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Journal of Sustainable Technology and Applied Science
Published by Institut Teknologi Nasional Malang
ISSN : -     EISSN : 27222403     DOI : https://doi.org/10.36040/jstas.v1i2
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering
JSTAS (Journal of Sustainable Technology and Applied Science) is the online journal under the Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) ITN Malang. JSTAS ready to publish research articles, a review from the researchers associated with the field of sustainable technology, engineering, and applied science. The journal aims to integrate the study of these disciplines to achieve sustainable development (SD) and help to stimulate debate with a view to defining common, effective responses to tomorrow’s challenges.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 57 Documents
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ESTIMATING GEOELECTRIC FOR THE CLEAN WATER NECESSITY PREDICTION (CASE STUDY: ABDUL RACHMAN SALEH AIRPORT MALANG) Hirijanto, Hirijanto; Yuwono, Endro; Maaruf, Annur
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 3 No. 1 (2022): Journal of Sustainable Technology and Applied Science, May 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v3i1.4771

Abstract

Abdul Rachman Saleh Airport of Malang plays a significant role for the air transportation in Malang and its surrounding. The services provided in Malang Abdul Rachman Saleh airport are expected to be the alternative solution to the high number of prospective passangers in Juanda Airport. However, it gives an impact in the sense of the high public interest of utilizing Abdul Rachman Saleh Airport in Malang. Increasing airport service activities requires the fulfillment of supporting facilities and infrastructure, including raw water supply. Upon critical condition such as a sudden damage, it only relies on the PDAM Malang regency water suppy and in the long run, it is prone to face water shortages. Therefore, it is required to have a pure water supply with raw water need analysis, raw water necessity estimation, and also the exploration for potential water resources that can be used as clean water supply provider at Abdul Rachman Saleh airport. The geoelectric method was used to explore the potential groundwater supply through a layer feature beneath the surface and the possibility of groundwater and minerals at a certain depth. Investigations related to topographic, physiographic, geomorphological, geological and hydrogeological conditions were carried out to analyze the potential for underground water around the Abdul Rachman Saleh airport area. Several location points were surveyed and measured to determine estimates of the availability of groundwater that were detected. The results of the analysis show that there is potential for groundwater availability at three locations around the airport area which can be used as raw water reserves to meet the needs of clean water supply which is predicted to reach 0.9 liters / second in 2036. As a raw water reserve, the need for clean water for Abdul Rachman Saleh airport Malang services is predicted to be fulfilled.
MAKING HIGHT ANTIOXIDANT MIX FRUIT POWDER WITH COMPOSITION VARIATIONS FRUIT AND DRYING TEMPERATURE Minah, Faidliyah Nilna; Anitarakhmi; Pricilia, Anastasia; Amalia; Laurita; Rovita; Mufidah, Azmi; Angela; Dinda
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 3 No. 1 (2022): Journal of Sustainable Technology and Applied Science, May 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v3i1.4158

Abstract

Making a drink mix fruit from the fruit of the banana ambon, california papaya, pumpkin and Solanum betaceum can be a way to enhance antioxidant content of their products, and will raise the value of fondness of the community towards it. This study aims to determine the right formula of the variation of composition fruit and temperature levels drying against anti oxidant and know received the community in power fruit drink mix. Methods used to making a drink mix fruit that is a method in which a Foam Mat Drying. Based on an analysis of the vitamin C the best conditions exist to variation composition fruit 50% of Solanum betaceum. While for antioxidant content IC50 the best conditions exist to variation composition fruit 50% of banana ambon at a temperature of 50 oC. The temperature drying affecting the womb IC50 antioxidant vitamin C and fruit resulting mix to the liqueurs. Based on the is the hedonic organoleptic, can was received by the fruit drink mix for its shade from variations composition 50% of pumpkin (50 oC), the scent of 50% of pumpkin (70 oC), and the sense of 25% respectively fruit (50 oC). So it can be concluded that variations composition fruit that is produced with composition of the 50% of pumpkin.
UTILIZATION OF SOLAR ENERGY AS AN ALTERNATIVE ENERGY SOURCE IN THE HYDROGEN (H2) PRODUCTION PROCESS IN HYDROFILL Romadhon, Bima; Saleh, Choirul; Setiawan, Rachmadi; Megawati, Citra Dewi
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 3 No. 1 (2022): Journal of Sustainable Technology and Applied Science, May 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v3i1.3553

Abstract

ABSTRACT: Due to the industrial revolution, global demand for oil rose as did hydrogen. Given the population explosion, energy demand is rising to a very large level and this results in excessive exploitation of natural resources and greenhouse gas deposits. But since the 2015 Paris Agreement, the attention of international bodies and climate movements has made drastic policy toward the use of renewable energy, with the gradual elimination of fossil fuels. One of the key challenges to reducing greenhouse gas emissions and addressing the growing global energy demand is with environmentally friendly and sustainable energy solutions. Hydrogen is recognized as a potential fuel because it offers a carbon-free solution, a high caloric value compared to fossil fuels. Hydrogen can be produced from a wide variety of domestic resources. Currently, most hydrogen is produced using Steam Methane Reforming (SMR) and Carbon Capture and Storage (CCS) natural gas or coal gasification is the cheapest way in terms of cost compared to using electrochemistry and renewable biomass as the main ingredients of hydrogen production. Electrolysis methods were applied in this study to produce hydrogen fuel. The purpose of this test was to compare the effectivity of electrolysis system production in room temperature conditions (VH2real) and ideal conditions (VH2ideal) with energy consumption (Vcell) per liter of H2. From the tests that have been conducted, it can be concluded that the ideal condition of an electrolysis system is difficult to achieve in room temperature conditions, the results showed in ideal conditions, the expected hydrogen volume of 18.23 liters was obtained with a power consumption of 6,390 Watts / Liter, but in the room conditions the average test results showed that the average power consumption consumed was 6,633 Watts / Liter.
UTILIZATION OF VEGETABLE WASTE AS AN ENVIRONMENTALLY FRIENDLY NATURAL DECOMPOSER Hudha, Istnaeny Mohammad; Rini Kartika D; Galih Purwa S; Yohanes, Riardus
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 3 No. 1 (2022): Journal of Sustainable Technology and Applied Science, May 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v3i1.3695

Abstract

Natural decomposers are a collection of various kinds of decomposing microorganisms in nature that can be used as bioactivators. Natural decomposers are often referred to as Natural Microorganisms (MOL). One of the materials that can be used as a source of microbes in decomposers is vegetable waste because vegetable waste is a good medium for the proliferation of decomposing microorganisms. Apart from being a source of organic matter, rotten vegetables can be a source of bacteria as a decomposer. The manufacturing process also requires carbohydrates in rice washing water and glucose in sugar which acts as a source of energy or nutrition for microorganisms. This study aims to determine the types of microbes contained in the vegetable waste decomposer and to obtain the correct composition of washing water for rice and sugar for the highest number of microbes in the MOL decomposer. The research was conducted with anaerobic fermentation process for 14 days. From the research results it can be concluded that a. The types of microbes contained in local microorganisms of vegetable waste are Bacillus Subtillus, Bacillus Cereus, Lactobacillus Acidophilus, Spirillum, Streptoverticillium, and Leuconostoc Mesenterousdes b. The composition of washing rice water and sugar is right for the results of the highest number of microbes in sample C1, namely 91 x 105 Colonies / 100 mL in MOL of vegetable waste is 650 mL of rice washing water and 100 grams of granulated sugar.
THE EFFECT OF FILLER CONCENTRATION VARIATIONS AND DRYING TEMPERATURE ON JUWET (SYZYGIUM CUMINI) POWDER INSTANT DRINK Nilna Minah, Faidliyah; Setyawati, Harimbi; Junita, Erni; Muyassaroh
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 3 No. 2 (2022): Journal of Sustainable Technology and Applied Science, November 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v3i2.4338

Abstract

Juwet fruit has a sour taste. The purple color of this ripe juwet comes from anthocyanins. Anthocyanins in fruit or vegetables can appear as red, purple, or blue, depending on the acidity (pH) conditions. Anthocyanins also act as a source of antioxidants. Antioxidants from anthocyanins are relatively safer than synthetic antioxidants that allow the promotion of carcinogenesis. Antioxidants will stimulate the body's system response to destroy free radicals. The magnitude of the benefits of antioxidants has encouraged many researchers to lift the natural potential with high antioxidant content to be processed into practical and easy dishes. Therefore, Juwet fruit processing is needed to increase public acceptance of Juwet fruit, one of which is by removing tannins from Juwet fruit by blanching and processing juwet fruit into instant powder that is practical and easy to consume. Both in the process of evaporation and drying. The purpose of this research is to increase the economic value of Juwet fruit as an instant powder drink which is rich in vitamins and high in antioxidants. Optimization of the process is carried out by combining the evaporation and drying processes to obtain products that comply with SNI standards. From the results of this study, the highest Vitamin C content was obtained at a drying temperature of 500C, which was 0.128%/1 g with an antioxidant reactivity of 50%.
RECOMMENDATIONS FOR IMPROVEMENT AND CONTROL MECHANISMS IN THE PRODUCTION PROCESS OF NOXONE 297 SL 1 LITER WITH FMEA APPROACH Setio, Hadi Rachmad; Julianus Hutabarat; Dimas Indra Laksmana
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 3 No. 2 (2022): Journal of Sustainable Technology and Applied Science, November 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v3i2.3873

Abstract

Product packaging is one of the critical factors in a product. The main problem with product packaging is the frequent occurrence of defects that exceed the company's targets and cause consumer disappointment. The purpose of this research is to minimise the occurrence of defects in product packaging so that recommendations for improvement and performance control mechanisms are needed. Improvement recommendations are made based on analysing the failure mode using the Pareto chart and FMEA (failure mode and effect analysis) tools. The results of this study are in the form of SOP recommendations for improvement and control mechanisms for 3 product packaging.
STIR CASTING METHOD ON ALUMINA (Al2O3) COMPOSITE MATRIX WITH SiC STRENGTHEN AND MAGNESIUM (Mg) ADDITION TO MICROSTRUCTURE AND MECHANICAL PROPERTIES Widodo, Basuki; Wahyu Panji Asmoro; Amirullah Firmansyah
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 3 No. 2 (2022): Journal of Sustainable Technology and Applied Science, November 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v3i2.4160

Abstract

Aluminum is a material that has the ability as a material that is widely used because of its light weight, good corrosion resistance, good appearance, reliable electrical conductor, good electricity conductor, and several other advantages of this material. The development of aluminum (Al) material in the form of aluminum matrix composite (AMC) is often applied in various fields including automotive, industry, military, and aviation. The reinforcing particle that is often used in AMC is silicon sarbide (SiC) to improve the properties of AMC. The addition of magnesium (Mg) is useful as a wetting agent for reinforcing particles and matrices. This study aims to determine the effect of adding magnesium (Mg) on the mechanical properties and microstructure of the aluminum matrix composite 1100 series reinforced with silicon carbide (SiC) using the stir casting method. The reinforcing silicon carbide (SiC) particles were added to the aluminum matrix composite (Al) by 5%. The variations in the addition of magnesium were 0.75%, 1.25%, and 1.75% as wetting agents. To find out the mechanical properties, this research was carried out by testing the tensile strength and hardness. The hardness test results showed the highest hardness in the magnesium (Mg) 1.75% variation of 84.67 HRB and the highest tensile strength in the pure aluminum (Al) variation of 9.41 Kgf/mm2.
RISK ANALYSIS ON MSME TATTI CROCHET USING HOUSE OF RISK Ramadhani, Anisa Ramadhani; Achmadi, Fuad; Laksmana, Dimas Indra
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 3 No. 2 (2022): Journal of Sustainable Technology and Applied Science, November 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v3i2.4525

Abstract

Tatti Crochet is an MSME (Micro, Small, and Medium Enterprise) in Malang City engaged in the handicraft industry. The handicrafts produced are knitted goods, with a specialisation in knitting bags. As an MSME producing handicrafts, Tatti Crochet faces problems in human resources, especially knitters. The number of knitters currently available is three people, and this number cannot support the production needs of Tatti Crochet. This is one of the risks that must be faced not only by MSMEs but also by other organisations and companies. Risk management can be carried out by risk identification, evaluation and measurement, and risk management. One method that can be used to manage risk is the House of Risk. From the risk identification process, Tatti Crochet faced 22 risk events triggered by 29 agents. Based on the calculation of HOR Phase 1, 10 risk agents will enter HOR Phase 2 for determining preventive action, namely A11, A10, A18, A13, A14, A3, A12, A5, A28, and A4. Finally, one preventative measure was soon done with the highest ETD number, PA1, with ETD 1620.
EFFECT OF (CH2)N ON CHARACTERISTICS ORGANIC THE WASTE PELLET FUEL Pudji Muljanto, Widodo; Mustiadi , Lalu; Ardi Widodo , Kartiko
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 4 No. 1 (2023): Journal of Sustainable Technology and Applied Science, May 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v4i1.5571

Abstract

The effect of (CH2)n on the combustion characteristics of organic waste pellet fuel has been studied visually and experimentally at atmospheric pressure and temperature in the experimental room. Organic waste particles contain (C, O, Mg, Al, Si, Ca) and plastic bottle oil formed as polyethene (CH2)n. Based on the percentage mass ratio (1, 5, or 10 %), pellet fuel is made from polyethene and organic waste charcoal particles. The burning characteristics of the pellets were identified from the time and temperature signals of the flame by ignition of a shot under the junction of the thermocouple. The faster love starting time and increasing rate of pellet burning were indicators of the results, which demonstrated that the larger the mass of the mixture, the more significant the effect on the pellet burning process. The catalyst in organic waste charcoal binds hydrogen from (CH2)n, forming a weak molecular structure (CH2)n with a low density so that it quickly evaporates and burns. As the mass of the mixture increases, the moles of carbon in the pellets increase. So, the more critical the mass ratio of the mix, the more important the energy absorption property becomes. This creates a stoichiometric reaction equilibrium by making the combustion energy release rate go up. The increasing mass of the mixture helps generate more incredible activation energy in burning organic waste charcoal pellets, confirmed by the more excellent absorption of infrared %T energy.
OPTIMISATION OF THE MIXTURE OF ACTIVATED CHARCOAL AND RED GINGER EXTRACT WITH THE ADDITION OF SANSEVIERIA TO THE FOOD CABINET FILTER Astuti, Siswi; F. Endah Kusuma Rastini; Ester Priskasari; Djoko Hari Praswanto
Journal of Sustainable Technology and Applied Science (JSTAS) Vol. 4 No. 1 (2023): Journal of Sustainable Technology and Applied Science, May 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Nasional (ITN) Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jstas.v4i1.5805

Abstract

Spoiled or unhealthy food is the causative agent of a disease called ptomaine poisoning. This disease can come from consuming water, milk, other drinks, or food in raw or cooked form provided in a place that contains agents that can produce disease in sufficient quantities—an amount needed to cause various diseases. Various agents that can cause disease in food are plants, bacteria, chemicals, animals, agents that use food as a means of transferring themselves, radionuclides, and microbes. Food damage caused by microbes is usually due to the condition of the food, which has a high water content, improper storage of food, or types of food that are not durable. Microbes that cause harm can come from slime molds, yeasts, bacteria and viruses in a variety of ways. Can come from polluted air, cross-contamination from food storage areas. The purpose of this research is to make an air filter in a food storage cupboard that has the optimum ability to inhibit the growth of pathogenic microbes so that the stored food is not easily damaged. The method of implementation in this study was to make a filter mixture composition consisting of activated charcoal from bamboo ori, sanseviera, and red ginger extract, where the material has anti-bacterial and antiviral benefits. The filter composition to be tested is a mixture of activated charcoal, sanseviera, and ginger extract. red in the ratio: 3:1:4; 4:1:4; 4:1:3; 2:2:4; 4:2:4; 4:2:2, samples containing protein. The best results that can inhibit the growth of Bacillus substillis are obtained in filters with a composition of 4:2:4.

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