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All Journal ASEAN Journal of Systems Engineering Journal of the Civil Engineering Forum
Muhammad Sulaiman
Universitas Gadjah Mada
Civil Engineering, Building, Construction & Architecture Engineering Environmental Science

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POTENTIAL AND FEASIBILITY ANALYSIS OF BIOMASS ENERGY FROM PALM OIL MILLS ON NORTH PENAJAM PASER REGENCY REGION OF THE NEW STATE CAPITAL INDONESIA Faruq Nashrulloh; Muhammad Sulaiman; Rachmawan Budiarto
ASEAN Journal of Systems Engineering Vol 4, No 1 (2020): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

This paper presents a techno-economic potential and feasibility analysis on the planning of Biomass renewable energy from palm oil mills on the North Penajam Paser Regency. They were analyzed using the last three years of production data history from 7 Palm oil Processing Factories in the region and using questionnaires and interviews. Total processing fresh fruit brunch is about 891.624 tons/year. Total potential electricity generated from palm oil residue (Fiber, Shell, and Stem) is 28.009 kWh. The factories are located in Babulu, Waru, Penajam, and Sepaku.The assessment of sustainability indicators in this research is considering technology and economic aspects. The technology aspect evaluates the technical planning of installations that are possible to build in the area. For financial aspects of sustainability, evaluates the net present value (NPV), internal rate of return (IRR) and, the payback period of renewable energy installation. This analysis is used to get a comprehensive insight from the potential biomass energy at the research location and conduct a feasibility study based on techno-economic analysis to develop new state capital Indonesia and the supporting regions.
Rainfall Trend and Variability Over Opak River Basin, Yogyakarta, Indonesia Wakhidatik Nurfaida; Hendra Ramdhani; Takenori Shimozono; Indri Triawati; Muhammad Sulaiman
Journal of the Civil Engineering Forum Vol. 7 No. 1 (January 2021)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.60628

Abstract

Rainfall intensity seems to be increasing nowadays due to climate change as presented in many studies of both global and regional scale. Consequently, cities worldwide are now more vulnerable to flooding. In Indonesia, increasing frequency of floods was reported for the past decades by The National Agency for Disaster Countermeasure (BNPB). To understand the rainfall changes, long-term trend evaluation over a specific area is then crucial due to the large variability of spatial and temporal rainfall distribution. This study investigates the homogeneity and trend of rainfall data from 20 stations over the Opak River basin, Yogyakarta, Indonesia. A long-term ground observation rainfall data whose period varies from 1979 to 2019 were analyzed. Non-parametric Mann – Kendall test was applied to assess the trend, while the magnitude was calculated using the Sen’s slope estimator. An increasing annual maximum of daily rainfall intensity was observed at four stations on a 0.95 confidence level based on the Mann – Kendall test, while the Sen’s slope estimator shows a positive trend at almost all stations. The trend of heavy rainfall frequency was also found to be significantly increased, with only one station showed a decreasing trend. Furthermore, this paper also described the spatial rainfall variability. Positive trend was mostly found during the rainy season, while the negative trend occurred during the dry season. This could pose a challenge for water resource management engineering and design, such as water supply systems or reservoir management. Understanding this phenomenon will benefit hydrologists in preparing future water resource engineering and management.
Co-Authors Faruq Nashrulloh Hendra Ramdhani Indri Triawati Rachmawan Budiarto Takenori Shimozono Wakhidatik Nurfaida