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Heryana, Ghany
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Alat Pengering Biopelet Tipe Rak Dengan Daya 500 Watt Kamal, Dianta Mustofa; Heryana, Ghany
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 8, No 2 (2023): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v8i2.4783

Abstract

Drying of biopellets is currently still using the conventional method, namely by drying directly under the hot sun. This method is not optimal when the weather is rainy or cloudy, and requires a large area of land. Based on these problems, the purpose of this study was to test the performance of the biopellet dryer and determine the drying time to reach the moisture content in accordance with SNI 8021:2014. The test was carried out by drying 5.000 grams of biopellet samples and seeing the average of the final mass. The average final mass of each test sequentially is 4,785 grams, 4,581 grams, 4,385 grams, 4,016 grams, 3,804 grams, and 3,595 grams. The reduction in water content obtained within 180 minutes was 28.12% with the initial water content in biopellets of 40%. The total water content obtained from the drying is 11.88%. Performance of the biopellet dryer with the power used by this biopellet dryer is 500 Watt. Capable of drying 5.000 grams biopellet with an initial moisture content of 40%. Room temperature is 120°C with a drying rate of 468.667 Gram/hour. Dry biopellet within 180 minutes with a moisture content of 11.88% according to the standard of SNI 8021:2014.  Keywords: Biopellet Drying, Dryer, Moisture Content, Power
AZOLLA AND DUCKWEED PYROLYSIS PROCESS TO BECOME ENVIRONMENTALLY FRIENDLY FUEL Kamal, Dianta Mustofa; Syuriadi, Adi; Gunadi, Gun Gun R; Heryana, Ghany
Jurnal Ilmiah Teknologi dan Rekayasa Vol 30, No 1 (2025)
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/tr.2025.v30i1.13921

Abstract

Pyrolysis is a thermochemical conversion process carried out to efficiently convert biomass, such as azolla and duckweed, to produce environmentally friendly fuels. This study aims to compare the results of the pyrolysis process of azolla waste with duckweed into fuel. This study uses a pyrolysis reactor to produce fuel products whose main products are syngas, bio-oil, and environmentally friendly carbon charcoal. From this study, it was found that azolla only produces 0.6% oil. This is 2.07% lower than duckweed, so duckweed is a potential raw material for bio-oil. On the other hand, azolla is able to produce more syn-gas fuel than duckweed, as evidenced by the longer ignition of azolla than duckweed.
OPTIMALISASI DESAIN JIG VALVE SPRING COMPRESSOR DENGAN DOUBLE FLANGE UNTUK EFISIENSI PELEPASAN DAN PEMASANGAN KATUP MESIN Dewi, Renita; Fatin, Shafa Amatullah; Wijaya, Krisna Chandra; Ramadhani, Anisa; Heryana, Ghany
Jurnal Teknologi Terapan Vol 11, No 2 (2025): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v11i2.703

Abstract

This research aims to develop a new design of Jig Valve Spring Compressor that uses double flange, replacing the previous design that only uses one flange. This new design, which is still under development, has the potential to increase the speed and efficiency of the cylinder head overhaul process which has previously shown an increase in time efficiency of up to 82%. The development of this design is based on ergonomic principles using the OWAS  method to minimize the risk of musculoskeletal injuries and improve the working comfort of technicians during the engine valve removal and installation process.
Pembentukan Lapisan Anodik Aluminium Oksida Melalui Metode Anodisasi Untuk Proses Pewarnaan Dyeing Pada Aluminium Rizkia, Vika; Susanto, Iwan; Gunadi, Gun Gun Ramdlan; Heryana, Ghany
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 2 (2023): July
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i2.53782

Abstract

Anodisasi adalah proses elektrokimia ramah lingkungan untuk memproduksi lapisan oksida tipis hingga berukuran nanometer pada permukaan logam sehingga menjadi lebih dekoratif, tahan lama, dan tahan korosi. Proses anodisasi dalam larutan H2SO4 digunakan guna mempersiapkan lapisan anodik aluminium oksida (AAO) untuk selanjutnya dilakukan pewarnaan dengan metode dyeing. Pengaruh rapat arus dan waktu celup anodisasi terhadap permukaan hasil pewarnaan serta ketahanan korosi logam aluminium di investigasi dalam penelitian ini. Spesimen aluminium murni dilakukan proses anodisasi dalam larutan 16% H2SO4 dengan rapat arus 1, 3, dan 5 A/dm2 selama 40 dan 60 menit untuk selanjutnya dilakukan pencelupan ke dalam larutan dyeing non elektrolitik. Hasil pewarnaan menunjukkan bahwa tingkat penyerapan zat warna paling tinggi dalam parameter rapat arus 3 A/dm2. Selain itu, peningkatan waktu celup hingga 60 menit dapat meningkatkan kepekatan warna yang diserap. Pengujian korosi menggunakan metode salt spray memperlihatkan bahwa proses anodisasi dan pewarnaan dapat meningkatkan ketahanan korosi pada logam aluminium. Hasil pengujian kekerasan Vickers menunjukkan bahwa semakin tinggi rapat arus menghasilkan penurunan kekerasan rata-rata pada permukaan aluminium hasil anodisasi.
Pengaruh Variasi Campuran Bentonit Terhadap Karakteristik Pasir Cetak Untuk Proses Sand Casting Shieddieque, Apang Djafar; Putra Nugraha, Ismail; Zaenal Muttahar, Mochammad Iqbal; Heryana, Ghany
Rekayasa Vol 15, No 3: Desember 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i3.16194

Abstract

The casting process is widely used because it has the advantage of being able to make products with small dimensions to very large dimensions, the use of materials is more efficient, the casting products can be directly used. However, in the casting process, the main triggers for the formation of defects are the nature of the mold, low permeability, low molding compressive strength, low sintering point, unsuitable sand grain distribution, so research is needed to obtain the right type of molding sand as a sand mold in metal casting. The only type of additive is bentonite. Bentonite can absorb water and expands between 8-15 times and remains dispersed in water for a certain period of time. This study aims to examine the effect of a mixture of variations of local bentonite and Australian bentonite on the characteristics of the molding sand for the sand casting process. The tests carried out are in the form of size distribution testing, X-Ray Diffraction, water content testing, compressive strength, and permeability measurements. Bentonite was varied into 5 variations of the mixture with a difference of 20% in each mixture. The results of the large size distribution of silica sand grains were 37.6 GFN. The results of XRD testing of local bentonite showed a higher content of calcium compounds and Australian bentonite contained higher sodium compounds. The largest water content test value is 5.825%. The largest compressive strength test value is 2.7 Kgf /cm2.
Co-Authors Adi Syuriadi Ainun Nidhar, Ainun Amri Abdulah Auberta, Genia Bachtiar, Mochamad Faisal Bayu Lesmana, Bayu Choirul Anwar Dewi, Anissa Puspa Dewi, Renita Fatin, Shafa Amatullah Gun Gun R Gunadi, Gun Gun R Gunadi, Gun Gun Ramdlan Hartman, Bemly Irawan, Adhi Chandra Iwan Susanto Izzat, Albait Malikul Jatira Kamal, Dianta Kamal, Dianta Mustofa Kusmayanto, Ridwan Lailiah, Azizatul Matahelumual, Marselino Mutiara Andayani Komara Nizarudin Nursalam, Rachmat Putra Nugraha, Ismail Rajab, Dede Ardi Ramadhan, Mochammad Tendi Noer Ramadhani, Anisa Riswandi, Muhammad Andi Rizka, Hawa Salim, Asep Yusapra Setiawan, Yuda Shieddieque, Apang Djafar Shieddique, Apang Djafar Subekhi, TB. Sukarman Sukarman Suriaman, Irwan Vika Rizkia Wahyuni, Rani Sri Wijaya, Krisna Chandra Yusuf, Relavi Ahmad Zaenal Muttahar, Mochammad Iqbal