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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Bahan Alam Terbarukan Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Kreativitas PKM Ekuilibrium : Jurnal Ilmiah Bidang Ilmu Ekonomi Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Journal of Community Based Environmental Engineering and Management Journal of Applied Engineering and Technological Science (JAETS) International Journal of Marine Engineering Innovation and Research Jurnal Teslink : Teknik Sipil dan Lingkungan Environmental Engineering Journal ITATS INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Journal of Sustainable Infrastructure Jurnal Studi dan Aplikasi Teknik Sipil (JSATS)
Wisnu Prayogo
Universitas Negeri Medan
Religion Agriculture, Biological Sciences & Forestry Arts Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Alternative Neutralizers for Acid Mine Wastewater: Characterization and Neutralizing Potency of Pond Ash and Concrete Sludge Dion Awfa; Rifka Noor Azizah; Ahmad Daudsyah Imami; Resarizki Utami; Edo Kharima Army; Evi Eri Narita; Muhammad Meiko Cahya Anugrah; Nasrul Putra; Wisnu Prayogo; Novriadi
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 1 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i1.4745

Abstract

One of the most widely used fuels is coal, where the South Sumatra region is an area with coal potential whose production is still being increased. On the other hand, there are negative impacts caused by coal exploration activities, one of which is mining runoff, commonly called acid mine drainage. Acid mine drainage has a low pH and contains inorganic constituents such as iron and manganese. Therefore, proper and optimum information processing is needed to support environmentally friendly mining management. In contrast, alternative materials such as blast furnace slag, wood ash, fly ash, cement kiln dust, and construction waste are being used. These materials are effective against AMD, at a relatively low cost, and outperform traditional neutralizers. However, comparing them with conventional agents is challenging due to limited data and experimental variation. In this study, the objectives to be achieved are 1) to determine the quality conditions of AMW at the study location, 2) to determine the effectiveness of the use of chemical and alternative compound neutralization agents in the processing process, and 3) to provide recommendations for the dosage, type of neutralization agent, and the most optimum time in AMW processing. The AMW obtained is then subjected to laboratory analysis related to quality, including TSS, pH, Fe, and Mn parameters. In addition, conventional and alternative neutralization agents are also prepared and then used to process AMW. Then, experiments were carried out on variations in the type of neutralization agent, the dosage of neutralization agent use, and the contact time between the neutralization agent and AMW. Experimental results have shown that these materials, mainly pond ash and concrete sludge, can effectively neutralize pH and reduce Mn concentrations by up to 83.26% and 79.12%, respectively. Similarly, Fe concentrations can be reduced by up to 80.76% and 74.05% using pond ash and concrete sludge, respectively. While these results are promising, future research should focus on characterizing the generated sludge to confirm the adsorption of ferrous and manganese ions onto the surface of the alternative neutralizers.
An Analysis of Challenges, and Prospects of Overcrowding and Heritage Small Island as a Tourism Destination: Pulau Lengkang, Batam Case Study I Wayan Koko Suryawan; Sapta Suhardono; Iva Yenis Septiariva; Wisnu Prayogo
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 1 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.5045

Abstract

This paper explores Pulau Lengkang, an island near Batam City, known for its natural beauty and cultural heritage. It examines the impact of overcrowding on its aspiration to become a prominent tourism heritage destination. The main goal is to analyze the strengths, weaknesses, opportunities, and threats Pulau Lengkang faces in its development into a renowned tourist hub, with a focus on the challenges of overcrowding and the potential for sustainable tourism. The study employs a qualitative approach, relying on thorough literature review to understand the island's unique cultural and historical aspects and the implications of increasing visitor numbers on its heritage and environment. The findings reveal that while Pulau Lengkang boasts significant cultural and historical appeal, overcrowding threatens to strain its infrastructure and dilute its heritage. However, opportunities for sustainable tourism and cultural preservation present viable pathways to enhance its tourism appeal and support local community well-being. The study suggests that adopting eco-tourism and cultural engagement strategies can help safeguard Pulau Lengkang's heritage and promote sustainable development.
Optimization of the Mechanical Properties of Bio-degradable Plastics from Chitosan with Acetic Acid Solvent Ani Purwanti; Eka Sulistyaningsih; Wisnu Prayogo; Muhammad Yusuf
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 3 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.5116

Abstract

Shrimp shell waste contains chitin which can be processed into chitosan. Chitosan can be utilized as an edible plastic. The film is expected to maintain food quality by resisting water vapour transfer as a preservative and maintaining odour. Edible plastics as food protectors are expected to have optimal mechanical properties. Chitosan films are brittle, so plasticizers are used to increase their flexibility. The mechanical properties of the film may change during storage time. The decline in film quality is expected to be fast enough to allow edible plastics for food wrapping. This study aims to determine the effect of glycerol addition and film storage time on the mechanical properties of edible chitosan film. From the results obtained, adding glycerol plasticizer produces films with thickness and elongation that tend to increase. In contrast, the tensile strength value increases and then decreases with the addition of glycerol. The optimal mechanical strength value was obtained in the film solution with glycerol at 0.3 mL/g chitosan with a maximum tensile strength of 200 kgf/cm2 and a per cent elongation of 135%. The thickness of the film produced was 0.17 mm. The film produced in this study has met the standards of film mechanical strength (tensile strength and per cent elongation) based on the Japanese Industrial Standard (JIS). Meanwhile, based on the Indonesian National Standard (SNI), the tensile strength value produced in this study has yet to meet the SNI standard.
Simulation of Signalless Intersection Handling Using the VISSIM Model at the Punge Intersection, Banda Aceh City, Indonesia M. Isya; Yusria Darma; Rachmat Taufiqy; Juliana Fisaini; M. Faisi Ikhwali; Wisnu Prayogo; I Wayan Koko Suryawan
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 3 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.5177

Abstract

The Punge Intersection is one of the four-armed unsignalized intersections in Banda Aceh City without traffic regulations such as traffic lights, roundabouts, or other warning signs. This condition is very troublesome for road users, especially during peak hours. It is considered necessary to evaluate the performance of the intersection along with alternative treatments that produce the best performance to meet the standards. Most of the previous studies relied heavily on tailor-made simulation tools to evaluate control algorithms, but the use of simulation platforms to make system comparisons through modeling is still very rare, especially in Indonesia. Analysis and modeling at the Punge Intersection using the MKJI method and PTV VISSIM 10.00-02 (VISSIM) software. Traffic volume data (plan), road geometric, and environmental conditions are needed in data processing operations using VISSIM. Three modeling scenarios were carried out with the implementation of a one-way road for arm A in the entry direction, installation of a traffic signaling tool, called APILL, roundabout planning and widening of each arm. A roundabout planning simulation with type R10-22 with widening on each road section can make the Punge Intersection with the best LOS and meet the best service levels.
A Review: Green Life And Behavior Change for Net Zero by Non Governmental Organizations Wisnu Prayogo; Rachmat Mulyana; Janter Pangaduan Simanjuntak; I Wayan Koko Suryawan; Laili Fitria; Edo Barlian; Putri Lynna A. Luthan; Dion Awfa; Ahmad Daudsyah Imami; Rifka Noor Azizah; Ani Purwanti; Sitepu Amrina Rosyada; Vemi Ridantam; Zhilli Izzadati Khairuni
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 3 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.5178

Abstract

Global warming and environmental issues are being caused by the overuse of fossil fuels and increased industrialization around the world, which has resulted in the production of greenhouse gases. As a result, it's crucial to reach net-zero carbon emissions. By balancing the total quantity of carbon dioxide or other greenhouse gas emissions over a specific period and taking actions that are ecologically responsible, net zero carbon emissions can be accomplished. For environmental sustainability to be successful, it must be able to influence people's attitudes and behavior toward the environment. To understand NGOs' obligations in supporting net-zero carbon emissions, this paper presents a methodical debate utilizing NGOs as case studies. The method is employed in this work by reviewing the body of primary and secondary research on the study issue. This essay initially lists different environmental NGOs organizations before categorizing and outlining some of the significant GHGs reduction initiatives made by these organizations. This essay also addresses key issues that must be addressed upon to achieve the best outcomes. This report gives a broad overview of the synergizing domains that NGOs around the globe work in to assist improvement environmental security.
Evaluasi Kapasitas Saluran Drainase dalam Menampung Limpasan Hujan dan Limbah Cair Domestik pada Ruas Jalan Tuamang–Jalan Rakyat di Kota Medan Joy Eklesia Pasaribu; Hansen Anugrah Malau; Wisnu Prayogo
Jurnal Studi dan Aplikasi Teknik Sipil (JSATS) Vol. 2 No. 1 (2026): Februari
Publisher : Marasofi International Media and Publishing (MIMP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64123/jsats.v2.i1.2

Abstract

Perkembangan kawasan perkotaan di Kota Medan meningkatkan luas permukaan kedap air serta beban sistem drainase akibat limpasan hujan dan limbah domestik. Penelitian ini bertujuan mengevaluasi kapasitas saluran drainase dalam menampung debit gabungan pada ruas Jalan Tuamang–Jalan Rakyat. Metode yang digunakan meliputi analisis hidrologi untuk menentukan hujan rencana, perhitungan debit limpasan menggunakan metode rasional, proyeksi penduduk untuk estimasi limbah domestik, serta analisis hidraulika berdasarkan kondisi eksisting saluran dan sedimentasi. Hasil menunjukkan debit limpasan sebesar 14 m³/detik dan debit limbah domestik sebesar 0,025 m³/detik, sehingga total debit mencapai 14,025 m³/detik. Kondisi saluran eksisting mengalami sedimentasi dengan volume 37,28 m³ yang mengurangi kapasitas efektif. Evaluasi menunjukkan saluran masih layak untuk periode ulang 2 dan 5 tahun, cukup layak untuk 10 tahun, namun tidak layak untuk periode ulang 25 dan 100 tahun. Hal ini mengindikasikan bahwa sistem drainase belum mampu mengakomodasi debit pada kondisi hujan ekstrem. Kesimpulannya, kapasitas saluran drainase eksisting tidak memadai untuk menampung debit total secara optimal, terutama pada hujan intensitas tinggi. Oleh karena itu, direkomendasikan peningkatan kapasitas saluran melalui pelebaran atau pendalaman, pengendalian sedimentasi secara rutin, serta penerapan sistem drainase terintegrasi seperti pemisahan saluran limbah domestik dan limpasan hujan serta pembangunan infrastruktur drainase berkelanjutan.
ORGANIC REMOVAL IN DOMESTIC WASTEWATER USING ANAEROBIC TREATMENT SYSTEM-MBBR WITH FLOW RECIRCULATION RATIO AND INTERMITTENT AERATION Michael Subroto; Wisnu Prayogo; Prayatni Soewondo; Ahmad Soleh Setiyawan
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 3, OCTOBER 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i3.12776

Abstract

Aim: The modified Small-scale Domestic Sewage Treatment Plant (SDSTP) reactor with anaerobic fixed bed- aerobic Moving Bed Biofilm Reactor (MBBR) is implemented to find the optimum condition for organic degradation related to recirculation and intermittent aeration practices with the purpose to comply with the governmental regulation standard.  Methodology and Results: This research have been done with the artificial wastewater with characteristic similar to the sewage treatment plant (STP) of Telkom company with ratio C:N:P of characterized domestic wastewater is 252.40:85.42:3.01 that consists of glucose, NH4Cl, potassium dihydrogen phosphate, potassium nitrate, and sodium nitrite (NaNO2). Reactor design related with attached biomass in media until 2478.56 mg MLVSS.L-1 with the growth kinetics rate (μ) of 0.4691 day—1. The artificial wastewater is applied the determine the optimum variation of flow recirculation and periodic aeration in specific Hydraulics Retention Time (HRT) and Organic Loading Rate (OLR). In this research, the optimum recirculation ratio for organic degradation is 26.40 L.h-1 and the optimum aeration frequency variation is  12 hours in intermittent frequency with the maximum efficiency of organic degradation of 76.10% with the degradation efficiency real domestic wastewater application from STP Telkom company is 83.09%. Conclusion, significance and impact study:  Stover-Kincannon model is the best model with highest accuracy rate to model the degradation performance of organic compounds by the anaerobic fixed bed- aerobic MBBR SDSTP with determination coefficient 0.8623 and also degradation coefficient 38.121 day-1 compared with other models studied in this research.
Peningkatan Kualitas Layanan Pembelajaran Flipped Classroom melalui Penguatan Literasi Digital Pada Dosen Fakultas Teknik Universitas Negeri Medan, Indonesia Sarwa Sarwa; Ridho Azahar; Ummu Salamah; Heri Franata Sitorus; Ahmad Zulfikar; Riansayah Putra; Al Fatahillah; Liana Atika; Wisnu Prayogo
Jurnal Kreativitas Pengabdian Kepada Masyarakat (PKM) Vol 9, No 5 (2026): Volume 9 Nomor 5 (2026)
Publisher : Universitas Malahayati Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jkpm.v9i5.25386

Abstract

ABSTRAK Perkembangan teknologi digital menuntut dosen untuk memiliki literasi digital yang memadai dalam mendukung implementasi pembelajaran inovatif, khususnya model flipped classroom. Namun, masih terdapat kesenjangan kemampuan dosen dalam memanfaatkan teknologi pembelajaran secara optimal yang berdampak pada kualitas layanan pembelajaran. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan literasi digital dosen melalui program pelatihan dan pendampingan dalam implementasi flipped classroom pada dosen di Fakultas Teknik, Universitas Negeri Medan. Metode yang digunakan meliputi pelatihan, praktik langsung, serta evaluasi melalui desain pre-test dan post-test. Analisis dilakukan secara deskriptif dan inferensial untuk melihat perubahan sebelum dan sesudah kegiatan. Hasil kegiatan menunjukkan adanya peningkatan signifikan pada literasi digital dosen, dari rata-rata 47,19 ± 5,71 menjadi 83,07 ± 11,47. Uji t berpasangan menunjukkan perbedaan yang sangat signifikan (p 0,001) dengan ukuran efek yang sangat besar (Cohen’s d = 2,70). Selain itu, hasil evaluasi menunjukkan peningkatan kemampuan dosen dalam merancang dan mengimplementasikan pembelajaran flipped classroom secara lebih efektif. Temuan ini menunjukkan bahwa program pelatihan dan pendampingan literasi digital memberikan dampak positif terhadap peningkatan kualitas layanan pembelajaran. Kegiatan ini menegaskan pentingnya penguatan kompetensi digital dosen sebagai strategi dalam meningkatkan efektivitas pembelajaran di era digital serta dapat direplikasi pada konteks institusi lain. Kata Kunci: Literasi Digital, Flipped Classroom, Pengabdian Kepada Masyarakat, Dosen, Peningkatan Kapasitas.  ABSTRACT The rapid development of digital technology requires lecturers to possess adequate digital literacy to support innovative learning models, particularly the flipped classroom approach. However, gaps remain in lecturers’ ability to optimally utilize educational technology, which affects the quality of learning services. This community service program aims to enhance lecturers’ digital literacy through structured training and mentoring in the implementation of flipped classroom practices at the Faculty of Engineering, Universitas Negeri Medan. The methods included training sessions, hands-on practice, and evaluation using a pre-test and post-test design. Data were analyzed using descriptive and inferential approaches to assess changes before and after the intervention. The results indicate a significant improvement in lecturers’ digital literacy, with the mean score increasing from 47.19 ± 5.71 to 83.07 ± 11.47. Paired t-test analysis revealed a highly significant difference (p 0.001) with a very large effect size (Cohen’s d = 2.70). In addition, the evaluation results demonstrate improved lecturer capacity in designing and implementing flipped classroom learning more effectively. These findings confirm that digital literacy training and mentoring have a positive impact on improving the quality of learning services. This program highlights the importance of strengthening lecturers’ digital competencies as a strategic approach to enhancing learning effectiveness in the digital era and provides a replicable model for similar institutional contexts. Keywords: Digital Literacy, Flipped Classroom, Community Service, Lecturer, Capacity Building.
Co-Authors Aarce Tehupeiory Ahmad Daudsyah Imami Ahmad Zulfikar Ainan Azka Al Fatahillah Alam, Firdha Cahya Ani Purwanti Ani Purwanti Annisa Fillaeli Annisa Zahra Desi Paskalia Tinambunan Desy Rahmadani Telaumbanua Dhuhan Dion Awfa Edo Barlian Edo Barlian Edo Kharima Army Eka Sulistyaningsih Evi Eri Narita Faria, Niswatun Fikri Damara Fitria, Laili FITRIA, NOVI Hansen Anugrah Malau Harry Wibowo I Wayan Koko Suryawan I Wayan Koko Suryawan I Wayan Koko Suryawan Imelda Masni Juniaty Sianipar Istiqomah Shariati Zamani Iva Yenis Septiariva Janter Pangaduan Simanjuntak Janter Pangaduan Simanjuntak Joy Eklesia Pasaribu Juliana Fisaini Juliana Fisaini Liana Atika M. Faisi Ikhwali M. Isya M. Isya Mega Mutiara Sari Mega Mutiara Sari Mega Mutiara Sari Meuthia Fadila Michael Subroto Muammar Qadafi Muhammad Meiko Cahya Anugrah Muhammad Yusuf Nahesson Hotmarama Panjaitan Nasrul Putra Nathanael Sitanggang Nathanael Sitanggang Novi Fitria Novi Fitria Novi Kartika Sari Novriadi Nur Fitri Nur Novilina Arifianingsih Nurul Mawaddah Pratiwi Claudia Gaina Prayatni Soewondo Prayatni Soewondo Putri Lynna A. Luthan Putri Lynna A. Luthan Putri Lynna A. Luthan Putri Lynna Luthan Qurrotin Ayunina Maulida Okta Arifianti Rachmat Mulyana Rachmat Taufiqy Rachmat Taufiqy Resarizki Utami Riansayah Putra Ridho Azahar Rifka Noor Azizah Risma Pradina Kusuma Royana Chairani Sakkot Matua Gong Hasibuan Sapta Suhardono Sarra Rahmadani Sarwa, Sarwa Setiyawan, Ahmad Soleh Sitepu Amrina Rosyada Sitepu Amrina Rosyada Sitorus, Heri Franata Suryawan, I Wayan Koko Syahreza Alvan Tiara Gultom Trian Saputri Ulli Kadaria Ummatin, Kuntum Khoiro Ummu Salamah Vemi Ridantam Vemi Ridantam Yacub, Mirzal Yulisa Putri Yusria Darma Zhilli Izzadati Khairuni