UNIT OPERATIONS IV: MASS TRANSFER

We learned that heat is transferred if there is a temperature difference in a medium. Similarly, if there is a difference in the concentration of any chemical species in a mixture, mass transfer must occur. Mass transfer is mass in transit as a result of a difference in concentrations of a species in a mixture.[…]

UNIT OPERATIONS II: MECHANICAL OPERATIONS

In chemical engineering and its related fields, a unit operation is a basic step in a process. For this reason they can be classified in different ways. The first category assigned to UOs is mechanical operations. What they are, what their roles are, and what contexts they fall into, you will know in this episode.[…]

UNIT OPERATIONS III: HEAT TRANSFER

Heat transfer (or heat) is energy in transit due to a temperature difference. Whenever a temperature difference exists in a medium or between media, heat transfer will occur. This is the case in the unitary operations of this classification in the industries as a whole. Shall we delve into them? The study of unitary operations[…]

UNIT OPERATIONS I: INTRODUCTION TO UNIT OPERATIONS

In an industry, starting from the raw material until reaching the final product, a series of processes must occur, some of them chemical and others of a physical nature. Thus each of the sequential steps in an industrial production line is known as a “unit operation”. In this episode, we will learn a little more[…]

COSMETICS IV: THE TECHNOLOGY OF COSMETICS

Technological cosmetics, with unique and tailor-made formulas, have become the main focus in the industries of this branch. The pursuit of beauty and youth generates ever greater demands! Therefore, it is necessary for industries to invest in means to please their customers. And in this, technology has been helping in this process, bringing very positive[…]

THERMODYNAMICS I: EVERYWHERE

Before we understand how thermodynamics affects industrial processes and how their understanding is fundamental in process design, let’s look at some basic day-to-day phenomena in which thermodynamics is present and often goes unnoticed. That Thermodynamics is everywhere, that every Chemical Engineer already knows, even those who suffer from the matter in college. Thermodynamics is a[…]

PROCESSES CONTROL IN THE CHEMICAL INDUSTRY

Until the 1940s of the last century, manual operation required a very large number of operators. Large tanks were also employed among various units in the plant, to cushion disturbances. The digitalization of control occurred in the 1970s with the advent of digital computers. Currently, operators, controllers, indicators, registers and alarms are in the control[…]

THE IMPORTANCE OF INDUSTRIAL CLEANING

Industrial cleaning is essential for the environment and for the comfort of the people who are there, because health is directly related to the quality of the hygiene performed. In addition, compliance with this action maintains the proper functioning of the machines present in the place, avoiding their premature wear. Therefore, many companies have invested[…]

SUSTAINABILITY IN CHEMICAL ENGINEERING

It has never before been discussed so much about the environment and sustainability, serious climate change, the misuse of nonrenewable resources, among other actions that are factors of great environmental concern as currently. The Chemical Engineer can contribute significantly in this field. The social demands in relation to the engineering area are based on the[…]

MAKING ALUMINUM WITHOUT MAKING CO2

  Three industrial giants are getting together to commercialize a new process for making aluminum that generates oxygen as a by-product instead of carbon dioxide. The companies—aluminum makers Alcoa and Rio Tinto and computer icon Apple—plus the governments of Quebec and Canada will invest a combined $145 million to develop the approach and license it[…]

3D PRINTED YEAST CUBES COULD SPEED UP ALCOHOL AND DRUG PRODUCTION

By infusing a hydrogel with live yeast cells and then using the gel as ink, researchers used three-dimensional printing to make a bioreactor that can ferment sugar into ethanol continuously for days (ACS Appl. Mater. Interfaces 2018, DOI: 10.1021/acsami.8b02719). The printed material, a gel lattice the size of a sugar cube, could make it easier,[…]