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Muhammad Ikrar Lagowa
Fakultas Sains Dan Teknologi - Universitas Jambi
Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Mathematics Physics Public Health

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Journal : Jurnal Teknologi Mineral dan Batubara

 1 
PEMULIHAN KUALITAS TANAH BEKAS TAMBANG BATUBARA MELALUI PENANAMAN Desmodium ovalifolium Gindo Tampubolon; Itang Ahmad Mahbub; Muhammad Ikrar Lagowa
Jurnal Teknologi Mineral dan Batubara Vol 16, No 1 (2020): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2020
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol16.No1.2020.997

Abstract

Penutupan permukaan tanah dengan tanaman penutup (cover crop) merupakan salah satu langkah penting dalam pemulihan kualitas tanah bekas tambang batubara. Desmodium ovalifolium merupakan salah satu jenis tanaman penutup tanah (land cover crop) dari famili Leguminosae yang tidak menjalar dan melilit. Hasil analisis tanah bekas tambang batubara pada penelitian sebelumnya menunjukkan bahwa tanah tersebut memiliki tingkat kemasaman tinggi (pH 3,6 - 4,2) dan kandungan hara sangat rendah (P- total 3,63 mg/100g). Dalam mengoptimalkan pertumbuhan D. ovalifolium pada kondisi tanah seperti demikian perlu dilakukan perbaikan lingkungan tumbuh (pH, P-tersedia dan ketersediaan unsur hara tanaman). Salah satu upaya perbaikan tanah adalah melalui pemberian kapur dolomit dan pupuk fosfat. Penelitian ini bertujuan untuk mempelajari pengaruh dosis kapur dolomit dan pupuk fosfat terhadap kemampuan D. ovalifolium dalam menutupi permukaan tanah dan menyumbang unsur hara N, P, K dan bahan organik pada tanah bekas tambang batubara. Penelitian ini menggunakan Rancangan Acak Kelompok dengan 12 perlakuan. Hasil penelitian menunjukkan bahwa kualitas tanah terbaik didapat pada pemberian 95,15 g dolomit dan 5 g Trisodium Phosphate Powder (TSP) per lubang tanam. Perlakuan tersebut mampu meningkatkan pH tanah dari 4,57 menjadi 6,5, menghasilkan berat kering pangkasan D. ovalifolium umur 3,5 bulan sebanyak 2149,84 kg/ha (2,15 ton/ha), 1961,73 kg/ha bahan organik, 41,66 kg/ha N, 6,32 kg/ha P dan 21,05 kg /ha K dengan persentase penutupan lahan 73.08 %.
PENGELOLAAN AIR LIMBAH TAMBANG DENGAN METODE BIOADSORBSI MENGGUNAKAN KARBON AKTIF TEMPURUNG KELAPA Niza Desiana; Ngatijo Ngatijo; Mohammad Ikrar Lagowa
Jurnal Teknologi Mineral dan Batubara Vol 18, No 2 (2022): Jurnal Teknologi Mineral dan Batubara Edisi Mei 2022
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol18.No2.2022.1175

Abstract

Air limbah tambang merupakan dampak dari kegiatan penambangan. Salah satu metode pengelolaan air limbah tambang yang belum banyak dikaji adalah bioadsorbsi menggunakan karbon aktif tempurung kelapa. Penelitian ini bertujuan mengetahui pengaruh bioadsorbsi karbon aktif tempurung kelapa terhadap pH, Fe, Mn dan TSS pada air limbah tambang. Digunakan metode eksperimen dengan 2 variabel, yaitu konsentrasi karbon aktif dan waktu kontak. Dari hasil penelitian didapatkan bahwa karbon aktif tempurung kelapa yang diaktivasi H3PO4 20%, mengandung unsur karbon sebesar 98,20%, air 9,75%, zat menguap 20,52%, abu 10,02% dan karbon terikat 69,46 %. Hasil optimal peningkatan pH didapatkan pada konsentrasi karbon aktif 5 g/L dengan waktu kontak 10 menit yaitu pH 7,01. Penurunan konsentrasi Fe dan Mn yang terbaik diperoleh ketika menggunakan karbon aktif 5 g/L dan waktu kontak 60 menit dan 20 menit sehingga didapatkan konsentrasi Fe 0,3570 mg/L dan Mn 0,0344 mg/L serta penurunan TSS yang optimal menjadi 0,078 mg/L. Karbon aktif tempurung kelapa terbukti mampu meningkatkan pH serta menurunkan konsentrasi Fe, Mn dan kadar TSS sehingga dapat dijadikan salah satu alternatif pengelolaan air limbah tambang.
OPTIMASI DOSIS PUPUK NPK DAN ASAM HUMAT DALAM MEMPERBAIKI KUALITAS TANAH BEKAS TAMBANG BATUBARA DAN PERTUMBUHAN SENGON SOLOMON Tampubolon, Gindo; Lagowa, Muhammad Ikrar; Simarmata, Jhoy Michael; Sitanggang, Boy Julius
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1365

Abstract

Solomon Sengon (Paraserianthes mollucana (Miq.) Barneby & J.W. Grimes) is a plant species in land reclamation activities for former coal mines. This is because Solomon sengon has advantages including: very fast growth, adaptive to extreme environments, and quite high economic and ecological values. Former coal mining soils are generally degraded and have low organic matter content, essential nutrient availability, CEC, and base saturation. These conditions do not support optimal plant growth. The aim of this study was to examine the effect of NPK plus humic acid fertilizer on several soil chemical properties and the growth of the Solomon sengon plant. This research was carried out in the coal mining concession area in Amplelu Mudo Village, Tembesi District, Batang Hari Regency, Jambi Province. The study used a randomized block design (RBD) with doses of NPK plus humic acid fertilizer in 9 levels and repeated 3 times, so there were 27 plots or experimental units. The observed variables were: pH, Al-dd, available-P, K-dd, height increase, diameter increase and root dry weight. The results showed that the application of NPK fertilizer 100 g plus humic acid 20 g/plant hole (P5) was the best treatment in improving soil K-dd with an increase in plant height of 110.83 cm, diameter of 28.65 mm and BKA of 10.63 g , there was an increase in the height of the Solomon sengon plant by 101.21%, diameter by 65.13% and BKA by 75.12% compared to the administration of 50 g NPK plus 10 g humic acid (P1). Increasing the dose of NPK and humic acid from 50 g of NPK plus 10 g of humic acid to 100 g of NPK and 20 g of humic acid has the potential to significantly increase the growth of the Solomon sengon plant.
EVALUASI KINERJA JIG TIPE PAN AMERICAN TERHADAP RECOVERY TIMAH HASIL PENCUCIAN BIJIH TIMAH PADA KAPAL ISAP PRODUKSI (KIP) TIMAH 17 DI LAUT TEMPILANG KABUPATEN BANGKA BARAT, PROVINSI BANGKA BELITUNG Abror, Muhammad; Lagowa, Muhammad Ikrar; Hakim, Muhammad El
Jurnal Teknologi Mineral dan Batubara Vol 20 No 3 (2024): Jurnal Teknologi Mineral dan Batubara Edisi September 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No3.2024.1589

Abstract

The early stage of mineral processing usually focuses mainly on recovery, not the grade of the concentrate. Tin dressing in Production Section Vessel on January 2023 did not meet target recovery of 96%. This study aimed to evaluate and optimize jig performance to achieve the desired target. The study focused on evaluating the configuration of variables such as feed velocity, bed thickness, as well as number and length of strokes. Measurement data of jig performance variables and tailings and concentrate samples were used as comparative data to the SOP. The calculation of the sample content was carried out through the grain counting analysis (GCA) method, which calculated the amount of concentrate and losses in each jig. The final results of washing recovery prior to washing evaluation were 92.70% Sn in observation I and 88.68% Sn in observation II, respectively. The washing process in observation I and II conditions were not considered optimal because the recovery had not reached the target. This is caused by variables that are not under the provisions To optimize the performance of the jig was the installation a comb in the flow section of the jig to standardize the flow that was too fast, remeasurement after the addition of the hematite stone, repairing pillow blocks and eccentric coupling bolts on the stroke length setting and resetting the variables in the jig performance following existing SOPs. After the evaluation and readjustment of the jig variables, the recovery was increased to 97.53% Sn. From this study it can be concluded that the failure to achieve the targeted recovery was caused by operational variables that did not meet the SOP including the length and number of strokes, bed thickness, and water flow rate due to technical constraints. After being repaired, the dressing recovery could meet or even exceed the recovery target.
Co-Authors Aditya Denny Prabawa B. Adhitya Denny Prabawa, Aditya Dwi Tata Damayanti Faizar Farid Faizar Farid Faizar Farid Gindo Tampubolon Gindo Tampubolon Gindo Tampubolon Hakim, Muhammad El Itang Ahmad Mahbub J. Wiratama Lucky Zaehir Maulana Lutfi Wahyudi Luthfi Wahyudi Megakusuma, Yosha Muhammad Abror Ngatijo Ngatijo Niza Desiana Putra, Tommi Mandala Revis Asra Sartika . Simarmata, Jhoy Michael Sitanggang, Boy Julius Wahyudi Zahar Wahyudi, Lutfi Wiratama, Jarot Y. Megasukma Yosa Megasukma Yosha Megakusuma Yudi Arista Yulanda Zahar, Wahyudi