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All Journal Indonesian Journal of Geography Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Majalah Geografi Indonesia Jurnal RISET Geologi dan Pertambangan Jurnal Pengembangan Kota Journal of Degraded and Mining Lands Management Jurnal Wilayah dan Lingkungan Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Journal of Geoscience, Engineering, Environment, and Technology PROMINE Jurnal Geosains dan Teknologi Journal of Applied Geology BULLET : Jurnal Multidisiplin Ilmu Jurnal Geosaintek

Doni Prakasa Eka Putra

Departemen Teknik Geologi, Fakultas Teknik, Universitas Gadjah Mada

Author-ID : 258314

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Physics

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Evaluasi Kondisi Geologi Teknik dalam Pembangunan Embung I Gde Budi Indrawan; Shinta Dwi Novianti; Heru Hendrayana; Doni Prakasa Eka Putra; Wahyu Wilopo
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 5, No 1 (2019): April
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Pucang Village was consisted of eruption materials of Merapi Volcano. The relatively high coefficient of permeability of the materials consisting this area caused rainwater to directly infiltrate into the ground. Evaluation of engineering geological conditions was conducted for construction of a detention pond in this area, which had limited water supply for daily activities. The evaluation was conducted on results of a 1:10.000 scale of engineering geological mapping and analyses of 1:10.000 scale of geological disaster maps produced by previous researchers. The engineering geological mapping involved mapping of morphological condition and active geomorphic process, lithological condition, existence of geological structure, and water source location. The evaluation results showed that the proposed location met the land suitability criteria for detention pond construction based on the morphological condition and active geomorphic process, existence of geological structure, and water source location, but did not meet those based on the lithological and vulnerability to Merapi Volcano eruption disaster. Construction of impermeable layer to prevent water seepage into the ground and periodic removal of sediment in the base of the detention pond were suggested to be carried out to keep the detention pond functioning properly.

ANALISIS MULTI KRITERIA SPASIAL UNTUK EVALUASI RENCANA PENGEMBANGAN PERUMAHAN DI GODEAN, YOGYAKARTA Doni Prakasa Eka Putra; Rilo Restu Surya Atmaja; Kurnianto Dwi Setyawan; Raja Susatio
Jurnal Pengembangan Kota Vol 8, No 2: Desember 2020
Publisher : Diponegoro University

Kebutuhan perumahan di daerah perkotaan semakin tinggi, tidak sebanding dengan ketersediaan lahan untuk perumahan. Upaya pembukaan lahan yang murah tersedia pada daerah bentang alam ekstrim seperti perbukitan, seperti di Godean, Yogyakarta, yang memiliki potensi bahaya gerakan massa. Kajian ini bertujuan untuk memetakan zona bahaya gerakan massa dan mengevaluasi keamanan site-plan perumahan. Metodologi peneltian berupa pemetaan aspek geologi teknik yaitu kelerengan, kekuatan batuan, dan densitas struktur geologi yang kemudian diolah dengan metode overlay pada perangkat lunak Sistem Informasi Geografis. Aplikasi analisis multi kriteria (AMK) spasial menghasilkan zonasi kerentanan/potensi bahaya gerakan massa detil di lokasi penelitian, dimana zona ekstrim bahaya gerakan massa berasosisasi dengan lereng yang curam-terjal, kekuatan batuan lemah dan densitas struktur geologi yang rapat-sangat rapat. Penampalan peta bahaya tersebut dengan site-plan memungkinkan perencana dan pemangku kepentingan melakukan perencanaan ulang pada beberapa blok perumahan untuk memastikan pengembangan perumahan yang aman.

Pemodelan Pergerakan Pencemar Airtanah oleh Hidrokarbon di Kelurahan Jlagran Kota Yogyakarta Harizona Aulia Rahman; Doni Prakasa Eka Putra; Heru Hendrayana
Jurnal Geosains dan Teknologi Vol 1, No 3 (2018): November 2018
Publisher : Universitas Diponegoro

Kebocoran tangki bahan bakar minyak untuk kereta api di Stasiun Tugu Yogyakarta pada tahun 1997 menyebabkan pencemaran airtanah pada sumur-sumur penduduk. Bahan bakar minyak (hidrokarbon) tergolong LNAPLs (Light Non Aqueous Phase Liquids), sukar larut dalam air. Penyebaran kontaminan (plume) pada airtanah dipengaruhi oleh biodegradasi. Penelitian terdahulu oleh Setyaningsih (2010) menyebutkan bahwa kecepatan aliran pada daerah penelitian adalah 1,5 km per tahun dalam kurun waktu 5 tahun, plume sudah mengalir jauh dari daerah penelitian. Berdasarkan informasi tersebut, sangat perlu diketahui arah pergerakan aliran airtanah dari 24 sumur observasi. Daerah penelitian merupakan bagian atas dari Sistem Akuifer Merapi (SAM) dengan penyusun endapan pasir dan endapan pasir krikilan, dengan aliran airtanah yang tidak seragam. Secara umum, aliran airtanah di daerah penelitian berarah utara-selatan. Di bagian selatan, aliran terpisah ke arah timur dan barat karena keberadaan sungai yang juga membatasi daerah penelitian. Hasil pengukuran dan analisa sampel airtanah menunjukkan 13 sumur observasi diindikasikan tercemar oleh hidrokarbon dengan plume sepanjang 325 m bergerak dari barat laut ke tenggara. Simulasi penyebaran pencemar dan konsentrasi hidrokarbon terlarut dibuat pemodelan menggunakan BIOPLUME III. Nilai kandungan hidrokarbon yang dipakai diambil dari data sumur, yaitu 1 mg/L hingga 50 mg/L. Pergerakan plume di daerah penelitian mengikuti arah aliran airtanah dan diestimasi mengalami penurunan konsentrasi kemudian hilang setelah 54 tahun. Nilai konsentrasi berkurang dari 50 mg/L menjadi 1,63 mg/L dengan rata-rata penurunan konsentrasi sebesar 7,95 mg/L selama 10 tahun.

Kajian Kandungan Logam Berat Pada Sedimen Sungai Di Lokasi Penambangan Emas Tradisional, Desa Boto, Kecamatan Jatiroto Efendi Putra Dwijaya Pa; Wawan Budianta; Doni Prakasa Eka Putra
PROMINE Vol 7 No 2 (2019): PROMINE
Publisher : Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/promine.v7i2.1641

Traditional and small-scale gold mining, known as ASGM (Small Scale Gold Mining), has been approved forpollution of the environment specifically for watersheds. This research was conducted in Boto Village,Jatiroto Subdistrict, Wonogiri Regency, Central Java Province. This study discusses the analysis ofcomposition and heavy metals and the factors that support heavy metals in the study site. The samplestaken were 22 samples along the river flow in the upstream and downstream areas. Tests of content werenot carried out by the ICP-AES method. Laboratory test results on river sediment samples were thenanalyzed statistically, geoaccumulation index and enrichment factors were calculated. Laboratory test resultsshow that most do not have heavy metal content exceeding the average concentration of heavy metals inriver sediments. The spread of heavy metals in river sediments in the study sites was found to be varied withdifferences in the upstream and downstream areas. In general, upstream areas have higher metal reservescompared to downstream. Distribution of heavy metals for everything that has not been planned, isprocessed by natural processes or human activities. Traditional mining activities contribute significantly incontributing to the addition of Hg, as well as contributing to the increase of other metals, most of which are inthe mineralized area, which fully contains high metal reserves.

Bio-geochemical simulation for solute transport in Piyungan landfill, Yogyakarta Special Province, Indonesia Keophousone Phonhalath; Dwikorita Karnawati; Heru Hendrayana; Doni Prakasa Eka Putra; Kenji Jinno
Journal of Applied Geology Vol 3, No 1 (2011)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Piyungan Landfill is the largest in Bantul Regency. According to water quality sampling taken from a leachate pond, there are significant contaminant issues resulting from landfill leachate. The objectives of this research were achieved by applying a two-dimensional bacteria mediated reduction numerical model was applied. Method of characteristic was applied to solve the advection part of the solute transport equation. Three bacteria (X1, X2, and X3) groups were defined in the redox model. In the conceptual model, bacterial X1 utilizes oxygen under aerobic conditions and nitrate, NO-3 under aerobic conditions as electron acceptors. Consequently, under aerobic conditions bacteria X2, and X3 utilize MnO2, and Fe(OH)3 respectively as electron acceptors. In the redox model organic carbon which was defined as CH2O was considered as the electron donor for all bacteria mediated reduction reactions. The results of research are to improve the understanding of biogeochemical processes in aquifer.

Evolution of groundwater chemistry on shallow aquifer of Yogyakarta City urban area Doni Prakasa Eka Putra
Journal of Applied Geology Vol 3, No 2 (2011)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Since 1980s, accelerated by urbanization, Yogyakarta City was shifting to many directions defined by main road networks and service centres. Urbanization has transformed rural dwellings to become urban settlements and generated urban agglomeration area. Until now, new business centres, education centres and tourism centres are growing hand in hand with new settlements (formal or informal) without proper provision of water supply and sanitation system. This condition increase the possibility of groundwater contamination from urban wastewater and a change of major chemistry of groundwater as shallow unconfined aquifer is lying under Yogyakarta City. To prove the evolution of groundwater chemistry, old data taken on 1980s were comparing with the recent groundwater chemistry data. The evaluation shows that nitrate content of groundwater in 1980s was a minor anion, but nowadays become a major anion, especially in the shallow groundwater in the centre of Yogyakarta City. This evidence shows that there is an evolution of groundwater chemistry in shallow groundwater below Yogyakarta City due to contamination from un-proper on-site sanitation system. Keywords: Urbanization, Yogyakarta city, rural dwellings, settlements, agglomeration, contamination, groundwater

Removal of mercury (Hg) from contaminated water at traditional gold mining area in Central Kalimantan Wahyu Wilopo; Denizar Rahman; Doni Prakasa Eka Putra; I Wayan Warmada
Journal of Applied Geology Vol 3, No 2 (2011)
Publisher : Geological Engineering Department Universitas Gadjah Mada

There are many traditional gold mining and processing in Murung Raya Regency, Central Kalimantan. The processing of gold mostly uses mercury (Hg) and produces a lot of waste water. It just throws to the river without any treatment. Therefore the concentration of mercury (Hg) in the river water is over than the standard of drinking water and reach up to 0.346 mg dm-3. This situation is very dangerous because almost of the people in the downstream area depend on the river water for their daily purposes. To solve this problem, tuff from local material was used to remove mercury using batch experiment. The result showed that tuff has capability to remove mercury in the significant amount. The main mechanism of mercury removal by tuff is cation exchange processes due to high surface area of tuff. The result of this study can be used as an alternative for waste water treatment in mining area. Keywords: Traditional mining, mercury removal, tuff

COASTAL AQUIFER GROUNDWATER MODELING IN THE SOUTHERN PART OF YOGYAKARTA AREA, INDONESIA Doung Rata; Doni Prakasa Eka Putra; Heru Hendrayana
Journal of Applied Geology Vol 4, No 1 (2012)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Parangtritis beach, located in a coastal aquifer at the southern part of Yogyakarta Province, Indonesia is bounded by the Indian Ocean at the South, Opak River at the West, and Tertiary Limestone Rock to the East. Local land-use is predominantly agriculture, rice fields and settlements and the population is estimated to be 9,386 persons as per the 2012 census. The total surface area is estimated at 9.46 km2. The aims of this research were to understand the system of groundwater and to assess and predict saltwater intrusion by conducting a numerical groundwater model. Hydrological and hydrogeological data were collected directly from the field and from previous work for input into the model. The model simulates an unconfined aquifer system where the aquifer thickness varies from 30-40 meters. The material of the aquifer consists of sand varying from fine to coarse grain size and fine gravel with hydraulic conductivity values of 8.974 × 10−4, 1.794 × 10−3, and 1.337 × 10−3 m/s at the northern, central, and southern part of the research area, respectively. The maximum length of the saltwater interface was estimated at about 205.1 m laterally and 40 m vertically relative to the location of the groundwater table around 1m above sea level. Direction of groundwater flow is from north to south. Groundwater table elevation equals 5 m at the north and 0 m at the south with a hydraulic gradient estimated at about 2.45 × 10−3. As a result of a steady-state simulation as well as two cases of prediction for five and ten years in the future, it is determined that that the salinity of the surrounding environment is not potentially adverse to the groundwater quality in the study area. This is in part due to low population in this area and abundant groundwater resources, as well as the results of the groundwater model. Keywords: Coastal aquifer, numerical groundwater model, conceptual model, observed heads

Removal Of Copper From Water Using Columns Experiment Of Lignite, Shale, And Ironsand Ty Boreborey; Wahyu Wilopo; Doni Prakasa Eka Putra
Journal of Applied Geology Vol 4, No 1 (2012)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Experimental studies using column testing of lignite, shale, and ironsand in copper solution were carried out to determine the adsorption capacity of lignite, shale, and ironsand in remediation of water contaminated with copper. Lignite, shale, and ironsand were analyzed using XRD, SEM/EDX, and XRF. The treatment process by column adsorption was carried out over a period of 24 hours at a stable velocity of 0.005ml/s. After treatment, the remaining copper in the solution was recorded, thus allowing the adsorption capacity of lignite, shale, and ironsand to be calculated. The results revealed that when the solution was treated by lignite and shale there was a good degree of copper removal, while the ironsand had very poor degree of copper removal. The best material for copper removal was lignite with 25-mesh grain size. Pyrite, graphite, calcite, and illite were found in lignite and smectite, calcite, pyrite, hematite, and illite were found in shale. These materials were also shown to contain an abundance of high-valence elements in Al2O3, SiO2, and Fe3O4 which contributes to additional adsorption capacity. CAC values for lignite and shale reached nearly to 100%, suggesting that lignite and shale have a high adsorption capacity. In contrast, ironsand, which has mostly sand minerals with little clay and organic content, caused the pollutant to move rapidly to the water table, reducing the adsorption potential. CAC values treated by ironsand were shown to be negative which showed an increasing of Cu2+ in natural ironsand into solution. Keywords: Copper, ironsand, shale, lignite, column experiment

Removal Of Lead (Pb2+) From Aqueous Solutions By Natural Bentonite Wahyu Wilopo; Doni Prakasa Eka Putra; I Wayan Warmada; Tsuyoshi Hirajima
Journal of Applied Geology Vol 4, No 1 (2012)
Publisher : Geological Engineering Department Universitas Gadjah Mada

The aim of the present work is to investigate the ability of natural bentonite (untreated) from Pacitan, East Java to remove lead ions from aqueous solution. The bentonite has specific surface area and cation exchange capacity of 27.52 m2 g−1 and 65.20 meq/100 gr of bentonite, respectively. Towards this aim, batch adsorption experiments were carried out and the effect of various parameters on this removal process has been investigated. The effects of pH, grain size of bentonite, adsorption time and lead ion concentration on the adsorption process were examined. The optimum pH for adsorption was found to be 9, with the finer grain size of bentonite is more effective. In adsorption studies, residual lead ions concentration reached equilibrium in a duration of 24 hours. Adsorption of lead on bentonite appeared to follow Freundlich isotherm. Our results demonstrate that the adsorption process was mostly dominated by ion exchange process. Keywords: Removal, lead, aqueous solution, natural bentonite, adsorption.

Co-Authors Adelide Asriati Sekar Rianda Agung Harijoko Agung Setianto Agus Budhie Wiyatna Agus Hendratno Alwan Satapona Atikah Zahidah Atmaja, Rilo Restu Surya Aung, Hnin Thazin Avantio Pramaditya Azmin Nuha Azwar Satry Muhammad Boreborey, Ty Boulom, Johnny Carlito Baltazar Tabelin Denizar Rahman Deviana Halim Doung Rata Dwikorita Karnawati Efendi Putra Dwijaya Pa Egy Erzagian Firginawan Surya Wanda Galeh Nur Indriatno Putra Pratama H Setiawan Harizona Aulia Rahman Haryono, Septiawan Nur Hazarika, Hemanta Hemanta Hazarika Hendy Setiawan Heng, Salpisey Hermawan, Oktanius Richard Heru Hendrayana Hirajima, Tsuyoshi Hnin Thazin Aung I Gde Budi Indrawan I Wayan Warmada Igarashi, Toshifumi Jaingot A. Parhusip Jaingot A. Parhusip, Jaingot A. Jinno, Kenji Johnny Boulom Juwarso Juwarso Juwarso, Juwarso K D Setyawan Kenji Jinno Keophousone Phonhalath Kurnianto Dwi Setyawan Kyu Kyu Mar Kyu Mar, Kyu Leakhena Snguon Lenggono, Tego Liliane Manny Listiyastuti, Riana Makealoun, Somyot Manixone Thepgnothy Manny, Liliane Maris Setyo Nugroho Mohammad Pramono Hadi Muhammad Haikal Razi Muhammad Iqbal Muhammad Iqbal Muhammad, Azwar Satry Nuha, Azmin Nurwijayanti Oktanius Richard Hermawan Phetnakhone Xaixongdeth Phonhalath, Keophousone Ponhalath Xaixongdeth R Risanti Rahman, Denizar Rahmat Satya Nugraha Raja Susatio Raja Susatio Raja Susatio Rata, Doung Restu Tandirerung Rilo Restu Surya Atmaja Rilo Restu Surya Atmaja Rilo Restu Surya Atmaja Rilo Restu Surya Atmaja Salpisey Heng Sandi Suko Widagdo Sarto Sarto Sarto Satapona, Alwan Sato, Tsutomo Sato, Tsutomu Saw Aung Zaw Aye Sekar Rianda, Adelide Asriati Septiawan Nur Haryono Shinta Dwi Novianti Simamora, Lestari Sutra Slamet Widodo Snguon, Leakhena Somyot Makealoun Soutsadachan Chandalsouk Souvannachith, Thilavanh Suryanto, Wiwit Syauqi, Syauqi T. Putranto, Thomas Tabelin, Carlito Baltazar Tee Xiong Tego Lenggono Teuku Faisal Fathani Teuku Faisal Fathani Thanh Thuy, Tran Thi Thepgnothy, Manixone Thilavanh Souvannachith Thomas T. Putranto Thomas Triadi Putranto Thomas Triadi Putranto, Thomas Triadi Toshifumi Igarashi Tran Thi Thanh Thuy Tsutomo Sato Tsutomu Sato Tsuyoshi Hirajima Tsuyoshi Hirajima Ty Boreborey Visi Asriningtyas Wahyu Wilopo Wawan Budianta Wibowo, Handoko Teguh Wisnu Rachmad Prihadi Wiyatna, Agus Budhie Xaixongdeth, Phetnakhone Xaixongdeth, Ponhalath Xiong, Tee Yosua Priambodo Zaw Aye, Saw Aung

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