Digitala Vetenskapliga Arkivet

Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Production of biodiesel from corn oil and ethanol by homogeneous alkali catalyzed transesterification
KTH, Skolan för kemivetenskap (CHE).
2011 (engelsk)Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgaveAlternativ tittel
Tillverkning av biodiesel frånj majsolja och etanol genom homogen baskatalyserad transesterifiering (svensk)
Abstract [en]

This report gives a general overview on biodiesel production, its motivations, characteristics and recent developments, mainly focused in the Brazilian case.

The Brazilian National Program for Production and Use of Biodiesel (PNPB) launched 2003 created a demand of biodiesel and stimulated the biodiesel production. Biodiesel is being produced from soybean oil, followed by animal fats and cottonseed oil, with palm and castor bean oil contributing in small portions. The biodiesel expansion has impacts on environmental and social issues such as deforestation from soya expansion and a decrease of employment levels due to the high degree of mechanization of the soya harvest.

Experimental work was developed, using corn oil, ethanol and NaOH as a catalyst. Experiments were made varying significant parameters to find the optimum reaction temperature, reaction time, catalyst amount and molar ratio between ethanol and corn oil. Besides that, another experiment aimed to describe the yield behavior as a function of the reaction time.

The produced biodiesel has been characterized by measurements of density, refraction index and viscosity.

The amount of 0.4 wt % NaOH, based on the weight of raw oil, was enough to catalyze the reaction of transesterification effectively. A higher amount of alcohol in excess provides a higher yield at mild temperature conditions. But the higher amount of alcohol used, the higher the amount of alcohol in excess presented in the biodiesel phase which has to be eliminated. An increase of the temperature from 40˚C to 50˚C  does not increase the yield in a considerable way. Thus due to the energy saving it is not recommended to increase the temperature to 50˚C. Regarding the evaluation of the conversion as function of time, a high conversion is obtained after 90 min. An extension of the reaction time from 90 to 150min had no significant effect.

 

sted, utgiver, år, opplag, sider
2011. , s. 42
Emneord [en]
Biodiesel, Corn oil, Ethanol, Homogen catalys, Transesterification
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-33264OAI: oai:DiVA.org:kth-33264DiVA, id: diva2:414004
Fag / kurs
Chemical Engineering
Uppsök
Physics, Chemistry, Mathematics
Veileder
Examiner
Tilgjengelig fra: 2011-05-02 Laget: 2011-05-02 Sist oppdatert: 2022-06-24

Open Access i DiVA

fulltekst(881 kB)13520 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 881 kBChecksum SHA-512
55b3176540f3fcc04efdc6ca53a697a27f28d4d70f0dc6dcf9ba73caf2fd655bd1612b5965900e252afc9772cccd40d9e89a6bc18a15fd5ad4254e0fda3ff347
Type fulltextMimetype application/pdf

Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 13559 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

urn-nbn

Altmetric

urn-nbn
Totalt: 832 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf