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All Journal Buletin Udayana Mengabdi Jurnal Energi Dan Manufaktur Jurnal Teknosains Rekayasa Mesin Nomosleca ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Journal of Mechanical Engineering Science and Technology Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan EPI International Journal of Engineering Mechanical Engineering for Society and Industry
I Gusti Ngurah Nitya Santhiarsa
Program Studi Teknik Mesin Fakultas Teknik Universitas Udayana
Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Transportation

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Journal : Journal of Mechanical Engineering Science and Technology

 1 
Effect of Variations in Pyrolysis Reactor With Glass Wool Equipped and Without Glass Wool on the Weight of the Oil Produced Santhiarsa, IGN Nitya
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i22021p089

Abstract

Currently, plastic waste is a very serious threat because plastic waste pollution can harm all living things around and also harm the environment. The increasing volume of plastic waste is due to the lack of processing technology, so that the volume of plastic waste is increasing day by day. Plastic is a material that is difficult to decompose because it is non-biodegradable. One application of plastic waste processing technology offered in this study is to use the pyrolysis principle. Pyrolysis is a method of converting plastic into fuel oil through a thermal decomposition process without the use of oxygen. The pyrolysis process used with a variety of reactors equipped with glass wool and reactor variations without glass wool. The purpose of this study was to compare the yield of pyrolysis oil with a variety of reactors equipped with glass wool and reactors without glass wool. The plastic used is OPP (oriented polypropylene), with a constant reactor heating temperature of 200° C. The pyrolysis process is carried out for 1 hour each test, and the condenser cooling temperature is 28° C. Based on the results of the research, the reactor variation with glass wool got the highest oil weight of 175 grf, while the reactor variation without glass wool got the lowest oil weight of 17 grf. With a variety of reactors equipped with glass wool, the heat generated is more concentrated into the reactor core, resulting in higher oil weight and a more efficient pyrolysis process.
Mechanical Characterization of NaOH-Treated Agel Fiber-Cotton Composites Santhiarsa, IGN Nitya; Kusuma, I Gusti Bagus Wijaya; Negara, I Gede Artha
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 7, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v7i22023p214

Abstract

Composites comprising two or more distinct materials are fabricated to enhance the mechanical properties of the constituent materials. A common approach for generating composites is vacuum infusion. This technique enables the infusion of two materials utilizing a vacuum. In the field of composite science, textile composites have emerged as an important new development. Agel rope, derived from twisting agel fibers, exhibits inferior bending strength and elongation compared to ropes fabricated from synthetic fibers. Moreover, agel rope is susceptible to bacterial decay. This study aims to characterize the mechanical properties of textile composites comprising woven agel rope subjected to NaOH treatment. Specimens in the longitudinal (warp) shows maximal load bearing capacity, as determined by experimental results. Samples treated with 5% NaOH tolerated peak loads of 51.12 N prior to failure, with an associated deflection of 3.18%. Specimens in the transverse (weft) of the woven cotton demonstrated maximum load of 40.75 N at 0.9% deflection. The maximum stress was 25.67 MPa. Similar to agel rope, NaOH treatment removes adhering contaminants from cotton fibers, thereby enhancing their strength. However, NaOH concentrations exceeding 7.5% extract cellulose, damaging the fiber ultrastructure.
Impact of Natural Polymer Proportions on the Fire-Retardant Properties of Bioplastics Santhiarsa, I Gusti Ngurah Nitya; Dwidiani, Ni Made; Tenaya, I Gusti Ngurah Putu; Negara, I Gede Artha
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 8, No 2 (2024)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v8i22024p434

Abstract

This research investigates the influence of varying proportions of natural polymers on the fire-retardant properties of bioplastic. Tapioca starch (Manihot esculenta) and corn starch (Zea mays) were selected as the bioplastic materials, with different weight fractions employed in the analysis. These materials, as naturally occurring polymers, are biodegradable and serve as promising components in the development of bioplastics. Fire resistance testing was conducted in accordance with ASTM D635-03, utilizing weight ratios of tapioca to corn starch at 70:30, 60:40, and 50:50. The results included photographic documentation of each specimen alongside the corresponding outcomes from the fire resistance tests. These images provide insight into the physical condition of the specimens prior to testing, emphasizing any notable morphological features that may affect their fire resistance properties. The optimal burning rate was observed in the bioplastic with a 50:50 weight fraction ratio of tapioca starch to corn starch, which exhibited a combustion rate of 8.420 mm/s. Additionally, the bioplastic with the highest weight loss rate, recorded at 0.0346 g/s, was also composed of a 50:50 weight fraction of the two starches. The observed increase was 2.36% relative to the 60:40 weight fraction and 13% relative to the 70:30 weight fraction. This increased weight loss rate can be attributed to the higher corn starch content, which is characterized by inherent flammability due to its structural composition.
Co-Authors Achmad Assad Sonief Andoyo Rifky Widighda Benatyar - CI Putri Kusuma K Daud Simon Anakottapary Dewa Ngakan Ketut Putra Negara Dwidiani, Ni Made Eko Marsyahyo I Gusti Agung Alit Suryawati I Gusti Bagus Wijaya Kusuma I Gusti Ketut Puja I Gusti Ngurah Priambadi I Gusti Ngurah Putu Tenaya I Kade Agus Sugiarta I Ketut Adi Sugita I Ketut Suarsana I Made Parwata I Nengah Suarnadwipa I Nyoman Budiarsa . I Nyoman Gede Wardana I Putu Agus Tina I Wayan Bandem Adnyana I Wayan Lega Suprapto Ida Bagus Gde Widiantara JAYA, KOMANG ALIT KUMARA Kelvin Ryanta Tanato Ketut Astawa Komang Alit Kumara Jaya Luh Putu Ike Midiani M.Pd S.T. S.Pd. I Gde Wawan Sudatha . Negara, I Gede Artha Negara, Komang Metty Trisna Ni Made Dwidiani NPG Suardana Putu Wijaya Sunu Si Putu Gede Gunawan Tista Sibarani, Relius Zakaria Suardana, Ngakan Gede Putu Suprapto, I Wayan Lega Tjokorda Gde Tirta Nindhia Wayan Nata Septiadi Willy Satrio Nugroho