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All Journal International Journal of Advances in Applied Sciences ASEAN Journal of Systems Engineering Majalah Forum Teknik UGM Jurnal Penelitian Saintek Inersia : Jurnal Teknik Sipil dan Arsitektur Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan BIOTROPIA - The Southeast Asian Journal of Tropical Biology TAMBANG Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik JURNAL TEKNIK SIPIL ITP ISSN 2354-8452 Majalah Geografi Indonesia Journal of Degraded and Mining Lands Management Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) JPSE (Journal of Physical Science and Engineering) Jurnal Teknologi Mineral dan Batubara Journal of the Civil Engineering Forum Jurnal Geomine Indonesian Journal of Chemistry PROMINE Conference SENATIK STT Adisutjipto Yogyakarta Jurnal Otomasi Kontrol dan Instrumentasi Journal of Appropriate Technology for Community Services Respati Journal of Applied Geology Jurnal Teknik Sipil Institut Teknologi Padang Techno Indonesian Journal of Physics (IJP) International Journal of Disaster Management BULLET : Jurnal Multidisiplin Ilmu ALTRON Jurnal Teknologi Mineral dan Batubara
Wahyu Wilopo
Department Of Geological Engineering, Universitas Gadjah Mada, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Social Sciences Transportation Veterinary

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Spatiotemporal analysis of groundwater level trends and recharge rate estimation in the unconfined aquifer of Yogyakarta-Sleman Groundwater Basin, Indonesia Muhammad Haikal Razi; Wahyu Wilopo; Doni Prakasa Eka Putra
Journal of Degraded and Mining Lands Management Vol. 11 No. 1 (2023)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2023.111.4887

Abstract

Groundwater is the primary water resource used for domestic, industrial, and agricultural needs for the community in the Yogyakarta-Sleman Groundwater Basin area. The urbanization rate has increased since the 1970s and has made massive use of groundwater, causing environmental problems, including the quality and quantity of groundwater. Therefore, this study aimed to investigate the spatiotemporal groundwater fluctuation trends based on the non-parametric Mann-Kendall test and recharge rate estimation using the water table fluctuation (WTF) method. The groundwater level data were collected from monitoring wells across the study area during 2018-2022, particularly emphasizing 8 wells representing recharge, transition, and discharge areas. The results showed that the groundwater fluctuation pattern generally followed the season. During the rainy season from January to April, groundwater reached the shallowest level and began to decline gradually when it entered the dry season from May to October. Groundwater recharge rate was estimated to vary from 171.49 to 1,505.56 mm/year. Meanwhile, the Mann-Kendall test showed that most of the Yogyakarta-Sleman Groundwater Basin area did not experience significant fluctuation trends, except for two monitoring wells in the center of Yogyakarta City which had increasing groundwater level trends. The rising groundwater levels were expected to be caused by urban wastewater recharge. This study has provided a new description and insights into spatiotemporal changes in the groundwater table and the quantification of groundwater recharge.
PERANCANGAN PEMANFAATAN ENERGI BARU TERBARUKAN BERBASIS TENAGA HIBRIDA UNTUK MENINGKATKAN RASIO ELEKTRIFIKASI (STUDI KASUS: KECAMATAN TULAKAN, KABUPATEN PACITAN) Sri Anggoro Prahastono; Ahmad Agus Setiawan; Wahyu Wilopo
Jurnal Altron Jurnal Elektronika, Sains & Sistem energi
Publisher : Program Studi Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51401/altron.v2i02.2766

Abstract

Salah satu daerah yang memiliki rasio elektrifikasi rendah terdapat di Kecamatan Tulakan, Kabupaten Pacitan, Jawa Timur. Padahal, potensi Energi Baru Terbarukan masih banyak yang dapat dimanfaatkan. Pada daerah tersebut, terdapat potensi energi surya, angin, dan biogas yang tinggi untuk dikembangkan agar penduduk sekitar mendapatkan aliran listrik yang sesuai dengan kebutuhan. Tujuan dari penelitian ini adalah untuk mensimulasikan Energi Baru Terbarukan berbasis tenaga surya, tenaga angin, dan biogas yang ada di Kecamatan Tulakan, agar dapat memperoleh kombinasi terbaik. Dengan melakukan simulasi menggunakan perangkat lunak HomerPro, didapatkan kombinasi konfigurasi yang bersifat Off-grid. Konfigurasi terbaik yang telah didapatkan terdiri dari kombinasi Panel Surya, Turbin Angin, dan Biogas. Konfigurasi ini memproduksi listrik hingga 11.590 kWh/tahunnya, dimana persentase produksi energi terbesar dari Turbin Angin sebesar 65,9%, Panel Surya sebesar 25%, dan biogas sebesar 9,1%. Konfigurasi ini menghasilkan emisi CO2 dari generator biogas sebanyak 1.324 kg/tahun dan membutuhkan biaya investasi awal sebesar Rp 2.317.119.450. Penerapan dari konfigurasi ini dapat meningkatkan rasio elektrifikasi hingga 100%
GIS for Landslide Risk Assessment, Study Case Pengasih and Sentolo District, Kulon Progo, Indonesia Thema Arrisaldi; Puji Pratiknyo; Wahyu Wilopo
International Journal of Disaster Management Vol 6, No 1 (2023): April
Publisher : TDMRC, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ijdm.v6i1.30595

Abstract

Landslide is a natural phenomenon that often occurs as a disaster in Kulon Progo Region. This research is located in Pengasih and Sentolo District, Kulon Progo. The aim of the study is landslide risk mapping in the research area. The landslide risk map has 3 parameters, such as potential landslide condition, vulnerable situations, and community capacity to cope with the landslide disaster. Potential landslide obtained from Geographic Information System (GIS )overlay analysis using Analytical Hierarchy Process (AHP) consists of 4 sub-parameters: slope gradient (55.49%), geological condition (25.16%), stream density (9.67%), land use (9.67%). The vulnerability was obtained from 3 sub-parameters, such as economic vulnerability (33.33%), infrastructure vulnerability (33.34%), and population density (33.33%). The community capacity in the research area was obtained from The activity of the Region Disaster Management Authority (BPBD) of Kulon Progo to strengthen community awareness to cope with landslide disasters, such as socialization about landslides and simulation during an emergency landslide. The input in overlay analysis used GIS for the parameters are all sub-parameters from each parameter. Landslide risk map obtained from overlay analysis using GIS based on landslide potential map, vulnerability map, and capacity map. The result is that Pengasih and Sentolo Districts have low to moderate landslide risk conditions. Several landslides occur in each landslide risk zone.
PENGARUH MUTASI TERHADAP AKTIVITAS BIOLEACHING MANGAN BAKTERI PENGOKSIDASI SULFUR Muhammad Zulfikrie; Wahyu Wilopo; I Wayan Warmada; Endah Retnaningrum
Jurnal Teknologi Mineral dan Batubara Vol 18 No 3 (2022): Jurnal Teknologi Mineral dan Batubara Edisi September 2022
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol18.No3.2022.1158

Abstract

Mangan merupakan jenis logam berat yang banyak digunakan dalam aktivitas manusia. Saat ini teknologi bioleaching menjadi alternatif dalam penambangan mangan karena dinilai lebih efektif dan ramah lingkungan. Kelompok bakteri pengoksidasi sulfur diketahui berpotensi dalam melakukan bioleaching mangan. Bakteri pengoksidasi sulfur dengan kode isolat MN1E telah berhasil diperoleh dari sumber air panas di Candi Gedong Songo, Semarang. Penelitian ini bertujuan untuk mengetahui pengaruh mutasi sinar ultraviolet (UV), sodium nitrit (NaNO2), dan dietil sulfat (DES), serta kombinasinya dengan berbagai waktu paparan (5,10, 15 menit) terhadap kemampuan bioleaching mangan dan ketahanan terhadap H2O2 dari isolat MN1E tersebut. Kemampuan bioleaching mangan diukur menggunakan metode Atomic Absorption Spechtrofotometry (AAS) selama 18 hari. Aktivitas bioleaching mangan tertinggi dilakukan oleh isolat mutan N5 dan D10 pada hari ke-18 dengan nilai persentase pelarutan masing-masing sebesar 14,22% dan 14,09%. Isolat mutan N5 memiliki ketahanan paling baik terhadap paparan H2O2. Isolat MN1E teridentifikasi sebagai anggota spesies Staphylococcus pasteuri dan potensial untuk diaplikasikan pada proses penambangan bijih mangan.
Co-Authors Abd Karim, Amirul Aiman Adam Raka Ekasara Adelide Asriati Sekar Rianda Adhi Susanto Adriansyah, Yan Afrizal Abdi Musyafiq Agung Setianto Agus Aktawan Agus Budhie Wijatna Agus Prasetya Agus Prasetya Ahmad Agus Setiawan Ahmad Agus Setiawan Ahmad Tawfiequrrahman Yuliansyah Ainul Fatayaatis Salaamah Aisyah Shahirah Juhari Alessandro Pagliaroli AM Lelie Novia W Amirul Aiman Abd Karim Andriyanto Andriyanto Anh Bui, Tuan Arief Budiman Arif Kusumawanto Atikah Zahidah Avantio Pramaditya Bayu, Himawan Tri Boreborey, Ty Boulom, Johnny Bramono Dwi Kusumo Budi Nur Cahyo Deepak Chamlagain Defi Rizkasari Denizar Rahman Dianto Isnawan Didit Hadi Barianto Doni Prakasa Eka Putra Doni Prakasa Eka Putra Dwi Kusumo, Bramono Dwiana Muflihah Yulianti Dwikorita Karnawati Dwikorita Karnawati Egy Erzagian Ekasara, Adam Raka Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Fahriza Fawwas Asrory Farma Dyva Ferardi Feikal Aprieza Ferardi, Farma Dyva Feri Aspriadi Ferian Anggara Fikri Faris Galeh Nur Indriatno Putra Pratama Giuseppe Lanzo H Husnizar H Setiawan Harry Leo Kharisma Haryono, Septiawan Nur Hendy Setiawan Heng, Salpisey Heru Hendrayana Hirajim, Tsuyoshi Hirajima, Tsuyoshi I Gde Budi Indrawan I Wayan Warmada Inderawan, Gde Budi Irvani Irvani Irvani Irvani Irvani, Irvani Irwan Setyaji Johnny Boulom Joko Waluyo Junji Kiyono Junji Kiyono K D Setyawan Keiko Sasaki Kezia Kartika Windya Kezia Kartika Windya Kirbani Sri Brotopuspito Kirbani Sri Brotopuspito Kirbani Sri Brotopuspito Kiyono, Junji Kusumaningrum, Serafica Btari Christiyani Luthfi Effendi Luthfi Effendi Makealoun, Somyot Manixone Thepgnothy Maris Setyo Nugroho Mohammad Kholid Ridwan Mohammad Pramono Hadi Muhammad Haikal Razi Muhammad Hidayat Furqon Muhammad Sulaiman Muhammad Zulfikrie Myat Thu Naing Nadia Sekarlangit Nurul Huda Nur’Aini Purnamaningsih Phyu Phyu Thin Puji Pratiknyo Pyi Soe Thein Pyi Soe Thein Qurrahman, Alfian Hardi R Risanti R. Andy Erwin Wijaya Rahman, Denizar Raja Susatio Raja Susatio Rama Tri Saksono Ramesh Adhikari Restu Dwi Cahyo Adi Restu Tandirerung Retnaningrum, Endah Ridwan Budi Prasetyo Rilo Restu Surya Atmaja Salaamah, Ainul Fatayaatis Salahuddin Husein Salpisey Heng Sasaki, Keiko Satoru Kawasaki Sekar Rianda, Adelide Asriati Septiawan Nur Haryono Shinta Dwi Novianti Slamet Widodo Somyot Makealoun Soutsadachan Chandalsouk Sri Anggoro Prahastono Srijono ., Srijono Srijono Srijono Srijono Srijono Srijono Srijono, Srijono Su Dar mono Subagyo Pramumijoyo Subagyo Pramumijoyo Subagyo Pramumijoyo, Subagyo Subur Priyono Sudarno, Ignatius Sunarko Sunarko Sunarko Sunarko Surya Damar Sasongko Putro Taufiq Muhammad Wijayanto Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Thein, Pyi Soe Thema Arrisaldi Thema Arrisaldi, S.T., M.Eng. Thepgnothy, Manixone Tsuyoshi Hirajim Tsuyoshi Hirajima Tsuyoshi Hirajima Tuan Anh Bui Ty Boreborey Vienti Hadsari Wahid Pujo Widiyantoro Wawan Budianta Wijayanto, Taufiq Muhammad Wisnu Rachmad Prihadi Yan Adriansyah Yuli Fajarwati Yulianti, Dwiana Muflihah Zulaikha Budi Astuti Zulkifli Zulkifli Zulkifli Zulkifli