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INDONESIA
Journal of Research and Technology
Published by Universitas NU Sidoarjo
ISSN : 24605972     EISSN : 24776165     DOI : -
Core Subject : Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Industrial & Manufacturing Engineering
Journal of Research and Technology published since 2015 contains a collection of a selected articles from the results of research and study of literature which is relevant to industrial , chemical, and environment engineering. Target readers of the Journal of Research and Technology are scientists, academics, and practitioners from various fields of industry.
Arjuna Subject : -
Articles 454 Documents
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Optimasi Removal Logam Pb Sungai Porong Sidoarjo Terdampak Lumpur Lapindo Menggunakan Biokoagulan Ekstrak Daun Mangga Asmarani, Nabila Nur Fauziyah Putri; Basri, Moch Faisal; Sabri, Rajib Naji; Hamidah, Laily Noer; Afkar, Khilyatul
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1116

Abstract

The Lapindo mud is an eruption event caused by excessive soil excavation, leading to contamination in the surrounding area, including the Porong River. Biocoagulants are natural coagulants that can act as flocculants to bind pollutants. This study aims to determine and identify the effectiveness of mango leaves as a biocoagulant in reducing turbidity and heavy metals in the Porong River water. The method used is maceration using ethanol with a concentration of 96% and 70%. The use of different ethanol concentrations creates diverse sample variations. Sample treatment with the biocoagulant involves both rapid and slow stirring. From the results of the study, the maximum reduction of Pb is achieved in variation E using 0.06 ml of 96% ethanol, with 20 minutes of rapid stirring and 40 minutes of slow stirring, resulting in an efficiency of 79.31%. For Cd, the best reduction efficiency is in variation J using 0.06 ml of 70% ethanol, with 15 minutes of rapid stirring and 30 minutes of slow stirring, resulting in an efficiency of 92%. The highest TDS reduction is observed in sample variation F. The findings suggest that mango leaf extract can serve as a natural biocoagulant to reduce the levels of heavy metals in the water of the Porong River.
Analysis of Consumer Preferences on Mineral Water Packaging from Perspective a Product Design Jakaria, Ribangun Bamban; Iswanto
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1150

Abstract

The bottled water market is projected to be the largest beverage category by volume worldwide. This is one of the reasons why the growth rate of the packaging industry in Indonesia is growing rapidly. However, with the increasing use of plastic as a basic material for mineral water packaging, the recycling or recycling process may be difficult to carry out so that the impact caused by plastic pollution can be minimized, so packaging materials and information on material use become important. This research needs to be carried out to find out the importance for companies to know and understand the world's efforts in campaigning to go green as a joint effort to care about the environment and the ability to create products with environmentally friendly packaging. The aim is to analyze consumer preferences for mineral water packaging designs available on the market, to the attributes attached to the product, especially the packaging materials and product information conveyed. The method used is utility analysis, the results of this research are that the observed attributes can inform and be used as recommendations for creating a packaging design that can continuously facilitate consumers and measure how important the ingredients and information on the packaging influence it. So, there are efforts to improve the design attributes of existing mineral water packaging products, to influence consumer preferences in making purchasing decisions for these products.
A Potential and Characteristics Identification of Nanoemulsions Production from CPO using Sonication Methode Setyowati, Sekar Ayu
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1153

Abstract

Emulsions are colloidal dispersions of liquids/phases/droplets that do not mix with other liquids, which generally consist of an oil phase and an aqueous phase. Based on the dispersed phase particle size, stability, and appearance emulsions are divided into three categories: conventional emulsions, microemulsions, and nanoemulsions. Sonication is one of the most widely developed methods as it is proven to be more effective in producing nano-sized particles when compared to conventional methods. This research is a preliminary research to determine the best formulation for the preparation of emulsion from CPO using sonication method and to determine the characteristics of CPO emulsion as well as to develop the potential usefulness and economic value of CPO.  The variations were 1, 3, 5, 7, 9% (v/v) CPO with distilled water and 5 ml of tween 80 as surfactant. The smallest particle size was obtained in the variation with the amount of CPO 1 ml, which was 188.4 nm and the PDI (Polydispersity Index) value was 0.663, indicating that the particles produced were heterogeneous. Thus, the emulsion produced had a pH between 4-5, a viscosity of about 1 cp, and had good stability during the 14 days of observation.
Analysis of Integrated Battery Energy Storage System with 1 MW Solar Power Plant Amalia, Rif'ah; Sholihah, Fifi Hesty; Daffa, Halim Achmad
Journal of Research and Technology Vol. 9 No. 2 (2023): JRT Volume 9 No 2 Des 2023
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v9i2.1155

Abstract

The research aims to evaluate the efficiency of BESS and provide recommendations for its improvement. Efficiency calculations involve comparing the input and output energy of BESS, utilizing data retrieved from the Rapid SCADA system in the Control Room (CR) of PLTS. The main findings of this study indicate an overall BESS efficiency of 62.95% and a specific efficiency of 50% for the year 2023. The observed lower efficiency is attributed to a charging system employing excessively high voltages. This overvoltage charging also contributes to an estimated 17% increase in BESS battery degradation.
Synthesis of Poly Lactic Acid from Lactic Acid Using Direct Polycondensation Method Using Al(DS)3 and AlCl3 Catalysts Aziz, Ahmad Musonnifin; Widjaja, Tri; Ni’mah, Hikmatun
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1163

Abstract

Poly Lactic Acid (PLA) is a type of polymer that is widely researched because it can meet the requirements for biodegradable polymers and can be used in several of applications. Making PLA using the direct polycondensation method is carried out in 3 process stages, namely dehydration, polycondensation and recrystallization. Dehydration was carried out at 130℃ for 1 hour. Polycondensation was carried out at varying temperatures of 160℃, 180℃ and 200℃ with a concentration of 0.15% for 6 hours. In the meantime, 50 ml of methanol was added, and vacuum conditions were used to carry out the recrystallization process. After that, the viscosity method was used to determine PLA's molecular weight. The highest molecular weight and other properties of PLA, such as its functional groups and thermal behavior, are the aim of this study. The findings of the study indicate that PLA has its maximum molecular weight at 180°C, where it is 15576 gr/mol for PLA+Al(DS)3 and 10771 gr/mol for PLA+AlCl3. The PLA+Al(DS)3 and PLA+AlCl3 spectra display the same bands in the stretching and bending vibration modes, according to the FTIR test. Meanwhile, in the TGA analysis, the highest decomposition was shown by PLA+Al(DS)3 at a temperature of 365℃.
Characteristics of Egg Roll Product with Treatment Proportions of Kimpul-Mung Bean Composite Flour: - Puspitasari, Diana; Noerhartati, Endang; Mujianto
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1165

Abstract

Kimpul has potential raw material for egg rolls. The limitation is low protein which can be overcome by adding high protein ingredients, which is green beans (Vigna radiata). This research aims to find egg roll formulations and determine their characteristics. The research using a completely randomized factorial design. The test parameters are yield, proximate tests (water, ash, fat, protein, carbohydrates), and sensory tests (color, aroma, taste and texture). Parametric data was analyzed using analysis of variance (ANOVA). If the ANOVA test show real difference (significance < BNT 5%), then continue with Least Significant Difference test. Ordinal data from sensory tests were analyzed using Friedman Test, and descriptive analysis. The results showed that treatment interaction had no significant effect on the yield, water, carbohydrate, ash, fat, and protein content, but had a single significant effect on the yield. The treatment of the proportion of kimpul composite flour and green bean flour had a single significant effect on water content. The results of Friedman test showed that treatment proportion of kimpul composite flour and green bean flour with eggs addition had a significant effect on aroma, but had no significant effect on color, texture and taste of egg rolls. ​
Developing an interactive graphical user interface for the flexible acceptance sampling plan Darmawan, Armin; Bohari, Abdul Rahman
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1170

Abstract

Acceptance sampling plan is one popular approach since decades ago to determine the quality of the lot. Many researchers have developed the acceptance sampling plan in various perspectives and contexts. Generally, two performance measurements are used to evaluate the performance of the acceptance sampling plan including the operational characteristics (OC) and average sample number (ASN). The developed acceptance sampling plan can be used by practitioners to select the appropriate acceptance sampling plan to sentence the quality of the lot. The practitioner can access the tables provided to see the sample requirement and the critical value as the threshold to sentence the lot's quality, then conduct measurements and calculate the sample critical value manually. Further, the practitioner can compare the measured critical value and the threshold critical value. This process is time-consuming, needs several stages, and tends to open human errors in calculating. In this study, the interactive system is developed to reduce the time-consuming, eliminate the stages, and prevent human error. The interactive system is friendly-used, easy to calculate, and provides quick decision-making.
Usulan Perbaikan Proses Changeover Bagian Upper di PT XYZ Menggunakan Single Minute Exchange Of Die (SMED) Susanto, Dani; Putra, Boy Isma
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1203

Abstract

PT XYZ is a manufacturing company engaged in the production of leather shoes. In carrying out production activities, the company prioritizes quality production results and good productivity levels. The problem with the company was the high time set up changeover of the engine in the upper division. A change of engine is required to work on shoe products in this division. This current set up changeover caused the production process to be interrupted and timed out. The number of set up changeover times reaches 119.16 minutes for one set up changeover. This study aims to find out the factors that cause the changeover set up process and improve with the Single Minutes Exchange of Dies (SMED) method. Fishbone diagrams produce that long cause set up changeover due to method, human, machine and environmental factors. With the implementation of the SMED method, 25 internal activities were converted into 12 internal activities. This change resulted in an engine setup time of 119.16 minutes to 55.46 minutes and a 46.5% reduction in engine set up time.
The effect of quality control standard implementation for quality improvement of the casting process on the jewellery manufacturing industry Erwin; Chan, Yefri; Lenardo, Yovi; Supriatna, Ade; Faturachman, Danny
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1206

Abstract

The high demand for jewellery products increases significantly every year, but the export requirements of the products demand high quality. So, efforts are needed to improve quality, support cost savings, reduce energy needs, and improve work safety, especially in the casting process of jewellery products. This study aims to analyze the implementation of practical quality control standards to improve the quality of jewellery product casting. This research method uses a Plan-Do-Check-Action process approach that refers to ISO 9001, 14001 and 45001 standards. Implementing the PDCA (Plan-Do-Check-Action) process approach adopted in developing quality control methods in the jewellery casting process proved effective, resulting in casting shrinkage of 0.2 kg below the established standard of 0.7 – 1 kg. Controlling temperature casting below the melting point can also provide energy savings and heat control of the casting process to reduce occupational safety and health hazards. PDCA quality control methods can improve the quality of casting jewellery products by reducing porosity defects and shrinkage, saving energy, and reducing occupational safety hazards. This research provides an effective quality control method for the jewellery casting production process regarding quality improvement, environmental management, and safety to achieve the Company's sustainability.
Jurnal Integrasi Metode Servqual dan Design for Six Sigma Untuk Peningkatan Layanan Jasa: (Studi Kasus Berkat Jaya Ekspedisi Surabaya) Fanni Pratama, Yoga; Suhartini
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1225

Abstract

Perusahaan Berkat Jaya Ekspedisi Surabaya merupakan salah satu perusahaan jasa transportasi khususnya pada jasa pengiriman barang. Perusahaan masih memiliki beberapa aktivitas yang mengalami permasalahan seperti, kerusakan barang, kehilangan barang, human error, delay dan permasalahan lainnya. Penelitian ini memiliki tujuan yaitu, untuk menentukan gap yang terjadi pada kualitas layanan yang harus diperbaiki, menentukan nilai DPMO dan level sigma kualitas pelayanan, dan memberikan usulan perbaikan sistem pelayanan menggunakan metode integrasi Servqual dan Design for Six Sigma. Hasil dari penelitian yang dilakukan yaitu melakukan fokus perbaikan pada atribut T2 “Kualitas Armada” dengan nilai gap -1,23 dan nilai DPMO 432.000 serta level sigma 1,67; atribut K2 “Ketepatan Waktu Pengiriman” dengan nilai gap -1,00 dan nilai DPMO 400.000 serta level sigma 1,75; atribut T1 “Fasilitas Pengecekan dan Pengukuran” dengan nilai gap -0,91 dan nilai DPMO 338.000 serta level sigma 1,92; dan atribut T4 “Desain Tata Letak” dengan nilai gap -0,91 dan nilai DPMO 338.000 serta level sigma 1,92. Didapatkan beberapa akar permasalahan yang digunakan untuk menentukan strategi usulan perbaikan layanan yang diverifikasi dengan keinginan pelanggan.

Page 43 of 46 | Total Record : 454

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