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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) International Journal of Reconfigurable and Embedded Systems (IJRES) Indonesian Journal of Geography Geo Media: Majalah Ilmiah dan Informasi Kegeografian Perkebunan dan Lahan Tropika Media Komunikasi Geografi Majalah Geografi Indonesia IJOG : Indonesian Journal on Geoscience Indonesian Journal of Forestry Research Journal of Degraded and Mining Lands Management Forum Geografi GEA, Jurnal Pendidikan Geografi Jurnal Geografi Biosaintifika: Journal of Biology & Biology Education Forest and Society Social, Humanities, and Educational Studies (SHEs): Conference Series Journal of Environmental Science and Sustainable Development Jurnal Wana Tropika An-Nuur Al Iqtishadiyah: Journal of Islamic Economics and Finance Jurnal Teknologi Lingkungan Riemann : Research of Mathematics and Mathematics Education Al Fattah Ejournal Sma Al Muhammad Cepu Indonesian Journal of Forestry Research Jurnal Wana Tropika
Eko Haryono
Fakultas Geografi, Universitas Gadjah Mada
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Assessing the Environmental Footprint: A Life Cycle Assessment of Greenhouse Gas Emissions from Energy Consumption in 3 and 4-Star Hotels in Pontianak, West Kalimantan Nisa, Raysa Khoirun; Haryono, Eko; Santosa, Langgeng Wahyu
Jurnal Teknologi Lingkungan Vol. 25 No. 1 (2024)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2024.964

Abstract

Persebaran usaha penginapan di Indonesia hingga tahun 2021 terus meningkat, di mana 48,95% merupakan hotel berbintang. Pada operasionalnya, hotel memerlukan energi dari berbagai jenis bahan bakar yang menghasilkan emisi berupa gas rumah kaca. Studi ini dilakukan pada kasus di Hotel X (bintang 4) dan Hotel Y (bintang 3) di Kota Pontianak, Kalimantan Barat yang menggunakan energi dari batubara, gas alam cair, dan bahan bakar minyak. Tujuan penelitian ini adalah untuk menganalisis dampak lingkungan dari gas rumah kaca menggunakan metode analisis daur hidup. Data inventori dilakukan terhadap jenis sumber energi, jumlah alat, dan lama penggunaan pada tiap fasilitas yang tersedia di hotel. Aplikasi OpenLCA 1.11.0 dan database CML-IA baseline digunakan untuk menganalisis dampak lingkungan yang dihasilkan. Kategori dampak yang dianalisis yaitu potensi dampak pemanasan global, penipisan abiotik, dan potensi oksidasi fotokimia. Dampak lingkungan terhadap pandemik COVID-19 dan strategi manajemen gas rumah kaca juga didiskusikan. Hasil penelitian menunjukkan bahwa jumlah tamu, fasilitas dan jenis bangunan berpengaruh pada emisi yang dihasilkan. Jumlah tamu pada tahun 2020 merupakan jumlah terkecil dibandingkan tahun 2019 dan 2021, yang sejalan dengan jumlah konsumsi energinya. Jumlah fasilitas pada Hotel X yang lebih banyak dibandingkan Hotel Y juga menyebabkan Hotel X menghasilkan lebih banyak emisi dibandingkan Hotel Y. Rekomendasi dari penelitian ini berupa perencanaan strategi pengelolaan konsumsi energi yang lebih baik, terutama pada penggunaan lampu dan pendingin ruangan. Untuk mengurangi konsumsi energi dari penggunaan alat tersebut dapat diterapkan sistem sensor untuk aktivasi listrik, serta penggunaan elektronik dengan daya yang lebih rendah. Diharapkan hasil riset ini dapat memberikan solusi bagi perencanaan strategi pengelolaan energi yang berkelanjutan di hotel berbintang dan diperlukan inventarisasi detail untuk mengetahui dampak lingkungannya secara komprehensif.   Abstract The distribution of Indonesia lodging businesses in 2021 has been continuously increase, with 48.95% being star-rated hotels. In their operations, hotels require energy from various types of fuels that produce emissions in the form of Greenhouse Gases. This study was conducted on the cases of X Hotel (4-star) and Y Hotel (3-star) in Pontianak, West Kalimantan, which utilize energy from coal, liquefied natural gas, and oil fuels. The research objective is to analyze the environmental impact of greenhouse gases using the life cycle analysis method. Inventory data were collected for the types of energy sources, the number of appliances, and the duration of usage for each facility available in the hotels. OpenLCA 1.11.0 application and CML-IA baseline database were employed to analyze the resulting environmental impact. The impact categories analyzed include the global warming potential, abiotic depletion, and photochemical oxidation potential. The environmental impact of the Covid-19 pandemic and greenhouse gas management strategies are also discussed. The research results indicate that the number of guests, facilities, and building types influence the emissions produced. The number of guests in 2020 was the smallest compared to 2019 and 2021, correlating with the energy consumption. The higher number of facilities in X Hotel compared to Y Hotel also results in X Hotel producing more emissions than Y Hotel. Recommendations from this research include better planning for energy consumption management strategies, especially in the use of lighting and room cooling. To reduce energy consumption from lighting and air conditioning, the implementation of sensor systems for electrical activation and the use of electronic devices with lower power consumption can be applied. It is hoped that the findings of this research can provide solutions for sustainable energy consumption management strategies in star-rated hotels, and a more detailed inventory is needed to comprehensively understand its environmental impact.
Karst Aquifer Characterization by Means of Its Karstification Degree and Time Series Analysis (Case: Ngerong Spring in Rengel Karst, East Java, Indonesia) Mujib, Muhammad Asyroful; Adji, Tjahyo Nugroho; Haryono, Eko; Naufal, Muhammad; Fatchurohman, Hendy
Indonesian Journal on Geoscience Vol. 11 No. 1 (2024)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.11.1.45-60

Abstract

The purpose of this study is to define the characteristics of the karst aquifer, which is approximated by the parameters of (1) degree of karstification (Dk) and (2) time series analysis (cross-correlation and auto-correlation). This research focuses on the Ngerong Spring, the largest spring in Rengel Karst, East Java, Indonesia. Pendant rain gauge RG-3M and HOBO U20L-02 water-level data loggers were installed over one year with a recording interval of 15 minutes. Furthermore, after one year of time-series discharge data was obtained, the discharge recession coefficient was applied to make the recession formula. It was then used to estimate the karstification degree scale from 1 to 10. The aquifer memory system and the spring response to rainfall events were analyzed by auto-correlation and cross-correlation. The results of this study indicate that the karstification degree (Dk) of the Ngerong Spring system is 4.8-5.0, with one laminar and one turbulent flow subregime type. The aquifer system comprises a subregime with turbulent and laminar flow, where the substantial role in groundwater discharge plays the subregime with laminar flow. Meanwhile, time series analysis shows that the capacity of aquifer storage in the Ngerong Spring is large enough. It has a memory effect for 26.41 days, followed by a rapid response to rainfall events within 8 hours. Compared with several other karst sites in Java, the Ngerong Spring aquifer has the youngest development level with the best storage and the slowest release.
RAINFALL VARIABILITY IN GUNUNGSEWU KARST AREA, JAVA ISLAND, INDONESIA Cahyadi, Ahmad; Haryono, Eko; Nugroho Adji, Tjahyo; Widyastuti, Margaretha; Agus Riyanto, Indra; Taufiq Nur Muhammad, Dzakwan; Fattah Tastian, Naufal
Indonesian Journal of Forestry Research Vol. 8 No. 1 (2021): Indonesian Journal of Forestry Research
Publisher : Association of Indonesian Forestry and Environment Researchers and Technicians

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2021.8.1.23-35

Abstract

Karst area is highly susceptible to changes to climate parameters. One of the parameters is rainfall variability. In addition to shaping the condition of water resources, rainfall in the Gunung Sewu karst area determines the nature of crop and livestock of the agriculture sectors―the local population's main economic activities, warranting the significance of the rainfall variability studies. Rainfall variability in karst areas also affects disaster conditions such as drought and floods. However, due to insufficient meteorological data in quality and quantity, there has been no rainfall variability studies conducted in this locality. The research intended to analyze rainfall variability in the Gunung Sewu karst area in 1979‒2013 by utilizing rainfall predictions from satellite images that many scholars had tested in different locations and recognized as having good quality. In the analysis, mean monthly rainfall was calculated, and the trends of annual rainfall and average rainfall intensity, dry and rainy seasons, the number of rainy days, and the effect of ENSO (El Niño Southern Oscillation) on rainfall were analyzed. The research data were 35 years of daily rainfall records derived from the National Centers for Environmental Prediction (NCEP) Climate Forecast System Reanalysis (CFSR). The analysis results showed that the mean rainfall, number of rainy days, and rainfall intensity had an increasing trend. Also, El Niño quantitatively influenced the rain in the Gunung Kidul karst area.
Co-Authors Agus Budhie Wijatna Agus Riyanto, Indra Ahmad Cahyadi **) Al Murtaqi , Moch. Ridwan Aries Dwi Siswanto Danardono, Danardono Diah, Husna Didik S Dzakwan Taufiq Nur Muhammad Eka Sulistiyowati Emilya Nurjani ENDANG SUTARININGSIH SOETARTO Estuning Tyas Wulan Mei Faiz Zainal Muttaqin Fajri Ramadhan Fatchurohman, Hendy Fattah Tastian, Naufal Hakim, Arief Abdurrahman Haryadi Permana Hatma Suryatmojo Hilary Reinhart Imam Fauzi Indra Agus Riyanto J. Susetyo Edy Y Jamulya . Jamulya ., Jamulya Khoirul Anwar Langgeng Wahyu Santosa M Iqbal Taufiqurrahman Sunariya M Widyastuti M. Widyastuti Margaretha Widyastuti Muhamad Wahyudin Muhammad Alwan Aziz Muhammad Asyroful Mujib Muhammad Baiquni Muhammad Naufal Muhammad Naufal, Muhammad Mustofa, Hidayatul Naufal Fattah Tastian Ngaji, Alfred Umbu Kuala Ni'matus Sa'adah, Ulfa Nisa, Raysa Khoirun Nugroho Adji, Tjahyo Nur Lailatul Izzah , Armiya Nurani, Idea Wening Petre, Angelo Andi Pradipa, Hanindha Pratama, Thomas Oka Puguh Dwi Raharjo Putra, Eko Bayu Dharma Putra, Rakhmat Dwi Qoniatun, Siti Rini Rachmawati Riyanto, Indra Agus Rizki Adriadi Ghiffari Rohmah, Amandita Ainur Romza Fauzan Agniy Rossie Wiedya Nusantara Rossie Wiedya Nusantara Saralah, Thas SARIMAN Satrio, Fahry Adhi Septian, Damar Setiadi Setiadi Setiawan, Muhammad Anggri Sudarmadji Sudarmadji Sudarmadji Sudarmadji Sudarmadji Sudrajat Sudrajat Sunarno Sunarno Taufiq Nur Muhammad, Dzakwan Tjahyo Nugroho Adji Tjahyo Nugroho Adji Tjut S. Djohan Tjut Sugandawaty Djohan Wahyu Broto R Winardi Winardi