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2 2023

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Utilizing Pyrolysis of Plastic Debris for Refuse-Derived Fuel Production and Viable Substitute to Wood Debris

Mutiara Sari Mega, Inoue Takanobu, Harryes Regil Kentaurus, Septiariva Iva Yenis, Yokota Kuriko, Notodarmodjo Suprihanto, Kato Shigeru, Al Ghifari Rizal Muhammad, Suhardono Sapta, Suryawan I. Wayan Koko, Prayogo Wisnu, Arifianingsih Nur Novilina

Ecological Engineering & Environmental Technology

2023

Vol. 24, iss. 8

133--142

This research explores the viability of converting discarded Polyethylene Terephthalate (PET) plastic waste into a valuable resource through the implementation of pyrolysis and refuse-derived fuel (RDF) technologies. The objective is to assess the potential of PET charcoal waste as an efficient source for RDF generation, surpassing the energy recovery and recycling potential of PET waste. The study introduces three RDF variants: RDF PET100, RDF PET50, and RDF PET0. RDF PET100 is comprised entirely of PET charcoal, RDF PET50 combines 50% PET charcoal with 50% wood debris, and RDF PET0 consists entirely of wood debris. Comprehensive assessments of water content, ash content, and calorific value were conducted to evaluate the quality of these RDF formulations. Results indicate that RDF PET100 exhibits a water content of 2.63%, ash content of 0.73%, and calorific value of 5,976 MJ/kg. Similarly, RDF PET50 showcases a water content of 3.6%, ash content of 1.05%, and calorific value of 5,587 MJ/kg. RDF PET0 presents a water content of 7.51%, ash content of 1.36%, and calorific value of 4,198 MJ/kg. The outcomes underline the potential of PET plastic waste repurposing through RDF and pyrolysis techniques. Particularly, RDF PET100 emerges as a high-caliber fuel option characterized by its minimal water and ash content, coupled with a substantial calorific value. This innovation holds promise in mitigating plastic waste challenges, particularly pertinent in the context of Indonesia.

Unlocking the Energy Potential of Temple Waste and Coconut Fiber through Refuse-Derived Fuel Production toward Sustainable Energy

Wijaya I. Made Wahyu, Wiratama I. Gusti Ngurah Made, Putra I. Kadek Ardi, Atmaja Ni Putu Cempaka Dharmadewi

Ecological Engineering & Environmental Technology

2023

Vol. 24, iss. 7

19--29

Organic temple waste has the potential to be used as biomass-based fuel, with a 90% composition of biodegradable waste consisting of leaves, flowers, fruit, and food scraps. To minimize environmental impact, proper management efforts are necessary to handle the temple waste and produce a valuable product. An alternative method for dealing with organic waste includes producing fuel from biomass which is refuse-derived fuel (RDF). This would not only create a new product for waste wages but also prevent them from ending up as waste in the landfill. The current research aimed to investigate the characteristics of organic temple waste and coconut fiber as RDF material and its potential to replace coal use. The RDF was produced from temple waste using leaf and flower components combined with coconut fiber as the primary ingredients. The material was dried, ground, and produced into powder form before it was analyzed in terms of its characteristics. RDF made from temple waste has best result among coconut fibre and the both mixture with above 4800 kcal/kg. It belongs to class 2 solid fuels based on their characteristics, according to the National Standard for biomass-based fuel. Furthermore, the RDF still needs to be improved for industrial scale and requirement. Product durability test has shown good result for the temple waste material comparing with coconut fibre and coal. The study showed that temple waste and coconut fibre are promising to be processed into RDF as coal substitution in the combustion process.