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Rencana Reklamasi Pit Lake Tambang melalui Konsep Budidaya Padi Apung menuju Food Security di Era VUCA Arofah, Nurmaya; Sofatunida, Sofatunida
TheJournalish: Social and Government Vol. 4 No. 5 (2023): Special Issue
Publisher : CV The Journal Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55314/tsg.v4i5.610

Pertanian merupakan salah satu sektor yang dijadikan sebagai energi utama dan hal yang vital dalam penyediaan bahan pangan di Indonesia. Namun, saat ini penyusutan luas areal pertanian di Indonesia terus terjadi akibat semakin meningkatnya jumlah penduduk Indonesia dan juga adanya alih fungsi lahan ke non-pertanian. Tujuan penelitian ini adalah memberikan inovasi terkait permasalah penyempitan lahan, dengan menggunakan konsep budidaya padi terapung yang memanfaatkan lahan bekas tambang pasir dan kerikil di Kecamatan Rumpin, Kabupaten Bogor, Provinsi Jawa Barat. Rencana reklamasi dengan konsep budidaya padi apung yaitu bentuk adaptasi terhadap ketersediaan lahan persawahan yang semaakin terdegradasi. Dimana bibit padi ditanam diatas rakit dengan jarak 30 x 30 dan dengan menggunakan pupuk organik. Penelitian ini dilakukan dengan metode kualitatif, sumber data yang digunakan yaitu sumber data primer dan sekunder yang diperoleh dari tahapan pengumpulan data, selanjutnya dianalisis, proses analisis ini terdiri dari tahapan reduksi, penggabungan, dan konklusi. Hasil penelitian didapatkan data uji laboratorium berdasarkan 6 parameter yaitu TDS sebesar 60 mg/h, EC 130 , Ph 7.1, Suhu 31.2 , Salinitas 0.5 % dan Turbidity 1.958 FTU. Sehingga berdasarkan pengujian menggunakan alat Water Quality Tester, Turbidimeter dan Refractometer, sampel air pit lake tambang masuk ke dalam golongan D, yang bisa digunakan untuk pertanian.

Phytoremediation of Mercury and Cyanide Contaminated Soils by Physic Nut (Jatropha curcas L.) and Citronella Grass (Cymbopogon nardus) A. Silvan Erusani; Nurmaya Arofah; Fabika Azahra; Nurhasni Nurhasni; Titik Inayah
Jurnal Ilmu Lingkungan Vol 22, No 6 (2024): November 2024
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.22.6.1581-1593

Mercury and cyanide are compounds that have the potential to pollute the environment, both of which are found in the tailing waste of artisanal and small-scale gold mining (ASGM). The purpose of this study was to determine the ability of physic nut (Jatropha curcas L.) and citronella grass (Cymbopogon nardus) to absorb mercury and cyanide in soils polluted with tailings waste based on the value of transfer factors. During this research stage, the remediation of soil polluted with amalgamation tailings and cyanide tailings was carried out for 28 days. Soil sampling was carried out every seven days for 28 days, while root and leaf sampling was carried out on day 28, analysis of mercury and cyanide content in soil and plants using atomic absorption spectroscopy (AAS) and UV-visible spectrophotometer. After 28 days of remediation, mercury and cyanide levels may decrease in soil by 93.7% for mercury and 81.8% for cyanide. The decrease can be caused by absorption and accumulation in plants, where mercury and cyanide accumulate more in physic nut than citronella grass. Physic nut and citronella grass have a transfer factor value of <1 for mercury and cyanide, so they are an excluder plant, except for the accumulation of mercury in physic nut from cyanide tailings soil, which has a transfer factor value of >1, which is an accumulator plant.

ANALISIS BALIK LONGSORAN PADA LERENG HIGHWALL PT FAJAR SAKTI PRIMA, KALIMANTAN TIMUR Prasasti, Genta; Kusumaningsih, Dewi Ayu; Arofah, Nurmaya
Jurnal Inovasi Pertambangan dan Lingkungan Vol 4, No 1 (2024): Jurnal Inovasi Pertambangan dan Lingkungan
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jipl.v4i1.41786

Adanya kelongsoran yang terjadi pada lereng highwall pit FSP F34 Timur PT Fajar Sakti Prima, menyebabkan akses jalan menjadi terganggu. Keadaan ini mengharuskan Perusahaan untuk melakukan kajian analisis balik terhadap longsor, sehingga lereng kembali stabil. Tujuan penelitian yaitu melakukan analisis balik lereng untuk mendapatkan nilai parameter batuan pada saat longsor dan mendapatkan rekomendasi lereng yang aman sesuai dengan parameter hasil analisis balik. Dalam penelitian ini dilakukan analisis balik dengan cara mengurangi nilai parameter batuan seperti kohesi (c) dan sudut geser dalam (Φ) hingga kondisi lereng labil (FK ≤ 1). Nilai c dan Φ yang dihasilkan diasumsikan sebagai kondisi lereng saat longsor, kemudian hasil dilakukan analisis kestabilan lereng untuk rekomendasi geometri lereng yang aman. Analisis kestabilan lereng menggunakan metode kesetimbangan batas. Hasil rekomendasi geometri lereng, yaitu: tinggi single slope 10 m, sudut single slope 58º, tinggi overall slope 50 m, sudut overall slope 37º serta lebar bench 5 m. Dengan nilai FK dinamis sebesar 1,16; PF 0,00%. Sedangkan nilai FK statis sebesar 1,42; PF 0,00%, dengan geometri tinggi single slope 10 m, sudut single slope 50º, tinggi overall slope 50 m, sudut overall slope 33º serta lebar bench 5 m. Keduanya dikategorikan sebagai nilai yang stabil menurut Kepmen 1827 tahun 2018.

Studi Fitoremediasi Merkuri Pada Tailing Amalgamasi Penambangan Emas Rakyat Menggunakan Akar Wangi (Vetiveria zizanioides L.) Arofah, Nurmaya; Erusani, A. Silvan; Azahra, Fabika
Dinamika Lingkungan Indonesia Vol 11, No 1 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/dli.11.1.p.23-32

Heavy metal pollution in the soil has become a global problem along with the industrialization process, mining, and laboratory activities, as well as daily activities. Artisanal and small-scale gold mining (ASGM) activities using amalgamation methods have the potential to pollute the environment because they produce tailings with mercury (Hg) metal content, which causes various environmental problems even though they are in very low concentrations. The purpose of this study was to determine the characteristics of tailings polluted with Hg metal, determine Hg levels in soils that have been absorbed by Vetiveria zizanioides, determine the effect of compost addition on soil quality improvement, and determine the factor of mercury transfer from soil to plants. The results showed that the mercury concentration in amalgamation tailings of 201.6 mg/kg may decrease after 28 days of remediation to 13.72 mg/kg at TTG1, 170.73 mg/kg at TTG2, and 53.4 mg/kg at TTG3. The ability of Vetiveria zizanioides L. to absorb mercury in amalgamated tailings without adding compost can be seen from the TTG1 transfer factor value of 9.69.

Analysis of Illegal Gold Mining (PETI) Impact on The Environment with TDS, TSS, Mercury and Cyanide Parameters in Water and Sediment of Cikaniki River Erusani, Awang Silvan; Arofah*, Nurmaya; Sofatunida, Sofatunida; Fauzi, Talitha Hasna; Jabbar, Muhammad Andi
Aceh International Journal of Science and Technology Vol 14, No 1 (2025): April 2025
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.14.1.43432

Gold production from artisanal mining extraction reaches 120 tons annually, providing significant environmental and economic impacts for the community. The processing method used triggers environmental pollution, because it produces tailings in the form of metal mercury and cyanide. This research was conducted at the location of post Illegal gold mining (PETI), although PETI activities have been disciplined, but based on the characteristics of mercury which is difficult to dissolve in water, easily binds to suspended solids and easily deposited to the bottom of the waters, can pollute river sediments. The purpose of the study was to determine the levels of Total Dissolved Solid (TDS), Total Suspended Solid (TSS), mercury and cyanide in the Cikaniki River Watershed, based on Government Regulation No. 22 of 2021. The purposive sampling method was used in determining the sampling location at 3 observation stations for surface water and sediment, namely station 1 area where is former gold processing. Station 2 river body where former PETI produces mercury waste, station 3 is a place where there is no gold processing. TDS and TSS measurements using the gravimetric method, mercury and cyanide levels using ICP-OES. The results of laboratory sediment analysis of 3 observation location in Cisarua Village, Curug Bitung Village, and Lukut Village, for the TDS and TSS parameters, mercury was detected at the highest level at point 3 in Lukut Village. Luku Village is the most downstream location of the Cikaniki River which is located very far form the peoples gold processing site. This concludes that after PETI activities occur, the distribution of mercury (Hg) waste spread to the most downstream areas of the Cikaniki River is always present even though its presence is still below environmental quality standards.

ANALISIS BALIK LONGSORAN PADA LERENG HIGHWALL PT FAJAR SAKTI PRIMA, KALIMANTAN TIMUR Prasasti, Genta; Kusumaningsih, Dewi Ayu; Arofah, Nurmaya
Jurnal Inovasi Pertambangan dan Lingkungan Vol. 4 No. 1 (2024): Jurnal Inovasi Pertambangan dan Lingkungan
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jipl.v4i1.41786

Adanya kelongsoran yang terjadi pada lereng highwall pit FSP F34 Timur PT Fajar Sakti Prima, menyebabkan akses jalan menjadi terganggu. Keadaan ini mengharuskan Perusahaan untuk melakukan kajian analisis balik terhadap longsor, sehingga lereng kembali stabil. Tujuan penelitian yaitu melakukan analisis balik lereng untuk mendapatkan nilai parameter batuan pada saat longsor dan mendapatkan rekomendasi lereng yang aman sesuai dengan parameter hasil analisis balik. Dalam penelitian ini dilakukan analisis balik dengan cara mengurangi nilai parameter batuan seperti kohesi (c) dan sudut geser dalam (Φ) hingga kondisi lereng labil (FK ≤ 1). Nilai c dan Φ yang dihasilkan diasumsikan sebagai kondisi lereng saat longsor, kemudian hasil dilakukan analisis kestabilan lereng untuk rekomendasi geometri lereng yang aman. Analisis kestabilan lereng menggunakan metode kesetimbangan batas. Hasil rekomendasi geometri lereng, yaitu: tinggi single slope 10 m, sudut single slope 58º, tinggi overall slope 50 m, sudut overall slope 37º serta lebar bench 5 m. Dengan nilai FK dinamis sebesar 1,16; PF 0,00%. Sedangkan nilai FK statis sebesar 1,42; PF 0,00%, dengan geometri tinggi single slope 10 m, sudut single slope 50º, tinggi overall slope 50 m, sudut overall slope 33º serta lebar bench 5 m. Keduanya dikategorikan sebagai nilai yang stabil menurut Kepmen 1827 tahun 2018.

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