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Abdul Azis
Universitas Teknologi Sumbawa
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UJI PROKSIMAT PELLET KAYU LAMTORO (Leucena leucocepalla) LOKAL SUMBAWA SEBAGAI BAHAN BAKAR ALTERNATIF Azis, Abdul; Aldrin; Nanda, Nanang Dwi
Jurnal TAMBORA Vol 9 No 1 (2025): EDISI 24
Publisher : Wakil Rektor 3, Direktorat Riset, Publikasi dan Inovasi, Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/tambora.v9i1.4934

Abstract

The availability of national oil and natural gas fuel reserves shows a downward trend, and is even predicted to run out in the next 9 years for petroleum products and 19.9 years for natural gas. Meanwhile, national demand for oil and gas continues to increase along with population growth. This causes an energy crisis which has an impact on the national economic crisis. So, strategic steps are needed to diversify new and renewable fuel sources originating from community-based managed biomass. On Sumbawa Island, the availability of lamtoro trees is abundant and available throughout the year and has not been utilized, except for goat feed. Lamtoro is an invasive plant species that can disrupt ecosystems, but its functions and economic benefits are rarely explored. Energy from lamtoro wood biomass has a calorific value according to SNI 8021:2014 standards so it is suitable as a substitute for fossil fuels to achieve energy security in the future. The aim of this research is to make wood pellets from an invasive plant species, namely lamtoro, by obtaining data, including proximate test data. This research method is experimental, namely the proximate test. The proximate test consists of testing water content, ash content, volatile matter content, bound carbon and heating value. Proximate testing results for wood pellets based on SNI 8021:2014 Wood Pellets. The results of this research include: maximum calorific value of 4211 cal/g (sample 5), lowest ash content of 0.66 (sample 5), lowest water content of 8.01 (sample 5) lowest volatile matter content of 60.72% (sample 5), the highest bound carbon content was 15.65% (sample 5). From the results of this research, Lamtoro wood pellets have met SNI 8021:2014 standards.
Analysis of the Phytochemical Performance of the Neem Plant (Azadirachta indica) Sumbawa Phenotype as a Natural Insecticide Azis, Abdul; Syazali, Muhammad; Chaidir, Riri Rimbun Anggih
Jurnal Pijar Mipa Vol. 19 No. 4 (2024): July 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i4.7041

Abstract

Excessive use of chemical insecticides on plants has had a negative impact on the environment and human health. To overcome this, the use of plant-based pesticides is an attractive alternative, but not yet fully optimal in Indonesia. This research aims to study the potential use of neem leaf extract (Azadirachta indica) as a plant insecticide, with a focus on local knowledge of the Samawa tribe on Sumbawa Island. Extraction methods and phytochemical analysis were carried out, as well as insecticidal power tests against several common pest species in the area. The research results show that neem leaf extract has the potential to be an effective natural insecticide in controlling pest populations. Factors such as extract concentration and drying method of neem leaves influence its effectiveness. The use of neem leaf extract at a dose of 80 gr/liter has proven to be more effective than the Dane brand of vegetable pesticide at three times the dose. However, the use of synthetic pesticides at the recommended dosage still shows faster and more effective results in controlling pests. This research contributes to the development of environmentally friendly and effective plant protection materials, and expands understanding of the potential of local natural resources for sustainable agriculture.
PENANAMAN BIBIT POHON KETAPANG (Terminalia catappa) SEBAGAI UPAYA MENCEGAH BAHAYA EROSI, MENJAGA KETERSEDIAAN AIR TANAH DAN SUMBER PAKAN HIJAUAN TERNAK KAMBING DI DESA PERNEK, KECAMATAN MOYO HULU Azis, Abdul; Fitriana, Maya; Husni
Jurnal Abdi Insani Vol 11 No 1 (2024): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v11i1.1339

Abstract

The impact of drought during the dry season was felt by the people of Pernek Village, Sumbawa Regency, namely that groundwater discharge was reduced significantly. This condition will continue to be a cause for concern as community activities expand corn farming areas to the point of destroying forest vegetation that is difficult to control. High community access to the Batulanteh KPH forest and weak law enforcement are factors in deforestation on Sumbawa Island. Therefore, concrete steps are needed to bridge these two problems. The aim of implementing this service is to educate the community to plant ecological ketapang trees so that they are beneficial economically and economically. Determine the planting point for ketapang trees so that they can function to prevent the danger of soil erosion. The service was used in the form of a lecture on the importance of planting trees by gathering residents, village officials and representatives from the university at the Pernek village hall, then continued with tree planting and assistance during the planting (maintenance) period at predetermined points. The results of this community service activity are increasing public understanding and awareness of climate change by showing enthusiasm in participating in this series of community service activities. Based on the results of the survey before this service program was held, the community did not understand the impact of drought in the form of reduced groundwater discharge due to deforestation due to the large area of ​​corn farming. The community does not yet understand the importance and function of standing trees (including ketapang trees) in reducing the danger of soil erosion during the rainy season. On the other hand, the public can gain new knowledge about the economic potential of the ketapang tree, both in terms of fruit, leaves and wood. This service program has a positive impact on residents regarding the benefits of greening and environmental sustainability.
EMISSION ANALYSIS OF LAMTORO WOOD PELLETS COMBINE PLASTIC AND SODIUM CARBONATE Abdul Azis; Aldrin; Amri Hidayat
Jurnal Belantara Vol 9 No 1 (2026)
Publisher : Forestry Study Program University Of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbl.v9i1.1150

Abstract

Leucaena leucocephala, commonly known as lamtoro, is an invasive species that proliferates in tropical regions, including Sumbawa Island, and poses a threat to local biodiversity. Nevertheless, the abundant biomass of this plant presents an opportunity for its utilization as a renewable energy source in the form of wood pellets. This study aims to analyze the emission characteristics of lamtoro-based wood pellets substituted with plastic waste and sodium carbonate, as a strategy to enhance energy efficiency while reducing the environmental impact of solid waste. Three pellet formulations were tested: (1) 100% lamtoro as the control, (2) lamtoro mixed with 10% plastic waste, and (3) lamtoro mixed with 10% sodium carbonate. Combustion tests were conducted using a flue gas analyzer to measure the concentrations of carbon monoxide (CO), carbon dioxide (CO₂), nitrogen oxides (NOx), and particulate matter. The results indicate that the addition of plastic waste significantly increased the calorific value of the pellets but also led to higher emissions of CO and NOx. In contrast, the addition of sodium carbonate demonstrated a positive effect by reducing CO emissions by 35% and NOx by 28% compared to the control, as well as improving combustion efficiency through a catalytic mechanism in the decomposition of carbon compounds. These findings suggest that lamtoro wood pellets combined with sodium carbonate are a promising alternative bioenergy source that is environmentally friendly, supports the management of invasive species, and contributes to the diversification of renewable energy sources in rural and conservation areas.
Co-Authors Aldrin Aldrin - Amri Hidayat Chaidir, Riri Rimbun Anggih Fitriana, Maya Husni Nanda, Nanang Dwi Syazali, Muhammad