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All Journal International Journal of Engineering, Science and Information Technology JURNAL TEKNOLOGI MINERAL FT UNMUL
Ibrahim Ibrahim
Mulawarman University
Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Evaluasi Tingkat Keberhasilan Kegiatan Reklamasi Tambang Batubara PT XX Hafiz Saputra; Ibrahim Ibrahim; Yohanes Budi Sulistioadi; Harjuni Hasan
JURNAL TEKNOLOGI MINERAL FT UNMUL Vol 14, No 1 (2026): Jurnal Teknologi Mineral FT UNMUL Juni 2026
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jtm.v14i1.27627

Abstract

Coal mining activities have the potential to alter landscapes, reduce soil quality, and disrupt ecosystem functions. Reclamation is a mandatory effort to restore environmental functions and improve the productivity of post-mining land. This study aimed to evaluate the success level of coal mine reclamation activities at PT Ghani Raya Mandiri and assess the physical and chemical properties of soil as a revegetation growth medium. A quantitative descriptive survey approach was employed through field observations, laboratory analyses, and evaluation of company reclamation documents. The assessed parameters included backfilling, land recontouring, topsoil spreading, revegetation, acid mine drainage management, and vegetation maintenance. The results indicated that the overall reclamation success rate reached 65.49%, which falls into the moderate category. Backfilling achieved 70.36%, land recontouring 48.49%, topsoil spreading 21.87%, and revegetation recorded a plant survival rate of 80.06%. The average soil pH was 5.53, indicating suitable conditions for plant growth, while treated water quality showed an average pH of 6.79, complying with environmental quality standards. Soil conditions in reclaimed areas generally exhibited low fertility, characterized by low organic carbon content, available phosphorus, and cation exchange capacity. The study demonstrates that reclamation activities have produced satisfactory results; however, improvements in land shaping, topsoil management, and revegetation implementation are still required to enhance long-term reclamation success and ecosystem recovery.
Integrated Planning for Sustainable Clean Water and Sanitation at Mulawarman University Fahrizal Adnan; Febrina Zulya; Searphin Nugroho; Rahmahtriananda Faradilla; Aulia Fauziyah Luayi; Rizqi Nadhirawati; Budi Nining Widiarti; Ibrahim Ibrahim
International Journal of Engineering, Science and Information Technology Vol 6, No 1 (2026)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v6i1.1888

Abstract

Clean water and sanitation are essential components of a healthy, safe, and sustainable campus environment. At Mulawarman University, increasing numbers of students, lecturers, staff, and other academic community members require adequate water supply and sanitation infrastructure to support educational, administrative, and daily activities. This study aims to develop a long-term plan for clean water provision and sanitation facilities based on projected population growth through 2048. The methodology includes population projection analysis, estimation of clean water demand, assessment of sanitation facility requirements, and planning for solid and liquid waste management. The results indicate that demand for clean water and sanitation infrastructure will increase consistently with the growth of the university population. At the end of the sixth planning period in 2048, the projected served population reaches 64,458 people. This population requires a clean water production capacity of 966.88 m³/day to meet projected demand. Solid-waste management requirements include ten temporary waste-storage facilities (TPS), three dump-truck fleets, and one integrated waste-treatment facility (TPST) with an estimated required area of 1,129.38 m². Meanwhile, wastewater management must accommodate a potential black-water discharge of 96.69 m³/day and grey-water discharge of 676.81 m³/day. Based on these projections, the study recommends developing an integrated clean-water distribution network, improving solid-waste collection and treatment facilities, and establishing an integrated wastewater-management system capable of accommodating future demand. The proposed planning framework is expected to support Mulawarman University in improving environmental quality, strengthening campus sanitation services, and achieving more sustainable infrastructure development. Furthermore, the findings provide a quantitative basis for phased infrastructure investment and long-term campus environmental management through 2048
Co-Authors Aulia Fauziyah Luayi Budi Nining Widiarti Fahrizal Adnan Febrina Zulya Hafiz Saputra Harjuni Hasan Rahmahtriananda Faradilla Rizqi Nadhirawati Searphin Nugroho