Seagas: Evaluating the Biodiesel Potential of Local Seaweed Species Kappaphycus alvarezii and Eucheuma sp
Seagas: Evaluating the Biodiesel Potential of Local Seaweed Species Kappaphycus Alvarezii and Eucheuma sp.
Ylaiza Fayne C. Delos Reyes, Cleford Jay D. Bacan, Kerby Boy Sultan, Trixie Mia P. Rebuta, Aaliyah Martine J. Estember, Allyza Pearl Baroy, Queen Margarette Ayaron, Eshymyl Frya Retes, Gee William G. Apura
Cor Jesu College Inc., Philippines
Publication Information
Journal Title: International Journal of Research and Scientific Innovation (IJRSI)
Author(s): Reyes, Ylaiza Fayne C. Delos ; Bacan,Cleford Jay D. ;Sultan, Kerby Boy ; Rebuta,Trixie Mia P. ;Estember, Aaliyah Martine J. ; Baroy,Allyza Pearl ; Ayaron,Queen Margarette ; Retes, Eshymyl Frya ;Apura, Gee William G.
Published On: 12/30/2025
Volume: 12
Issue: 04
First Page: 320
Last Page: 341
ISSN: 2321-2705
- Cite this Article Reyes, Ylaiza Fayne C. Delos ; Bacan,Cleford Jay D. ;Sultan, Kerby Boy ; Rebuta,Trixie Mia P. ;Estember, Aaliyah Martine J. ; Baroy,Allyza Pearl ; Ayaron,Queen Margarette ; Retes, Eshymyl Frya ;Apura, Gee William G. ; Seagas: Evaluating the Biodiesel Potential of Local Seaweed Species Kappaphycus alvarezii and Eucheuma sp, Volume 12 Issue 4, International Journal of Research and Scientific Innovation (IJRSI),320-341, Published on 12/30/2025, Available at https://rsisinternational.org/journals/ijrsi/articles/seagas-evaluating-the-biodiesel-potential-of-local-seaweed-species-kappaphycus-alvarezii-and-eucheuma-sp/
Abstract
The study evaluated the biodiesel quality of two local seaweed species, Kappaphycus alvarezii and Eucheuma sp., in terms of density, viscosity, flash point, and combustion efficiency. Biodiesel samples were produced and tested under an alternative laboratory setup, with measurements taken across three replicates. K. alvarezii biodiesel exhibited a density of 0.88 g/cm³, viscosity of 4.80 cSt, flash point of 131°C, and combustion efficiency of 98.40%, while Eucheuma sp. biodiesel showed a density of 0.88 g/cm³, viscosity of 5.02 cSt, flash point of 0.88°C, and combustion efficiency of 98.00%. Comparisons with commercial diesel, which had a density of 0.85 g/cm³, viscosity of 3.50 cSt, flash point of 60°C, and combustion efficiency of 99.00%, revealed statistically significant differences in all parameters (p<0.05). The results indicate that both seaweed-derived biodiesels possess higher viscosity and flash points than commercial diesel, suggesting their potential suitability for biodiesel applications. However, combustion efficiency was slightly lower than that of commercial diesel. Overall, K. alvarezii and Eucheuma sp. Show promise as alternative biodiesel sources, meeting key biodiesel quality parameters.
Keywords:
biodiesel, Kappaphycus alvarezii, Eucheuma sp., density, viscosity, flash point, combustion efficiency, alternative biodiesel, renewable energy
