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All Journal Jurnal Teknologi Mineral dan Batubara IJEMS (Indonesian Journal of Environmental Management and Sustainability) Humantech : Jurnal Ilmiah Multidisiplin Indonesia NUSANTARA: Jurnal Pengabdian Kepada Masyarakat Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) TEKSTUR : Jurnal Teknologi Infrastruktur Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Jurnal Teknik dan teknologi tepat guna Jurnal Pelayanan Masyarakat Solusi Bersama : Jurnal Pengabdian Dan Kesejahteraan Masyarakat
Hisni Rahmi
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Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences Transportation

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Study of Chemical Characteristics of The Lambidaro River for Sustainable Environment Hisni Rahmi; Restu Juniah; Azhar Kholiq Affandi
Indonesian Journal of Environmental Management and Sustainability Vol. 1 No. 1 (2017): December
Publisher : Research Centre of Inorganic Materials and Complexs

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (455.494 KB) | DOI: 10.26554/ijems.2017.1.1.23-26

Abstract

Residents who live along the Lambidaro watershed, generally use river water to meet their daily needs such as bathing, washing and latrines. Around of Lambidaro is a residential and industrial group such as rubber industry, workshop, home industry, and mining. The activities contained along the watershed can lead to an increase in river water pollution load which can be seen from chemical characteristics. Increased pollution loads can cause the river environment to be unsustainable for the community. Sustainable environment means that the environment as a provider of resources for human life is able to maintain its carrying capacity. The purpose of study is to determine the chemical characteristics of river due to sand mining activities for the environment sustainable. This research is using pollution index method with parameter of chemical characteristics measured that is pH, DO, COD, BOD5, Fe, Mn, NH4, Nitrate, and Nitrite. The results of analysis of water chemical characteristics of the river indicate that the part close to estuary of the river is in good condition indicating that the location is environmentally sustainable. Meanwhile, the upstream to the middle river body is in mild contamination condition which means that the river environment has been contaminated.
Utilization Study of Void Mine For Sustainable Environment of The Limestone Mining Sector at PT Semen Baturaja (Persero) Tbk Hisni Rahmi; Didik Susetyo; Restu Juniah
Indonesian Journal of Environmental Management and Sustainability Vol. 3 No. 2 (2019): June
Publisher : Research Centre of Inorganic Materials and Complexs

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (659.828 KB) | DOI: 10.26554/ijems.2019.3.2.54-59

Abstract

Event open-pit mining methods in the exploitation of limestone by PT Semen Baturaja (Persero) Tbk cause depletion of water, air, and soil. At the end of mining activities will leave ex-mine land in the form of void and non void (empty land). Reclamation and Postmining must be carried out by the company according to the mandate of Government Regulation No. 78 year 2010. Reclamation and post-harvest activities on ex-non void mines can be revegetation activities, while void can be used as reservoirs for raw water sources. The aim is to maintain the sustainability of natural resources and water in the limestone mining environment. The research aims to determine the condition of void water produced from limestone mining activities for a sustainable environment. The method used in this study is using the pollution index method. The results showed that the water in the sump inlet and quarry outlet experienced mild pollution. Pollution index at the location of the limestone mine sump inlet worth 2.14 and for oulet quarry worth 2.07. This shows that mine void water is not feasible to be used as raw water, so water treatment needs to be done so that it meets the established quality standards. If void water comply the prescribed quality standards, environmental sustainability in the limestone mining sector can be achieved during during the life of the mine, post mining, until after the post-mining period.
ANALISIS NILAI KEEKONOMIAN PERUNTUKAN LAHAN BEKAS TAMBANG BATUBARA SEBAGAI ASIMILATOR KARBON Yovanda, Ridho; Juniah, Restu; Yulianita, Anna; Anaperta, Yoszi; Rahmi, Hisni
Jurnal Teknologi Mineral dan Batubara Vol 19 No 1 (2023): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No1.2023.1311

Abstract

The environmental issues that usually arise from mining activities are ex-coal mining lands in the form of mine pits (void) and land (non void) which are not managed properly. The company has an obligation to manage ex-coal mining land so that the environment remains sustainable and benefits the community by carrying out reclamation activities. Reclamation of ex-coal mining land by planting oil palm provides benefits in the form of incomes and as a carbon assimilator. This study aims to analyze the economics value of the ex-coal mining land use as a carbon assimilator by using the extended NPV analysis method. The result of analysis revealed a positive extended NPV value of IDR. 1,961,057,020,-, which means that ex-coal mining land can provide positive benefits as a carbon assimilator.
Sosialisasi Potensi Dan Peluang Kerja Di Kabupaten Lima Puluh Kota Nelvi, Afni; Hisni Rahmi; Marlina Amsya, Riam; Fadhly, Ahmad; Nofriadiman Nofriadiman; Elmawati Elmawati; Ervil, Riko; Mariza Syahyuda, Nelsy
NUSANTARA Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 4 (2023): November : Jurnal Pengabdian kepada Masyarakat
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/nusantara.v3i4.1936

Abstract

Based on data from the West Sumatra energy and mineral resources service, it is stated that Limapuluh Kota Regency has the potential for rocks (andesite, granite, limestone, marble) and metallic minerals (gold and lead). This huge natural potential requires good management so that it can develop and requires potential human resources as well. This is the background for socializing opportunities and potential job opportunities in Limapuluh Kota Regency. The socialization explains what potential mining resources exist in Limapuluh Kota Regency along with the job opportunities that exist in managing these resources. The target of this socialization is to open the minds of high school students in terms of the natural potential that their region has and to open up the students' insight in choosing the science they will study in college, so that as sons/daughters of the region they can contribute to the management and development of their region.
KEBUTUHAN DOSIS KAPUR TOHOR DALAM PENETRALAN AIR ASAM TAMBANG KPL PIT 1 TIMUR BANKO BARAT PT BUKIT ASAM M. Randi Al Falah Assyakiri; Hisni Rahmi; Asep Neris
Humantech : Jurnal Ilmiah Multidisiplin Indonesia Vol. 2 No. Spesial Issues 1 (2022): Humantech : Jurnal Ilmiah Multidisiplin Indonesia
Publisher : Program Studi Akuntansi IKOPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32670/ht.v2iSpesial Issues 1.1181

Abstract

Air asam tambang sebelum dialirkan ke badan air perlu dinetralkan terlebih dahulu agar memenuhi baku mutu lingkungan sesuai Kepmen LH 113 tahun 2003. Air dari KPL Pit 1 Timur Banko Barat PT Bukit Asam masih di bawah baku mutu lingkungan dengan pH senilai 4,3. Tujuan penelitian adalah menganalisis jumlah kebutuhan dosis kapur tohor dengan berbagai variasi jumlah. Analisis regresi digunakan untuk mengestimasi kebutuhan dosis kapur tohor yang dibutuhkan. Hasil pengolahan data diperoleh penetralan air asam tambang secara aktual membutuhkan 35 karung/hari atau setara 875 kg pada KPL Pit 1 dengan 7 kolam kompartemen dan 3 titik pengapuran. Nilai pH hasil penetralan dengan menggunakan dosis ini menghasilkan rata-rata pH 4,31 dimana belum memenuhi baku mutu lingkungan berdasarkan Kepmen 113 tahun 2003. Dosis kapur tohor yang dibutuhkan untuk menetralkan pH air asam tambang berkisar antara 0,2152 – 0,9730 gr/liter dalam skala laboratorium dan 1.793,051 kg/hari – 8.107,061 kg/hari atau 72 - 325 karung dalam skala lapangan.
Optimalisasi Pencucian Batubara Kalori Rendah Menggunakan Minyak Pelumas Dan Minyak Tanah Dengan Metode Flotasi Marluga Banjarnahor, Ely; C Eka Putra, Jevie; Rahmi, Hisni
Jurnal Teknik dan Teknologi Tepat Guna Vol. 1 No. 2 (2022): Jurnal Teknik dan Teknologi Tepat Guna
Publisher : Riset Sinergi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62357/j-t3g.v1i2.118

Abstract

PT Golden Great Borneo is classified as having low grade coal with an average calorific value of 4287 kcal/kg. Coal with low calories generally still contains impurities (mineral matter). The purpose of this study was to analyze the effect of the volume of lubricating oil and kerosene, solution pH, and Total Dissolved Solid (TDS) on coal recovery from coal washing using the flotation method. Coal washing uses the flotation method with a mixture of water, lubricating oil, and kerosene to further see the effect of pH, TDS on recovery. In testing lubricating oil and kerosene on recovery, coal from washing using the flotation method resulted in optimum recovery at a variation of 40:40 ml with a feed of 50 grams, the value of recovery was 92.4% and the correlation value between these two variables was sufficient, namely 0.35. While the results of the effect of pH and TDS on recovery by the flotation method, the optimum value in the variation of 40:40 ml with a pH value of 7 at the correlation value between these two variables is sufficient, namely 0.35 and TDS is known to be the optimum recovery result in a variation of 40: 40 ml with TDS value of 0.32 mg/l on the correlation value between these two variables is sufficient, namely 0.35.
Optimalisasi Produktivitas Alat Gali Muat dan Alat Angkut Menggunakan Metode Quality Control Circle (QCC) untuk Mencapai Target Produksi Batu Andesit pada PT. Pebana Adi Sarana Angga Saputra; Ahmad Fadhly; Hisni Rahmi; Zella Navtalia; Diah Wully Agustine
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 2 No. 4 (2024): Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v2i4.679

Abstract

PT. Pebana Adi Sarana targets monthly production operations of 20,000 tons/month while actual production is only around 15,000 tons/month, which means that the production target has not been achieved. The factors that cause the failure to achieve the production operation target can be due to ineffective equipment performance, Low equipment performance is one of the things that cause production not to be achieved, so it needs to be studied. The purpose of the study to be achieved is to analyze the actual productivity of loading and unloading equipment and transportation equipment after repairs and conduct improvement analysis using the Quality Control Circle (QCC) method. The data taken for the research is in the form of Excavator and dump truck cycle time data, effective working time, tool specifications. The actual productivity of loading and unloading equipment and transportation equipment at PT. Pebana Adi Sarana for dump trucks of 19,146 tons/month. trucks are 16,351 tons/month while for the Quality Control Circle (QCC) method. The company only needs to carry out the number of tools needed for 3 units of Scania p380 dump trucks and 1 unit of komatsu PC 300 excavator with a production of 21,295 tons/month has exceeded the production target set by the company.
Implementasi Sistem Wisata Terintegrasi Dengan Event Lomba Lintas Alam Wisata Nasional Di Kawasan Geopark Equator Pasaman Ahmad Fadhly; Riam Marlina Amsya; Hisni Rahmi; Afni Nelvi; Riko Ervil; Elmawati Elmawati; Vina Lestari Riyandini; Yudi Arista Yulanda
Solusi Bersama : Jurnal Pengabdian dan Kesejahteraan Masyarakat Vol. 1 No. 2 (2024): Mei : Solusi Bersama : Jurnal Pengabdian dan Kesejahteraan Masyarakat
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/solusibersama.v1i2.175

Abstract

The Equator Pasaman Geopark area, with its natural beauty and cultural diversity, is a potential destination to be developed. Equator Pasaman Geopark is a geopark located in West Sumatra, Indonesia, which combines geological, biological, and cultural diversity. In addition to being an attractive tourist destination, this geopark also plays a role in the preservation of nature and culture, as well as sustainable local economic development. The uniqueness of the geopark, such as its location on the equator line, national history with the figure of Tuanku Imam Bonjol, and biodiversity, make it a valuable asset for tourism promotion and environmental education. Service activities were carried out at the National Cross Tourism Competition (LAWNAS). The purpose of this community service activity is the promotion of geoparks, environmental promotion, cultural preservation, local economic development, increasing tourism, and external party partnerships. The research method is to identify service to the integrated tourism system, then organize competitions, as well as promotion and marketing of geotourism and finally environmental education and conservation. The parties involved in this activity include local governments, communities, and community service teams. The results of this community service activity show that all contribute and are actively involved in this activity, thus making a positive contribution to the development of local tourism
Kajian Teknis Daya Dukung Tanah untuk Menentukan Kapasitas Optimum Stockpile Utama PT Putra Muba Coal Zella Navtalia; Hisni Rahmi; Muhammad Faisal Seprizal; Diah Wully Agustine; Dimas Agung Permadi; Andy Yanottama
JURAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 1 (2025): April : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i1.4777

Abstract

Settlement of the ground floor of stockpile is caused by ground pressure of coal pile which is bigger than stockpile floor bearing capacity leads to bury under of some coal. So it is needed to do a study of optimum capacity by stockpile floor bearing capacity. Study of stockpile optimum capacity is started by calculating Californian Bearing Ratio (CBR) of stockpile subgrade using dynamic cone penetrometer in some location on each of the stockpile compartment. CBR value of stockpile subgrade converted into bearing ratio, so the maximum tonage of stockpile can be known. By considerating of pile height, angle of repose of low grade coal, monthly production target, and the road geometry for mechanical equipment access purpose, the optimum capacity of PT Putra Muba Coal stockpile is 198.549,95 ton, which divided into seven coal piles.
Pemanfaatan Tanaman Kiambang sebagai Agen Fitoremediasi untuk Penetralan Air Asam Tambang Hisni Rahmi; Restu Permana; Nelsy Mariza Syahyuda; Restu Juniah
JURAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 2 (2025): Agustus : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i2.5548

Abstract

The pH value parameter in the mineral acid water of a coal mining company in South Sumatra is below the set environmental quality standards. The results of measuring the pH value using a pH meter at the inlet are 4.9 which is still below the environmental quality standard of 6-9. Therefore, it is necessary to make efforts to manage the environment before water is discharged into water bodies, one of which is by utilizing kiambang plants as phytoremediation agents in neutralizing mine acid water. This study aims to analyze changes in mine acid water quality and analyze the effectiveness of mine acid water neutralization. The initial quality of mine acid water for pH parameters was 4.9 TDS of 376 mg/l, Fe of <0.1 mg/l, and Mn of 3 mg/l. After the phytoremediation process, the water quality change for pH parameters was 6.6 and Mn was 0.05 mg/l. The neutrality effectiveness of mine acid water increased the pH by 34.69% and the effectiveness of reducing Mn levels by 98.33%. This kiambang plant can be a recommendation for phytoremediation agents for companies considering its availability around the company
Co-Authors Afni Nelvi Ahmad Fadhly Anaperta, Yoszi Andy Yanottama Angga Saputra Anna Yulianita Azhar Kholiq Affandi C Eka Putra, Jevie Diah Wully Agustine Didik Susetyo Dimas Agung Permadi Elmawati Elmawati Ervil, Riko Fadhly, Ahmad M. Randi Al Falah Assyakiri Mariza Syahyuda, Nelsy Marluga Banjarnahor, Ely Muhammad Faisal Seprizal Nelsy Mariza Syahyuda Nelvi, Afni Nofriadiman, Nofriadiman Restu Juniah restu juniah, restu Restu Permana Riam Marlina A Ridho Yovanda Riko Ervil Rosihan Febrianto Situmorang, Boyman Syaifudin Zakir Vina Lestari Riyandini Yudi Arista Yulanda Yuli Andriani Zella Navtalia