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Mardyanto, Mas Agus
Departemen Teknik Lingkungan Institut Teknologi Sepuluh Nopember Surabaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Education Engineering Environmental Science Mathematics

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Perencanaan Sistem Pemanenan Air Hujan sebagai Alternatif Air Bersih di Rusunawa Sumur Welut dan Keputih Surabaya Halif Akbar Ibadah; Mas Agus Mardyanto
Jurnal Teknik ITS Vol 12, No 1 (2023)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23373539.v12i1.109226

Abstract

Kota Surabaya merupakan kota metropolitan yang jumlah penduduknya diproyeksikan meningkat setiap tahunnya. Seiring berjalannya waktu terjadinya kelangkaan air bersih untuk memenuhi kebutuhan masyarakat akan terjadi jika penggunaan air bersih tidak dikelola dengan baik. Pemanenan air hujan merupakan cara yang digunakan untuk menangkap dan mengelola air hujan untuk dimanfaatkan kembali dan untuk melakukan pemanenan air hujan dibutuhkan sistem yang baik agar pemanenan air hujan dapat dilakukan secara maksimal. Data yang digunakan pada perencanaan kali ini yaitu data primer berupa observasi lapangan dan data sekunder berupa denah rusunawa, penggunaan air, jumlah penghuni, data curah hujan harian 10 tahun terakhir, dan jumlah kamar. Hasil dari perencanaan sistem pemanenan air hujan ini yaitu pada sistem pemanenan air hujan Rusunawa Keputih dapat menghemat efisiensi biaya penggunaan air selama musim hujan dengan rata-rata penghematan pada Blok A sebesar Rp 214.616,38, Blok B sebesar Rp. 347.309,11, Blok C sebesar Rp. 296.090,93, dan Blok D sebesar Rp. 205.196,38. Sedangkan Rusunawa Sumur Welut dapat menghemat biaya penggunaan air bersih selama musim hujan tiap blok dengan rata-rata estimasi penghematan biaya pada Blok A sebesar Rp 437.015,28, Blok B sebesar Rp. 316.217,28, Blok C sebesar Rp. 301.337,28, Blok D sebesar Rp. 387.467,28 dan Blok E sebesar Rp. 296.909,94. Total biaya yang dikeluarkan dalam perencanaan sistem pemanenan air hujan pada Rusunawa Keputih sebesar Rp 30.000.000,00 sedangkan untuk Rusunawa Sumur Welut menghabiskan total biaya sebesar Rp 39.000.000,00.
Kajian Risiko Lingkungan pada Pengelolaan Bahan Berbahaya dan Beracun (B3) dan Limbah B3 Industri Kimia di PT XYZ dengan Metode Failure Mode and Effect Analysis (FMEA) Hendriana, Tasya Afrida; Mardyanto, Mas Agus
Jurnal Teknik ITS Vol 12, No 3 (2023)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23373539.v12i3.121683

Abstract

Adanya peningkatan aktivitas industri berisiko untuk meningkatkan kerusakan lingkungan, baik dari eksploitasi bahan baku, aktivitas produksi maupun dari buangan limbah akibat proses produksi. Oleh karena itu peningkatan aktivitas industri harus dibarengi dengan peningkatan upaya pengelolaan lingkungannya. Penelitian ini mengkaji risiko lingkungan yang dapat diakibatkan dari suatu sistem pengelolaan B3 dan limbah B3 di PT XYZ. PT XYZ merupakan perusahaan yang bergerak di bidang industri kimia. Saat ini, PT XYZ sedang berfokus pada pengembangan efisiensi pengelolaan limbahnya, terutama limbah B3. Oleh karena itu, untuk meningkatkan sistem pengelolaan limbah industri di PT XYZ sebagai upaya dan komitmen perusahaan dalam melaksanakan pengelolaan lingkungan, diperlukan adanya kajian risiko dengan pendekatan Failure Mode and Effect Analysis untuk mengidentifikasi risiko serta akibat yang dapat ditimbulkan dari sistem pengelolaan B3 dan limbah B3 tersebut. Metode yang digunakan pada penelitian ini adalah Fishbone Analysis dan FMEA, dimulai dengan mengidentifikasi risiko melalui identifikasi kegagalan, penyebab, dan efek potensial dari sistem pengelolaan B3 dan limbah B3 dengan menggunakan diagram fishbone. Dilanjutkan dengan perhitungan Risk Priority Number (RPN) berdasarkan tingkat severity, occurrence, dan detection menggunakan metode FMEA. Selanjutnya dilakukan penyusunan skenario pengendalian risiko berdasarkan hasil identifikasi dan perhitungan RPN. Metode FMEA dipilih karena metode ini dapat menganalisis hampir setiap risiko yang didapat dan dapat mempertimbangkan risiko dalam jumlah besar. Hasil yang diperoleh dari penelitian ini berdasarkan observasi, wawancara, dan data sekunder dari perusahaan menunjukkan potensi kegagalan terbesar berdasarkan nilai Risk Priority Number (RPN) pada pengelolaan B3 terjadi pada item Oli, yaitu berupa tumpahan atau ceceran Oli dengan nilai RPN sebesar 75. Sedangkan, pada pengelolaan limbah B3, potensi kegagalan terbesar yaitu keluarnya gas atau limbah cair B3 (Ammonium Hidroksida) dengan nilai RPN sebesar 50. Adapun mitigasi risiko yang diusulkan berupa engineering control, perbaikan manajemen, dan peningkatan deteksi kegagalan.
Surface Groundwater Pollution Dynamics Over 2015-2020 in the Salt Drying Pond of Pademawu Subdistrict, Madura, Indonesia Wisnu Arya Gemilang; Ulung Jantama Wisha; Mas Agus Mardyanto
Geosfera Indonesia Vol. 7 No. 1 (2022): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v7i1.28898

Abstract

Pamekasan coastal area is the center of salt production concentrated in the Pademawu subdistrict with the ponds area of 740.96 ha. The sufficiently close distance of salt ponds to settlement areas allows several issues, such as shallow groundwater salinization. This study aimed to determine the salt pond’s degradation over five years (2015-2020) and its influence on the salinization issue in Pademawu. We compare groundwater quality parameters (conductivity, TDS, the depth of shallow surface groundwater, and salinity) surveyed in 2015 and 2020, correlated to salt pond area alterations. Over five years of measurement, it was found that conductivity declined, reaching 2779.94 µS/cm. Based on TDS deterioration, groundwater transformed from brackish to freshwater in 2020. By contrast, the depth of shallow groundwater-surface increased by almost one meter. The freshwater area also increased by 22% over five years based on conductivity classification. Groundwater quality dynamics are related to the alteration of the salt pond area. On the other hand, the significant increase in rainfall intensity, which is not beneficial for salt agriculture, results in the salt pond area deterioration, thereby declining surface groundwater salinity in Pademawu due to the less interaction between Cl and groundwater within aquifers. Although the groundwater pollution induced by seawater intrusion and salinization declined in 2020, re-organizing the distance between salt ponds and the settlement area in Pademawu is crucial to minimize further groundwater pollution. Keywords : Dynamics; pollution; groundwater; salt agriculture; Pademawu Copyright (c) 2022 Geosfera Indonesia and Department of Geography Education, University of Jember This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License
Study of Failure Risk on the Utilities Unit of Oil Production PT Kilang Pertamina International RU IV Cilacap by Using Failure Mode and Effect Analysis (FMEA) Method Sugiarto, Rachmat; Mardyanto, Mas Agus
Jurnal Teknik ITS Vol 14, No 1 (2025)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23373539.v14i1.145054

Abstract

The Utilities Unit at Pertamina RU IV Cilacap is all materials/media/facilities needed to support refinery processing operations such as electricity, steam, cooling water, clean water, compressed air, fuel, and raw water. The Utilities Unit is one of the units that has an important role in oil production at PT Pertamina International Refinery RU IV Cilacap, so it is necessary to maintain the quality and quantity of production so that there is no sudden shutdown in the Utilities Unit. Failures that may occur can be detrimental in terms of very expensive equipment repairs and can hinder the process of existing facilities such as the cessation of water treatment. Using the Fishbone Analysis and Failure Mode and Effect Analysis (FMEA) method, this research determines the risk of failure in the petroleum processing process at the Utilities unit of PT Pertamina International RU IV Cilacap Refinery. The greatest risk of failure that arises based on the calculation of the Risk Priority Number (RPN) value will be used to determine alternative recommendations for improvements. The source of failure is obtained from 2 factors, namely from the machine and material factors. The Material factor is characterized as an aspect of product quality determined by the parameter indicators of each product, while the machinery factor can be classified as an aspect of the operating conditions of each unit. The biggest risk of failure based on the Risk Priority Number (RPN) results in the Sea Water Desalination unit with a value of 60 (low category). The suggested mitigation is by checking and monitoring chemical injections and cleaning evaporators.
Climate Change and Its Effect on Temperature and Precipitation Trends: Case Study in Surabaya Using RegCM5 Asyam Mulayyan Dary; Mas Agus Mardyanto; Joni Hermana; Chairul Imron
(IJCSAM) International Journal of Computing Science and Applied Mathematics Vol. 11 No. 1 (2025)
Publisher : LPPM Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24775401.ijcsam.v11i1.4308

Abstract

Climate change is increasingly driving extreme weather events, yet its regional impacts remain complex. This study employs the RegCM5 model, driven by ERA5 reanalysis data, to simulate high-resolution (5 km) climate dynamics in Surabaya, Indonesia from December 2018 to November 2023. Validated against gridded observational datasets and analyzed via Earth's energy balance, the results reveal a steady rise in both top-of-atmosphere and surface energy imbalances, corresponding with record-breaking increases in maximum and minimum temperatures by approximately 1.5°C and 1°C from 2020 to 2023. While monthly precipitation patterns were inconsistent, daily observations indicate a significant increase in high-intensity precipitation events. These findings offer critical insights into evolving regional climate impacts and inform local adaptation and mitigation strategies.
Forward Problems Solving of Groundwater Flow using Stochastic Groundwater Vistas Method Pramudita Triatmojo; Mas Agus Mardyanto
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 10 No. 2 (2021): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.10.2.2021.525

Abstract

In the forward problems, the hydraulic head value can be found by knowing the value of the groundwater parameter. Parameters of groundwater such as hydraulic conductivity, vary over space due to the variation of aquifer properties. Consequently, it is difficult or almost impossible to treat these kinds of variability by a deterministic approach because there is no exact value to be used as input for a parameter. The objective of this research was to obtain a mathematical model of groundwater flow made with the Groundwater Vistas Program that is in accordance with the physical model. Mathematical modeling of groundwater flow using the Groundwater Vistas Program with a stochastic approach and Monte Carlo simulation method where the input data (hydraulic conductivity, hydraulic head) is obtained from the physical model. Results showed that the sum of squares value from the scatter plot diagram of all realization points had a very small value (close to or even zero). The residual mean diagram showed the error value of all realizations had a very low value close to zero. The calculated head value (computed) compared with the results of the observation had a fairly small difference value (ranging from 0.0006−0.009 m). These results were considered quite good because in modeling it is impossible to get modeling results that are exactly the same as those being modeled. The results show that Groundwater Vistas can be used for modeling with very small errors and it can estimate values of hydraulic heads quite well.
Analysis of Environmental Aspects and Impacts as Reference for Planning Environmental Management System Programs in The Upstream Oil and Gas Industry (Case Study: “X” Area on P Company) Bima Ilham Rubiono; Mas Agus Mardyanto
Journal Research of Social Science, Economics, and Management Vol. 6 No. 1 (2026): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v6i1.1580

Abstract

Upstream oil and gas industry activities have complex operational characteristics and the potential to generate various significant environmental aspects and impacts. Activities such as drilling, fluid processing, and waste management can affect the quality of water, air, soil, and ecosystems surrounding operational areas. Therefore, a systematic approach is required to identify and evaluate environmental aspects and impacts as a basis for planning effective and sustainable environmental management system (EMS) programs that comply with applicable environmental regulations. This study aimed to analyze environmental aspects and impacts associated with upstream oil and gas operations and formulate priority EMS programs through risk assessment and multi-criteria decision analysis. The methods used included interviews, field observations using questionnaires and checklists, and literature reviews. Data were analyzed descriptively and analytically to identify environmental aspects and impacts based on company policies and applicable regulations, followed by risk assessment using the State-Owned Enterprises risk matrix to determine risk levels. The Analytical Hierarchy Process (AHP) method was also applied to prioritize proposed environmental program plans. The results indicated that P Company’s operational activities involved significant environmental aspects, including air emissions, liquid waste generation, hazardous waste management, noise emissions, potential oil spills, soil and water quality degradation, and contributions to greenhouse gas emissions. Based on the risk assessment results, several activities were categorized as having moderate to high risk levels, particularly those related to hydrocarbon spills and hazardous waste management. The risk controls implemented by the company were effective in reducing environmental risk levels to moderate and low categories.
Co-Authors Adhi Yuniarto Asyam Mulayyan Dary Bima Ilham Rubiono Chairul Imron Fairuz Nadia Fauziah Raya Shinta Halif Akbar Ibadah Hendriana, Tasya Afrida Hermawan, Wirda Pratomo Bagus Januar Catur Putranto Januar Catur Putranto Joni Hermana Made Urmylla Lyyasintha Sunaya Meralda Rose Dewi Neneng Amel Hizni’am Nieke Karnaningroem Pramudita Triatmojo Sugiarto, Rachmat Ulung Jantama Wisha Ulung Jantama Wisha Wisnu Arya Gemilang Wisnu Arya Gemilang