Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Life cycle assessment and resource management options for bio-ethanol production from cane molasses in Indonesia
KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Energi och klimatstudier, ECS.
2013 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
Abstract [en]

The intent of this thesis is to analyse the sustainability of producing bio-ethanol from cane molasses in Indonesia and its potential to replace gasoline in the transportation sector. A field trip was conducted in East Java, Indonesia, and data was gathered for analysis. Life cycle assessment (LCA) was performed to analyse the net emissions and energy consumption in the process chain. The greenhouse gas (GHG) emissions of the life cycle are 17.45 gCO2e per MJ of ethanol produced. In comparison to gasoline, this results in a 78% reduction in GHG emissions in the complete process chain. Net Energy Value (NEV) and Net Renewable Energy Value (NREV) were 6.65 MJ/l and 24 MJ/l. Energy yield ratio (ER) was 9.43 MJ of ethanol per MJ of fossil energy consumed in the process. Economic allocation was chosen for allocating resources between sugar and molasses. Sensitivity analysis of various parameters was performed. The emissions and energy values are highly sensitive to sugarcane yield, ethanol yield and the price of molasses. Alternative management options were considered for optimizing the life cycle. Utilizing ethanol from all the mills in Indonesia has a potential to replace 2.3% of all motor gasoline imports. This translates in import savings of 2.3 trillion IDR per year. Use of anaerobic digestion or oxidation ponds for waste water treatment is unviable due to high costs and issues with gas leakage. Utilizing 15% of cane trash in the mill can enable grid independency. Environmental impacts due to land use change (Direct & Indirect) can be crucial in overall GHG calculations. Governmental regulation is necessary to remove current economic hurdles to aid a smoother transition towards bioethanol production and utilization.

Ort, förlag, år, upplaga, sidor
2013. , s. 57
Nyckelord [en]
Life cycle assessment, GHG emissions, Net energy value, Energy yield ratio, Resource allocation, Sensitivity analysis
Nationell ämneskategori
Energisystem
Identifikatorer
URN: urn:nbn:se:kth:diva-127863OAI: oai:DiVA.org:kth-127863DiVA, id: diva2:646463
Ämne / kurs
Energi och klimatstudier
Utbildningsprogram
Teknologie masterexamen - Miljövänliga energisystem
Presentation
2013-05-31, M312, Brinellvagen 68, Stockholm, 09:00 (Engelska)
Handledare
Examinatorer
Projekt
Harnessing agricultural feedstock and residues for bioethanol production - towards a sustainable biofuel strategy in IndonesiaTillgänglig från: 2013-10-02 Skapad: 2013-09-09 Senast uppdaterad: 2013-10-02Bibliografiskt granskad

Open Access i DiVA

KummamuruVenkata Bharadwaj EGI-2013-059MSC(1093 kB)1734 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 1093 kBChecksumma SHA-512
471860da3e8bd92a84dee8e48aa6dbc45d6829b82fac7369af9c4089586bba7a723272596d7f8f10b2e57507fce43fad2f5e90834b91413015c1ee02e65217d4
Typ fulltextMimetyp application/pdf

Av organisationen
Energi och klimatstudier, ECS
Energisystem

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 1734 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 653 träffar
RefereraExporteraLänk till posten
Permanent länk

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