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Soil Layers Properties of a Profile Developed on the Past Depositional Series on Merbabu Volcano Central Java Indonesia Nurcholis, Mohammad; Herlambang, Susila; Suwartikaningsih, Sri Aminah; Fiantis, Dian; Yudiantoro, Dwi Fitri
JOURNAL OF TROPICAL SOILS Vol. 24 No. 2: May 2019
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2019.v24i2.53-63

A wide and deep soil profile (around 1200 cm) was observed at Ketep Park West Slope of Merbabu volcano Central Java, Indonesia to identify the soil morphology, physical and, chemical and mineralogical properties.Â Results showed that several soil development processes occurred in each volcanic deposits with different characteristics.Â Most soil layers met some of andic soil properties criteria such bulk density <0.9 g.cm-3, P retention of >85%, and (Alo + Â½ Feo) >2.0%.Â A thin melanic material showing black color layer was found at the lower part of the soil profile, i.e. in depth from 726 to 798 cm.Â The dominant material in most soil layers is an allophane.Â Minerals in the sand fraction were dominated by labradorite and augite, with some layers were hypersthene and green hornblende.

EVALUASI PENERAPAN SISTEM SETTLING POND DALAM PENGELOLAAN AIR ASAM TAMBANG DI PT INTERNASIONAL PRIMA COAL SAMARINDA KALIMANTAN TIMUR Subagja, Muhammad Rafif Riefanto; Nurcholis, Mohammad; Ardiansyah, Yudi; Dirja, Surya
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13947

PT Internasional Prima Coal is a coal mining company utilizing open-pit mining methods, which has the potential to generate acid mine water that can be environmentally damaging if discharged directly into rivers. Hence, the necessity for management, one of which includes the use of settling ponds. The research aims to understand the application of the settling pond system in acid water management and determine the quality of acid mine water and sediment from the inlet to the outlet zones of settling ponds 01 and 08. The research employed survey and laboratory analysis methods. Sampling of acid mine water utilizes grab sampling techniques, while sediment sampling utilizes a core sampler. Parameters used for acid mine water and sediment samples included pH of water, sediment pH (H2O, KCl), Eh, TSS, Fe, Mn, Pb, and Cd levels. Determination of acid mine water quality referred to the East Kalimantan Regional Regulation No. 2 of 2011 concerning the Quality Standards of Coal Industry Wastewater, specifically for pH, TSS, Fe, and Mn, and Minister of State for the Environment Decision No. KEP-51/MENLH/10/1995 for Pb and Cd. Sediment quality referenced the Guidelines for the Protection and Management of Aquatic Sediment Quality in Ontario. The research results indicate that acid mine water and sediment generated by mining activities exhibit characteristics of Fe, Mn, Pb, Cd, and TSS meeting the quality standards but possess low pH values (acidic), especially in Settling Pond 01. Acid mine water that underwent treatment experienced an increase in quality, making it safe for discharge into water bodies. The water flow rate requiring treatment in Settling Pond 01 is 1.110 m3/s sourced from rainwater, runoff, while Settling Pond 08 is 0.704 m3/s from rainwater, runoff, and pumping from the mine's sump pit.

KAJIAN TINGKAT PERKEMBANGAN DAN KLASIFIKASI TANAH PADA TOPOSEKUEN LERENG SELATAN GUNUNGAPI MERAPI DI DESA BALERANTE, KECAMATAN KEMALANG, KABUPATEN KLATEN Putri, Istimawati Rizki Marga; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13949

Topography is one factor that influences the pedogenic process. Balerante Village, Kemalang Subdistrict located on The Southern Slope of Merapi Volcano at an altitude between 680-2760 meters above sea level (masl) and frequently experiences topographical changes due to lava flows or eruptions. This research aims to study the level of soil development and to classify the soil based on classification systems of Soil Taxonomy, World Referense Base, and National Soil Classification. The method used in this research is a field survey by determining the location of the soil profile using a purposive sampling method based on the difference in altitude and overlaying Soil Type Maps, Contour Maps, and Slope Maps. Observations in the field include soil morphology and landscape, and analysis of the physical and chemical properties of the soil in the laboratory. The results showed that the three profiles 1129, 881, and 778 masl had diagnostic horizons: umbric epipedons and cambic endopedons. The soil development is at an intermediate stage. Soil classification at 1129 masl according to the USDA Soil Taxonomy is Andic Humudepts; according to WRB is Cambisols Andic; according to the National Soil Classification is the District Cambisol. Soil classification at 881 masl according to the USDA Soil Taxonomy is Acrudoxic Hapludands; according to WRB is Andosols Cambic; according to the National Soil Classification is Umbric Andosol. Soil classification at 778 masl according to the USDA Soil Taxonomy is Andic Humudepts; according to WRB is Cambisols Andic; according to the National Soil Classification is District Kambisols.

Ability of Sandy Soil to Retain Water in Various Coastal Sand Land Management Practices in Bugel Village, Kulon Progo Regency: Kemampuan Lahan Pasir Menahan Air pada Berbagai Praktik Pengelolaan Lahan di Desa Bugel Kabupaten Kulon Progo Tri Nursasomo, Muhammad; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15262

The reduction of agricultural land due to land conversion has compelled farmers to explore alternative cultivation areas such as coastal sandy soils, despite their limited water retention capacity. Agricultural land in Bugel Village, Kulon Progo Regency, is predominantly composed of sand and exhibits various land management practices. This study aims to analyze the influence of land management strategies on the water retention capacity of coastal sand soils and to identify related soil properties. Soil samples were collected through purposive sampling based on land use maps and direct observation, resulting in three sampling locations that represent different land management practices. Descriptive statistical methods were employed, and the data were analyzed using Analysis of Variance (ANOVA) followed by the Duncan Multiple Range Test (DMRT). The results showed a significant difference in permanent wilting point moisture content (P < 0.01), available moisture content (P < 0.05), and air-dried moisture content (P < 0.05). These findings underscore the importance of appropriate land management in enhancing the water-holding capacity of coastal sandy soils.

EVALUASI PENERAPAN SISTEM SETTLING POND DALAM PENGELOLAAN AIR ASAM TAMBANG DI PT INTERNASIONAL PRIMA COAL SAMARINDA KALIMANTAN TIMUR Subagja, Muhammad Rafif Riefanto; Nurcholis, Mohammad; Ardiansyah, Yudi; Dirja, Surya
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13947

PT Internasional Prima Coal is a coal mining company utilizing open-pit mining methods, which has the potential to generate acid mine water that can be environmentally damaging if discharged directly into rivers. Hence, the necessity for management, one of which includes the use of settling ponds. The research aims to understand the application of the settling pond system in acid water management and determine the quality of acid mine water and sediment from the inlet to the outlet zones of settling ponds 01 and 08. The research employed survey and laboratory analysis methods. Sampling of acid mine water utilizes grab sampling techniques, while sediment sampling utilizes a core sampler. Parameters used for acid mine water and sediment samples included pH of water, sediment pH (H2O, KCl), Eh, TSS, Fe, Mn, Pb, and Cd levels. Determination of acid mine water quality referred to the East Kalimantan Regional Regulation No. 2 of 2011 concerning the Quality Standards of Coal Industry Wastewater, specifically for pH, TSS, Fe, and Mn, and Minister of State for the Environment Decision No. KEP-51/MENLH/10/1995 for Pb and Cd. Sediment quality referenced the Guidelines for the Protection and Management of Aquatic Sediment Quality in Ontario. The research results indicate that acid mine water and sediment generated by mining activities exhibit characteristics of Fe, Mn, Pb, Cd, and TSS meeting the quality standards but possess low pH values (acidic), especially in Settling Pond 01. Acid mine water that underwent treatment experienced an increase in quality, making it safe for discharge into water bodies. The water flow rate requiring treatment in Settling Pond 01 is 1.110 m3/s sourced from rainwater, runoff, while Settling Pond 08 is 0.704 m3/s from rainwater, runoff, and pumping from the mine's sump pit.

KAJIAN TINGKAT PERKEMBANGAN DAN KLASIFIKASI TANAH PADA TOPOSEKUEN LERENG SELATAN GUNUNGAPI MERAPI DI DESA BALERANTE, KECAMATAN KEMALANG, KABUPATEN KLATEN Putri, Istimawati Rizki Marga; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13949

Topography is one factor that influences the pedogenic process. Balerante Village, Kemalang Subdistrict located on The Southern Slope of Merapi Volcano at an altitude between 680-2760 meters above sea level (masl) and frequently experiences topographical changes due to lava flows or eruptions. This research aims to study the level of soil development and to classify the soil based on classification systems of Soil Taxonomy, World Referense Base, and National Soil Classification. The method used in this research is a field survey by determining the location of the soil profile using a purposive sampling method based on the difference in altitude and overlaying Soil Type Maps, Contour Maps, and Slope Maps. Observations in the field include soil morphology and landscape, and analysis of the physical and chemical properties of the soil in the laboratory. The results showed that the three profiles 1129, 881, and 778 masl had diagnostic horizons: umbric epipedons and cambic endopedons. The soil development is at an intermediate stage. Soil classification at 1129 masl according to the USDA Soil Taxonomy is Andic Humudepts; according to WRB is Cambisols Andic; according to the National Soil Classification is the District Cambisol. Soil classification at 881 masl according to the USDA Soil Taxonomy is Acrudoxic Hapludands; according to WRB is Andosols Cambic; according to the National Soil Classification is Umbric Andosol. Soil classification at 778 masl according to the USDA Soil Taxonomy is Andic Humudepts; according to WRB is Cambisols Andic; according to the National Soil Classification is District Kambisols.

Ability of Sandy Soil to Retain Water in Various Coastal Sand Land Management Practices in Bugel Village, Kulon Progo Regency: Kemampuan Lahan Pasir Menahan Air pada Berbagai Praktik Pengelolaan Lahan di Desa Bugel Kabupaten Kulon Progo Tri Nursasomo, Muhammad; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15262

The reduction of agricultural land due to land conversion has compelled farmers to explore alternative cultivation areas such as coastal sandy soils, despite their limited water retention capacity. Agricultural land in Bugel Village, Kulon Progo Regency, is predominantly composed of sand and exhibits various land management practices. This study aims to analyze the influence of land management strategies on the water retention capacity of coastal sand soils and to identify related soil properties. Soil samples were collected through purposive sampling based on land use maps and direct observation, resulting in three sampling locations that represent different land management practices. Descriptive statistical methods were employed, and the data were analyzed using Analysis of Variance (ANOVA) followed by the Duncan Multiple Range Test (DMRT). The results showed a significant difference in permanent wilting point moisture content (P < 0.01), available moisture content (P < 0.05), and air-dried moisture content (P < 0.05). These findings underscore the importance of appropriate land management in enhancing the water-holding capacity of coastal sandy soils.

The Effect of Purun Tikus (Eleocharis dulcis) and Organic Material Addition in Constructed Wetland Systems on the Improvement of Acid Mine Drainage Quality Simamora, Eprilia; Nurcholis, Mohammad; Ardian, Aldin; Ernawati, Rika; Winarno, Eddy
Jurnal Mineral, Energi dan Lingkungan Vol 8 No 2 (2024): Jurnal Mineral, Energi dan Lingkungan Volume 8, No. 2 Tahun 2024
Publisher : Universitas Pembangunan Nasional (UPN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmel.v8i2.14694

Coal mining activities often cause environmental challenges, one of which is acid mine drainage (AMD) with low pH and elevated concentrations of heavy metals and suspended solids. This study aimed to assess water quality improvement through a constructed wetland system using Purun tikus (Eleocharis dulcis) and palm oil empty fruit bunch compost (TKKS). Laboratory-scale experiments were conducted with five treatment variations and three replications over a 20-day retention period. Results indicated that the media combination, with or without limestone addition, significantly altered the water quality parameters. The pH increased from 3.35 to 7.76; TSS decreased from 1,373.3 mg/L to 151 mg/L; Fe decreased from 33.15 mg/L to 2.68 mg/L; and Mn decreased from 7.06 mg/L to 0.45 mg/L over 20 days. These results indicate the potential of constructed wetlands using native plants and organic materials as an environmentally friendly strategy for treating mining wastewater.

Perencanaan Sistem Penyaliran Tambang Batubara Sump RL 16 HW Barat Pit Tutupan, PT Pamapersada Nusantara, Kalimantan Selatan Simamora, Eprilia; Nurcholis, Mohammad; Ardian, Aldin; Luwik Djanas Usup, Hepryandi
Jurnal Manajemen Teknologi & Teknik Sipil Vol. 7 No. 2 (2024): DECEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jurmateks.v7i2.6284

The coal mining activities conducted by PT Pamapersada Nusantara in the Pit Tutupan, South Kalimantan, employ an open pit mining system. This method creates exposed working surfaces that can accumulate rainwater runoff. This study aims to design a drainage system to manage water control in the western high wall area of RL 16, considering the impact of mining progression. The planning involves calculations for scheduled rainfall, rainfall intensity, estimated water discharge, open channel dimensions, culvert, and the number of pumps required to manage water in the pit sump. Using the Log Pearson III distribution, planned rainfall is determined at 101.499 mm for a 2-year return period and 134.782 mm for a 5-year return period. The rain catchment area at the research site in Sump RL 16 HW Barat is 84.83 hectares. The proposed trapezoidal channel design accommodates varying water discharges: 4.47 m³/s, 5.04 m³/s, 8.75 m³/s, 7.87 m³/s, 7.20 m³/s, and 3.77 m³/s for tertiary, secondary, and primary channels. The sump is designed to store two days’ worth of rainfall, with a capacity of 186,516 m³. Excess water is pumped to an external drainage system and settling pond using a Direct Multistage Pump system. The primary pump planned is the Multiflo 420 EX, complemented by a Warman 8/6 AH booster pump. Both pumps utilize TYCO PE100 HDPE pipes, ensuring efficient water transfer to the drainage system and settling pond, optimizing mine water management. The research results can be a reference for planning mine drainage systems with similar characteristics.

Analisis Bahaya Longsor di Kecamatan Padalarang Kabupaten Bandung Barat Berbasis Sistem Informasi Geografis: Geographic Information System Based Analysis of Landslide Hazards in Padalarang Sub-district, West Bandung Regency Rahmawati, Septi Sri; Khoirullisan, Ahmad Rif’an; Sarastika, Tiara; Nurcholis, Mohammad
Jurnal Ecosolum Vol. 12 No. 1 (2023): JUNI
Publisher : Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ecosolum.v12i1.26663

Indonesia is characterized by a diverse topography and low to very high rainfall intensity. In addition, the population density in fertile Indonesian hilly areas is also increasing. These conditions translate to high potential for landslide hazard in Indonesia with threats of loss ranging from economic, social, to fatalities. One of the areas with a high level of landslide hazard is Padalarang Subdistrict, West Bandung Regency, West Java Province. The purpose of this research is to identify the landslide hazard in Padalarang Subdistrict, West Bandung Regency. Geographic Information System Analysis was used in this study by using an overlay technique presented on the map. The analytical method used was a survey-exploratory analysis with descriptive analysis techniques. The results showed that the landslide hazard in Padalarang Subdistrict could be divided into three categories; having landslide hazard in the north, having landslide potential in the north to the west and southeast, and having no landslide hazard in the central to southern parts which are alluvial plains. Analysis of the landslide hazard in Padalarang Subdistrict provided a spatial picture so that it could be potentially employed to be part of disaster mitigation to minimize material and non-material losses.

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