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Synthesis of Triacetin Catalyzed by Activated Natural Zeolite Under Microwave Irradiation Hamzah, Dzikri; Rinaldi, Taufik; Marwan, Marwan; Rinaldi, Wahyu
Jurnal Bahan Alam Terbarukan Vol 8, No 1 (2019): June 2019 [Nationally Accredited - Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v8i1.14028

Esterification of glycerol with acetic acid under microwave irradiation in the presence of activated natural zeolite was investigated. Natural zeolite was collected from Ujung Pancu (Aceh Besar) and chemically activated with hydrochloric acid. The reaction was carried out in a stirred glass flask reactor placed inside microwave oven. Experimental variables include microwave transmission time, molar ratio of glycerol to acetic acid, and catalyst loading. XRD profile of activated zeolite showed an increase of Si/Al ratio to 6.042 and the crystallinity decreased slightly by 12.23%, mainly due to dealumination during chemical treatment. Qualitative analysis by FTIR shows that the reaction product obtained by microwave heating contains ester group (triacetin) at wavelength 1706.669 cm-1, while the quantitative analysis by acidi-alkalimetry titration indicates the highest glycerol conversion of 93.033% at the reaction condition of the molar ratio of 1:9, catalyst loading of 3%, and microwave transmission of 10 minutes. The present work suggests that microwave can be utilized as efficient heating technique in esterification of glycerol to triacetin.

OPTIMASI NIRA SAWIT DALAM PEMBUATAN MINUMAN SINBIOTIK DENGAN TAMBAHAN INULIN DAN KULTUR BAKTERI LACTOBACILLUS CASEI Rinaldi, Wahyu; Raja, Pada Mulia; Syukri, Muhammad; Maharani, Rhyna; Rangkuti, Ika Ucha Pradifta
Jurnal Agro Fabrica Vol. 4 No. 1 (2022): Juni 2022
Publisher : Institut Teknologi Sawit Indonesia (ITSI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47199/jaf.v4i1.178

Oil palm trunks can produce quite a lot of sap water, which is approximately 10 per day for 1 month for 1 oil palm tree that is uprooted, currently, there is not much optimal processing of palm oil with an economical selling price, for this reason, it is necessary to develop functional foods. This study aims to determine whether palm sap can be used in the manufacture of symbiotic beverage products with optimum chemical, microbiological and organoleptic qualities. The study was arranged using a non-factorial Completely Randomized Design (CRD) method with 3 treatments of incubation time, namely 12 hours, 24 hours, and 36 hours with each treatment using 6 replications so that 18 experiments were carried out. The best treatment by SNI 2981:2009 was obtained at an incubation time of 24 hours, namely with a pH of 5.2, water content is 82.50%, total dissolved solids is 17.33%, the lactic acid content is 0.81%, a total lactic acid bacteria of 2.8 x 108 and produces a minimum dense texture with sufficient acidity. The organoleptic aspect of taste and aroma at 24 hours of incubation time was favored or acceptable to consumers with a taste score of 3.3b and aroma of 3.3ab (scale 1-5) in the hedonic rating test. Meanwhile, at 36 hours of incubation, consumers did not like it with a taste score of 2.2a and aroma of 2.1a. This is because the longer the fermentation time can increase the acidity of the product which causes the distinctive taste and aroma of palm sap to increase.

OPTIMASI NIRA SAWIT DALAM PEMBUATAN MINUMAN SINBIOTIK DENGAN TAMBAHAN INULIN DAN KULTUR BAKTERI LACTOBACILLUS CASEI Rinaldi, Wahyu; Raja, Pada Mulia; Syukri, Muhammad; Maharani, Rhyna; Rangkuti, Ika Ucha Pradifta
Jurnal Agro Fabrica Vol. 4 No. 1 (2022): Juni 2022
Publisher : Institut Teknologi Sawit Indonesia (ITSI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47199/jaf.v4i1.178

Oil palm trunks can produce quite a lot of sap water, which is approximately 10 per day for 1 month for 1 oil palm tree that is uprooted, currently, there is not much optimal processing of palm oil with an economical selling price, for this reason, it is necessary to develop functional foods. This study aims to determine whether palm sap can be used in the manufacture of symbiotic beverage products with optimum chemical, microbiological and organoleptic qualities. The study was arranged using a non-factorial Completely Randomized Design (CRD) method with 3 treatments of incubation time, namely 12 hours, 24 hours, and 36 hours with each treatment using 6 replications so that 18 experiments were carried out. The best treatment by SNI 2981:2009 was obtained at an incubation time of 24 hours, namely with a pH of 5.2, water content is 82.50%, total dissolved solids is 17.33%, the lactic acid content is 0.81%, a total lactic acid bacteria of 2.8 x 108 and produces a minimum dense texture with sufficient acidity. The organoleptic aspect of taste and aroma at 24 hours of incubation time was favored or acceptable to consumers with a taste score of 3.3b and aroma of 3.3ab (scale 1-5) in the hedonic rating test. Meanwhile, at 36 hours of incubation, consumers did not like it with a taste score of 2.2a and aroma of 2.1a. This is because the longer the fermentation time can increase the acidity of the product which causes the distinctive taste and aroma of palm sap to increase.

Upaya Peningkatan Ekonomi Kelompok Tani Pepaya Desa Teuladan Aceh Besar Melalui Diversifikasi Produk Fathanah, Umi; Syamsuddin, Yanna; Alam, Pocut Nurul; Ernawati, Ernawati; Rinaldi, Wahyu; Munawar, Edi; Yunardi, Yunardi
Journal Of Human And Education (JAHE) Vol. 4 No. 6 (2024): Journal of Human And Education (JAHE)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jh.v4i6.2125

Desa Teuladan dikenal sebagai salah satu desa penghasil pepaya terkemuka di Kabupaten Aceh Besar, Provinsi Aceh. Pepaya banyak dibudidayakan di kebun dan di sekitar tempat tinggal penduduk desa, dengan sekitar 90% rumah tangga terlibat dalam budidaya tanaman pepaya ini. Meskipun demikian, petani pepaya menghadapi tantangan yang signifikan terkait dengan volatilitas harga. Harga pepaya sangat dipengaruhi oleh faktor-faktor seperti kondisi cuaca, frekuensi panen, dan ketersediaan pembeli. Biasanya, harga pepaya mengalami peningkatan selama bulan-bulan musim panas, sementara harganya cenderung menurun tajam selama musim hujan. Untuk meningkatkan nilai pasar pepaya pascapanen, diversifikasi produksi menjadi saus pepaya merupakan strategi yang tepat. Metodologi yang digunakan dalam inisiatif pengabdian masyarakat ini mencakup survei terhadap tantangan yang dihadapi oleh kelompok sasaran petani pepaya, diikuti dengan pendekatan terhadap permasalahan yang dihadapi kelompok tani pepaya sasaran, dilanjutkan dengan penyuluhan serta pelatihan dan praktek langsung pembuatan saus pepaya. Materi pelatihan tidak hanya difokuskan pada cara pembuatan saus pepaya, akan tetapi juga mencakup materi tentang keuangan dan pemasaran. Keberlanjutan suatu usaha akan sangat tergantung kepada pemasaran yang dijalankan. Kegiatan pengabdian dengan melakukan penyuluhan dan pelatihan tentang pembuatan saus pepaya berhasil dengan baik. Hal ini terlihat dari peran peserta yang sangat aktif dan sungguh-sungguh pada waktu mengikuti pelatihan ini. Kegiatan ini juga menciptakan suatu kegiatan kewirausahaan bagi kelompok tani pepaya desa tanpa membutuhkan modal yang banyak sehingga dapat menambah pendapatan keluarga.

Intervensi Sistem Produksi Arang Briket Pada Unit Usaha Arang di Dusun Blang Bintang, Desa Blang Thuy, Kabupaten Aceh Besar Melalui Penggunaan Pencetak Arang Briket Sistem Ulir Kontinyu Machdar, Izarul; Rinaldi, Wahyu; Thalib, Sulaiman
PESARE: Jurnal Pengabdian Sains dan Rekayasa Vol 2, No 1 (2024): Februari 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/pesare.v2i1.36785

The implementation of technological intervention in a coconut shell charcoal enterprise, facilitated by the integration of a screw briquette machine, has been a transformative initiative undertaken by the Naturi group in Blang Bintang, Blang Thuy Village, Aceh Jaya Sub-district, Aceh Besar District. The comprehensive approach to this intervention included a thorough site survey, extensive socialization efforts, meticulous procurement of equipment and materials, and dedicated training activities. The socialization phase, spanning a duration of two months, was instrumental in ensuring that the aims, objectives, and targets of the planned activities were not only understood but also internalized by the participants. The success of this phase lay in its ability to align with predefined scenarios, fostering a smooth and effective execution of subsequent activities. Results obtained from the intervention showcase the participants' successful acceptance and proficient execution of the introduced technologies. Given the potential risks associated with the handling of the delivered equipment, prioritizing work safety emerged as a critical aspect of the initiative. Looking forward, the focus of the initiative extends beyond its initial phase. Future considerations include strategies to enhance production capacity and the provision of adequate drying areas to meet growing demands. To ensure the longevity of the project, a collaborative effort between the implementer and participants has resulted in the establishment of a dedicated discussion forum through digital media. This platform serves as a dynamic space for ongoing dialogue, knowledge exchange, and the continuous improvement of the technological intervention.

Pengolahan Limbah Cair Organik dengan Microbial Fuel Cell Rinaldi, Wahyu; Nurdin, Yudha; Syahiddin, Syahiddin; Windari, Wulan; Agustina, Cut Putri
Jurnal Rekayasa Kimia & Lingkungan Vol 10, No 2 (2014): 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.v10i2.2425

Penelitian ini mengusulkan sebuah prototipe reaktor microbial fuel cell (MFC) tanpa membran beraliran kontinyu. Dinding Reaktor dibuat dari pipa PVC dan elektroda dari serat karbon. Mikroba yang ditambatkan di anoda bersumber dari larutan FloTank. Pada penelitian ini digunakan limbah organik artifisial yang dibuat dari glukosa monohidrat dengan konsentrasi 250 mg/L COD. Waktu tinggal limbah divariasikan pada 0,5; 1; 1,5; dan 2 hari. Nilai rata-rata daya listrik yang dihasilkan untuk waktu tinggal limbah 0,5; 1; 1,5; dan 2 hari berturut-turut adalah 38,02; 43,01; 45,35; 46,71 mW/m2, dan daya volumetrik yang dihasilkan adalah 111,25; 125,86; 132,71; dan 136,69 mW/m3. Persentase penurunan Chemical Oxygen Demand (COD) limbah paling tinggi diperoleh pada waktu tinggal 1,5 hari yaitu sebesar 32,26%.

Comparative Study between ADMS and CFD in Modeling Dust Dispersion from a Blasting Events in Quarry Rinaldi, Wahyu; Mukhriza, Teuku
Jurnal Rekayasa Kimia & Lingkungan Vol 8, No 2 (2011): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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

Two frequently used methods in atmospheric dispersion modeling (ADMS and CFD) were compared in this study to predict pit retention within an open quarry. Conventional Gaussian plume models developed by CERC, ADMS 3 and ADMS 4, were used to predict the pit retention. This study mimicked Fluent CFD modeling of dust dispersion of a blasting event in Old Moor Quarry. A single blast event that liberated a typical 25,000 tons of rock released 1,900 kg of Total Suspended Particle (TSP). The emission source geometry was defined as a three dimensional block volume source of 70 m normal to the face, 80 m in width and 20 m in height. It was also assumed the TSP liberated over one hour had an emission rate of 4.71x10-3 g/m3/s. The four particle sizes were defined as 2.5, 10, 30 and 75 m at mass fractions of 0.05, 0.45, 0.3 and 0.2 respectively and the particles were assumed have uniform limestone density of 2600 kg/m3. The results indicated that ADMS and model based on CFD indicates similar trend, that is, pit retention is proportional to distance from source to pit edge along wind direction and proportional to inverse quarry gradient.Keywords: dust dispersion, blasting, ADMS, CFD, pit retention

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

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.

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