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All Journal Jurnal Teknologi Industri Pertanian CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) JURNAL KIMIA SAINS DAN APLIKASI Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Teknik Kimia USU Jurnal Bahan Alam Terbarukan Jurnal Teknik Mesin Jurnal RISET Geologi dan Pertambangan Jurnal Litbang Industri Jurnal Hasil Penelitian Industri ALCHEMY Jurnal Penelitian Kimia KACANEGARA Jurnal Pengabdian pada Masyarakat Jurnal Serambi Engineering Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Vokasi Jurnal ABDINUS : Jurnal Pengabdian Nusantara ASEAN Journal of Chemical Engineering East Asian Journal of Multidisciplinary Research (EAJMR) Jurnal Teknik Kimia USU Prosiding Seminar Nasional Universitas Serambi Mekkah Makara Journal of Science Makara Journal of Technology Aceh International Journal of Science and Technology PESARE: Science and Engineering Service Journal Journal Serambi Engineering (JSE) JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Mitra Pengabdian Farmasi
Mirna Rahmah Lubis
Chemical Engineering Department, College Of Engineering, Universitas Syiah Kuala, Banda Aceh 23111
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The Treatment of Hospital Wasterwater Electrocoagulation Using Iron Electrodes: Analysis by Response Surface Methodology M. Yusuf, Darmadi; Lubis,, Mirna Rahmah; Adisalamun, Adisalamun
Jurnal Rekayasa Kimia & Lingkungan Vol 14, No 2 (2019): Jurnal Rekayasa Kimia & Lingkungan (December, 2019)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v14i2.13790

Abstract

Hospital wastewater basically contains organic materials and inorganic materials. Levels of these materials can be determined by testing of Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Dissolved Solid (TDS), and Total Suspended Solid (TSS). The hospital wastewater treatment proposed in this research is the electrocoagulation treatment using electrodes Fe-Fe and uses the response surface method for optimizing the response variable. Referring to this resea rch, the result shows that the relationship between the process variables and the TSS is significantly influential. As the contact time (15, 30, and 45 minutes) is longer and the voltage (6, 9, and 12 volts) is higher, the percentage reductions of TSS increase. However, the electrolyte solution (01 M) has little influence/significance to a response variable of TSS. The highest percentage of TSS reduction is at the contact time 30 minutes and 12 volts, which declined at contact time 45 minutes. The model recommended is a quadratic form with a low error less than 1.6%. In such a way, the optimum condition is at contact time 36 minutes, voltage 12 volts, and the electrolyte (NaCl) concentration 0.1 M. The reduction percentage is TSS 72.45%.
Leaching of Oil from Tuna Fish Liver by Using Solvent of Methyl-Ethyl Ketone Lubis, Mirna Rahmah; M., Nova
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 4 (2013): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v9i4.1233

Abstract

Research of oil leaching from Tuna Fish Liver has been carried out by extracting of tuna fish liver in soxhlet by using methyl-ethyl ketone as solvent. Liver of fresh tuna fish is blended, put into soxhlet, and extracted at temperatures of 60oC, 65oC, 70oC, 75oC, and 80oC. After obtaining the oil, separation between solvent and oil is carried out by distillation. Oil obtained is analyzed by testing the yield, acid number, Iodine value, viscosity, and its impurities content. Yield obtained is influenced by temperature and time of leaching. Both variables indicates that the higher the variables, the more fish liver oil obtained. Maximum yield obtained is 25.552% at operating condition of leaching temperature 80oC, and leaching duration of 5 hours.
Mencegah Pembentukan Kalsium Sulfat pada Desalinasi Air Laut Lubis, Mirna Rahmah; Zhu, Li; Granda, Cesar B.
Jurnal Rekayasa Kimia & Lingkungan Vol 6, No 1 (2007): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Resin penukar-anion, Relite MG 1/P, dapat digunakan untuk memisahkan sulfat dalam air laut guna mencegah pembentukan kerak kalsium sulfat pada heat exchanger. Resin tersebut menunjukkan selektivitas sulfat yang tinggi dalam air laut sintetis. Resin yang telah dipakai dapat diregenerasi menggunakan air asin yang dipekatkan dengan asam hingga mencapai pH 4. Untuk waktu pemakaian dan regenerasi yang sama, faktor konsentrasi desalinasi (misalnya 2 hingga 4) menaikkan konsentrasi klorida dalam air asin yang diblowdown. Dengan faktor konsentrasi yang tetap, kenaikan laju alir (pengurangan waktu pemakaian dan regenerasi) memperendah efisiensi regenerasi dan menaikkan pemisahan sulfat. Akibat kelarutan kalsium sulfat yang bersifat terbalik tersebut, temperatur air asin yang tinggi memerlukan pemisahan sulfat yang lebih banyak, yang dapat dicapai dengan mengurangi laju alir air laut. Pengurangan laju alir tersebut membutuhkan peralatan yang lebih besar dan resin yang lebih banyak, sehingga biaya modal bertambah. Untuk pabrik desalinasi dengan kapasitas produksi 1 juta gallon per hari dan faktor konsentrasi sebesar 2, biaya pemisahan sulfat meliputi biaya resin dan biaya peralatan. Biaya tersebut bervariasi dari $0.246 hingga $0.356/kgalon (per ribu galon air yang diproduksi) karena temperatur maksimum air asin berubah dari 140C menjadi 180C.Keywords: desalinasi air laut, ion exchange, kalsium sulfat, kerak; mechanical vapor compression (MVC), pemisahan sulfat, resin penukar-anion basa lemah
Hidrolisis Pati Sukun dengan Katalisator H2SO4 untuk Pembuatan Perekat Lubis, Mirna Rahmah
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 2 (2012): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Breadfruit starch is a unique resource which benefits for raw material of adhesive making. This study investigates hydrolysis method of breadfruit starch into dextrin with Sulphate Acid (H2SO4) catalysator. Dextrin hydrolysis is carry out in order to produce high dextrin percentage by subtracting the total glucose with free glucose. This study evaluates composition change because of breadfruit starch in various time and temperature. Optimum dextrin percentage is obtained at hydrolysis temperature of 100C, hydrolysis time 10 minutes, and 0.5 N H2SO4 concentration, with dextrin percentage of 77.12%. Furthermore, dextrin obtained is added by casein, cold water, triethanolamine, and water in order to form adhesive. The reserch result showed that the shear strength of the dextrin glue is 14 kg/cm2 which is larger than that of glue of Fox brands sold in the market that is only 12.48 kg/cm2. Because there is previous study regarding starch hydrolysis from breadfruit by using chloride acid catalysator, then data in this research show the influence of the sulphate acid usage as catalysator of adhesive. Based on the comparison, it seems that for breadfruit starch hydrolyzed at 100oC for 10 minutes, dextrin produced is less than that obtained by using chloride acid catalysator. The less dextrin percentage from breadfruit starch is caused by not all hydro sulphate ions are dissociated while mixing with starch. The mass balance is necessary to be completed including analysis of the breadfruit starch composition after hydrolysis to determine whether the starch has been degraded or not.Keywords: adhesive, dextrin, hydrolysis, shear strength
Economic Analysis in Series-Distillation Desalination Lubis, Mirna Rahmah
Jurnal Rekayasa Kimia & Lingkungan Vol 7, No 3 (2010): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

The ability to produce potable water economically is the primary purpose of seawater desalination research. Reverse osmosis (RO) and multi-stage flash (MSF) cost more than potable water produced from fresh water resources. Therefore, this research investigates a high-efficiency mechanical vapor-compression distillation system that employs an improved water flow arrangement. The incoming salt concentration was 0.15% salt for brackish water and 3.5% salt for seawater, whereas the outgoing salt concentration was 1.5% and 7%, respectively. Distillation was performed at 439 K and 722 kPa for both brackish water feed and seawater feed. Water costs of the various conditions were calculated for brackish water and seawater feeds using optimum conditions considered as 25 and 20 stages, respectively. For brackish water at a temperature difference of 0.96 K, the energy requirement is 2.0 kWh/m3. At this condition, the estimated water cost is $0.39/m3 achieved with 10,000,000 gal/day distillate, 30-year bond, 5% interest rate, and $0.05/kWh electricity. For seawater at a temperature difference of 0.44 K, the energy requirement is 3.97 kWh/m3 and the estimated water cost is $0.61/m3. Greater efficiency of the vapor compression system is achieved by connecting multiple evaporators in series, rather than the traditional parallel arrangement. The efficiency results from the gradual increase of salinity in each stage of the series arrangement in comparison to parallel. Calculations using various temperature differences between boiling brine and condensing steam show the series arrangement has the greatest improvement at lower temperature differences.Keywords: desalination, dropwise condensation, mechanical-vapor compression
Sosialisasi Emergency Response Plan di lingkungan Program Studi Teknik Pertambangan Universitas Syiah Kuala Lubis, Mirna Rahmah; Putra, Teuku Andika Rama; Karmel, Moehammad Ediyan Raza; Maimun, Teuku
KACANEGARA Jurnal Pengabdian pada Masyarakat Vol 7, No 3 (2024): Agustus
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/kacanegara.v7i3.2105

Abstract

Setiap individu di lingkungan Program Studi Teknik Pertambangan Universitas Syiah Kuala (PSTP USK) harus menyadari kemungkinan keadaan darurat untuk memastikan keselamatan dan kesejahteraannya. Lingkungan PSTP USK dapat berbahaya, dengan risiko seperti runtuhan gedung, ledakan, kebakaran, pelepasan gas beracun, dan kerusakan peralatan. Pengetahuan tentang potensi keadaan darurat memungkinkan setiap individu untuk mengenali tanda peringatan, mengambil langkah-langkah pencegahan, dan merespons secara efektif jika terjadi keadaan darurat. Oleh karena itu, tim pengabdi melakukan sosialisasi emergency response plan (ERP) dengan tujuan untuk memastikan kesiapan dan keselamatan bagi staf, dosen, dan mahasiswa dalam keadaan darurat di lingkup PSTP USK. Metode yang digunakan untuk mensosialisasikan ERP di PSTP USK ini adalah mengadakan sesi pelatihan formal, latihan, sesi informasi, mendistribusikan manual, memberikan akses ke sumber daya online seperti webinar, dan mengadakan sesi umpan balik. Hasil sosialisasi ERP ini menunjukkan bahwa peserta telah memiliki kesadaran yang lebih tinggi terhadap potensi keadaan darurat yang mungkin terjadi di PSTP USK, memungkinkan mereka untuk mengenali tanda-tanda peringatan dan mengambil langkah pencegahan yang sesuai. Proses sosialisasi telah meningkatkan kesiapsiagaan prodi untuk merespons secara efektif berbagai keadaan darurat, memastikan keselamatan dan kesejahteraan setiap individu, dan meminimalkan risiko potensial.
Sosialisasi Pembuatan Pestisida Organik dari Sekam Padi dengan Proses Pirolisis di Aceh Besar Fathanah, Umi; Syamsuddin, Yanna; Darwanis, Darwanis; Suparno, Suparno; Aprilia, Sri; Mulyati, Sri; Lubis, Mirna Rahmah; Amin, Amri
Jurnal Vokasi Vol 8, No 2 (2024): Juli
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/vokasi.v8i2.5529

Abstract

Padi adalah komoditas utama di negara agraris seperti Indonesia, yang sebagian besar penduduknya mengandalkan beras sebagai makanan pokok. Pasca panen, produksi beras menghasilkan limbah sekam padi, yang biasanya dibakar atau dibuang ke sungai, menyebabkan pencemaran dan merusak habitat sungai. Selain itu, petani sering menghadapi masalah hama yang mengakibatkan kerugian besar. Program pengabdian masyarakat berbasis produk (PKMBP) masyarakat bagi kelompok tani di Desa Cot Mesjid, Aceh Besar bertujuan meningkatkan produksi padi dengan mengolah sekam padi menjadi pestisida organik melalui teknologi pirolisis. Kegiatan ini juga mencakup penyuluhan, pendidikan, dan pelatihan bagi petani untuk meningkatkan keterampilan mitra. Kegiatan pengabdian ini tidak hanya memberikan manfaat komersial tetapi juga mengurangi penggunaan pestisida kimia yang berbahaya bagi masyarakat dan ekosistem lainnya. Mitra telah beralih pada penggunaan pestisida organik hasil pirolisis sekam padi yang telah diproduksi. Dampak akhir dari pelaksanaan program ini adalah tumbuhnya jiwa kewirausahaan pada mitra serta peningkatan pendapatan yang pada akhirnya dapat meningkatkan taraf hidup mitra sasaran.
Pemberdayaan Masyarakat Gampong Tanjung Selamat melalui Pemanfaatan Jerami Padi menjadi Pupuk Kompos Organik di Aceh Besar Fathanah, Umi; Aprilia, Sri; Rinaldi, Wahyu; Lubis, Mirna Rahmah; Syamsuddin, Yanna; Zuhra, Zuhra; Mulyati, Sri; Yunardi, Yunardi; Suparno, Suparno; Amin, Amri
Jurnal Vokasi Vol 9, No 3 (2025): November
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/vokasi.v9i3.8141

Abstract

Limbah jerami padi merupakan hasil samping pertanian yang melimpah di pedesaan dan selama ini belum dimanfaatkan secara optimal. Sebagian besar petani di Desa Tanjung Selamat, Kecamatan Darussalam, Kabupaten Aceh Besar, masih membakar jerami setelah panen, sehingga berpotensi mencemari lingkungan dan menghilangkan unsur hara penting bagi tanah. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pengetahuan dan keterampilan masyarakat Gampong Tanjung Selamat dalam memanfaatkan jerami padi menjadi pupuk kompos organik sebagai upaya mendukung pertanian berkelanjutan. Metode pelaksanaan meliputi sosialisasi, pelatihan, dan demonstrasi pembuatan kompos dengan melibatkan 30 mahasiswa KKN dan masyarakat desa. Proses pembuatan kompos dilakukan menggunakan bahan jerami padi, kotoran sapi, sekam, dan dedak dengan penambahan bioaktivator Effective Microorganisms (EM-4) dan molase, kemudian difermentasi selama 21–28 hari. Hasil kegiatan menunjukkan bahwa masyarakat mampu memproduksi pupuk kompos secara mandiri dengan ciri fisik kompos matang, yaitu berwarna gelap, berbau tanah. Pelaksanaan kegiatan ini juga meningkatkan kesadaran masyarakat terhadap pentingnya pengelolaan limbah pertanian yang ramah lingkungan, mengurangi ketergantungan pada pupuk kimia, serta membuka peluang usaha kecil berbasis produksi kompos desa. Kegiatan ini terbukti efektif sebagai model pemberdayaan masyarakat berbasis teknologi tepat guna dan mendukung pencapaian tujuan pembangunan berkelanjutan (SDGs) di bidang pertanian.
Optimization of Bioethanol Production Using an Enzymatic Hydrolysis Process with Green Algae (Chaetomorpha) as the Raw Material Maimun, Teuku; Lubis, Mirna Rahmah; Zein, Muhammad Aldi; Ali, Wahed Febbry Andriansyah
Makara Journal of Technology Vol. 28, No. 2
Publisher : UI Scholars Hub

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Abstract

Bioethanol is an alternative fuel derived from biological feedstock used to decrease the reliance on fossil fuels because of increasing energy consumption associated with population growth and increased use of oil fuels. Bioethanol production has been widely conducted using several types of algae, but the optimal conditions for the hydrolysis and fermentation processes are not explained in more detail. Therefore, this study focuses on determining the optimal conditions for hydrolysis and fermentation to maximize the bioethanol yield. This study uses optimization based on the hydrolysis time, temperature, and pH to increase the reducing sugar content using high-performance liquid chromatography in the enzymatic hydrolysis process. The process consists of liquefaction and saccharification steps, where 4% α-amylase enzyme and 2%, 3%, and 4% glucoamylase are used. Results showed that the optimal conditions for the hydrolysis time were 180 min at temperatures of 70 °C to 80 °C. The enzymatic hydrolysis process is conducted under optimal conditions, followed by the fermentation process. Finally, the distillation process was performed with a maximum bioethanol yield of 25.0%.
EVATOR BIO-FOAM: INOVASI KEMASAN BIODEGRADABLE BERBASIS WIRAUSAHA MAHASISWA Lubis, Mirna Rahmah; Muchlis, Muchlis; Zhafran, Muhammad; Rahman, Faris Izzatur
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 8, No 3 (2025): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v8i3.61238

Abstract

The development of environmentally friendly products is an innovative solution to minimizing the harmful effects of waste on the environment. This innovation development program aims to formulate innovative strategies for developing Evator Bio-Foam products, made from rice husks, specifically for students through an entrepreneurship-based approach. Evator Bio-Foam, a rice husk-based product, is specifically targeted at university students through an entrepreneurship-based approach. Evator Bio-Foam is a biodegradable packaging material made from a mixture of rice husks, soybean flour, and yeast, which is fermented and molded into a functional alternative to Styrofoam. The product is lightweight, water-resistant, food-safe, and decomposes naturally within a relatively short time. The strategy employed in this program integrates learning, creativity, and entrepreneurship to increase students’ awareness of environmental sustainability while providing them with essential business skills. The methods used include training, workshops, and business simulations focusing on production, marketing, and product management. The results show that this approach enhances students’ understanding of environmentally friendly innovation and encourages active involvement in developing sustainable businesses. This educational model not only supports environmental conservation efforts but also creates new opportunities in entrepreneurship that are relevant to market needs. Thus, it offers a viable alternative for cultivating a generation that is environmentally conscious and oriented toward business innovation.Pengembangan produk ramah lingkungan menjadi solusi inovatif untuk mengurangi dampak negatif limbah terhadap lingkungan. Program pengembangan inovasi ini bertujuan untuk merumuskan strategi pengembangan produk Evator Bio-Foam berbahan dasar sekam padi, khususnya untuk mahasiswa, melalui pendekatan berbasis wirausaha. Evator Bio-Foam merupakan kemasan biodegradable yang dibuat dari campuran sekam padi, tepung kedelai, dan ragi, yang difermentasi dan dicetak menjadi produk pengganti styrofoam. Produk ini bersifat ringan, tahan air, aman untuk makanan, serta mudah terurai secara alami dalam waktu relatif singkat. Strategi yang digunakan dalam program ini mengintegrasikan pembelajaran, kreativitas, dan kewirausahaan guna meningkatkan kesadaran lingkungan mahasiswa sekaligus membekali mereka dengan keterampilan bisnis. Metode yang digunakan meliputi pelatihan, workshop, dan simulasi bisnis yang berfokus pada proses produksi, pemasaran, dan pengelolaan produk. Hasil program menunjukkan bahwa pendekatan ini mampu meningkatkan pemahaman mahasiswa tentang inovasi ramah lingkungan serta mendorong keterlibatan aktif dalam pengembangan usaha berkelanjutan. Model edukasi ini tidak hanya mendukung pelestarian lingkungan, tetapi juga menciptakan peluang baru di bidang kewirausahaan yang relevan dengan kebutuhan pasar. Dengan demikian, model edukasi ini dapat menjadi alternatif solusi untuk membangun generasi muda yang sadar lingkungan dan berorientasi pada inovasi bisnis.
Co-Authors - Darmadi Abrar Muslim Adisalamun Adisalamun Ali, Wahed Febbry Andriansyah Alisastromijoyo Alisastromijoyo Alisastromijoyo, Alisastromijoyo Ambarita, Aulia Chintia Amelia Amri Amin Anggraini, Jessica Ardhila Shinta Aula Chairunnisak Aula Khairunnisa Bastian Arifin Cesar B. Granda Cesar B. Granda Cut Meurah Rosnelly Cut Meurah Rosnelly Darmadi M. Yusuf Darwanis Darwanis Devi Rahmanda Dian Nugraha Fachrul Razi Harahap, Baran Enda Hendra Cipta Hendra Harisman Hendra Hasrisman Hery Widijanto Hesti Meilina Hesti Meilina Hizir Hizir Husni Husin Husni Husin Ibnu Rusydy Izarul Machdar Izarul Machdar Izarul Machdar, Izarul Jessica Anggraini Jon Kardi Kardi, Jon Karmel, Moehammad Ediyan Raza Li Zhu Li Zhu Lia Mairiza M Fahmi M, Iqhramullah M, Irfan M. Yusuf, Darmadi Mark T Holtzaple Masra, Rifdullah Bikri Medyan Riza Meuthia Busthan MUCHLIS Muchlis Muchlis Muchlis Muchlis Muhammad Jehan Muhammad Zaki Mukhriza Mukhriza Mukramah Mukramah Mukramah Yusuf Mukramah Yusuf Mukramah Yusuf Mulkal Mulkal Mulkal, Mulkal Muntazar, Muntazar Mustabsyirah Mustabsyirah Nafisah Al Huda Nasrul Arahman Nasrul Arahman Nasrullah RCL Naufal Effendi Nova M. Nova M. Nurul Aflah Nurul Aflah Nurul Aflah Nurul Kamal Paramita, Esti Pocut Nurul Alam Pramana, Agus Hari Putra, Teuku Andika Rama Rahman, Faris Izzatur Rifdullah Bikri Masra Rina Hazliani Ryan Moulana Sofyana Sofyana Sofyana Sofyana Sri Aprilia Sri Mulyati Sri Mulyati SRI RAHAYU Suparno Suparno Suraiya Kamaruzzaman Suraiya Kamaruzzaman Syaubari Syawaliah Muchtar Syawaliah Muchtar Syawaliah, Syawaliah Teuku Maimun Teuku Maimun Teuku Maimun Umi Fathanah Umi Fathanah Wahyu Priyanto Wahyu Rinaldi Wahyu Rinaldi Wahyu Rinaldi Yanna Syamsuddin Yoessi Oktarini yunardi, yunardi Yusuf, Mukramah Zein, Muhammad Aldi Zhafran, Muhammad Zuhra Zuhra Zuhra