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ESTIMASI EMISI GAS RUMAH KACA BERDASARKAN PENIMBUNAN SAMPAH DI TPA GILI TRAWANGAN Selvia, Siska Ita; Bakti, Lalu Arifin Aria; Sukartono, .; Kusumo, Bambang Hari; Surardji, .
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Vol 25, No 1 (2025): Ekologia : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekologia.v25i1.11515

Abstract

Gili Trawangan, one of the small island clusters in West Nusa Tenggara Province, faces serious problems in managing waste piled up in landfills with the open dumping method by only piling up without any backfilling or other processing. As a result, the Gili Trawangan TPA often experiences fires and explosions, indicating that the waste piles contain gas. This study aims to measure the potential gas stored in the piles of waste at the Gili Trawangan TPA Landfill and determine a strategy for developing methane gas potential as an alternative renewable energy for small islands. GHG emissions from landfills cannot be reduced even with technological advances, but the release of methane into the atmosphere can be significantly reduced by collecting methane gas. The methane gas content of waste at the Gili Trawangan TPA can be concluded that the peak of total methane gas production will occur in 2024, reaching a maximum of 192.23 MWh/year in the form of electrical energy and the form of gas as much as 216 kg of LPG/day. The potential energy figures obtained come from the potential of methane gas deposits in the same year of 172,100 m3/year based on modeling results using LandGEM software. Therefore, the potential of methane gas stored in waste piles can be used as an alternative energy source or as a starting point for policy-making for managing organic waste that triggers the formation of methane gas.
Nutrient Status and Mycorrhizal Population on Various Food Crops Grown Following Corn Inoculated with Indigenous Mycorrhiza on Sandy Soil of North Lombok, Indonesia Astiko, Wahyu; Fauzi, Muhammad Taufik; Sukartono, .
JOURNAL OF TROPICAL SOILS Vol. 20 No. 2: May 2015
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2015.v20i2.119-125

Abstract

This study was aimed to determine the nutrient status and population of arbuscular mycorrhizal fungi (AMF) on the second cropping cycle of corn-based cropping patterns which utilized indigenous mycorrhizal fungi on sandy soil. The experiment was conducted at the Akar-Akar village in Bayan district of North Lombok, in a Randomized Block Design, with 4 replications and 6 treatments of cropping cycles (P0 = corn-soybean as a control, in which the corn plants were not inoculated with AMF; P1 = corn-soybean, P2 = corn-peanut, P3 = corn-upland rice, P4 = corn-sorghum, and P5 = corn-corn, in which the first cycle corn plants were inoculated with AMF). Results indicated that the status of N, P, K and organic-C increased significantly up to 112%, 148%, 88%, 88% at 60 DAS and 66%, 135%, 54%, 60% at 100 DAS, respectively in the second cropping cycle of sorghum compared to control. Uptake of N, P, K and Ca the sorghum plants at 60 DAS of the second cropping cycle reached 200%; 550%; 120% and 490%, respectively a higher than in the control. Mycorrhizal populations (spore number and infection percentage) were highest in the second cycle sorghum, achieving 335% and 226% respectively, which were significantly higher than those in the control.