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Sinteza biodizla iz lipidov alg : diplomsko delo
Starešinič, Sandra (Author), Ferk Savec, Vesna (Mentor) More about this mentor... This link opens in a new window, Hrast, Špela (Co-mentor)

URLURL - Presentation file, Visit http://pefprints.pef.uni-lj.si/4159/ This link opens in a new window

Abstract
Uporaba fosilnih goriv je eden izmed glavnih razlogov za povečano koncentracijo toplogrednih plinov in ima negativen vpliv na okolje, kar se kaže na primer kot ekstremne vremenske spremembe, globalno segrevanje, smog. Polucija atmosfere predstavlja velik problem, zato je priporočljiva in vse potrebnejša uporaba goriv, ki manj onesnažujejo okolje. Uporaba alternativnih goriv, ki so obnovljiva, je priporočljiva tudi, ker se zaloge fosilnih goriv zmanjšujejo. V prihodnosti ne bo več na razpolago fosilnih goriv in tako bo edina rešitev uporaba alternativnih goriv. Eno izmed teh je biodizel. Biodizel je mešanica alkilnih estrov maščobnih kislin s podobnimi fizikalnimi in kemijskimi lastnostmi, kot jih ima fosilni dizel. Emisije toplogrednih plinov biodizla so v primerjavi s fosilnim dizelskim gorivom manjše. Kljub temu da je biodizel cenovno ugodnejši in okolju prijaznejši, so se začele pojavljati etične dileme glede njegove uporabe, saj se pogosto kot surovina za njegovo proizvodnjo uporabljajo užitna olja. Dilema se tako nanaša na možnost uporabe velikega deleža kmetijskih površin za pridelavo poljščin, namenjenih proizvodnji goriva, kar bi ogrožalo pridelavo hrane. Z namenom preseči te dileme so znanstveniki začeli proučevati možnosti uporabe lipidov iz alg kot surovine za pripravo biodizla. V diplomskem delu je obravnavana sinteza biodizla iz lipidov alg v šolskem kemijskem laboratoriju. Na podlagi operativnih učnih ciljev učnega načrta za kemijo v osnovnih šolah je bila izdelana učna enota s pripadajočimi navodili in delovnim listom za učenca. Izvedena je bila tudi analiza izbranih primerov učbenikov po osnovnošolski vertikali za vsebinsko področje goriva (biodizel).

Language:Slovenian
Keywords:alternativna goriva, biodizel, sinteza biodizla, alge, pouk kemije
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:PEF - Faculty of Education
Year:2016
Publisher:[S. Starešinič]
Number of pages:63 str.
UDC:54:373.3(043.2)
COBISS.SI-ID:11336265 This link opens in a new window
Views:697
Downloads:180
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Secondary language

Language:English
Title:Synthesis of biodiesel from algae lipids
Abstract:
The use of fossil fuels is one of the main reasons for increased concentracion of greenhouse gases and it has a negative impact on the enviroment, which is manifested for example through extreme weather, global warming, smog. The pollution of athmosphere represents a big problem, that is why it is required and advisable, to promote the use of fuels, which pollute less. The use of alternative fules, which are renewable, is advantageous beacuse reserves of fossil fuels are diminishing. In the future fossil fuels will not be available any more and the only solution is the use of alternitive fuels. One of those fuels is biodiesel. Biodiesel is a mixture of alkaline esthers of fatty acids, with similar physical and chemical properties as fossil diesel fuel. Emissones of greenhouse gases from biodiesel are lower compared to fossil diesel fuel. Dispate being cheaper and enviromantally friendlier, there is an ethical dillema to its use, beacuse raw material for its production are mainly edable oils. The dilemma is even the usage of large parts of argicultular areas fort he growing of crops intended for use in fuel production, which can jeopardize food production. With the aim of getting over this dillema, the scientist have begun to investigate the usage of lipids in algae as a raw material for the production of biodiesel. In my diploma thesis we investigated synthesis of biodiesel out of lipids of algae in school chemistry laboratory. On the basis of operative learning goals for chemistry in grade school we consturcted a learning unit with instructions and working sheet for students. Analysis of selected workbooks on grade school vertical was conducted for the content area of fuel (biodiesel).

Keywords:chemistry

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