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All Journal Nusantara Science and Technology Proceedings Environmental Science and Engineering Conference Proceeding AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Jurnal Sains dan Teknologi Envirotek : Jurnal Ilmiah Teknik Lingkungan Jurnal Teknik Mesin, Industri, Elektro dan Informatika Jurnal Sains Student Research Serambi Engineering Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Mohamad Mirwan
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Veterinary Other

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PEMANFAATAN LUMPUR IPAL DAN SERBUK GERGAJI MENJADI BRIKET ALTERNATIF Mohamad Mirwan; Insanul Mufti F
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol 12 No 2 (2020): Envirotek : Jurnal Ilmiah Teknik Lingkungan
Publisher : Program Studi Teknik Lingkungan, Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (280.734 KB) | DOI: 10.33005/envirotek.v12i2.77

Abstract

Organic materials derived from wood industry waste such as wood sawdust can be used as an alternative source of energy because the calorific value is quite high, which is 4368 cal /g. The purpose of this study is to determine the best characteristics and composition of alternative briquettes. The variables used are briquette composition and different types of adhesive. The results showed that briquettes with the composition ratio of WWTP and Wood Sawdust 1:2 with the addition of adhesive 40% molasses had a heating value of 4185,90 cal/g. Based on Briquettes in this study. The type of test that has not met the quality standard is the compressive strength test of 43.88 kg/cm². These results have not met the quality standards in SNI 4931: 2010 with the classification of type B briquettes with compressive strength test between 50-60 kg/cm².
Application of Composting Technology to Reduce Organic Waste by Utilizing Black Soldier Fly (Hermetia illucens) Larvae Ryzki Marcella Amalia Triadi; Mohamad Mirwan; Aulia Ulfah Farahdiba; Putri Redita Rositasari; Salsabila Prawardani
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2715

Abstract

The larvae BSF (black soldier fly) can be used as an insect-based organic waste recycling technology. Not only for recycling organic waste, BSF larvae (black soldier fly) can also convert organic waste into a product in the form of compost. With so many waste problems, this technology is the most relevant way to deal with the problem. The purpose of this study was to examine the use of BSF (Black Soldier Fly) larvae in the composting process and to find out how much BSF (Black Soldier Fly) larvae were able to reduce organic waste. This study used an experimental method using 16 reactors containing 10000 larvae eggs in each reactor and using a variety of mixed waste. The variation used is the initial weight, in this study used an initial weight of 3 kg and 4 kg and treatment was carried out 2 times. The frequency of feeding was carried out every 3 days and then the weight reduction of the remaining waste in the reactor was measured after harvesting. The average percentage reduction in treatment 1 with an initial weight of 3 kg of waste is 18.25% while the initial weight of 4 kg of waste is 53.65%, different in treatment 2 the average percentage of waste reduction at an initial weight of 3 kg is 60 .25% and at 4 kg by 30.25%. The results of the compost will be compared with the quality standard of SNI 19-7030-2004, the results of the study show that treatment variation 2 at the initial weight of 3 kg of waste is closest to the quality standard based on the value of pH, water content, C-organic, N-organic and C ratio /N.
Studi Peningkatan Mutu Biobriket dengan Penambahan Paper Waste dan Minyak Jelantah Mohamad Mirwan; Nova Ariyanti
Prosiding ESEC Vol. 3 No. 1 (2022): Seminar Nasional (ESEC) 2022
Publisher : Prosiding ESEC

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Waste processing that is less than optimal causes the generation of large amounts of waste so that action is needed to process it into useful new products, for example into briquettes. The implementation of adding raw materials in making briquettes with waste that has low economic value is expected to improve the quality of briquettes. Paper waste and used cooking oil have the potential to be processed as additional raw materials in the manufacture of briquettes in producing alternative fuels. Based on the results of characteristic testing, the quality of the briquettes increased after the addition of paper waste and used cooking oil. The water content of briquettes from 5,12% decreased to 1 – 2%. The ash content of briquettes from 10,01% decreased to 5 – 7%. The calorific value of briquettes from 4902 cal/g increased to 5200 – 5700 cal/g. The compressive strength of briquettes from 4,38 kg/cm2 increased to 5,51 – 9,48 kg/cm2. The immersion treatment of used cooking oil has an optimum time limit because it can affect the solidity of the charcoal when testing the compressive strength. The addition of paper waste and used cooking oil to the combustion rate increases the combustion power of briquettes and the flame lasts longer so that the combustion rate range obtained is small. The emission of carbon monoxide (CO) produced by the briquettes in this study is relatively low because it is still far below the required quality standards.
Potensi Reduksi Sampah Domestik PT. X Surabaya Berdasarkan Komposisi Sampah Brillyan Kusuma Pradani; Mohamad Mirwan; Muhammad Firdaus Kamal; Andrea Thrisiawan Pradhana
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 3 No. 1 (2024): Maret : JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v3i1.3281

Abstract

Waste reduction efforts need to be made to reduce the burden of landfill in processing waste. The absence of a study on the potential for reducing domestic waste at PT X is an obstacle for the company to determine the right waste management scenario. PT X's waste management still adheres to the collection, transportation, and disposal system.  The test of this study is to analyze the potential waste reduction that can be done by PT X. This study was carried out by collecting waste transportation data and waste composition data obtained through the SNI 19-3964-1995 method. Waste transportation data will be reduced by waste composition data that has the potential to be used for kembai. The average waste transported to landfill is 6480 kg / month with the composition of waste dominated by 26.09% of food waste and plastic waste. Total waste that can be reduced by 52.07% by managing organic waste into compost and collecting and selling waste that still has a selling value. By carrying out this management, the average waste disposal of PT X can be reduced to 3374 kg / month.  
Evaluasi Instalasi Pengolahan Air Limbah (IPAL) Domestik Pada Unit Pengolahan Biologis Terhadap Parameter BOD Di Industri Pakan Ternak Surabaya Sekar Huwaidah Qatrunada; Mohamad Mirwan; Muhammad Firdaus Kamal; Andrea Thrisiawan Pradhana
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 3 No. 1 (2024): Maret : JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v3i1.3282

Abstract

Domestic wastewater can be sourced from industrial activities, one of which is the Feedmill Industry. The Surabaya Feedmill Industry has been treating domestic wastewater using a WWTP. The management of domestic wastewater is based on the Technical Approval (PERTEK) of Wastewater Utilization for Application to Land. Based on the results, there are parameters that do not fulfill the quality standards. The parameter is Biological Oxygen Demand (BOD), an evaluation is needed to enhanced WWTP performance. The purpose of this research is calculating the percent removal of BOD, COD and TSS parameters in the biological treatment unit and identifying factors that can affect the removal of BOD parameters in the existing conditions of the biological treatment unit in the Surabaya Feedmill Industry. The method used is a literature study using the Ludwig Sasse equation. In the calculation of the average water discharge of 5.93 m³/day, only 29.6% of the planned discharge. The results of the calculation of HRT in biological unit processing have not met the design criteria, except for the aerobic biofilter. The BOD/COD ratio is 0.33. According to the existing calculation, the final result for the BOD parameter is 5.11 mg/L, COD is 24.38 mg/L and TSS is 37.33 mg/L. The design air requirement is 27.64 m³/day. Other factors that affect BOD removal are Dissolved Oxygen (DO) levels in the Aerobic Biofilter, nutrient requirements, and Food to Microorganism (F/M).
Penurunan TSS, COD, dan Total-Nitrogen pada Air Lindi dengan Metode Constructed Wetland Tanaman Typha Angustifolia Thineza Ardea Pramesti; Mohamad Mirwan
INSOLOGI: Jurnal Sains dan Teknologi Vol. 2 No. 4 (2023): Agustus 2023
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v2i4.2309

Abstract

Landfill is a place to dispose of waste. There are still many landfills in Indonesia that use open dumping. Klotok Landfill in Kediri City uses a sanitary landfill where if you use the sanitary landfill method, leachate can be accommodated in a shelter. Leachate comes from waste decomposition. One of the leachate treatments is constructed wetlands. Constructed wetlands are treatment with a design that copy the natural system of plants to treat wastewater by involving several process mechanisms such as physics, chemistry, and biology. In this study, Typha angustifolia were used because these plants were considered capable of processing leachate. Using subsurface flow and continuous process is expected to reduce TSS, COD, and Total-Nitrogen. Sampling time was carried out in the 6th, 8th, 10th, and 12th, and 14th days. The results of TSS, COD, and Total-Nitrogen obtained were highest at 5L/day discharge with the 14th day sampling reaching 96.30%, 90%, and 89.16%. The average temperature and pH results obtained reached 26.92 ℃ and 7.9. The temperature and pH in this study are still within the optimal range for constructed wetland processing methods.
Pengaruh Bentuk Impeller pada Proses Koagulasi Flokulasi Terhadap Pola Aliran dan Penyisihan TSS Komang Mega Ilda Utari; Mohamad Mirwan
INSOLOGI: Jurnal Sains dan Teknologi Vol. 2 No. 4 (2023): Agustus 2023
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v2i4.2483

Abstract

Environmental pollution caused by wastewater has reached alarming levels, especially in large cities like Surabaya, where household wastewater is a major contributor. The coagulation-flocculation method is used to treat wastewater by precipitating particles from the wastewater. The use of mechanical impellers plays a crucial role in this process. This study analyzes the influence of impeller design, mixing time, and impeller rotation speed on the efficiency of Total Suspended Solid (TSS) removal and flow patterns in coagulation-flocculation. An impeller with a blade angle of 30° produces a wider and more effective flow pattern compared to a 60° angle. The number of blades and the blade angle affect TSS removal efficiency, with a 6-blade impeller at 30° angle achieving the highest efficiency. The optimal mixing time is 1 minute for coagulation and 20 minutes for flocculation. The optimal impeller rotation speed is 100 rpm for coagulation and 60 rpm for flocculation. The findings provide practical guidelines for enhancing the efficiency of domestic wastewater treatment.
Evaluasi Efektivitas Instalasi Pengolahan Air Limbah (IPAL) pada Industri Pengolahan Makanan di Kabupaten Sidoarjo Delia Anisa Putri; Mohamad Mirwan
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 3 No. 1 (2025): Januari: Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik S
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v3i1.677

Abstract

iquid waste produced by the food industry has complex characteristics that depend on production capacity. Liquid waste treatment is carried out physically, chemically, and biologically to reduce the concentration of pollutants that pose environmental problems. PT. X is one of the companies that produces food products. The company has been implementing an environmental management system, particularly wastewater treatment, using WWTP technology. The research aims to assess the performance of liquid wastewater treatment processes at PT. X. The research method used is descriptive, with data collection through direct observation and sampling at the WWTP outlet of PT. X. After testing, the research results show that all main parameters produced by PT. X's WWTP comply with the quality standards of the East Java Governor Regulation No. 72 of 2013. Overall, the WWTP performance remains good.
Combination of Aeration-Adsorption Using Diffuser Aerator and Palmyra Palm Shell Activated Carbon For Groundwater Quality Improvement Utami, Anggit Salis Media; Mohamad Mirwan; Rizka Novembrianto
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study examines the use of a combined aeration-adsorption process utilizing activated carbon derived from Borassus flabellifer (palmyra palm shell) to improve groundwater quality. The aeration process increases dissolved oxygen (DO) levels, facilitating the oxidation of metal contaminants such as iron (Fe) and manganese (Mn). Meanwhile, the activated carbon is used to adsorb any remaining contaminants that are not fully oxidized. The results show that with a 60-minute aeration time, the DO concentration increased to 6.6 mg/L, and Fe and Mn concentrations were reduced by 53.6% and 7.7%, respectively. In the adsorption phase, optimal conditions were achieved at a flow rate of 10 L/h and an adsorption media height of 45 cm, resulting in Fe removal of 63.19%, Mn removal of 99.25%, TDS reduction of 15.51%, and TOC reduction of 17.61%. These findings support the use of the combined aeration-adsorption process as a more environmentally friendly and efficient method for groundwater treatment.
Status Kinerja Pengolahan Lingkungan Hidup (SKPL) Limbah B3 Industri Besi PT X, Kota Sidoarjo Ghany Firmansyah; Mohamad Mirwan
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 1 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i1.720

Abstract

PT X is an iron industry in Sidoarjo that produces Hazardous and Toxic Material waste. This industry has several Temporary Shelters (TPS) for B3 waste to store its waste. However, supervision based on the regulation of Permen LHK no. 6 of 2021 shows that there are several inconsistencies in B3 waste management and waste storage procedures. This study was conducted to evaluate and determine the correct management of B3 waste, as well as to correct the inconsistencies identified in the SKPL supervision program.
Co-Authors Andrea Thrisiawan Pradhana Arnetha Seputra Aulia Ulfah Farahdiba Brillyan Kusuma Pradani Delia Anisa Putri Devitasari, Lucia Adelina Ghany Firmansyah Insanul Mufti F Komang Mega Ilda Utari Muhammad Firdaus Kamal Navisa Ika Irmayanti Nova Ariyanti Putri Redita Rositasari Ryzki Marcella Amalia Triadi Salsabila Prawardani Sekar Huwaidah Qatrunada Thineza Ardea Pramesti Utami, Anggit Salis Media