analysis and improvement of the processes.

**Israel Pala-Rosas**

Instituto Politécnico Nacional,

ESIQIE,

México

energy analysis that allows for the improvement of the process.

gaseous, liquid, or solid phases.

water content.
