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Potensi Pemanfaatan Gas Karbon Dioksida (CO2) sebagai Density Agent untuk Larutan Pemisah Cangkang dan Kernel Sawit Muhammad Muhammad; Marwan Marwan; Muhammad Zaki; Edi Munawar
Jurnal Serambi Engineering Vol 7, No 1 (2022): Januari 2022
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v7i1.3883

In order to achieve the national target of decarbonization by 2030, Palm oil mills (POM) can contribute to reducing CO2 emissions generated from their production activities. The CO2 emitted from POM is currently discharged into the environment without further treatment. As a result, the amount of CO2 in the atmosphere will rise, increasing global warming. This study proposes an approach of utilizing CO2 as a density agent in separation fluid formulation. The formulated fluid is then used to separate palm shells and kernels in the claybath. The solubility of CO2 in water occurs physically and is dependent on temperature and partial CO2 gas in the air. Monoethanolamine (MEA) was used as an absorbent to ensure the full interaction of CO2 with water. The chemisorption method is selected to dissolution CO2 into aqueous MEA. The mass ratios of MEA were varied by 10, 20, 30, 40, 50 % w/w. The achieved appropriate densities of formulated fluid were 1,11, 1,14, dan 1,17 g/cm3 at mass ratios of MEA:H2O is 30, 40, dan 50% w/w, respectively. All achieved densities fall between palm shells and kernels densities. Furthermore, the formulated fluid can be used as separation fluid in claybath for separating palm shells and kernels. In addition to the proposed idea of utilizing CO2 and, at the same time, reducing CO2 emission from POM.

Klasifikasi Citra Songket Aceh Menggunakan Metode Probabilistic Neural Network Ismi Amalia; Indra Mawardi; Indrawati Indrawati; Muhammad Arhami; Muhammad Muhammad; Guntur Syahputra
Jurnal Serambi Engineering Vol 8, No 3 (2023): Juli 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i3.6132

Tujuan penelitian ini untuk mengklasifikasikan citra Songket Aceh. Data penelitian menggunakan sepuluh motif Songket Aceh dan data diperoleh dari tempat usaha tenun Songket Nyak Mu. Tahapan penelitian ini adalah akuisisi citra, pra-proses, ekstraksi fitur, klasifikasi dan evaluasi. Ekstraksi fitur tekstur citra Songket Aceh menggunakan metode Gray Level Co-occurrence Matrix (GLCM). Fitur-fitur yang digunakan pada penelitian ini adalah entropy, energy, sum of squares: variance, difference entropy dan autocorrelation. Metode Probabilistic Neural Network (PNN) diaplikasikan untuk klasifikasi citra Songket Aceh. Metode Leave-One-Out Cross Validation (LOOCV) digunakan untuk pembagian data latih dan data uji. Hasil klasifikasi citra Songket Aceh dengan metode PNN adalah sebesar 93%.

Modifikasi Serat Kenaf (Hibiscus cannabinus L.) Menggunakan Anhidrida Propionat Eka Marya Mistar; Muhammad Muhammad
Jurnal Serambi Engineering Vol 8, No 4 (2023): Oktober 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i4.6687

Kenaf is a local crop that has great potential as a polymer composite reinforcement. However, the main weakness in strengthening composites using kenaf fiber is its hydrophilic or water-absorbing properties. To improve composite properties, surface modification of kenaf fiber is needed to enhance the structure and chemical properties of kenaf fiber. This study aims to explore the potential of chemical modification of kenaf fiber for use in composites. Chemical modification treatment of kenaf fibers was intended to improve the hydrophobicity that the compatibility between the fiber and matrix bonds are enhanced. In this study, chemical modification of kenaf fiber was performed using propionic anhydride. The modification process was done through a three-variation of retention time; 100, 200, 300 minutes at 100 C. This research also compared the kenaf fiber properties with and without the modification process, including the analysis of the weight percent gain and surface morphological structure. The results showed that the optimal weight gain and morphological structure was at a retention time of 200 minutes.

Klasifikasi Citra Songket Aceh Menggunakan Metode Probabilistic Neural Network Ismi Amalia; Indra Mawardi; Indrawati Indrawati; Muhammad Arhami; Muhammad Muhammad; Guntur Syahputra
Jurnal Serambi Engineering Vol 8, No 3 (2023): Juli 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i3.6132

Tujuan penelitian ini untuk mengklasifikasikan citra Songket Aceh. Data penelitian menggunakan sepuluh motif Songket Aceh dan data diperoleh dari tempat usaha tenun Songket Nyak Mu. Tahapan penelitian ini adalah akuisisi citra, pra-proses, ekstraksi fitur, klasifikasi dan evaluasi. Ekstraksi fitur tekstur citra Songket Aceh menggunakan metode Gray Level Co-occurrence Matrix (GLCM). Fitur-fitur yang digunakan pada penelitian ini adalah entropy, energy, sum of squares: variance, difference entropy dan autocorrelation. Metode Probabilistic Neural Network (PNN) diaplikasikan untuk klasifikasi citra Songket Aceh. Metode Leave-One-Out Cross Validation (LOOCV) digunakan untuk pembagian data latih dan data uji. Hasil klasifikasi citra Songket Aceh dengan metode PNN adalah sebesar 93%.

PROCESSING RICE HUSK WASTE INTO CHARCOAL AS A PLANT GROWING MEDIUM AND ORGANIC FERTILIZER: PENGOLAHAN LIMBAH SEKAM PADI MENJADI ARANG SEKAM SEBAGAI MEDIA TANAM TUMBUHAN DAN PUPUK ORGANIK Ida Hasmita; Eka Marya Mistar; Nadia Putri Mauliza; Muhammad
WISDOM : Jurnal Pengabdian Kepada Masyarakat Wisdom Vol. 2 No. 1 (2025): JPKM WISDOM 3, 2025
Publisher : PT. ROCE WISDOM ACEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71275/wisdom.v2i1.54

Cot Puklat Village is a village located in Mukim Melayo where the rice farming profession is the main livelihood for the community. The extensive community rice fields in the village cause husk waste to accumulate after each harvest period, because the utilization of rice husk waste is still very minimal. This is the background for choosing the location of community service activities. This activity aims to socialize to the community about the utilization of rice husk waste into husk charcoal as organic fertilizer and plant media in Cot Puklat Village, Blang Bintang District, Aceh Besar Regency. The community service team (PkM) consists of five lecturers and 10 students majoring in Chemical Engineering, Universitas Serambi Mekkah. This training teaches the community to produce husk fertilizer from rice husk waste in order to provide benefits to the community in increasing the livelihood of the Cot Puklat village community. The community was very enthusiastic in participating in this community service activity. This activity is expected to be able to contribute and play an active role in creating a beautiful, beautiful, and healthy environment, especially in the Cot Puklat Village environment

Inovasi Teknologi Cultivator dalam Pemberdayaan Petani Palawija di Desa Mane Kareung, Kota Lhokseumawe Mawardi, Indra; Hanif, Hanif; Nurdin, Nurdin; Haiyum, Muhd; Muhammad, Muhammad; Nur, Faisal Muhammad; Aljufri, Aljufri
Jurnal Vokasi Vol 9, No 1 (2025): Maret
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/vokasi.v9i1.6574

Petani palawija di Desa Mane Kareung Kecamatan Blang Mangat Kota Lhokseumawe menghadapi kendala dalam proses pengolahan lahan. Proses pengolahan lahan berupa penggemburan tanah masih dilakukan secara konvensional, yaitu dengan menggunakan cangkul dan garu untuk menggemburkan tanah. Cara manual tersebut membutuhkan waktu dan tenaga yang lebih banyak. Abdulah sebagai mitra dalam Program Kemitraan Masyarakat (PKM) menghadapi kendala yang sama. Tujuan dari kegiatan PKM ini adalah untuk menerapkan inovasi teknologi mesin penggembur tanah (cultivator) pada proses pengolahan lahan sebelum dan saat tanaman palawija berproduksi. Penggunaan mesin cultivator diharapkan dapat menghasilkan tanah yang lebih subur dan gembur, sehingga tanaman dapat tumbuh dengan optimal. Penyelesaian permasalahan ini dilakukan melalui beberapa tahapan, mulai dari perancangan, pembuatan atau fabrikasi mesin cultivator, hingga implementasi mesin tersebut kepada mitra. Selain itu, mitra juga mendapatkan pelatihan terkait perawatan mesin. Mitra diharapkan mampu meningkatkan produktivitas hasil pertanian dengan mesin penggembur tanah tersebut. Dari hasil dari program ini, telah berhasil terbangun dan terimplementasi mesin teknologi tepat guna cultivator bagi mitra dalam meningkatkan produktivitas palawija. Mesin ini memiliki spesifikasi sebagai berikut: Dimensi: Panjang × Lebar × Tinggi (600 × 550 × 1100 mm), Penggerak: Motor bakar berdaya 0,3 HP, Putaran maksimum: 200 rpm, Kapasitas kerja: 0,2-0,5 hektar per jam. Selain itu, hasil implementasi menunjukkan bahwa mitra telah mampu mengoperasikan dan merawat mesin pembudidaya yang diberikan. Dengan mesin ini, proses penggemburan tanah untuk palawija menjadi lebih mudah, efisien, dan efektif.

Improved Physico-Mechanical Properties and Microstructure of Modified Kenaf Fiber Reinforced Composites Eka Marya Mistar; Muhammad Muhammad
ALCHEMY Jurnal Penelitian Kimia Vol 21, No 1 (2025): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.21.1.92620.64-71

This study examined the properties of chemically modified kenaf fiber using propionic anhydride as reinforcement in vinyl ester composites. The composites reinforced by unmodified and modified kenaf fibers were fabricated using 10, 20, 30, 40, and 50% (w/w) via a hand lay-up technique. This study’s characterization included water absorption, thickness swelling, tensile and flexural strengths, and morphological analyses. The optimum physical, mechanical, and morphological properties were observed from the composite with 40% modified kenaf fiber. The optimized composite showed a considerable enhancement in the water absorption, tensile strength, and flexural strength of 1.82%, 54.90 MPa, and 55.85 MPa, respectively. These findings were supported by the fracture morphology after the mechanical test, exhibiting an enhanced interfacial modified kenaf fiber-matrix bonding. The improved characteristics of the composite were ascribed to the impact of the modification process within the fiber-matrix structures. Modified kenaf fiber via propionylation can be applied as a reinforcement material in the vinyl ester matrix.

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