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All Journal Agrointek Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Journal of Science and Applicative Technology Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Dwi Cahyani
Biosystems Engineering, Institut Teknologi Sumatera (ITERA)
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Materials Science & Nanotechnology Mechanical Engineering

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PHYSICAL CHANGES OF ANDALIMAN (ZANTHOXYLUM ACANTHOPODIUM DC.) IN PACKAGING DURING LOW-TEMPERATURE STORAGE David Septian Sumanto Marpaung; Raizummi Fil'aini; Amna Citra Fahrani; Dwi Cahyani; Ayu Oshin Yap Sinaga
AGROINTEK Vol 13, No 2 (2019)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (493.378 KB) | DOI: 10.21107/agrointek.v13i2.5543

Abstract

Zanthoxylum acanthopodium, locally known as Andaliman, is exotic spices which grown in North Sumatera. Several investigation shown that the special taste and aroma comes from pericarp of Andaliman. However, the pericarp of Andaliman is easily degraded. The proper postharvest handling of Andaliman is necessary to preserve fresh Andaliman for long time. Previously, Andaliman has been preserved in packaging under room temperature storage. Further investigation of Andaliman preservation in packaging under low temperature storage would help reduces the postharvest losses. In this study, the physical changes of Andaliman in various packaging under low-temperature storage were observed. The results shown that within 2 days, the pericarp of Andaliman in paper packaging was shrunk, similarly found in control without packaging. Meanwhile, the pericarp of Andaliman in aluminum foil and PP plastic were found normal in day 3. This result indicated that in low-temperature, Andaliman in Aluminum foil was recommended for best postharvest handling.
Sel Bahan Bakar Berbasis Mikroba-Tanaman (P-MFC) Sebagai Sumber Energi Listrik; Prinsip Kerja, Variasi Desain, Potensi dan Tantangan Dwi Cahyani; Agus Haryanto; David SS Marpaung; Raizummi Fil’aini
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 2 (2020): Juni 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.711 KB) | DOI: 10.23960/jtep-l.v9i2.112-121

Abstract

AbstractPlant Microbial Fuel Cell or known as P-MFC, is an emerging technology to produce electricity. P-MFC is projected as a possible solution in developing an alternative source of electricity that is highly available and sustainable. P-MFC is not releasing pollution during the running time. Hence, the only side product of this technology is water. The electricity could be harvested in situ, or directly on the reactor site location. P-MFC shows unique symbiosis between the plant and the microbe, which live around the plant roots area. Naturally, the microbe will eventually degrade the organic matter and convert it to electricity with the support of a particular P-MFC design. The P-MFC design for research purposes has already been various compare to the initial introduction.  Besides, the plant type occupied has been diverse as well. This article reviews four main parts of P-MFC technology. Firstly, an explanation of fundamentals  processes in P-MFC and its plant. Secondly, about the P-MFC design variations and its power output.   Thirdly, about P-MFC power potential in Indonesia. And lastly, about the challenge of P-MFC application.Keywords: bioenergy, P-MFC, fuel cell, microbe, bioelectricityAbstrakSel Bahan Bakar Berbasis Mikroba-Tanaman atau lebih dikenal dengan Plant-Microbial Fuel Cell (P-MFC) adalah teknologi baru terbarukan untuk memproduksi energi berupa listik. P-MFC menjadi solusi potensial dalam pengembangan energi listrik alternatif yang mudah didapatkan dan ramah lingkungan. P-MFC tidak menimbulkan polusi saat digunakan karena hasil samping satu-satunya adalah air. Listrik yang dihasilkan dapat dipanen langsung dilokasi peletakkan reaktor P-MFC. Lebih lanjut, teknologi P-MFC memanfaatkan keberadaan mikroba yang hidup di sekitar area perakaran tanaman. Secara alamiah mikroba akan mendegradasi bahan organik dan kemudian mengubahnya menjadi listrik dengan dukungan desain P-MFC tertentu. Desain P-MFC sudah sangat berkembang sejak awal mula diperkenalkan. Selain itu, jenis tanaman yang digunakan juga semakin beragam. Pada tulisan ini, akan diulas empat hal penting mengenai PMFC. Pertama-tama, proses dasar pada teknologi P-MFC dan jenis tanaman P-MFC.  Kedua mengenai variasi desain P-MFC dan efektifitasnya dalam menghasilkan listrik. Ketiga, tentang potensi P-MFC di Indonesia. Dan terakhir, mengenai tantangan utama dalam aplikasi P-MFC.Kata kunci: energi terbarukan, P-MFC, sel bahan bakar, mikroba, listrik-bio
PHYSICOCHEMICAL CHANGES OF DWARF BANANA (Musa acuminata) DURING VACUUM PACKAGING STORAGE David Septian Sumanto Marpaung; Dwi Cahyani; Ni Wayan Arya Utari; Anggia Indriyani; Resa Apriliani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.193-199

Abstract

Banana is tropical fruit contain health nutrition and fiber. Dwarf banana is one of type banana that well growth in Indonesia, particularly in Lampung Province. However, its economic value become exported commodities is limited by its short shelf life. In this study, the physicochemical changes were observed under vacuum packaging storage, in order to know the potency of vacuum packaging to prolong the shelf life of dwarf banana. The results showed that the vacuum packaging could reduce weight loss compare to other treatments. The maintenance of green color by vacuum packaging was also showed positive result. Furthermore, the dwarf banana under vacuum packaging storage was also showed lowest TSS, in other words, the dwarf maturity could be delayed. These results suggested the vacuum packaging could be used as potential packaging for dwarf banana Keywords: dwarf banana, vacuum packaging, postharvest, physicochemical properties
Studi Inhibisi Korosi Pipa Sistem Pendingin Sekunder RSG-GAS BATAN Oleh Karboksimetil Kitosan Edwin Rizki Safitra; Dwi Cahyani; Idra Herlina
Journal of Science and Applicative Technology Vol 6 No 1 (2022): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v6i1.764

Abstract

Corrosion is one of the unavoidable problems in nuclear reactor cooling systems that use water as a cooling medium. secondary cooling systemThe Reaktor Serba Guna–G.A. Siwabessy (RSG-GAS) is an open recirculation cooling system that uses carbon steel pipes for water delivery. Due to the obvious open recirculation cooling system, components in the system interact with oxygen in the air, resulting in corrosion. Corrosion control in the RSG-GAS has been accomplished through the continuous injection of zinc phosphate (ZnPO4) inorganic inhibitors, but the use of these inhibitors can contribute to environmental pollution and health issues. To resolve these concerns, environmentally-friendly corrosion inhibitors such as carboxymethyl chitosan have been used. CMC (carboxymethyl chitosan) is widely used because it is more amphiprotic than other chitosan derivatives. Because of the number of functional groups in carboxymethyl chitosan, it is an effective corrosion inhibitor. The corrosion inhibition test by CMC on carbon steel in the secondary cooling water system was performed using a weight-loss method in this study with variations of 0, 1, and 3 g CMC. The steel material's composition is 0.23% C, 0.17% Si, 0.008% P, 0.004% S, 0.012% Cr, and 0.037% Mn. According to the study, the corrosion rate generated at variations of 0, 1, and 3 g CMC is 8.237, 5,645, and 5,113 mpy, respectively. According to the data, the addition of CMC can reduce the weight loss of steel due to corrosion because CMC contains many amphiprotic groups that are adsorbed on the surface in half-full d Fe orbitals.
PENGEMBANGAN LISTRIK TENAGA BIOGAS SKALA RUMAH TANGGA UNTUK DAERAH TERPENCIL DI INDONESIA Agus Haryanto; Sugeng Triyono; Mareli Telaumbanua; Dwi Cahyani
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 8 No 2 (2020): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1046.031 KB) | DOI: 10.29303/jrpb.v8i2.187

Abstract

Kesenjangan ketersediaan listrik antara daerah perkotaan dan terpencil merupakan salah satu masalah yang harus diselesaikan. Sebagian daerah terpencil menyediakan listrik swadaya menggunakan generator diesel. Salah satu potensi energi terbarukan yang dapat dieksploitasi adalah pemanfaatan biogas dari limbah peternakan sebagai bahan bakar genset. Penelitian ini bertujuan untuk memaparkan potensi genset tenaga biogas skala rumah tangga sebagai salah satu solusi yang menjanjikan untuk melistriki daerah atau pulau terpencil di Indonesia. Sebagai teknologi yang sudah mapan, teknologi biogas menawarkan berbagai keuntungan sebagai sumber energi terbarukan. Teknologi biogas juga menawarkan produk samping berupa pupuk organik yang berkualitas tinggi. Genset berbahan bakar biogas skala rumah tangga dapat dimodifikasi dari genset berbahan bakar bensin berukuran kecil yaitu dengan menambahkan jalur biogas pada karburator mesin. Hasil kajian menunjukkan bahwa genset skala rumah tangga berbahan bakar biogas merupakan salah satu alternatif pilihan yang baik untuk pengembangan listrik di wilayah terpencil. Manfaat maksimal diperoleh melalui sistem terintegrasi yang memadukan kegiatan kebun/pertanian, peternakan, dan penyediaan listrik biogas. Tingginya investasi pembuatan digester dan harga genset biogas serta tidak adanya insentif bagi listrik biogas merupakan kendala yang perlu diatasi dengan melibatkan para pemangku kepentingan.
Co-Authors Agus Haryanto Agus Haryanto Amna Citra Fahrani Anggia Indriyani Ayu Oshin Yap Sinaga David SS Marpaung Edwin Rizki Safitra Idra Herlina Mareli Telaumbanua Marpaung, David Septian Sumanto Ni Wayan Arya Utari Raizummi Fil’aini Resa Apriliani