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All Journal Reaktor INAQUE: Journal of Industrial & Quality Engineering
Oktaviani, Eva Pramuni
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Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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PERANCANGAN ALAT PENGUPAS SABUT KELAPA MENGGUNAKAN METODE VDI 2221 Prima, Febri; Japri, Bryan Anthony; Kurniawan, Eddy; Lubis, Gita Suryani; Ivanto, Muhammad; Ivontianti, Wivina Diah; Oktaviani, Eva Pramuni
Inaque : Journal of Industrial and Quality Engineering Vol 9 No 2 (2021)
Publisher : Teknik Industri Unikom

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1478.799 KB) | DOI: 10.34010/iqe.v9i2.5147

Abstract

The increasing demand for coconut productin in Sungai Kupah Village, Kuburaya Regency has resulted in workers needing a tool that can complete work more quickly and effiently. The tools used today stil use wedges where their use takes a long tie because the process in the process relies on human power. In additin, with non-ergonomic work positins, workers can also experience several work-related diseases such as back pain and back pain. The objecties of this research are (1) Designing an ergonomic coconut peeler according to consumer needs (2) Testig the performance of the tool (3) Testig worker fatiue before and aftr using the tool (4) Testig the level of consumer satifactin. The solutin used in this study is the VDI 2221, CVL method approach, measuring tool performance and analyzing the level of satifactin. The results obtained in this study are (1) produce a tool design according to consumer needs and have paid attntin to ergonomic aspects (2) The design of this tool produces a fairly fast stripping tie of 143 peeling fruit/hour when compared to tools using a wedge, namely 92 peeling fruit/hour (3) Worker fatiue test aftr using this tool showed 14.42 % of coconut owners, 11.20 % of worker 1 and 10.48 % of worker 2. This test resulted in CVL below 30% where workers did not experience fatiue. (4) Respondents feel comfortable with the designed tool as evidenced by the results of the 4.8 Linkert scale. Meanwhile, for ease of operatin, the result is 4.3, which means that respondents fid it easy to operate the designed tool. The conclusion in this study is that the currently designed tools are quite effctie, ergonomic and able to reduce the level of worker fatiue.
The Effect of Variation of Palm Fronds Absorbent Concentration In Adsorption Process to Reduce Free Fatty Acid Content on Tengkawang Oil Puspita, Filda Agum; Oktaviani, Eva Pramuni; Rakasiwi, Rinjani Ratih; Ivontianti, Wivina Diah
Reaktor Volume 23 No.3 December 2023
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.23.3.92-100

Abstract

Tengkawang oil that hasn’t through purification process contains free fatty acid that can affect its quality, where this essence is the polluter that must be removed because it can caused a rancid. The removal of free fatty acid content on Tengkawang oil was done through adsorption process utilizing palm fronds adsorbent by using its cellulose content. Palm fronds went through dilegnification process using 10% of NaOH, then adsorption process was conducted with adsorbent concentration variety 5, 10, 15, 20 and 25%. Adsorbent characterized by utilizing FTIR and SAA, from FTIR result shows that palm fronds contain berlignocellulose function cluster, after delignification the C=C lignin compound function cluster still can be found on FTIR result and after adsorption O-H cluster went through intensity decrement which shows that cellulose content and hydroxyl (-OH) cluster reacted with adsorbat. Furthermore, there’s absorption on C-H function cluster that indicates the existence of free fatty acid compound and other polluter that adsorbed by palm fronds adsorbent. The characteristic of palm fronds adsorbent after delignification process was conducted shows the pore size is on micropore range with surface area of 6.480 m2/g, pore volume of 0.01138 cc/g and pore radius of 12.4 Å. The result of the research shows decreasing percentage of free fatty acid, capacity value and adsorption effectiveness of Tengkawang oil that the highest is on adsorbent concentration as much as 25% with decreasing percentage of free fatty acid as much as 4.68%, adsorption capacity as much as 207.19 mg/g and adsorption effectiveness as much as 36.28%. Keywords: adsorption; delignification; free fatty acid; tengkawang oil
Co-Authors Eddy Kurniawan Febri Prima GITA SURYANI LUBIS Japri, Bryan Anthony MUHAMMAD IVANTO Puspita, Filda Agum Rakasiwi, Rinjani Wivina Diah Ivontianti, Wivina Diah