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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.
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Articles 12 Documents
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Search results for , issue "Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021" : 12 Documents clear
Kemampuan Adsorben dari Limbah Serbuk Gergaji Kayu Jati terhadap Penurunan Kandungan Timbal (Pb) pada Limbah Cair dengan menggunakan Sistem Batch Rafli Puji Firmanto; Rr. Diah Nugrahaeni Setyowati; Dedy Suprayogi
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

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Abstract

Teakwood sawdust is a by product of the sawmilling process used by industry and wood enterprises. One way to put the garbage to good use is to use it as a raw material for creating adsorbents for adsorbing heavy metals in waste water. The goal of this study is to use a batch system to investigate the ability of teakwood sawdust to adsorb lead (Pb) in liquid waste and to establish the optimal adsorption isotherm modeling in the adsorption process for the processing of lead (Pb) heavy metal waste. This is an experimental study that uses a variety of adsorbent masses, including 1 gram, 2 gram, 3 gram, 4 gram, and 5 gram, as well as a variety of adsorbent activation methods.According to the study's findings, variations in the mass of adsorbent used 4 gram resulted in average absorption of 81.14 percent and 94.15 percent, respectively, while variations in the adsorbent activation method with the activation process and variations in the adsorbent activation method without the activation process resulted in an average absorption of 81.14 % and 94.15 %. respectively, while the average value of the adsorption capacity in The adsorption model isotherm langmuir with R2 value of 0,6537 is suitable for the adsorption process employing teakwood sawdust adsorbent.  
Pengolahan Limbah Cair Industri Elektroplating dengan Proses Flotasi Menggunakan Methyl Ester Sulfonate (MES) sebagai Collector Laurentius Urip Widodo; Sholekhah, Bika Amalia; Hubbi Hikmatu Ilma
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

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Abstract

Industrial waste is a major problem for countries that are developing large industries such as Indonesia. Industrial waste with heavy metal content such as electroplating waste cannot be disposed of directly into the water because it can cause environmental pollution. Therefore, further processing is needed to reduce or eliminate metal levels in the waste water. In this study, the method used to reduce Cu metal content in electroplating waste is using the flotation method. Flotation is the process of separating minerals or ions through flotation with the help of air bubbles to the surface of the water. The parameters observed in this study were the effect of pH and collector on % Cu removal. Experiments were carried out with waste water feed containing Cu metal with an initial concentration of 107.6 mg/L, with a variation of pH 4,5,6,7,8 and a variation of the concentration of 200 mg/L, 300 mg/L, 400 mg/L, 500 mg/L and 600 mg/L of collector. After being analysed using Atomic Absorption Spectrophotometer (AAS), the best% Cu removal at pH 6 conditions and 300 mg/L methyl ester sulfonate (MES) concentration was 67.19%.
Ceramic Industry Wastewater Treatment by Chemical Coagulation Process Pujiastuti, Caecilia; Egita Yulisningtyas; Ira Pareira
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

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Ceramic industrial waste contains organic compounds and several heavy metals that exceed the quality standards of ceramic industrial wastewater, therefore the wastewater is treated using the coagulation method. This study uses a coagulant Poly Aluminium Chloride (PAC) with the aim to determine the effect of coagulant mass and stirring time on reducing the content of COD, TSS, lead metal (Pb), and colour. Starting with the waste mixed with PAC has been diluted with a concentration of 1%. Then stirred using a flocculator with a speed of 100 rpm and time (2, 4, 6, 8, and 10 minutes) to form floc. Then it is deposited and separated between the filtrate and the solids. Then the filtrate was analysed. With this analysis, it can be seen that the highest reduction efficiency of TSS levels was 99.9% with a coagulant volume of 12.5 ml at 6 minutes. The highest efficiency of COD levels was obtained at 98.23% with a coagulant volume of 15 ml at 6 minutes. The highest efficiency of waste colour reduction was 99.85% with a coagulant volume of 15 ml at 10 minutes and the efficiency of reducing Pb levels was 99.10% with a coagulant volume of 5ml at 2 minutes, all of which were below the quality standard ceramic industry.  
Optimization of Esterification and Transesterification Processes for Biodiesel Production from Used Cooking Oil M. Hasan Abdullah; Wahyu Riyanto, Ong Andre; IBSW, Dyah Puspita
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

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Various treatments were carried out to produce biodiesel optimally. This research was conducted to process used cooking oil (UCO) into biodiesel. UCO with high FFA has saponification in the transesterification reaction. Transesterification experiment UCO with % FFA 4.261 and acid number 8.42 mg-KOH/g produced saponification. This experiment was carried out at different temperatures, speeds, and times. It is necessary to carry out initial esterification treatment. Simultaneously the biodiesel synthesis process is carried out by esterification and transesterification processes. The esterification process with 3%wt H2SO4 catalyst, 1:6 molar ratio of oil and alcohol with temperature treatment of 50 °C, speed of 300 rpm for 60 minutes can reduce % FFA in UCO to 2.115 and acid number 4.208 mg-KOH/g. The transesterification process using a NaOH catalyst of 0.5% wt, the molar ratio of oil and alcohol 1:6 with a temperature treatment of 60°C, a speed of 400 rpm for 60 minutes, can produce biodiesel with an acid number of 0.28 mg-KOH/g and 0.141 of % FFA according to SNI 7182-2015 standard. These results after purification on biodiesel.  
Optimization of Ultrasound-Assisted Extraction Parameters from Indigofera Tinctoria L using Response Surface Methodology Achmad Qodim Syafaatullah; Variyana, Yeni; Ni’matur Rohmah; Iid Mufaidah; Ayu Qurota A’yun
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

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Abstract

Nowadays, the natural dyes are commonly used in textile industry. One of them is Indigofera tinctoria L leaves extracting natural dyes that produce blue color and have various potential utilization. However, the extraction time required usually takes a long time using conventional extraction. Thus, some researches reported that ultrasound-assisted extraction can accelerate and increase the extraction yield. The mechanism of ultrasonography is able to assist matrix cell rupture through the ultrasound cavitation. The present research aimed to study and to evaluate the Indigofera tinctoria L dye using ultrasound-assisted extraction. Response surface methodology (RSM) in conjunction with box-behnken design (BBD) was applied to optimize and to analyze the extraction conditions. The independent factors were ratio feed to solvent (0.02-0.1 g/ml), ultrasound temperature (50-60oC), and extraction time (50-90 minutes). Further, feed to solvent ratio was the most significant factor of extraction process in comparison with temperature and extraction time. The optimum extraction conditions were 58oC, 0.02 g/ml, and 50 minutes. The predicted model obtained was 6.025% which close to the actual data (5.75%). Moreover, the extract dye compounds were analyzed by FTIR test and the result was 64.07% for presence of Indigo dye. Therefore, the natural dyes can be alternative and sustainable dye as environmentally friendly
Analisis Pelaksanaan Pembangunan TPA Kabupaten Banyumas Akibat Kelongsoran dan Perubahan Desain Perencanaan Agus Bambang Siswanto; Mukhamad Afif Salim; Hari Setijo Pudjihardjo; Novike Dian Utami
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

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Abstract

Project is something with constrains can affect the time or duration of the work, slope slides and building redesigns that have an impact on delays in project implementation. Delays that occur can result in the presence of less work and work items that cause work to experience delays and increase the total cost of implementing the project or it can be said that the project suffers a loss. In this case, good time and coast management needs, can be solved properly. This challenge of a project is main to achieve the goals project within the constraints which generally the scope, schedule and budget of the project. Many methods used in scheduling, for expected scheduling planning. This research to get a logical schedule by rescheduling in accordance that it is hoped no more delays. Analytic research need of data such as schedules and budgeting directly the required data to the relevant parts, evaluating the schedule, followed by a new schedules with Microsoft Excel, and finally perform cost calculations with a balanced budget system. The result of this research the rescheduling is 440 days with the total RAB after rescheduling is Rp. 41,286,988,000,-, equal to the total cost before rescheduling, because of the work added and less and carried out a balanced budget.
Penerapan Metode Quality Function Deployment dan Antropometri dalam Perancangan Desain Mesin Cacah Sampah Organik dan Non Organik Navik Kholili; Astria Hindratmo; Alfi Nugroho
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

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The Garbage is residual material that has been disposed of and is no longer used, so that waste is considered something disgusting by some people. Garbage has two types, namely organic waste and inorganic waste. Therefore, good waste management is needed so that every day waste does not accumulate and does not disturb the surrounding environment. The purpose of this research is to design a garbage chopper that is useful for chopping organic and inorganic waste to help the waste processing process so that there is no buildup every day. The design of this chopping machine is made multi-functional that can chop organic or inorganic types of waste, designed according to the wishes of consumers or users and made ergonomically. The method used in this research is the Quality Function Deployment (QFD) method and the user's body Anthropometry so that the dimensions of the machine are in accordance with the user which causes the design to be ergonomic. The results of the research are to produce a design of organic and inorganic waste chopping machines that have specifications such as machines using mild steel so that they are easy to move, durable, speed up the chopping process because there is a speed setting, automatic. In addition, the machine has ergonomic dimensions from the results of the machine user's body measurements using the anthropometric method.
Implementasi Lean Warehousing untuk Meningkatkan KPI di PT. TXL Taqwanur
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

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PT. TXL is a company engaged in the warehouse sector by distributing its products to the East of Indonesia area. The smooth and reliable operation of a warehouse is strongly influenced by its effective, efficient and reliable activities with continually improvement. One of the challenges for the warehouse role is to shorten the process time required by accelerating working time, increasing efficiency, and increasing work effectiveness. Performance of PT. TXL is measured using Key Performance Indicators (KPI) are productivity and the number of complaints, so the total process time can be improved. The total process time the initial condition is 7 hours 3 minutes with the stages of the process including Sales Orders, Picking, Sorting, Packing, Dispatching and Delivery. By using the Lean Warehousing method, Value Adding Activity (VAA), Necessary but Non-Value Adding Activity (NBNVAA) and Non-Value Adding Activity (NVAA) can be identified through questionnaires and brainstorming by senior employees and leaders. The focus of improvement is to reduce waste in extra processing, motion, overproduction and waiting. After improvement were done, the total process time decreased to 3 hours 48 minutes with Non-Value Adding Activity time decreased from 3 hours 17 minutes to 37 minutes. This has another impact on increasing KPI are productivity increasing by around 45% and the number of complaints per mount decreasing at the end of October 2021 to 2 complaints.
Metodologi DMAIC untuk Meminimumkan Penolakan Produk Tahu Kuning oleh Agen Distributor Indrasari, Lolyka Dewi; Ana Komari; Afiff Yudha Tripariyanto; Krishna Tri Sanjaya; Saufik Lutfianto
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

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This research aims to 1) find out the cause of yellow tofu quality rejection by distributor agents in the supply chain, 2) know the comparison of rejection by the distributor agent pre-implementation and post-implementation of DMAIC methodology, 3) know the decrease in rejection by distributor agents in the supply chain. Research methods use the DMAIC methodology. The DMAIC method as the basis for determining the percentage value decreased rejection of yellow tofu products carried out by the distributor agent. The implementation of this research as an effort to provide the value of minimization of the type of rejection that occurs. This research resulted in 1) the cause of yellow tofu quality rejection by distributor agents in the supply chain is the presence of faded, watery, easily destroyed, bantat, torn 10%, torn 25%, smells sour and less chewy, 2) the comparison of rejection by the distributor agent pre-implementation and post-implementation of DMAIC methodology is 34% compared to 18%, 3) decreased rejection by distributor agents in the supply chain post DMAIC methodology by 16%. The three conclusions of this study are in accordance with the goals achieved. Consistent application of DMAIC methodology may provide more significant declines. The implications of this study compare the pre and post DMAIC methodology in the first, second, and third.
Perancangan Ulang Tata Letak Fasilitas Produksi dengan Metode Systematic Layout Planning dan BLOCPLAN untuk Meminimasi Biaya Material Handling pada UD. Sofi Garmen Ulfiyatul Kholifah; Suhartini
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
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The competitions among industries will get increasing and grow rapidly along with the advan/cement of technology. The layout of company facilities must be considered well as it holds a vital role in determining the quality of production process. Sofi Garmen Firm has encountered a problem of far distance in material handling among departments that finally triggered disturbance of production activity and huge cost of material handling. Therefore, a design for relayouting production facilities became the research object. It aimed at designing the layout proposal through Systematic Layout Planning and Blocplan methods. To calculate the distance, the researcher employed Rectilinear and Euclidean. The result of both distance calculations in Systematic Layout Planning obtained 29,678.5 meters and 23,375 meters respectively, whereas the cost of material handling gained averagely IDR 1,129,356.5. Meanwhile, the results of distance calculations of Rectilinear and Euclidean in Blocplan earned 30,920 meters and 26,942.5 meters consecutively and the cost of material handling produced averagely IDR 1,237,564.5. Accordingly, the calculation results indicated that the recommendation yielded by Systematic Layout Planning became the most optimum alternative of layout.

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