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All Journal Jurnal Sains dan Teknologi Jurnal RISET Geologi dan Pertambangan Journal of Degraded and Mining Lands Management Jurnal Teknologi Mineral dan Batubara JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Jurnal Abdidas Ophiolite : Jurnal Geologi Terapan OPHIOLITE : Jurnal Geologi Terapan Jurnal Teknologi Mineral dan Batubara Majalah Pengabdian Indonesia Jurnal Teknologi Sumberdaya Mineral KARISMAS - JURNAL PENGABDIAN KARYA INOVASI MASYARAKAT
Deniyatno, Deniyatno
Halu Oleo University, Faculty Of Technology And Earth Science, Geophysics Department
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Other

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Assessing the environmental impact of Kolaka peridotites from nickel mining waste for geological carbon storage: Mineralogy, carbonation potential, and rock property changes Deniyatno, Deniyatno; Masri, Masri; Jaya, Rio Irhan Mais Cendra; Wahab, Wahab; Syahrul, Syahrul
Journal of Degraded and Mining Lands Management Vol. 12 No. 5 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.125.8899

Abstract

This study investigated the carbonation potential of peridotite from the Kolaka Ultramafic Complex in Sulawesi, Indonesia, for carbon capture and storage (CCS) applications. Peridotites, particularly those enriched in magnesium, are known for their high reactivity with CO?, forming stable mineral carbonates. However, the Kolaka region’s peridotites have not been thoroughly assessed for their carbonation prospects. This research addresses this gap by examining the petrology, geochemistry, and physical-magnetic properties of peridotite, focusing on its serpentinization and carbonation characteristics. An integrated approach applying petrographic analysis, X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), Schmidt hammer, and magnetic susceptibility tests, was used to determine the mineral composition, specifically the carbonation minerals, and the changes in the physical properties of the rocks during carbonation. The results showed that the peridotites, particularly serpentinized lherzolites, exhibit high carbonation potential characterized by the abundance of magnesium-rich olivine-pyroxene minerals. Carbonation reactions are characterized by the presence of magnesite and brucite, leading to significant changes in rock strength and magnetic susceptibility. Carbonation occurs by an advanced serpentinization process, which increased mineral reactivity and leads to reducing uniaxial compressive strength (UCS). Additionally, magnetic susceptibility exhibits positive correlation with serpentinization, accompanied by magnetite formation. These findings suggest that Kolaka's serpentinized peridotite, as mining waste, is a viable candidate for CO? storage. The ex-situ carbonation mechanism allows Kolaka's fine-grained peridotite to capture CO?, while also improving nickel ore recovery, minimizing dust, neutralizing acid mine drainage, and enhancing soil quality.
PENGARUH VARIABEL PELINDIAN TERHADAP EKSTRAKSI NIKEL DALAM PELINDIAN BIJIH NIKEL LATERIT Wahab, Wahab; Deniyatno, Deniyatno; Ismayanti, Windi; Supriatna, Yayat Iman
JST (Jurnal Sains dan Teknologi) Vol. 10 No. 2 (2021)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (763.012 KB) | DOI: 10.23887/jstundiksha.v10i2.33125

Abstract

Pelindian bijih nikel laterit pada tekanan atmosfir menjadi perhatian karena memiliki beberapa kelebihan yaitu biaya operasional dan kebutuhan energi yang rendah. Dalam penelitian ini akan dipelajari pengaruh temperatur, konsentrasi asam, dan waktu pelindian terhadap persen ekstraksi nikel. Dalam penelitian ini variabel yang digunakan yaitu temperatur (80⁰C, 90⁰C, 100⁰C), konsentrasi asam sulfat (0,8 molar, 1,1 molar, 1,4 molar) dan waktu pelindian (80 menit, 90 menit, 100 menit). Agen pelindi yang digunakan yaitu larutan asam sulfat. Berdasarkan hasil penelitian diperoleh persen ekstraksi nikel tertinggi yaitu 91,430% pada temperatur 100⁰C dan waktu pelindian 180 menit. Hasil Analysis of Variance (ANOVA) menunjukkan urutan variabel yang paling yaitu konsentrasi asam sulfat (B), temperatur (A), waktu pelindian (C), interaksi temperatur-waktu pelindian (AC), interaksi temperatur-konsentrasi asam sulfat (AB), interaksi temperatur-konsentrasi asam sulfat-waktu pelindian (ABC), dan interaksi temperatur-waktu pelindian (BC).
Community Assistance in the utilization of Nickel Slag in the Morosi Village Firdaus; Awaliah, Wd Rizky; Anshari, Erwin; Wahab; Deniyatno; Mili, Marwan Zam
Majalah Pengabdian Indonesia Vol. 1 No. 2 (2024): Agustus 2024
Publisher : Teras Kampus as a member of PT Palem Edukasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69616/maindo.v1i2.15

Abstract

Morosi Village located in Konawe Regency is one of the areas in which there is a nickel processing company. The nickel processing produces solid waste, one of which is nickel slag. The amount of nickel slag is accumulating day by day, because each process of refining one ton of nickel product produces 50 times the solid waste, equivalent to 50 tons. So that from the results of quite a lot of waste, research was carried out to use solid waste as a concrete forming material, either as coarse and fine aggregate, or as a cement mixture. Government Regulation No. 101 of 2014 classifies nickel slag as B3 waste hazard category 2 with waste code B403. This means that nickel slag is a waste that has a delayed effect, and has an indirect impact on humans and the environment. Meanwhile, at the end of 2019, the Indonesian National Standard (SNI) concerning the choice of nickel slag material from electric furnaces. This SNI was also prepared by the Ministry of Industry to support the development of nickel slag standards and as a solution for nickel slag management. The existence of SNI is also intended as a reference to optimize the use of nickel slag as aggregate, substitute for natural aggregate and other uses. Some examples of products made from nickel slag include bricks, precast and ready-to-print concrete, road base and field, soil improvers, growing media and fertilizers, mortar and cement slag, composite portland cement, and cement geopolymers. To accommodate the use of nickel slag, assistance is needed to the community, especially in Morosi Village to be able to process with appropriate, effective and efficient technology in accordance with its physical characteristics and chemical characteristics. This will be an alternative to reduce the amount of nickel slag that can pollute the environment, in addition to increasing people's income.
Sosialisai Bahaya Radiasi Gelombang Elektromagnetik Handphone dan Dampaknya bagi Kesehatan : Siswa SD Kendari I Nyoman Sudiana; Ernita Susanti; Aripin; Deniyatno
KARISMAS - JURNAL PENGABDIAN KARYA INOVASI MASYARAKAT Vol. 1 No. 1 (2024):
Publisher : Sahira Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70282/karismas.v1i1.5

Abstract

Penggunaan handphone semakin meluas, terutama di kalangan anak-anak. Namun, minimnya pemahaman mengenai dampak radiasi gelombang elektromagnetik pada kesehatan anak-anak menjadi kekhawatiran. Oleh karena itu, kegiatan pengabdian ini bertujuan untuk memberikan sosialisasi sains kepada siswa Sekolah Dasar mengenai bahaya radiasi gelombang elektromagnetik handphone. Kegiatan sosialisasi dilakukan selama dua hari di Sekolah Dasar Negeri 19 Baruga, Kota Kendari, melibatkan 46 siswa kelas VI. Materi disampaikan secara interaktif dengan pendekatan sains, menggunakan video presentasi untuk mendemonstrasikan dampak negatif radiasi. Hasil monitoring menunjukkan peningkatan pemahaman siswa terhadap dampak radiasi dan keterampilan dalam menghindari penggunaan handphone yang berlebihan. Indikator keberhasilan mencakup pemahaman akan dampak negatif radiasi, peningkatan keterampilan menghindari perambatan gelombang elektromagnetik, dan perubahan pola pikir dengan pendekatan sains. Meskipun terdapat kelemahan dalam durasi kegiatan selama dua hari, hasil menunjukkan tingkat antusiasme dan pemahaman yang baik. Langkah-langkah pencegahan dan peningkatan kesadaran diharapkan dapat mengurangi dampak negatif radiasi pada kesehatan anak-anak.
Co-Authors Al Rubaiyn Ali Okto Alrum Armid Andi Deddy Setiawan Anshari, Erwin Aripin Armid Armid Awaliah Nafiu, Wd Rizky Awaliah, Wd Rizky Bana, Sahindomi Dandy Ashari Ernita Susanti Firdaus Firdaus Firdaus Firdaus Firdaus Firdaus Firdaus Harisma Buburanda, Harisma Hasria Hasria, Hasria Iradat Salihin Ismayanti, Windi Jaya, Rio Irhan Mais Cendra Junartin Teke La Ode Nafiu Lies Indriyani M.Pd Prof. Dr. I Nyoman Sudiana . Marthines Saranga Marwan Zam Mili Marwan Zam Mili Masri Masri Mili, Marwan Zam Muliddin Okto, Ali Restele, La Ode Ridwan Adi Surya Suparwi Suparwi Syahrul Syahrul Wahab Wahab Wahab Wahab Wahab Wd Rizky Awaliah Yayat Iman Supriatna, Yayat Iman Yayat Iman Supriyatna