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All Journal IJEMS (Indonesian Journal of Environmental Management and Sustainability) International Journal of Agriculture System
Muhammad Rendana
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Energy Environmental Science Public Health

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Agricultural Land Evaluation Using GIS-Based Matching Method in Highland Areas for Oil Palm Cultivation Muhammad Rendana
International Journal of Agriculture System VOLUME 9 ISSUE 2, DECEMBER 2021
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ijas.v9i2.4259

Abstract

Oil palm (Elaeis guineensis) is one of the commodity crops and mostly found in tropical lands. This study aimed to analyze the current and potential land suitability for oil palm using the geographic information system (GIS) technique. The study was conducted in the Ranau area, State of Sabah, Malaysia. Field activity was carried out to collect soil samples and land information in the study area. Land suitability was then assessed using the matching method and GIS software was employed to produce a land suitability map for oil palm. The results indicated that the current land suitability classes in the study area were highly suitable (S1) with a total area of 99,118 ha (27.4%), moderately suitable (S2) with 110,108 ha (30.4%), marginally suitable (S3) with 109,533 ha (30.2%), currently not suitable (N1) with 2,728 ha (0.7%), and permanently not suitable (N2) with 40,693 ha (11.3%). While the potential land suitability classes showed highly suitable (S1) was 198,206 ha (54.7%), moderately suitable class (S2) was 123,281 ha (34%) and permanently not suitable (N2) was 40,693 ha (11.3%). Suitable areas that could be planted with oil palm included the gently sloping flank and the low gradient slope margin. Availability of nutrients and work capability were the dominant limiting factors in the study area. The output of this study recommends that the Ranau area had the potential for oil palm although it still needs land improvements for sustainable oil palm cultivation.
Effectiveness of Ultrafiltration Membrane Technology Combined with Zeolite–Ginger Coral Adsorbent in pH, TDS, EC, Fe, and Mn in Groundwater for Clean Water Production Susanti, Susi; Muhammad Rendana; Selpiana; Nina Haryani; Budi Santoso; Prahady Susmanto; Aminullah, Mohammad Wahyu; Hendrik Jimmyanto; Deby Ansyory; Nyimas Ulfatry Utami; Robekca Purba; Agbal Andrean; Zikri Rahman Rizal; Afriza Citra Rahmadhini; Halimah Maulidia
Indonesian Journal of Environmental Management and Sustainability Vol. 10 No. 2 (2026): June
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2026.10.2.134-144

Abstract

Groundwater is a vital water source for many communities, especially in rural areas, but its quality often fails to meet clean water standards due to contaminants such as heavy metals, organic compounds, and unsuitable pH, TDS, and EC levels. This study examines an integrated water treatment system combining adsorption and ultrafiltration technologies. The process begins with adsorption using zeolite and coral ginger stone to remove contaminants through ion exchange and Van der Waals interactions. The pre-treated water is then filtered through an ultrafiltration membrane to eliminate suspended solids and microorganisms based on pore size exclusion. The novelty of this study lies in the variation of adsorbent compositions, namely 100 g zeolite, 100 g coral ginger stone, and a 50:50 g mixture. Results indicate that the 50:50 combination provides the highest efficiency in improving groundwater quality. Under optimal conditions, TDS decreased to 38 ppm, EC to 76 µS/cm, temperature reached 29.8 °C, and pH approached neutral at 6.28, meeting clean water standards.
Co-Authors Afriza Citra Rahmadhini Agbal Andrean Budi Santoso Deby Ansyory Halimah Maulidia Hendrik Jimmyanto Moh. Wahyu Aminullah Nina Haryani Nyimas Ulfatry Utami Robekca Purba Selpiana Susi Susanti Susmanto, Prahady Zikri Rahman Rizal