The Role of Calotropis gigantea Leaves as a Natural Binder in Corncob Briquettes Enhanced with LDPE

Zeni Ulma; Maliya Syabriyana; Livia Ayu Ardilasari

Authors

Zeni Ulma Politeknik Negeri Jember Author
Maliya Syabriyana Universitas Serambi Mekkah Author
Livia Ayu Ardilasari Politeknik Negeri Jember Author

Keywords:

Calotropis gigantea leaves, biomass briquette, corncob, LDPE plastic, renewable energy

Abstract

Briquetting represents one of the key technological pathways for biomass utilization, particularly when combined with plastic waste that is otherwise difficult to manage. This study aims to analyze the effect of Calotropis gigantea (Biduri leaves) as a natural binder on the characteristics of briquettes made from corncob charcoal and low-density polyethylene (LDPE) plastic waste. Corncobs were carbonized at 300-400 °C for approximately 4 hours, and briquettes were formulated with a constant corncob-to-LDPE ratio of 70:30. Five binder compositions (15%, 20%, 25%, 30%, and 35% of total briquette mass) were tested to determine the optimal formulation. Physical and chemical properties including moisture content, ash content, volatile matter, fixed carbon, calorific value, density, and bulk density, were analyzed. The results demonstrated that the 15% binder composition (V1) achieved the best performance, meeting SNI requirements with a moisture content of 2.947%, ash content of 6.790%, volatile matter of 3.536%, fixed carbon of 86.727%, calorific value of 7216.649 cal/g, density of 0.932 g/cm³, and bulk density of 0.326 g/cm³. This research highlights the novelty of employing Calotropis gigantea leaves as a sustainable binder in LDPE-modified biomass briquettes. The findings confirm that natural binders can enhance briquette quality while reducing reliance on synthetic adhesives, offering a viable pathway toward environmentally friendly household energy solutions.

References

[1] R. Syarief and A. Irawati, Pengetahuan bahan untuk industri pertanian. PT. Mediyatama Sarana Perkasa, Jakarta, 1988.

[2] S. M. Ridjayanti, R. A. Bazenet, W. Hidayat, I. S. Banuwa, and M. Riniarti, “Pengaruh variasi kadar perekat tapioka terhadap karakteristik briket arang limbah kayu sengon (Falcataria moluccana),” Perennial, vol. 17, no. 1, pp. 5–11, 2021.

[3] Lubis, Mirna Rahmah, et al. "Utilization of Brown Coal with Ceara Rubber (Manihot Glaziovii) Binder for Biobriquettes." Philipp. J. Sci 152 (2023): 1885-1894.

[4] M. R. Aziz, A. L. Siregar, A. B. Rantawi, and I. B. Rahardja, “Pengaruh Jenis Perekat Pada Briket Cangkang Kelapa Sawit Terhadap Waktu Bakar,” Pros. Semnastek, 2019.

[5] A. Syarief, A. Nugraha, and M. N. Ramadhan, “Pengaruh Variasi Komposisi dan Jenis Perekat terhadap Sifat Fisik dan Karakteristik Pembakaran Briket Limbah Arang Kayu Alaban (Vitex pubescens Vahl)-Sekam Padi (Oryza sativa L.),” in Prosiding Seminar Nasional Lingkungan Lahan Basah, 2021.

[6] Y. Sanchez-Roque, H. J. Orantes-Flores, P. López-de-Paz, Y. C. Pérez-Luna, M. A. Canseco-Pérez, and A. G. Zenteno-Carballo, “Biomass briquettes: Raw material, technologies and densification parameters, quality and future challenges,” Sci. Agropecu., vol. 16, no. 2, pp. 293–306, 2025.

[7] L. van der Westhuizen, D. C. S. Rorke, and J. F. Görgens, “Exploring the Impact of Steam Explosion Pretreatment on the Binding Characteristics of Coal-Biomass Briquettes: A Study on Lignocellulose Type and Fibre Morphology,” Waste and Biomass Valorization, vol. 16, no. 1, pp. 281–297, 2025.

[8] V. Ramdas, S. G. Njokweni, P. Letsoalo, S. Motaung, and S. O. Ramchuran, “Bio-Coal Briquetting as a Potential Sustainable Valorization Strategy for Fine Coal: A South African Perspective in a Global Context,” Energies, vol. 18, no. 14, p. 3746, 2025.

[9] B. Emadi, K. L. Iroba, and L. G. Tabil, “Effect of polymer plastic binder on mechanical, storage and combustion characteristics of torrefied and pelletized herbaceous biomass,” Appl. Energy, vol. 198, pp. 312–319, 2017.

[10] W. Budhijanto, T. Ariyanto, and R. B. Cahyono, “Bioenergy potential from agricultural residues and industrial wastes in Indonesia,” J. Smart Process., vol. 8, no. 6, pp. 253–259, 2019.

[11] P. A. Kabok, D. M. Nyaanga, J. M. Mbugua, and R. Eppinga, “Effect of shapes, binders and densities of faecal matter-sawdust briquettes on ignition and burning times,” J. Pet. Environ. Biotechnol., vol. 9, no. 2, pp. 1–5, 2018.

[12] F. Rachmadani, A. E. Afiuddin, and A. V. Sophia, “Analisis Nilai Kalor Biopelet dari Limbah Tongkol Jagung dan Plastik LDPE,” in Conference Proceeding on Waste Treatment Technology, 2022.

[13] Y. K. Dalimunthe and I. D. Aditya, “Mechanical Properties, Calorific Value, Proximate, and Thermal Analysis of Briquettes Made from Palm Oil Shell and LDPE with Varying Amounts of Adhesive,” Philippine Journal of Science, vol. 153, no. October, pp. 1739–1749, 2024.

[14] R. Afandi, F. H. Hamzah, and E. Rossi, “Karakteristik Briket Ampas Tebu dan Tongkol Jagung dengan Perekat Tepung Sagu,” J. Online Mhs. Bid. Pertan., vol. 5, pp. 1–14, 2018.

[15] N. Handra, A. Indra, Nurzal, A. Subardi, and E. Safri, “The impact of compaction pressure on molds in produce empty fruit bunch fiber briquettes on calorific value,” in AIP Conference Proceedings, AIP Publishing LLC, 2025, p. 30019.

[16] D. E. Rahmanto, E. H. Fitroni, and B. Rudiyanto, “Pemanfaatan Daun Biduri (Calotropis Gigantea) Sebagai Perekat Pada Pembuatan Briket Serbuk Gergaji Kayu Bayur (Pterospermum Javanicum),” Rona Tek. Pertan., vol. 13, no. 1, pp. 24–39, 2020.

[17] M. Y. P. Setyono and Y. S. Purnomo, “Analisis Kadar Air dan Kadar Abu Briket Lumpur IPAL dan Fly Ash dengan Penambahan Serbuk Gergaji Kayu,” Insologi J. Sains dan Teknol., vol. 1, no. 6, pp. 696–703, 2022.

[18] R. K. Dewi, A. Kelwin, N. Wisnu, and I. F. Nata, “Quality of Briquettes from a Combination of Pakcoy Green Mustard Greens (Brassica Juncea L) and Sugarcane Bagasse as a Renewable Energy Source,” Bul. Profesi Ins., vol. 7, no. 2, pp. 89–93, 2024.