Journal of Research and Technology

Combination of Gallery Well Reactor And Slow Sand Filtration For Clean Water Reclamation in Flooded Area (Study Case: Morowudi Village, Gresik District)

aulia nur febrianti febrianti — 2024-12-03

In Morowudi Village, Gresik, flooding is a known problem frequently brought on by excessive rainfall and inadequate drainage infrastructure. The ensuing floods make it difficult for the nearby towns to have safe drinking water. Sand Slow filter technology is suggested as a solution to this problem. Establishing parameter levels, lowering parameters, and evaluating the efficiency of different filtration media in lowering turbidity, iron metal, and total coliforms in flooded raw water in the Morowudi, Gresik area are the goals of this study. Using a batch method, the research will be conducted in a laboratory setting after the floodwater has been using the gallery well procedure. The study will concentrate on three different types of filtration media: 70 cm of silica sand media will be used in the first reactor, iron sand filtration media will be used in the second reactor, and beach sand filtration media will be used in the third reactor. Sand media with sizes ranging from 0.25 to 0.5 mm will be used in all reactors, and layers of 5–10 mm and 10–20 mm gravel will be added as supplements in total of 20 cm. The result showed that the efficacy of turbidity reduction can exceed 57.62%. The efficacy of TDS reduction is established at 10.26%, whereas the efficacy of total coliform reduction is established to be over 83%.

The Analysis of SQDC Based on Lean Concepts in the Daily Workwear Production Process at PT. XYZ’s Convection Company

Iffad Rakhmanhuda — 2024-12-02

The garment industry, a cornerstone of Indonesia's economy, faces persistent challenges in efficiency and quality, as evidenced by PT. XYZ's struggles with uneven stitching, loose buttons, and stained fabric in daily workwear production. To address these issues, this study employs Lean Manufacturing principles integrated with the SQCDMPE framework. By utilizing tools like fishbone diagrams and SQCDMPE analysis, root causes of production inefficiencies were pinpointed. Recommendations include implementing stringent quality controls, enhancing worker training, and optimizing operational processes to minimize waste and improve overall efficiency. These strategies aim to streamline production at PT. XYZ, enhancing product quality and meeting customer demands effectively in the competitive global garment market.

Membran Polimer Elektrolit dari Selulosa Asetat Tandan Kosong Kelapa Sawit dan TiO2 dengan Metode Spin Coating untuk Aplikasi Separator Baterai Lithium

Dhea Ismaliyah — 2024-12-02

Separator dalam baterai litium-ion memegang peran krusial dalam mencegah kontak langsung antara elektroda positif dan negatif, yang dapat menyebabkan bahaya kebakaran. Penelitian ini dilakukan dengan mengusulkan penggunaan limbah tandan kosong kelapa sawit (TKKS), sumber alami yang kaya selulosa, untuk menghasilkan selulosa asetat yang diaplikasikan sebagai bahan dasar dalam pembuatan membran polimer elektrolit. Membran ini diintegrasikan ke dalam baterai sebagai pemisah yang berfungsi ganda, tidak hanya sebagai penghalang fisik tetapi juga sebagai media transportasi antara anoda dan katoda. Penelitian ini merupakan eksperimen dengan desain satu faktor yang variabelnya melibatkan kombinasi polivinilidena fluorida (PVDF), selulosa asetat (CA), dan titanium dioksida (TiO₂) dengan komposisi berbeda: PVDF (2.8%:0%), PVDF:CA (2.8%: 12%), dan tiga variasi PVDF:CA:TiO₂ (dengan konsentrasi TiO₂ 0.75%, 0.65%, dan 0.55%). Metode pengumpulan data meliputi uji fisik (porositas, ketebalan, dan voltametri siklik), uji mekanis (kekuatan tarik dan biodegradabilitas), serta pengamatan morfologi menggunakan Scanning Electron Microscopy (SEM, Hitachi TEM 3000 Series). Analisis menunjukkan bahwa membran dengan komposisi PVDF:CA:TiO₂(2.8%:12%:0.75%) memiliki sifat mekanis optimal, kekuatan tarik terbaik 61.8854 MPa dan porositas tertinggi 57%. Penambahan TiO₂dan selulosa asetat tidak hanya meningkatkan kekuatan mekanis dan porositas tetapi juga mempercepat proses biodegradabilitas dengan penurunan berat hingga 68% menjadikannya efektif sebagai separator dalam baterai litium-ion.

Design Product Parameters for Customer Needs on Mineral Water Packaging from The Prespective of A Product Design

Ribangun bamban Jakaria — 2024-12-02

Suli Mineral Water is a bottled drinking water product founded by the Muhammadiyah Regional Leadership Economic and Entrepreneurship Council (MEK-PDM) Tuban, East Java in establishing the Suli 5 Bottled Drinking Water company which is a franchise of PT. Suryatama Cemerlang Abadi (SCA) as Suli's holding company 5. The use of Suli drinking water in all business charities has not yet shown a positive trend. This problem is important to research because drinking water supplies have the potential to grow and develop. This research aims to identify consumer preferences for drinking water packaging product design as a recommendation for marketing and manufacturing policies. The research method used is the traditional conjoint method which is used to measure the utility value and relative importance of each bottled water product design attribute to determine consumer preferences for these attributes. The data collection process in this research was carried out in December 2023 - March 2024. The sample chosen was a non-probability sampling, namely using a judgment sampling technique with a total of 200 respondents. The results of this research are that product parameters consist of product performance, features, reliability, suitability, durability, service capability, quality impression (perception), aesthetics, and product packaging so that using combined analysis provides quantitative information so that modeling of consumer preferences in producing combination of features in the 600 ml suli packaging product design

Analisa Produktivitas dengan Metode POSPAC dan Multi Factor Productivity Measurement Model (MFPMM) (Studi Kasus: Bengkel Mega Teknik, Sidoarjo)

gatot basuki hm — 2024-12-02

Productivity is one aspect that is influential and important in the development process of a company. Bengkel Mega Teknik Sidoarjo is a company that manufactory heaters. This study measured productivity using the POSPAC method and the MultiMulti-Factor Factor Productivity Measurement Model (MFPMM) for 2 periods. The results of the POSPAC method showed that production IP decreased by 0.59%; organizational IP decreased by 0.99%; IP sales decreased by 4.84%; Product IP decreased by 1.57%; Labor IP increased by 3.23%; The capital IP decreased by 0.42%. The calculation results of the MFPMM method show that the company's productivity has decreased by 0.5897% which can make the company experience a profit loss of Rp. 10,134,731.68. Proposed improvements to increase productivity are scheduling shipments, regulating energy use according to production needs, selecting raw materials at a cost that is not too expensive with the same quality, conducting work briefings for workers, checking machines regularly, and carrying out cleaning. workplace routinely and effective machine arrangement.

Kano Method: Development of Multi-Function Walker Product Attributes

Inggit Marodiyah — 2024-12-02

Sensory and motor disorders experienced by a person can reduce the ability to walk. The triggers for these disorders vary, including age factors. Older adults who are at high risk have limitations in their daily activities. Therefore, they must improve their walking ability using rehabilitation aids (walkers). This study aims to design a multi-function walker that can work optimally in older people. The urgency of this study is that the types of walkers on the market are still limited, so they need to be developed into a multifunctional design. The method used in this study is the Kano method. The expected research results are the development of a design for one type of walker with multiple functions, namely functioning as a walking aid (walker) and functioning as a wheelchair, with a comfortable level of seating and can adjust its height.

Pengaruh Ukuran Bahan terhadap Yield pada Proses Ekstraksi Minyak Kayu Putih dengan Metode Microwave Hydrodiffusion and Gravity

Nur Ihda Farikhatin Nisa — 2024-12-02

Tumbuhan kayu putih (Melaleuca leucadendra Linn.) termasuk dalam keluarga Myrtaceae. Minyak kayu putih biasanya dihasilkan dari penyulingan tradisional (konvensional) yang proses ekstraksinya memerlukan waktu dan energi yang cukup banyak. Bukan hanya itu penyulingan secara konvensional memerlukan pelarut kimia yang cukup banyak dengan harga yang mahal. Sehingga pada penelitian ini dilakukan pengembangan dari metode konvensional yaitu metode microwave hydrodiffusion gravity (MHG) yang tidak membutuhkan pelarut. Tujuan dari penelitian ini adalah menetapkan ukuran bahan yang paling optimal pada ekstraksi menggunakan metode MHG. Bahan yang digunakan pada penelitian ini adalah daun kayu putih pada kondisi bahan tanpa pengeringan dan dengan pengeringan. Variabel ukuran daun yang digunakan adalah 1 cm; 1,5 cm; dan 2 cm. Dari hasil penelitian diperoleh bahwa kondisi operasi yang optimal untuk ekstraksi minyak kayu putih menggunakan metode MHG pada bahan kering dengan ukuran 1 cm menghasilkan yield sebesar 2,96%. Pada bahan tanpa pengeringan dengan bentuk daun cacah menghasilkan yield sebesar 1,79%.

Analisis Pengendalian Kualitas Produk Tiang Listrik dengan Metode Seven Tools dan FMEA (Failure Mode Effect Analysis) di PT XY

Mochammad Basjir — 2024-12-02

PT XY, a precast concrete manufacturer, especially for electric poles, faces product quality problems in the form of defects, which harm quality, management, and production costs. This study aims to identify the root causes of defects and provide improvement solutions using the Seven Tools and Failure Mode and Effect Analysis (FMEA) methods. FMEA is used to identify potential and risk of failure and to formulate priority improvement actions. The results of the study showed three main types of defects: porous fins (53.53%), skin sticking (39.56%), and mottled (6.92%). The causal factors include methods, materials, humans, and machines/tools. FMEA analysis produces the highest Risk Priority Number (RPN) for porous fins (192) caused by imprecise molds (machine/tool factors). The recommended solution is to inspect and repair the moulds periodically. Skin sticking defects have an RPN of 210, caused by poor oil quality (material factors); replacing the oil with an oil-based type is the solution. Mottled defects with an RPN of 144 are caused by the low slump of the casting mixture; the solution is to guide the mixing of raw materials according to standards. This study provides specific recommendations to reduce defects in electric pole products at PT XY, focusing on mould improvement, replacement of oil types, and standardization of raw material mixing.

Enhancing Industrial Wastewater Oil Removal Through Integrated Coagulation–Flocculation Pretreatment and Dissolved Air Flotation (DAF)

Yustia Wulandari Mirzayanti — 2024-12-02

Oil content in the water that exceeds the threshold can pollute the environment if disposed of directly without waste treatment. This study conducted a case study of engineering waste treatment containing 1% oil using the Dissolve Air Flotation (DAF) method through coagulant and flocculant pre-treatment. The independent variable used in this study is pressure and residence time, where the pressure variable consists of 0.6, 0.8, 1, 1.2, and 1.4 bar, while the residence time variables comprised 5, 15, 30, 45, and 60 minutes. This study obtained the maximum pressure and residence time, namely at a pressure of 1.4 bar and a residence time of 60 minutes; the highest oil removal was 98.32%. Turbidity removal was 92.31% in 1% of engineering waste for engineering destruction.

Analysis of Health Protocol Implementation Through UTAUT (Unified Theory of Acceptance and Use of Technology) Model in Trenggalek DistrictMODEL IN TRENGGALEK DISTRICT

Reni Daniati — 2024-12-02

The COVID-19 pandemic has introduced significant behavioral changes driven by adopting health protocols known as the 5M measures—mask-wearing, handwashing, maintaining physical distance, limiting mobility, and avoiding crowds. This study evaluates the implementation of the 5M health protocols in Trenggalek and Bendungan Districts, representing urban and rural areas, respectively. Utilizing the Unified Theory of Acceptance and Use of Technology (UTAUT) model, modified with Clean and Healthy Behavior (PHBS) constructs, this research examines community awareness and adherence to 5M protocols. A survey involving 758 respondents from both districts was conducted during the pandemic to assess factors influencing compliance. The findings highlight that social influence through counseling, advertisements, and posters plays a pivotal role in shaping behavioral intentions related to protocol adherence. Furthermore, these intentions directly influence actual behavior, reinforcing sustained compliance with the 5M measures. Notably, urban and rural contexts demonstrated similar patterns, underscoring the universal impact of social influence regardless of geographic setting. This study concludes that strengthening community engagement and targeted social campaigns can enhance public health resilience and preparedness for future pandemics by fostering sustainable health-conscious behavior.

Identification of Workplace Accidents at PT XYZ In Sidoarjo Using The Job Safety Analysis (JSA) Method

Luqman Hakim — 2024-12-02

The rapid development of technology in Indonesia significantly impacts various aspects of life, including the industrial sector. One of the negative impacts on this sector is the occurrence of work accidents that cause injury and death. This is due to the low implementation of Occupational Health and Safety (K3) culture in the industrial world. PT XYZ, a company engaged in the hot rolling coil industry in Sidoarjo, implements a K3 system. However, based on initial observations, there are still obstacles, especially the lack of understanding of human resources regarding Standard Operating Procedures (SOP). This study aims to identify the factors causing work accidents and outline corrective steps to reduce the risk. Using the Job Safety Analysis (JSA) method, this study found that in 2022, there were 43 cases of work accidents, while in 2023, the number decreased to 41 cases. As a result of these accidents, in 2022, there was a loss of 21 working days per 1,000,000 working hours/person, while in 2023, the loss of working days decreased to 18 days for the same period. The accident indicator also showed a decline, from 0.47 in 2022 to 0.38 in 2023. Recommendations to prevent work accidents at PT XYZ include reading the safety board, attending briefings before work, doing work according to the job description, and using personal protective equipment such as safety shoes and work helmets.