diplomsko delo
Mojca Konda (Author), Vesna Ferk Savec (Mentor)

Abstract

V skladu z izsledki sodobnih raziskav je uporaba fosilnih goriv prepoznana kot glavni razlog za vse večje koncentracije toplogrednih plinov, predvsem ogljikovega dioksida. To se v okolju kaže z ekstremnimi vremenskimi spremembami, s smogom, poplavami, sušami, z učinkom tople grede ipd. Znanstveniki predvidevajo, da bo zalog nafte in zemeljskega plina zmanjkalo čez približno petdeset let. Manjšanje zalog fosilnih goriv pa prinaša višje cene goriv za prevozna sredstva. Alternativna goriva bodo v prihodnosti počasi nadomestila fosilna goriva. Zato se povečuje proizvodnja biodizla, ki ga v mešanici s fosilnim dizlom uporabljajo v nepredelanih dizelskih motorjih. Biodizel je biorazgradljiva, ekološka, obnovljiva in netoksična mešanica alkilnih estrov maščobnih kislin, s podobnimi fizikalnimi in kemijskimi lastnostmi kot fosilni dizel. V diplomskem delu je predstavljeno vključevanje goriv prihodnosti v pouk kemije. Analiza izbranih tujih in domačih delovnih zvezkov, učbenikov in priročnikov za pouk kemije nakazuje, da se o biodizlu kot gorivu prihodnosti v osnovni šoli premalo govori. Kljub ozaveščanju učencev o okoljskih težavah, povezanih z uporabo fosilnih goriv, je pojem biodizel možno zaslediti le v enem slovenskem učbeniku za kemijo, eksperimentalnega dela na to temo pa sploh ne. V diplomskem delu je bil preverjen in optimiziran izbrani postopek priprave biodizla, primeren za izvedbo v osnovni šoli. Izdelana je bila učna enota na podlagi operativnih učnih ciljev učnega načrta za kemijo v osnovni šoli s pripadajočimi navodili za učitelja in z delovnim listom za učenca.

Keywords

biodizel;alternativna goriva;ekološki problemi;sinteza biodizla;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL PEF - Faculty of Education
Publisher: [M. Konda]
UDC: 62-611:373.3(043.2)
COBISS: 10716233 Link will open in a new window
Views: 989
Downloads: 239
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Other data

Secondary language: English
Secondary title: Introduction of »fuels of the future« in teaching chemistry
Secondary abstract: In accordance with modern researches, the usage of fossil fuels is the main cause of increased concentration of greenhouse gases, especially carbon dioxide. This is indicated by extreme weather changes, smog, floods, droughts, the green house effect etc. Scientists assume that the supplies of fossil fuel will run out in about 50 years. The decrease of fossil fuel supplies is increasing the price of vehicle fuels. Fossil fuels will be replaced with alternative fuels in the future. Therefore, the production of biodiesel, which is used in unmodified diesel engines in a fossil diesel blend, is increasing. Biodiesel is a biodegradable, ecological, renewable and non-toxic mixture of acyl esters with chemical and physical properties similar to fossil diesel. This paper is written about introduction of fuels of the future in chemistry teaching. Analysis of different Slovenian and English textbooks, workbooks and school books have shown, that there is little talk about biodiesel in primary schools. Although the students are aware of environmental problems and the usage of fossil fuels, the notion biodiesel can be found just in one Slovenian textbook. No experimental work associated with biodiesel synthesis can be found either. A procedure of biodiesel synthesis suitable for primary schools has been tested and optimised in this paper. Based on the operational didactic goals of the chemistry curriculum for primary schools, the experiment has been made into a teaching unit that includes worksheets for students and instructions for the teacher.
Secondary keywords: chemistry;primary education;kemija;osnovnošolski pouk;
File type: application/pdf
Type (COBISS): Bachelor thesis/paper
Thesis comment: Univ. Ljubljana, Pedagoška fak., Dvopredmetni učitelj: Kemija - Gospodinjstvo
Pages: III, 27 str., [20] str. pril.
ID: 9055563