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Load:
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1. komponenta
| Lecture type | Total |
| Lectures |
30 |
| Laboratory exercises |
15 |
* Load is given in academic hour (1 academic hour = 45 minutes)
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Description:
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PURPOSE:
The objective of this course is to provide fundamentals of electrochemical kinetic and mass transport in electrochemical processes as well as to apply student´s prior knowledge to new topics and to issues concerning electrochemical reactors and electrochemical processes. The aim of this course is also to give introduction about most important electrochemical industrial processes and products.
THE CONTENTS OF THE COURSE:
Week 1
Introduction to electrochemical engineering. Equilibrium cell potential and Gibbs energy. Cell voltage. Characteristic parameters of electrochemical process.
Week 2
Mass balance of electrochemical processes. Heat balances of electrochemical processes. Joule heating. Heat balances for aluminium production process..
Week 3
Current and potential distribution
Week 4
Mass transport in electrochemical reactor (diffusion, convection, migration). Hydrodynamic boundary layer and Nernst diffusion layer. Forced and free convection in electrochemical reactor. Dimensionless numbers defining mass transport in electrochemical reactor.
Week 5
Electrochemical cell and electrode design, separators (membranes and diaphragms), electrode materials and catalysis. Process optimisation.
Week 6
Aluminium production (Hall-Heroult Process). Chlor-alkali production. Electroplating.
Week 7
Exam
Week8:
Introduction to corrosion and corrosion engineering - Corrosion Costs and purpose of the study of corrosion; corrosion process (theory of homogeneous corrosion); steady state of the corrosion process; common corrosion reactions; analogy of corrosion and galvanic cell;calculating the enthalpy change of the free corrosion reactions - EMFof the corrosion cell.
Week 9:
Kinetics of corrosion process - rate of corrosion, corrosion system out of equilibrium - polarization; theory of mixed potentials (kinetics of uniform corrosion), polarization resistance, Wagner Traudi equation;
Week 10:
Thermodynamics of corrosion process Nernst equation and Pourbaixovi diagrams, corrosion potential, measuring the potential of corrosion systems;
Week 11:
Localized corrosion - causes of localized corrosion; galvanic corrosion; potential and current distribution in a galvanic cell; corrosion due to the formation of the concentration cell; corrosion in crevices; pitting corrosion; stress corrosion cracking; corrosion fatigue; hydrogen induced cracking and other forms of corrosive damage caused by hydrogen; intergranular corrosion; selective dissolution; erosion corrosion; other types of corrosion in conjunction with mechanical action of the environment: cavitation, fretting corrosion and wear corrosion.
Week 12: Corrosion protection techniques - protection against corrosion by selection of corrosion resistant materials
Week 13: Corrosion protection techniques - electrochemical techniques for corrosion protection
Week 14: Corrosion protection techniques - protection by inhibitors, inorganic and organic.
Week 15: Exam
Laboratory exercises
1. Diffusion polarisation.
2. Current and potential distribution
2. Zinc electroplating
3. Electrolytic silver refining
2. Fuel cell
Learning outcomes
1. Evaluate critically the problems that may occur when conducting electrochemical processes
2. Argue the basic electrochemical processes that are conducted in practice
3. Compute the parameters for the proposed sample process
4. Choose the appropriate electrochemical reactor and the necessary equipment to carry out the electrolysis process
5. To use electrochemical equipment
6. Predict energy consumption in the electrolysis process
Learning outcomes of the graduate study of Chemical Engineering at the programme level:
1. evaluate data critically in order to draw conclusions
2. evaluate the application of new and emerging technologies
3. classify knowledge from various fields methodically in order to draw systematic conclusions
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Learning outcomes:
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- Evaluate critically the problems that may occur when conducting electrochemical processes
- Argue the basic electrochemical processes that are conducted in practice
- Compute the parameters for the proposed sample process
- Choose the appropriate electrochemical reactor and the necessary equipment to carry out the electrolysis process
- To use electrochemical equipment
- Predict energy consumption in the electrolysis process
- evaluate data critically in order to draw conclusions
- evaluate the application of new and emerging technologies
- classify knowledge from various fields methodically in order to draw systematic conclusions
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Literature:
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materijali s predavanja, interni pisani materijali : https://moodle.srce.hr/2020-2021/course/view.php?id=77790, 1. Za elektrokemijsko inženjerstvo materijali s predavanja, interni pisani materijali, M. Kraljić Roković,
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Electrochemical Engineering: Science and Technology in Chemical and Other Industries, H. Wendt, G. Kreysa, Springer, 1999.
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Industrial Electrochemistry (odabrani djelovi), D. Pletcher, F. C. Walsch, Chapman and Hall, 1990.
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Pristupačnost
