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All Journal Journal of Degraded and Mining Lands Management Jurnal GEOSAPTA Jurnal Agriovet JPKMI (Jurnal Pengabdian Kepada Masyarakat Indonesia) Prima Abdika: Jurnal Pengabdian Masyarakat MINERAL
Pebrianto, Rosihan
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PENGEMBANGAN KAPASITAS PENDUDUK DALAM PEMANFAATAN KOTORAN SAPI MENJADI PUPUK ORGANIK: DEVELOPMENT OF POPULATION CAPACITY IN UTILIZING COW MANAGE INTO ORGANIC FERTILIZER Pebrianto, Rosihan; Asyik, Makmur; Bochori, Bochori; Purbasari, Diana
Jurnal Agriovet Vol. 6 No. 1 (2023): JURNAL AGRIOVET
Publisher : LPPM UNIVERSITAS KAHURIPAN KEDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51158/agriovet.v6i1.998

Abstract

Desa Langkan merupakan salah satu desa yang berada di Kecamatan Banyuasin III Kabupaten Banyuasin Provinsi Sumatera Selatan. Desa yang memiliki potensi kotoran sapi yang begitu besar karena kelompok tani desa ini mendapatkan hibah sapi dari Pemerintah Pusat. Kandangnyapun merupakan bantuan dari Pemerintah. Selama ini kotoran sapi tidak digunakan oleh penduduk setempat, melainkan hanya dibuang begitu saja. Lingkungan yang berbau menjadi pemandangan yang biasa. Melalui pendekatan pengetahuan, penduduk setempat didampingi untuk meningkatkan kapasitas mereka. Maka dilakukanlah kegiatan pengabdian ini dengan memadukan antara teori dan praktek langsung. Bahan pupuk organik seperti kotoran sapi, EM4, gula merah, dolomit atau kapur, dan air merupakan bahan utama pembuatan pupuk organik ini. Setelah dilakukan penyampaian materi kemudian dilanjutkan dengan praktek pembuatan pupuk organik. Hasilnya penduduk memiliki kemampuan dan memahami setiap proses pembuatan pupuk organik. Setelah 7 hari kegiatan ini berlangsung dan penduduk sudah menikmati hasil pupuk organik yang dibuat saat kegiatan ini. Lingkungan yang sebelumnya kotor sudah ada perbaikan. Kotoran sapi yang selama ini menumpuk sudah mulai dimanfaatkan sebagai pupuk organik dan bernilai jual. Kedepan, mengingat potensi kotoran sapi yang begitu besar di desa Langkan ini, nanti juga akan dikembangkan pemanfaatan kotoran sapi menjadi energi biogas
Studi Kinerja Alat Thickener pada Hasil Pencucian Bijih Bauksit Skala Laboratorium (Aplikasi Rancangan Alat) Asof, Marwan; Pebrianto, Rosihan; Fauzan, Ahmad
Geosapta Vol 9, No 2 (2023): JULI 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v9i2.15780

Abstract

Bauksit adalah material pertambangan yang terdiri dari satu atau beberapa mineral aluminium oksida yang terhidrasi, berkomposisi zat-zat pencemar seperti oksida besi, silika, dan titanium. Mineral pembentuknya bisa berupa gibbsite Al(OH)3, boehmite AlO(OH), atau diaspore AlO2H. Dalam upaya menghasilkan bijih bauksit, diperlukan proses penambangan dan pengolahan hingga diperoleh feed dengan kadar 46,57%. Oleh karena itu, diperlukan langkah-langkah pengolahan tambahan untuk meningkatkan kadar Al2O3 agar layak secara ekonomi. Dalam penelitian ini, untuk meningkatkan kadar Al2O3 pada bijih bauksit, digunakan alat thickener dengan air sebagai medium pemisahnya. Penggunaan alat ini bertujuan untuk meningkatkan kadar bijih bauksit agar sesuai dengan standar smelter. Riset ini melibatkan analisis menaikkan kualitas bijih bauksit melalui pengolahan dengan variasi pada debit air, sudut kemiringan, dan kecepatan dari putaran kipas. Debit yang dimanfaatkan adalah 0,048 L/s, 0,2 L/s, dan 0,25 L/s. Sudut kemiringan yang digunakan berkisar antara 35° hingga 75°, dan kecepatan putaran kipas adalah 32 rpm dan 43 rpm. Hasil riset menunjukkan bahwa sembilan percobaan yang berhasil meningkatkan kadar Al2O3 hingga sesuai dengan level industri smelter menggunakan alat thickener. Kadar Al2O3 tertinggi tercapai pada percobaan dengan debit air sebesar 0,2 L/s dan sudut kemiringan kipas sebesar 75°. Pada keadaan  tersebut, didapatkan konsentrat Al2O3 senilai 62,14% dengan recovery senilai 83,66%.
Peningkatan Pengetahuan Pembuatan Pakan Sapi dari Hasil Fermentasi Jerami Padi sebagai Pakan Alternatif menggunakan Metode Ground truth Juniah, Restu; Pebrianto, Rosihan; Asyik, Makmur; Amin, Muhammad
JPKMI (Jurnal Pengabdian Kepada Masyarakat Indonesia) Vol 4, No 1: Februari (2023)
Publisher : ICSE (Institute of Computer Science and Engineering)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstrak: Jerami padi biasanya tidak dimanfaatkan oleh penduduk. Sebagian besar hanya dibuang begitu saja dan hanya sebagian kecil digunakan sebagai pupuk organik. Desa Mangsang merupakan desa yang memiliki sawah dan penduduknya banyak yang memiliki ternak sapi. Ketika musim kemarau, penduduk umumnya mengalami kesulitan dalam menyediakan pakan untuk ternak sapi mereka. Kurangnya pengetahuan dan minimnya akses informasi membuat penduduk setempat tidak begitu mengetahui jika fermentasi jerami padi dapat digunakan sebagai pakan alternatif dan dapat disimpan dalam waktu yang lama. Tujuan dari pengabdian ini untuk membantu penduduk dalam mempersiapkan pakan alternatif bagi sapi terutama dimusim kemarau. Metode kegiatan yang digunakan yaitu dengan pendekatan teori dan praktek. Kegiatan yang berlangsung selama 3 hari dilakukan dengan cara penyampaian materi kemudian praktek pembuatan. Ground truth merupakan metode yang digunakan dalam kegiatan ini dimana pengetahuan dihasilkan pengalaman bukan dari teori. Hasilnya pemahaman materi yang awalnya hanya 40% menjadi 90% dan praktek yang awal hanya 49% menjadi 100%. Peningkatan yang sangat signifikan ini akibat dari adanya pola pemberian materi yang diikuti langsung dengan praktek sehingga tujuan dari kegiatan ini dapat lebih mudah dicapai. Memang benar kegiatan seperti ini akan meningkatkan pengetahuan dan kreativitas penduduk.Abstract: Rice straw is usually not utilized by the population. Most of it is just thrown away and only a small portion is used as organic fertilizer. Mangsang Village has rice fields and many residents own cattle. During the dry season, residents generally experience difficulties in providing feed for their cattle. Lack of knowledge and lack of access to information makes local residents not really know if fermented rice straw can be used as an alternative feed and can be stored for a long time. The purpose of this service is to help residents in preparing alternative feed for cattle, especially in the dry season. The method of activity used is with a theoretical and practical approach. Activities that lasted for 3 days were carried out by delivering material and then practicing making. Ground truth is a method used in this activity where knowledge is generated by experience not from theory. As a result, the understanding of the material which was initially only 40% became 90% and the initial practice was only 49% to 100%. This very significant increase is due to the pattern of providing material followed directly by practice so that the objectives of this activity can be more easily achieved. It is true that activities like this will increase the knowledge and creativity of the population.
Optimization re-digging waste dump on exploitation Air Laya coal mine in South Sumatera, Indonesia Pebrianto, Rosihan; Setiawan, Budhi; Ibrahim, Eddy; Sutriyono, Edy
Journal of Degraded and Mining Lands Management Vol. 12 No. 4 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.124.7953

Abstract

In doing slope design, paying attention to slope geometry and soil shear strength is necessary. Determination of slope geometry design also considers the balance between height and slope and production benefits. Research was conducted to analyze slope stability by testing physical and mechanical properties, limit equilibrium, and probabilistic Monte Carlo methods. The surface area of the Overburden stripping area in the 2024 RKP design amounted to 8,172.79 ????2. The production target is 2,000,000 tons of coal with a volume of overburdened material that must be stripped of 29.00, and a Stripping Ratio was obtained with a value of 14.5. The results of the overall slope evaluation of the Old Dump material with an overall slope height of 66.582 m, a slope width of 447.69 m, an overall slope of 8.32? and a bench width of 25 m, a bench height of 6 m with a ratio of 1:3 and a single slope angle of 18.43?. Then, the redesign was carried out and obtained recommendation results of 64.799 m overall slope height, 303.33 m slope width, 1,3.02? overall slope, and 25 m bench width, bench height at elevation 131-110 of 8 m with a comparison ratio of 1:2, single slope 26.57? and at elevation 110-50 of 8 m with a comparison ratio of 1:1.5, single slope 33.69.
Kajian Teknis Perencanaan Desain Peledakan Untuk Mengurangi Getaran Tanah di PT Pamapersada Nusantara Site PT Bukit Asam Tbk: Study Of Blast Design Technical To Minimize Ground Vibration At PT Pamapersada Nusantara Site PT Bukit Asam Tbk Pebrianto, Rosihan; Wibowo, Satriya; Al Hadi, Alex
MINERAL Vol 10 No 1 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/r2ftaz19

Abstract

The impacts of drill and blast activities is ground vibration. A limit of PPV according to SNI is 5 mm/s for buildings with foundations, masonry and cement. The average PPV in this blasting activity is 2 mm/s. The community is complain that level of ground vibration produced was still felt and worried damage the building. So, PT Bukit Asam Tbk has made a regulation of the ground vibration is ≤ 1 mm/s for blasting in the near houses. The purpose of this study is to make a blast design geometry form burden, spacing, and stemming, weight of explosives maximum, , delay configuration, and estimate of the fragmentation in 800m by PPV  ≤ 1 mm/s. This research method uses quantitative research methods by observing, collecting and processing data, testing data results, and making blast designs. The results show that the PPV value can be predicted using the equation of non-linear power regression. The design of the blasting geometry to obtain a PPV value of ≤ 1 mm/s is by using a presplit method, with a vulnerable space of 6 – 7.5 m, a burden of 5 – 6.5 m, and a maximum of explosives is 24-40 Kg/hole.
Pendampingan dan Pengembangan Pembibitan Kelapa Sawit Tahap Pre Nursery Pebrianto, Rosihan; Yusuf, Maulana; Ibrahim, Eddy
Prima Abdika: Jurnal Pengabdian Masyarakat Vol. 3 No. 3 (2023): Volume 3 Nomor 3 Tahun 2023
Publisher : Program Studi Pendidikan Guru Sekolah Dasar Universitas Flores Ende

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/abdika.v3i3.3044

Abstract

Oil palm is one of the main plantation commodities in the South Sumatra region. The high price of palm oil makes people try to open or replace their land into oil palm plantations. The failure of the people's oil palm nurseries is a very serious problem during the pandemic. However, in preparing the oil palm seeds, the community is considered a failure because the success rate for the nursery is below 50% or even only 20%. The community's ability to buy oil palm seeds also does not exist because the seeds sold in the market range from Rp. 23,000 to Rp. 45,000 per seed 6 months old. Therefore, assistance and development of early stage oil palm nurseries is carried out. It is hoped that this activity can help the community's difficulties in an effort to participate in the welfare of the local community. The method used is the delivery of material then followed by practice. This practice starts from preparing the planting medium, planting, care, and maintenance. The results obtained show that the failure of the nursery experienced by the community was caused by an inappropriate planting medium, namely the size of a polybag less than 30cm x 30 cm. Then there is no shade so that many seeds experience drought and die. Maintenance of seeds that are not given enough attention, such as watering and fertilizing. These three factors are the main problem of nursery failure. The results of the nursery carried out in this activity reached 98% of the total seeds planted.
POTENSI LOGAM TANAH JARANG DI DALAM ABU BATUBARA: POTENTIAL OF RARE EARTH METALS IN COAL ASH Purbasari, Diana; Pebrianto, Rosihan; Harsiga, Edwin
MINERAL Vol 8 No 2 (2023): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v8i2.4364

Abstract

Coal is a fossil fuel that is still used as fuel for Steam Power Plants (PLTU). The greater the demand for electrical energy, the greater the need for coal to meet the fuel needs of the PLTU. The combustion of PLTU produces combustion residue in the form of fly ash and solid ash. Fly ash has its own problem level compared to solid ash. The issue of air pollution, sources of disease and radioactive pollutants are the negative impacts of fly ash left over from burning coal. Coal ash is formed from compounds that do not burn in the coal combustion process including the presence of rare earth metals (LTJ). LTJ is a valuable element which in certain levels can be processed into valuable goods. Separation of LTJ in coal can reduce the ash content and improve the quality of coal, so it is necessary to know the potential of LTJ contained in coal ash. The coal sample tested was coal from PT Bukit Asam Tanjung Enim Mining Unit. Identification of LTJ elements in the ash at the PLTU using XRD, ICP and SEM analysis. There is element Cerium (Ce) 55.3 ppm in fly ash and 22.6 ppm in bottom ash, element yttrium (Y) 36 ppm in fly ash and 10.7 ppm in bottom ash, element Lanthanum (La) 27.3 ppm on fly ash and 10.5 ppm on bottom ash. Neodymium (Nd) 26.1 ppm in fly ash and 6.9 ppm in bottom ash. Finally, there is an element of Samarium (Sm) 1.4 ppm in fly ash and 0.7 ppm in bottom ash. There is a promising potential for rare earths in coal ash, but for levels below 500 ppm it is still not feasible to manage, so it is necessary to enrich the rare earths first.
Optimasi Desain Geometri Lereng Material Old Dump Pada Usaha Penggalian Ulang Pit X PT. Bukit Asam Tbk: Optimization Of Geometry Design Of Old Dump Material Slopes On The Pit X Re-Excavation Plan Of PT. Bukit Asam, Tbk. Pebrianto, Rosihan; Louisa, Anna Amelia; Harsiga, Edwin; Waristian, Harry
MINERAL Vol 9 No 1 (2024): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v9i1.5298

Abstract

In doing slope design, it is necessary to pay attention to slope geometry and soil shear strength. Determination of slope geometry design also considers the balance between height and slope and production benefits. Research was conducted to analyze slope stability through physical and mechanical properties testing, limit equilibrium, and probabilistic Monte Carlo methods. The surface area of the Overburden stripping area in the 2024 RKP design is 8,172.79 m2. The production target is 2,000,000 tons of coal with a volume of overburden material that must be stripped of 29,000,000 BCM and obtained a Stripping Ratio value of 14.5. The results of the evaluation of the overall slope of the Old Dump material with an overall slope height of 66.582 m, a slope width of 447.69 m, an overall slope of 8.32˚ and a bench width of 25 m, a bench height of 6 m with a comparison ratio of 1:3 and a single slope angle of 18.43˚. Then the redesign was carried out and obtained recommendation results of 64.799 m overall slope height, 303.33 m slope width, 13.02˚ overall slope, and 25 m bench width, bench height at elevation 131-110 of 8 m with a comparison ratio of 1:2, single slope 26.57˚ and at elevation 110-50 of 8 m with a comparison ratio of 1:1.5, single slope 33.69˚.
Co-Authors Ahmad Fauzan Al Hadi, Alex Bochori Bochori Budhi Setiawan Diana Purbasari Eddy Ibrahim Edwin Harsiga Edy Sutriyono Louisa, Anna Amelia Makmur Asyik Marwan Asof Maulana Yusuf Muhammad Amin restu juniah, restu Waristian, Harry Wibowo, Satriya