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All Journal Eksergi: Chemical Engineering Journal Konversi Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul)
Wulandary, Indah Retno
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Production of Liquid Fuel from Motorcycle Used Tire via Pyrolysis: Effect of Temperature on Yield and Calorific Value Wulandary, Indah Retno; Octavia, Yona
Eksergi Vol 22 No 3 (2025)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i3.14918

Abstract

The continuous accumulation of used tires has raised serious environmental concerns due to their non-biodegradable nature. Pyrolysis offers a promising thermal conversion method to transform used tires into alternative energy sources. This study investigates the pyrolysis of used motorcycle tires, cut into 1 x 1 cm pieces, under atmospheric pressure at various temperatures ranging from 400°C to 750°C, using 500 grams of tire material for each run. The tar and char yields were collected, and the calorific values of the liquid product were analyzed. The optimum operating condition was found at 700°C, yielding 276.56 g of tar and 184.55 g of char after 2 hours and 35 minutes of reaction. The highest calorific value obtained was 39.98 MJ/kg. Although the liquid fuel produced exhibits significant energy content, its calorific value remains lower than that of conventional fuels used in vehicles. This indicates the potential of tire-derived oil as a supplementary fuel, with further improvement needed in quality and performance.
Valorization of cassava peel starch into functional liquid glucose via acid-catalyzed hydrolysis using sulfonated carbon catalyst and red ginger (Zingiber officinale var. rubrum) extract Wulandary, Indah Retno; Laila, Noor; Dewi, Yuniza Shentiya; Ma'rifah, Yulia Nurul; Nata, Iryanti Fatyasari; Hadtimin, Ahmad Farhan
Konversi Vol 14, No 2 (2025): OCTOBER 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v14i2.24329

Abstract

The growing gap between sugar consumption and domestic product in Indonesia Highlights the need for alternative sweeteners derived from renewable resources. This study investigates the synthesis of functional liquid glucose from cassava peel starch through hydrolysis catalyzed by sulfonated carbon derived from palm empty fruit bunches (TKS-SO3H) and the enhancement of its antioxidant properties by red ginger extract. The TKS-SO3H catalyst was prepared via carbonization at 350 C followed by sulfonation at 180 C, yielding an H+ ion concentration of 1.745 mmol/g. Hydrolysis was conducted at 100 C for 60 minutes with a catalyst loading of 5% (b/v) and starch concentration ranging from 2.5 to 7.5%. The optimum glucose concentration of 4.14 mg/mL was achieved at 5% starch concentration, demonstrating the effective catalytic performance of TKS-SO3H. subsequently, liquid glucose was combined with red ginger extract in various volume ratios (1:1-1:4 v/v) to assess antioxidant capacity using the DPPH radical scavenging assay. The formulation with a 1:4 glucose-to-ginger ratio exhibited the highest scavenging activity of 48.63% after 10 minutes, indicating a significant enhancement of functional properties. The findings suggest that cassava peel, an agricultural by-product, can be utilized as a sustainable feedstock to produce bifunctional liquid glucose using an environmentally benign heterogeneous catalyst, contributing to the development of value-added and health-oriented sweeteners.
Pengaruh Karakteristik Usia dan Gender Santri di Ma’had Bakkah Martapura terhadap Kesadaran Pemilahan Sampah Organik dan Anorganik Wijayanti, Hesti; Mardina, Primata; Juwita, Rinna; Ni'mah, Lailan; Jefriadi, Jefriadi; Nurandini, Desi; Wulandary, Indah Retno; Ma'rifah, Yulia Nurul
Jurnal Pengabdian ILUNG (Inovasi Lahan Basah Unggul) Vol 5, No 3 (2026)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/ilung.v5i3.16700

Abstract

Children's awareness of disposing of waste in designated bins is a crucial factor in environmental health education, fostering a clean and healthy environment. A lack of understanding among children regarding waste management can be addressed through educational approaches that provide knowledge about organic and inorganic waste types. These efforts should begin early, during the formative "golden age" of behavioral development, as habits formed at this stage are easier to establish and yield more visible results in later life. Developing waste management behaviors at an early age can start with cultivating the habit of sorting and disposing of waste properly, which is expected to become a lifelong practice.The target group for this community service activity consisted of first, second, and third-grade students of SDITQ Ma’had Bakkah, Martapura. The objective of this community service initiative was to educate students who still disposed of waste carelessly, raise awareness about the importance of separating organic and inorganic waste, and implement waste sorting practices within the Ma’had Bakkah environment. The outcomes of this initiative included students gaining an understanding of the importance of maintaining cleanliness both at school and beyond, as well as learning to manage and sort organic and inorganic waste. Furthermore, the activity successfully fostered behavioral changes among the community, encouraging greater awareness and commitment to waste management and sorting within the school environment. Keywords: awareness; organic waste; inorganic waste; students (santri); Ma’had Bakkah 
Co-Authors Dewi, Yuniza Shentiya Hadtimin, Ahmad Farhan Hesti Wijayanti Iryanti Fatyasari Nata, Iryanti Fatyasari Jefriadi, Jefriadi Laila, Noor Ma'rifah, Yulia Nurul Ni'mah, Lailan Nurandini, Desi Primata Mardina Rinna Juwita