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All Journal Kappa Journal Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram
Dian Wijaya Kurniawidi
University of Mataram
Astronomy Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Mathematics Physics Other

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Efektivitas Jumlah Lubang Pada Tabung Pembakaran Terhadap Performa Kompor Biomassa Susi Rahayu; Habib Ridwansyah; Dian Wijaya Kurniawidi; I G N Yudi Handayana; Siti Alaa`; Arif Budianto
Kappa Journal Vol 8 No 1 (2024): Kappa Journal
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i1.25335

Abstract

Global energy requirements encourage innovations in developing environmentally friendly alternative energy sources by transforming biomass waste into biopellets. The use of biopellets as fuel was followed by the development of biomass stoves for households. Developing biomass stove technology design is essential, so this research aims to design a biomass stove with good performance for use as a household stove. Stove performance was identified by reviewing the biomass stove's fuel consumption and thermal efficiency relative to the number of combustion holes. The biomass stove fabrication results had been successfully created based on a stove design using galvanized plate material. The design focused on three layers of tubes, including the stove frame, the air supply control, and the combustion tube. The number of holes in the combustion tube affected fuel consumption and the thermal effectiveness of the stove. The lowest fuel consumption on a furnace with six combustion holes was 2,306 kg/hour. Meanwhile, the optimal thermal efficiency for burning 18 holes was 16.17%. However, this thermal efficiency value needs to meet the SNI 7926: 2013 standard. The location and number of combustion holes in the combustion tube could influence the performance of the biomass stove. Therefore, it is important to modify biomass stoves to fulfill SNI standards.
A Correlation Between Exposure to PM1 from Firewood Burnings in Lombok Island and Erythrocyte Deformations Kasnawi Al Hadi; Arif Budianto; Alfina Taurida Alaydrus; Dian Wijaya Kurniawidi; Palaivia Harman Wardi
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol. 14 No. 4: October 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-ps.v14i4.16656

Abstract

Lombok Island is facing a big issue of emissions. These emissions are easily found in firewood burning in home industry, household, and many others. The emission can be found as PM (particulate matter), while a long-term exposure to PM has a potential to disturb respiratory system. This study aims to investigate the correlation between exposure to firewood burning emission (PM~1~) and erythrocyte deformation levels. Three different firewood samples (pine, teak, and mixed firewood) were used as biomass-burning sources, with each sample burned at three different combustion speeds (fast: 1.8 m/s, medium: 1.2 m/s, and slow: 0.6 m/s). The samples were burnt inside a furnace, while the resulting PM~1~ emissions were exposed to the mice (n=10 per subgroup) as the experimental animal for ten consecutive days (100 s exposure per day). All mice were sacrificed on day 11 to investigate the deformation level under a digital microscope. The results show that firewood burnings generate varied PM~1~ concentrations. The PM~1~ concentrations ranged from 97×10³ to 257×10³ µg/m³ (0.97–2.57 g/m³ in the exposure chamber), depending on the firewood sample. Mixed firewood samples have the highest PM~1~ concentration and erythrocyte deformation level, while teakwood has the smallest values. Linear regression analysis revealed a strong correlation between PM~1~ exposure and erythrocyte deformation (β = 0.082, 95% CI: 0.064–0.100, R² = 0.81, p < 0.001). It can be concluded that a higher PM~1~ concentration generates a higher erythrocyte deformation level. A higher combustion speed generates a smaller concentration, resulting in a lower deformation level.
Co-Authors Alfina Taurida Alaydrus Arif Budianto Arif Budianto Habib Ridwansyah I G N Yudi Handayana Kasnawi Al Hadi Palaivia Harman Wardi Siti Alaa` Susi Rahayu