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Rosariawari, Firra
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Journal : Serambi Engineering

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Efektifitas Metode Elektrokoagulasi Dengan Penambahan Medan Magnet Dalam Menyisihkan TSS dan COD Air Limbah Industri Rumah Potong Hewan Cahyani, Nurilita Amalia; Rosariawari, Firra
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Slaughterhouse effluent is high in organic matter and suspended solids and requires treatment before direct discharge. We are combining electrocoagulation technology and magnetic fields as a treatment method to assess their impact on the effectiveness of TSS and COD removal. The aim of this study is to determine the effect of current strength and treatment contact time on the pH of the effluent and the efficiency of TSS and COD removal from slaughterhouse effluent. The variables in this study include current strengths of 1 ampere, 3 amperes and 5 amperes with treatment contact times of 30 minutes, 60 minutes, 90 minutes and 120 minutes. From the results of electrocoagulation experiments with and without a magnetic field, it is known that the magnetic field has the ability to accelerate the sedimentation process and remove suspended solids more effectively. The pH of the effluent increased with each increase in current and contact time. The best removal results were obtained in the electrocoagulation process with a magnetic field, which had a TSS removal of 96.06% and a COD removal of 89.37% at a pH of 8.3, using a current of 3 amperes and a contact time of 120 minutes.
Pemanfaatan Ampas Tebu Dan Kulit Pisang Kepok Sebagai Karbon Aktif Pada Proses Adsorpsi Untuk Menyisihkan Kadar Fe dan Mn Addzikri, Ahmad Iqbal; Rosariawari, Firra
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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The increasing problem of water pollution due to high levels of heavy metals which are often found in well water in various regions affects water quality which can have a negative impact on public health and the environment. Therefore, an effective solution is needed to reduce this contamination. One promising solution is the use of activated carbon derived from organic materials, such as sugarcane bagasse and kepok banana peel. This research aims to analyze the optimal dose and effectiveness of activated carbon produced from sugar cane bagasse and kepok banana peel which is activated with 5% H₃PO₄ in the adsorption process to reduce iron (Fe) and manganese (Mn) levels in well water. The research was carried out with varying doses of activated carbon of 4 grams, 6 grams, and 8 grams, as well as varying contact times of 20, 30, 40, 50, and 60 minutes. The results of the research show that activated carbon from sugar cane bagasse and kepok banana peel has a significant ability to remove these two heavy metals with varying effectiveness. The results of this research provide a sustainable and environmentally friendly alternative for water treatment and open up opportunities for utilizing organic waste as raw materials in water treatment methods that can improve the quality of contaminated well water.
Assessment of Black Carbon in University: Emphasis on Different Indoor Microenvironment, Infiltration Factor, and Exposure Sholikin, Mohamad; Rosariawari, Firra; Jawwad, Muhammad Abdus Salam
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Black carbon (BC), a harmful air pollutant, poses significant risks to human health. As students spend most of their time indoors and a third in school, the educational environment deserves special attention; however, most previous research has focused on the assessment of the pollutant itself in the classroom. Therefore, this work aims to extend the characterisation of BC in universities by considering different indoor microenvironments, infiltration factors and estimating exposures for healthy children and adults. In this study, BC concentrations were measured in four room types: cafeteria, gym, office room and classroom. The average BC observed in the cafeteria (599 ng m-³), gymnasium (987 ng m-³), office (830 ng m-³) and classroom (548 ng m-³) were. Of these, the gymnasium had the highest mean concentration, consistent with its high indoor/outdoor (I/O) ratio of 1.11, indicating significant indoor sources of BC. Exposure levels correlated directly with BC concentrations, with adults having higher deposition rates compared to children. These results provide insights into the spatial variation of BC in indoor environments, with implications for air quality control and health risk assessment for occupants.
Analisis Pengolahan Sampah Pada Tempat Pengolahan Sampah Terpadu (TPST) Selopuro Kabupaten Ngawi Kurnia Sari, Hanna Putri; Rosariawari, Firra; Maroeto; Krisnawati, Anik
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Waste is the residual result of daily human activity that is no longer wanted and that needs to go through a good treatment process so that it does not cause problems for the environment. The increase in waste generation is due to the high consumption of people and the increase in population growth. The increase in the amount of waste generation will certainly lead to an increase in the amount of waste entering the final processing site or landfill and will affect the life of the landfill itself. Therefore, the construction of the TPST is a solution to reduce the amount of waste going to the landfill and increase the amount of integrated waste processing in Ngawi Regency. This study aims to analyse the waste processing process at TPST Selopuro, Ngawi Regency and to see the results of the waste processing process at TPST Selopuro and the waste processing methods applied at TPST Selopuro. The data collection method includes primary and secondary data, and the results include data on incoming waste generation and data on the results of the waste processing process at the integrated waste management site.
Analisis Dampak Lingkungan Emisi Gas Rumah Kaca Menggunakan Metode Life Cycle Assessment di Perusahaan Penyedia Layanan dan Perakitan Sistem Turbocharger Suhada, Aisyah Ramadhanti; Murti, Restu Hikmah Ayu; Rachmanto, Tuhu Agung; Wibisana, Hendrata; Rosariawari, Firra
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Greenhouse gas (GHG) emissions from the industrial sector have a significant impact on global climate change. To assess the overall environmental impact, an analysis capable of mapping emissions from various operational activities is required. This study aims to analyze GHG emissions in a manufacturing company that focuses on turbocharger system assembly and services using the Life Cycle Assessment (LCA) method. The analysis was conducted with reference to the 2006 IPCC Guidelines and openLCA software, with the scope of research covering the transportation and energy sectors within the company. The inventory results show that the energy sector is the main contributor to emissions, with the largest impact category being climate change (GWP 100a). Next, a scenario analysis was conducted, namely real conditions, the use of solar panels, the use of diesel fuel, and a mixture. A comparison of the scenarios showed that the use of renewable energy in the form of solar panels could significantly reduce GHG emissions compared to the current conditions. This study confirms that the application of LCA can provide a quantitative picture of the potential environmental impact and serve as a scientific basis for formulating GHG emission management strategies in the industrial sector.
Co-Authors Addzikri, Ahmad Iqbal Ali, Munawar Almadhany, Muhammad Anggie Devitasari Azzahra, Maulayya Fatimah Cahyani, Nurilita Amalia Dwi Arman Prasetya Dyani, Olla Kemala Edy Mulyadi Euis Nurul Hidayah Eva Oktavia, Eva Faradina, Nasilla Aulia Hendrasarie, Novirina Hendrata Wibisana Hikmah Ayu M, Restu Jariyah Jawwad, Muhammad Abdus Salam Kasih, Bunga Cinta Krisnawati, Anik Kristianto P, Alfredo Kurnia Sari, Hanna Putri Maharani, Cahya Nova Putri Maroeto Maroeto Murti, Restu Hikmah Ayu Nisa', Syadzadhiya Qothrunada Zakiyayasin Nisa, Syadzadhiya Qothrunada Zakiyayasin Novembrianto, Rizka Novianto, Dwi Agus Nurrahma, Anisa Okik Hendriyanto Cahyonugroho Oktavianto, Achmad Afandi Pamungkas, Lestari Ayu Septian Praditya Sigit Ardisty Sitogasa Pratama, Bagas Chrisma Rachmanto, Tuhu Agung Ramadeandra, Shafa Azzahra Rhomadhoni, Muslikha Nourma Rizki, Azizah Mahirah Romadon, Syahrul Rositasari, Putri Redita Sagita Rochman Serenai, Fabian Pascalis Shalsabila, Marshanda Afifa Sholikin, Mohamad Siti Nuurlaily Rukmana, Siti Nuurlaily Suhada, Aisyah Ramadhanti Susanti, Laila Wahyu Tampubolon, Debora Rousyella Saulina Thohiroh, Mubayyinatuth Utami, Atikah Margi Yunia Dwie Nurchayanie