Disperse Systems Technologies

Recommended Prerequisites

Physical Chemistry of Surfaces, Separation Process I and II, Transport Phenomena I, II and III, Chemical Thermodynamics, Mass and Energy Balances.

Teaching Methods

The student will be guided to follow an autonomous learning process. There will be expositive classes to introduce the students to the different themes in the course which the student should develop further autonomously. Following these classes there will also be lab classes. Furthermore the student will be guided to develop a synthesis work. Both lab and synthesis works will lead to writing of small reports which will be presented and discussed orally to reinforce communication skills.

- Laboratory work;

- Synthesis work;

- Oral presentation and discussion of the projects;

-Exam.

Learning Outcomes

Os processos envolvendo mais do que 1 fase sendo, uma delas, finamente dividida (fase dispersa),assumem cada vez mais importância na Engenharia Química (EQ).Estes sistemas podem ser abordados com ferramentas genéricas, à semelhança do que se verifica nos processos tradicionais da EQ

O objectivo desta disciplina é abordar os conceitos fundamentais e as ferramentas que nos permitem descrever, analisar e modelar esses sistemas e respectivos processos que surgem em áreas muito diversas

Espera-se que os estudantes consigam:

-Caracterizar fisicamente sistemas dispersos-nível laboratorial ou do processo (on-line)

- Dominar as regras básicas da formulação de produtos envolvendo pelo menos uma fase dispersa

- Perceber e controlar os mecanismos que influenciam a estabilidade dos produtos com uma fase dispersa.

- Dominar técnicas e estratégias para modelar preditivamente estes processos.

- Conhecer alguns dos processos mais importantes utilizados para a produção industrial de sistemas dispersos.

Work Placement(s)

No

Syllabus

Properties of disperse systems.

Advanced characterization techniques for disperse systems from nanometric to micrometric disperse phases. Lab techniques and on-line techniques.

Formulation rules for colloidal systems, emulsions and granules.

Stabilization mechanisms and strategies for disperse systems.

Modelling disperse systems – population balances.

Industrial processes: comminution; crystallization; emulsification; encapsulation; spray drying; granulation and prilling.

Head Lecturer(s)

Maria da Graça Bontempo Vaz Rasteiro

Assessment Methods

Assessment
Laboratory work or Field work: 20.0%
Synthesis work: 20.0%
Exam: 60.0%

Bibliography

Myers D., Surfaces, interfaces, and colloids:principles and applications, J Wiley, NY, 1999.

Morrison I.D., Sydney R., Colloidal dispersions : suspensions, emulsions, and foams, Wiley, NY, 2002.

Schramm L.L., Emulsions, Foams, and Suspensions:Fundamentals and applications, Wiley-VCH, Weinheim, 2005.

Ramkrishna D., Populations Balances: Theory and applications to particulate systems in Engineering, Academic Press, London, 2000.

Rhodes M.J., Introduction to particle technology, 2nd ed., Wiley, 2008.

Witten T., Structured fluids: polymers, colloids, surfactants, Oxford Univ. Press, Oxford, 2004.

Mullin JW, Crystallization,  Butterworth Heinemann, 2001.

J. Lister & B. Ennis, The Science & Engineering of Granulation Processes, Kluwer Ac Pub., Holanda, 2004.