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Aster Rahayu
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ijce@che.uad.ac.id
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Campus IV, Jl. Ringroad Selatan, Kragilan, Tamanan, Kec. Banguntapan, Bantul, Daerah Istimewa Yogyakarta 55191.
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Kota yogyakarta,
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INDONESIA
Indonesian Journal of Chemical Engineering
Published by Universitas Ahmad Dahlan
ISSN : -     EISSN : 30256674     DOI : https://doi.org/10.26555/ijce
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Materials Science & Nanotechnology
Indonesian Journal of Chemical Engineering aims to provide an international platform for scientists, researchers, and academicians to promote, share and discuss new findings, current issues, and developments in the different areas of Chemical Engineering. This journal encourages a forum for publishing research related to the Sciences, Energy, Environmental and Food Pharmaceutical fields. This journal encompasses Original Research Articles, Review Articles, and Short Communications, including Fundamental and applied chemical reaction engineering, Materials engineering, Catalyst, Environmental chemical engineering, Sustainable science and engineering, Food, Drugs and Cosmetics, Renewable energy (Biomass and Hydropower) and Non-Renewable energy (petroleum, natural gas and coal).
Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)
Articles 6 Documents
 1 
Innovation and Business Feasibility Analysis of Banana Flavored Spinach Chlorophyll Functional Drink “Dally” Adi Permadi
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023): Indonesian Journal of Chemical Engineering
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v1i1.451

Abstract

Indonesia is rich in food sources with bioactive components that have the potential to be developed. Both market research and academic research have shown an increase in consumer awareness and interest in health and nutrition. The prospect of functional drinks one of them can be said to be very promising and profitable. Dally, a functional drink containing spinach essence and banana peel fiber has valuable nutrients such as chlorophyll content (0.2094%), calcium (0.0159%), vitamin C (5,9705 mg/100g), total sugar (1.7334%), and antioxidant IC50 (4077,156 ppm). This drink has a pH of 4.19 and a water activity of 0.955. Based on organoleptic tests on 23 students, it was found that 100% of respondents (liked the taste of Dally, and 65.2% liked the colour and 39% liked the aroma. Market research shows a very high trend for the Yogyakarta and Central Java regions. A SWOT analysis shows Dally has a good chance of being marketed. Meanwhile, Dally's marketing and promotion is carried out through marketplaces such as Shopee, Tokopedia, Facebook and Instagram. Marketing is also carried out with personal selling techniques by visiting potential buyers who are engaged in selling functional drinks. From the calculation, it is known that the cost of goods sold is 7,500 rupiah with a profit margin set of 125%.
Combustion Quality Analysis of Bio-Briquettes from Mixture of Coconut Shell Waste and Coal with Tapioca Flour Adhesive Dhias Cahya Hakika; Siti Jamilatun; Shafa Zahira; Riska Setyarini; Aster Rahayu; Remmo Sri Ardiansyah
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023): Indonesian Journal of Chemical Engineering
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v1i1.452

Abstract

Agroindustry residues can be utilized as a resource for alternative energy sources such as bio-briquettes. Using agro-industry residue is also a solution to reduce pollution caused by biomass waste in the environment. This article highlights the combustion quality analysis of biomass waste in the form of bio-briquettes with binding materials prepared from tapioca flour. The biomass used is a mixture of coconut shell charcoal and coal to improve the quality of the bio-briquettes. In this study, bio-briquettes were manufactured using a screw press system. The combustion quality of bio-briquettes with various percentage compositions (0:100, 25:75, 50:50, 75:25, 100:0) of coconut shell charcoal and coal was investigated, i.e., moisture content, ash content, combustion rate, and calorific value. Results show that the calorific value of most bio-briquettes produced in this study was higher than the standard calorific value according to  SNI Standard No.1/6235/2000 (≥ 5,000 cal/gr). The optimum composition to produce bio-briquette with good quality based on the standard is 75:25 (coconut shell charcoal: coal), which had a moisture content of 7.6325%, ash content of 6.9697%, combustion rate of 0.1833 gr/min, and caloric value of 5833.78 cal/gr.
Mechanical Characteristics of Epoxy Composite With Rice Husk Charcoal Filling Material Maryudi Maryudi; Farrah Fadhillah Hanum; Oktaza Loundi Vidinda; Arif Dwi Anto
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023): Indonesian Journal of Chemical Engineering
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v1i1.457

Abstract

Advancements in science and innovation in the modern world have led to a growing demand for materials in the production of goods. The utilization of materials in the manufacturing process has been reduced. This is due to the heaviness, costliness, susceptibility to corrosion, and complex assembly systems of metal materials compared to natural fibers. One of the materials currently under development is composites. Composites are a mixture of at least two materials that vary in shape, chemical structure, and are non-disintegrating. The aim of this study is to explore the fabrication and influence of rice husk volume fraction in epoxy composites, as well as to test their tensile strength and composite characteristics. The methodology involves preparing the raw materials (rice husk charcoal, epoxy resin, epoxy hardener, and silicon spray), rice husk charcoal preparation, epoxy production from resin and epoxy hardener, and composite manufacturing with volume fractions of 10%, 20%, and 30% following ASTM D-638 standards. The testing of composite characteristics through tensile tests yields varying tensile strengths. The highest tensile strength is found in composites with a volume fraction of 10%, while the lowest tensile strength is found in composites with a volume fraction of 30%.
Review: Biochar from Co-Pyrolysis of Biomass and Plastic Siti Jamilatun; Zulia Arifah; Erna Astuti; Rahayu Aster; Remmo Sri Ardiansyah
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023): Indonesian Journal of Chemical Engineering
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v1i1.458

Abstract

Plastic and biomass waste disposal will increase if it is not accompanied by appropriate, efficient, and effective waste treatment. Recent research on the yield of charcoal produced by co-pyrolysis has shown that the product of co-pyrolysis of plastic and biomass raw materials is a beneficial additive with a variety of applications, ranging from soil and water improvement, increasing agricultural yields, fuel cells, supercapacitors, as a support/ catalysts, sustainable chemistry, and carbon sequestration. Therefore researchers need to ensure the quality of the results of co-pyrolysis in the form of biochar obtained from any raw material and process to provide maximum benefits, mainly from biomass and plastic raw materials. This study aims to review the formation of biochar from the co-pyrolysis of plastic and biomass raw materials by examining the raw materials, pyrolysis techniques, and the type of reactor used to identify the appropriate parameters. This review discusses biochar production techniques, pyrolysis technology mechanisms, types of pyrolysis, the type of reactor used, the properties of both biomass and plastic raw materials and the properties of biochar produced from various raw materials for comparison. Biochar will be obtained with maximum yield quality from the results of mixing the raw materials for biomass and plastic and optimal operating conditions. It can be an alternative in the bio-oil and syngas energy sector and reduce carbon emissions.
The Utilization of Aluminum Sulfate Doses with Jar Test at Local Water Treatment Company in Jambi CitJ Corry Handayani; Novi Indrawaty; Novrianti Novrianti
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023): Indonesian Journal of Chemical Engineering
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v1i1.459

Abstract

Surface water before being used for certain purposes should be treated by special treatment. This process such kinds of procedure reducing the turbidity, color, and bacteria effect on the water. A kind of attention to the source water is cultivating the water by installing water treatment for the sake of the water that is produced is proper to be consumed and distributed to the society. The local company that does this kind of treatment in Jambi city is the local drinking water company, Tirta Mayang. By using the coagulant, aluminum sulfate, at the treatment processing, this company cultivates the source water from the Batanghari river. Three factors determine the success of the coagulant that is used, listed various chemicals, doses of chemicals, and the mixture of chemicals that are used. By using the jar test, this research yielded that the utilization of aluminum sulfate in the dry season is more than in the rainy season.
Organic Pigment from Cassava Peel as Intermediate Material Marker Ink Martomo Setyawan; Suci Fazriyah N; Lara Arilisa K
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023): Indonesian Journal of Chemical Engineering
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v1i1.470

Abstract

Cassava is the third staple food after rice and corn, and it’s production increase every year. Cassava production for food produces waste in the form of carbon-containing peel. It is known that carbon is used as the main ingredient in the paint and ink manufacturing industry. Carbon from cassava husk can be used as organic ink that is environmentally friendly and safe for health by using natural resins in the form of arabic gum, alcohol, and Polyetilen Glikol solvents which are processed through the stages of water content reduction, carbonization in furnance, purification and variation based on the mass of arabic gum and stirring speed. The color of the ink produced will be more concentrated if the amount of gum arab mass used more and more. The stirring speed will also make the light intensity will be higher

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