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All Journal Jurnal Teknologi Industri Pertanian CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) 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 Jurnal Serambi Engineering Abdimas Umtas : 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 Aceh International Journal of Science and Technology PESARE: Science and Engineering Service Journal Serambi Engineering 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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Penyelidikan Struktur Bawah Permukaan di Kawasan Lam Cot, Kecamatan Darul Imarah, Aceh Besar Dengan Menggunakan Metode Geolistrik 1D Nurul Aflah; Hendra Harisman; Muchlis Muchlis; Mirna Rahmah Lubis; Agus Hari Pramana
PESARE: Jurnal Pengabdian Sains dan Rekayasa Vol 2, No 2 (2024): Juni 2024
Publisher : Universitas Syiah Kuala

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Abstract

Ketersediaan air tanah yang memadai menjadi krusial seiring dengan pertumbuhan populasi manusia. Artikel ini mengungkapkan studi tentang keberadaan sumber air tanah alternatif di Kawasan Lam Cot, Aceh Besar. Metode geolistrik resistivitas digunakan untuk mengidentifikasi kedalaman lapisan akuifer dan potensi sumber air tanah dalam. Pengukuran dilakukan pada satu titik pengukuran dengan penggunaan resistivitimeter SuperSting R8/IP. Hasil pengukuran resistivitas semu menunjukkan variasi nilai antara 0,5 hingga 193,2 Ωm dengan kedalaman berkisar 0 hingga 140 meter. Identifikasi keadaan litologi di bawah permukaan menunjukkan adanya tanah lempung, lanau, batuan kerikil, dan batu pasir dengan nilai resistivitas yang berbeda pada kedalaman tertentu. Meskipun akuifer tidak ditemukan dalam jangkauan pengukuran, penelitian ini memberikan pemahaman yang mendalam tentang kondisi hidrogeologi kawasan tersebut. Diperlukan studi lanjutan dengan pengukuran yang lebih luas untuk mendapatkan informasi yang lebih komprehensif tentang sumber air tanah di Kawasan Lam Cot.
Sosialisasi Pembuatan Pestisida Organik dari Sekam Padi dengan Proses Pirolisis di Aceh Besar Umi Fathanah; Yanna Syamsuddin; Darwanis Darwanis; Suparno Suparno; Sri Aprilia; Sri Mulyati; Mirna Rahmah Lubis; Amri Amin
Jurnal Vokasi Vol 8, No 2 (2024): Jurnal Vokasi (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.
Peningkatan kinerja membran hidrofobik polyethersulfone (PES) menggunakan silika berbasis sekam padi sebagai aditif Umi Fathanah; Mirna Rahmah Lubis; Cut Meurah Rosnelly; Syawaliah Muchtar; Mukramah Yusuf
Jurnal Litbang Industri Vol 14, No 1 (2024)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v14i1.8299.85-92

Abstract

Penelitian ini menyelidiki pengaruh penambahan aditif silika dari seka padi untuk meningkatkan kinerja dan kketahanan terhadap fouling. Pembuatan membran dilakukan dengan metode non solvent induced phase separation (NIPS) secara blending polimer. Membran yang dihasilkan dikarakterisasi dengan mengevaluasi gugus fungsi mengunakan FTIR, struktur morfologi menggunakan SEM, sudut kontak air menggunakan WCA meter serta uji porositas membran dengan metode gravimetri. Temuan penelitian menunjukkan bahwa aditif silika memiliki pengaruh positif dalam membran PES yang telah disiapkan. Terjadinya perubahan struktur morfologi membran yang dibuktikan dari hasil SEM pada penampang melintang membran. Peningkatan konsentrasi silika yang ditambahkan, mengakibatkan peningkatan  porositas serta sifat hidrofilisitas membran modifikasi. Hasil penelitian menunjukkan fluks air optimum diperoleh pada penambahan 3% silika yaitu sebesar 62,3 L/m2.jam dengan rejeksi asam humus sebesar 64,4% dengan sifat anti fouling membran meningkat sebesar 2,7 kali   dibandingkan dengan membrane PES tanpa modifikasi.
GEOCHEMICAL SURVEY FOR DETERMINING GOLD CONTENT USING X-RAY DIFFRACTION METHOD IN GUNONG UJEUN OF KRUENG SABEE DISTRICT ACEH JAYA Muntazar, Muntazar; Aflah, Nurul; Lubis, Mirna Rahmah; Muchlis, Muchlis
CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Vol 12 No 1 (2024): Cakra Kimia (Indonesia E-Journal of Applied Chemistry)
Publisher : Graduate Program of Applied Chemistry, Udayana University, Bali-INDONESIA

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Abstract

ABSTRAK: Survei geokimia dilakukan untuk mendeteksi kandungan dari berbagai jenis mineral yang ada. Identifikasi emas pada batuan dari lokasi penambangan emas rakyat di Gunong Ujeun, Krueng Sabee, Aceh Jaya telah dilakukan menggunakan metode X-Ray Diffraction (XRD). Pada penelitian ini, proses identifikasi mineral dilakukan pada beberapa lokasi di Krueng Sabee. Sampel batuan yang terkumpul diproses untuk mendapatkan bubuk berbutir halus yang sesuai untuk dianalisis. Selanjutnya sampel tersebut dianalisis kadar emasnya menggunakan alat X-Ray Diffractometer. Data pengujian menggunakan XRD kemudian dianalisis menggunakan aplikasi Match!3. Mineral utama yang diidentifikasi dalam sampel batuan termasuk kuarsa, illit, magnetit, zircon, albit, dan hastingsit. Mineral-mineral ini umumnya terkait dengan mineralisasi emas. Hasil analisis menunjukkan bahwa kandungan emas tertinggi terdapat pada lokasi BT-02 dengan kadar 1,746% dan lokasi terendah yaitu lokasi BT-04 dengan kadar 0,029%. Pengujian dilakukan menggunakan Cu-Ka dengan panjang gelombang 1,542 Å. Hasil akhir tersebut diinterpretasikan dalam bentuk peta kadar emas. ABSTRACT: Geochemical surveys have been conducted to detect the content of various types of minerals. The identification of gold in rock from the traditional gold mining in Gunong Ujeun, Krueng Sabee, Aceh Jaya using X-Ray Diffraction (XRD) method has been carried out. In this study, the mineral identification process was conducted at several locations in Krueng Sabee. The collected rock samples were processed to obtain fine-grained powder suitable for analysis. Subsequently, the gold content in the samples was analyzed using X-Ray Diffractometer. The XRD data were then analyzed by Match!3 software. The main minerals identified in the rock samples included quartz, illite, magnetite, zircon, albite, and hastingsite. These minerals are commonly associated with gold mineralization. The results indicate that the highest gold content was found in sample BT-02 at 1.746%, while the lowest was in sample BT-04 at 0.029%. The test was conducted using Cu-Ka with a wavelength of 1.542 Å. The final results was interpreted as a gold grade map.
The Improvement of Hydrophilic Property of Polyethersulfone Membrane with Chitosan as Additive Umi Fathanah; Izarul Machdar; Medyan Riza; Nasrul Arahman; Mirna Rahmah Lubis; Mukramah Yusuf
Jurnal Rekayasa Kimia & Lingkungan Vol 15, No 1 (2020): Jurnal Rekayasa Kimia & Lingkungan (June, 2020)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v15i1.15916

Abstract

Membrane technology has been implemented broadly for clean water treatment. To produce a better membrane, modification is carried out by adding chitosan into a polymer solution. Materials used in this research are polyethersulfone (PES) 18%, the n-methyl pyrrolidone solvent modified with a chitosan solution (at 0.2 1 wt%) as an additive, and deionized water as a non-solvent. The membrane synthesis is carried out with the non-solvent induced phase separation method of blending the polymer. Membrane characterization includes functional group analysis, morphological structure, and water contact angle. Membrane performance is monitored at the filtration process, resulting in the permeability coefficient, and for the rejection of a contaminant (humic acid) with dead-end filtration. Research results show that the modified membrane characterization has an asymmetric morphological structure with a thinner top layer, and the membrane sublayer has a finger-like macrovoid structure with a larger size as compared to the original PES membrane (without the chitosan solution addition). The chitosan additive into the PES membrane improves the membranes hydrophilic property. The highest value of the permeability coefficient is achieved with a 1% chitosan addition, which provides a permeability coefficient value of 10.524 L/m2.h.bar and a rejection coefficient of 70.3%.
The Treatment of Hospital Wasterwater Electrocoagulation Using Iron Electrodes: Analysis by Response Surface Methodology Darmadi M. Yusuf; Mirna Rahmah Lubis,; 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 Mirna Rahmah Lubis; Nova M.
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 Mirna Rahmah Lubis; Li Zhu; Cesar B. Granda
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 Mirna Rahmah Lubis
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 Mirna Rahmah Lubis
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
Co-Authors Abrar Muslim Adisalamun Adisalamun Agus Hari Pramana Alisastromijoyo Alisastromijoyo Alisastromijoyo, Alisastromijoyo Ambarita, Aulia Chintia Amelia Amri Amin Amri Amin Anggraini, Jessica Ardhila Shinta Aula Chairunnisak Aula Khairunnisa Bastian Arifin Cesar B. Granda Cut Meurah Rosnelly Cut Meurah Rosnelly Dana Siswar., Evi Iskandar, Darwanis, Darmadi Darmadi Darmadi Darmadi Darmadi M. Yusuf Darwanis Darwanis Devi Rahmanda Dian Nugraha Fachrul Razi Harahap, Baran Enda Harisman*, Hendra Hendra Cipta Hendra Harisman Hendra Hasrisman Hery Widijanto Hesti Meilina Hesti Meilina Hizir Hizir Husni Husin Husni Husin Ibnu Rusydy Izarul Machdar Izarul Machdar Jessica Anggraini Jon Kardi Kardi, Jon Li Zhu Lia Mairiza M Fahmi M, Iqhramullah M, Irfan Mark T Holtzaple Masra, Rifdullah Bikri Medyan Riza Meuthia Busthan MUCHLIS Muchlis Muchlis Muchlis Muchlis Muhammad Jehan Mukhriza Mukhriza Mukramah Mukramah Mukramah Yusuf Mukramah Yusuf Mukramah Yusuf Mulkal Mulkal Mulkal, Mulkal Mulyati, Sri Muntazar, Muntazar Mustabsyirah Mustabsyirah Nafisah Al Huda Nasrul Arahman Nasrul Arahman Naufal Effendi Nova M. Nurul Aflah Nurul Aflah Nurul Aflah Nurul Kamal Paramita, Esti Pocut Nurul Alam Rifdullah Bikri Masra Rina Hazliani Ryan Moulana Sofyana Sofyana Sri Aprilia Sri Mulyati SRI RAHAYU Suparno Suparno Suparno Suparno Suraiya Kamaruzzaman Suraiya Kamaruzzaman Syaubari Syawaliah Muchtar Syawaliah Muchtar Syawaliah, Syawaliah Teuku Maimun Teuku Maimun Teuku Maimun Umi Fathanah Umi Fathanah Wahyu Rinaldi Wahyu Rinaldi Yanna Syamsuddin Yanna Syamsuddin Yoessi Oktarini yunardi, yunardi Zuhra Zuhra Zuhra