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Wahyu Rinaldi
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Jurusan Teknik Kimia Fakultas Teknik USK Jl. Syech Abdurrauf No.7, Darussalam Banda Aceh - 23111
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Journal of Applied Technology
Published by Universitas Syiah Kuala
ISSN : 16932536     EISSN : 29643198     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering
The JAT covers research and developments activities in the area of chemical and environmental applied technologies in the following scope and focus: • Chemical and Process Technology • Food Chemistry and Technology • Energy Technology • Catalyst Technology • Vegetable and Essential Oil Technology • Natural Product and Pharmacy • Analytical Chemistry • Material Technology • Polymer and Environmental Science.
Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)
Articles 13 Documents
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Antioxidant Activity of Aceh Curry Leaves (Murraya Koenigii) Extracted Using Various Solvents Desy Anggriani; Lisa Azila; Cut Meurah Rosnelly; Hisbullah Hisbullah; Syaubari Syaubari; Teuku Mukhriza
Journal of Applied Technology Vol 10, No 1 (2023)
Publisher : Journal of Applied Technology

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Abstract

Free radicals are molecules that are highly reactive and contain unpaired electrons. These molecules are harmful to healthy cells. Antioxidants have the ability to neutralise free radicals by donating one of their electrons to the molecules that make up free radicals. This prevents free radicals from wreaking havoc on healthy cells. Curry leaf, also known as Murraya Koenigii, is a member of the Rutaceae family and is a spice that is commonly used. By gauging the degree to which various solvents and ratios are able to extract antioxidants from curry leaves, the objective of this study is to find the optimal solvent and combination for doing so. A Soxhlet and a solvent mixture consisting of hexane, chloroform, and ethanol in a ratio of 1:10 were used to extract the anti-oxidant components of curry leaves. With a yield percentage of 30.53 percent, the ethanol solvent proved to be the most efficient of the three in terms of extracting antioxidants from the sample. Not only did extracts of curry leaves obtained from the ethanol solvent have the best yield (when compared to extracts derived from other solvents), but they also have the highest levels of inhibition (54.42%) and antioxidant activity (40.667 ppm) when it comes to catching free radicals.
Characterization of Eco-Friendly Composite Board as a Heat Insulator Based on Polypropylene Waste with Coconut Coir Filler Medyan Riza; Sri Aprilia; Nasrullah Razali; Mukhlishien Mukhlishien; Muhammad Rabani Fikry; Hanif Saputra
Journal of Applied Technology Vol 9, No 1 (2022)
Publisher : Journal of Applied Technology

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Abstract

Composite boards made of coconut fiber with polypropylene as a matrix are an option in dealing with environmental pollution problems caused by these materials. Coconut coir fiber has pores that can absorb heat, which is one of the global problems now. The process of making this composite is divided into 3 stages, namely the preparation stage of coco fiber into two different sizes, namely 40 and 80 mesh. The second stage is the process of preparing polypropylene into a matrix by heating the polypropylene until it melts and the desired texture is obtained. And finally, the mixing process consists of a predetermined fiber size, a polypropylene matrix (10:90, 20:80, 30:70 (%b fiber/%matrix)), and the resulting mixture is printed. The board was tested for its physical properties, namely water absorption and density, then analyzed for its mechanical properties through the fracture modulus test and analyzed the morphology structure, namely SEM and FTIR, as well as heat resistance testing through the Differential Scanning Calorimetry test and the Thermogravimetric Analyzer test. From the results of the study, it was obtained that a sample with a size of 40 mesh and a ratio of 10:90 had the best density and DSA values, namely 0.794 gr/cm3 and 2.8%. The best sample mechanical properties were obtained by a sample with a size of 80 mesh at a ratio of filler to matrix of 10:90 with an MOR value of 7.75 and an MOE of 1198 MPa. The highest melting point of the composite board was obtained in the f/m3 sample with a filler: matrix percentage of 30:70 and a coir size of 40 mesh, at a temperature of 518 oC. The highest thermal stability was obtained in the f/m6 sample with a filler and matrix percentage of 30:70, with a thermal stability temperature ranging from 290 to 533 and a mass loss of 4.26 mg.
Increasing Crude Protein Content of Sago Dregs Through Solid State Fermentation Process Syahiddin Dahlan Said; Komala Pontas; Anwar Thaib; T. Maimun; Cut Silvianti; Ayi Ansarmina
Journal of Applied Technology Vol 9, No 1 (2022)
Publisher : Journal of Applied Technology

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Abstract

Increasing the protein content in sago dregs aims to increase its nutritional value so that it is more useful as animal feed. Increasing protein in sago dregs was carried out by solid state fermentation using Trichoderma reesei bioconversion agent. Fermentation process variables considered in this study were fermentation time (0, 2, 4, 6, 8, 10 days), substrate moisture content (50, 60, 70, and 80%), substrate C/N ratio (10:1, 20:1, 30:1, and 40:1), and the molasses content in the substrate (20, 30, 40, and 50%). The optimum conditions for the fermentation process were obtained at: 6 days fermentation time, 20:1 C/N ratio, and 50% substrate moisture content. Under optimum conditions, the fermentation process with a substrate containing 20% and 50% molasses resulted in a protein content of 18, 4 and 31% (product dry weight).
The Effect of Chitosan Concentration on the Mechanical Strength of Anti- Bacterial Biodegradable Plastic Made from White Sweet Potato Starch (Ipomoea batatas) Lia Mairiza; Sofyana Sofyana; Aula Chairunnisak; Putri Syafrilia; Silvera Isnaini
Journal of Applied Technology Vol 10, No 1 (2023)
Publisher : Journal of Applied Technology

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Abstract

Research on antibacterial biodegradable plastic made from white sweet potato starch (Ipomoea batatas) has been carried out. The purpose of this study was to examine the effect of chitosan concentration on mechanical strength. The independent variables used were the concentration of chitosan, which was 0%; 0.01%; 0.03%; 0.05%; 0.07% (w/v). The mechanism of this research was carried out by dissolving various concentrations of chitosan in glacial acetic acid, with a concentration of 10% (w/v) white sweet potato starch dissolved in distilled water, then adding glycerol as a plasticizer at a gelatinization temperature between 80o-95oC, using a stirring speed of 75 rpm. The research results show that the addition of chitosan can increase the tensile strength value of the film mixed with chitosan and sweet potato starch, where the maximum tensile strength value obtained in this study is found in films with a concentration of 0.07% chitosan worth 0.0645 kgf/cm2 and a maximum value of % elongation of the starch mixture film white sweet potato and chitosan were obtained from films with a chitosan concentration of 0.07%, which is around 5.6%. Meanwhile, the white sweet potato plastic film without chitosan had tensile strength and elongation values of 0.0577 kgf/cm2 and 10.7%, respectively.
Modeling and Simulation study on Cement Raw Mill Process Control Hisbullah Hisbullah; Azwar Azwar; Rahmadin Rahmadin; Hasan Rahmat; Abubakar Abubakar
Journal of Applied Technology Vol 9, No 1 (2022)
Publisher : Journal of Applied Technology

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Abstract

The composition of oxides in cement raw materials tends to be unstable depending on the location where the raw materials are taken. Changes in the composition of these raw materials affect the performance of the control system on the raw mill. In this study, the modeling and simulation of the Raw Mill unit control algorithm for changes in the oxide composition of raw materials is studied. This modeling is carried out to see the performance of the control system on changes in the composition of raw materials. This study aims to develop a raw mix control algorithm and test its performance when the data for the analysis of the oxide composition is not available. The research method used is a simulation study using MATLAB software, namely: (1) Creating a mathematical model regarding the incoming mass flow rate from the raw mill; (2) Running a simulation of the raw mill inlet mass flow rate process; and (3) Testing the performance of the control algorithm in overcoming the problem of lack of data. analysis of oxide composition in raw materials with scenarios that include processes with fixed setpoints and changing setpoints. The results showed that the raw mix design control algorithm can only control the raw meal parameters if the data for the analysis of the oxide composition is available. With these results, the control algorithm for the raw mill control process needs to be modified in order to maintain the raw meal parameters when the oxide composition analysis data is not available.
Production of Quinone Enzyme from Nicotiana tabacum Cell Culture Using Immobilized Dry Plant Foam Teuku Maimun; Mirna Rahmah Lubis; Komala Pontas; Anwar Thaib; Abubakar Abubakar
Journal of Applied Technology Vol 10, No 1 (2023)
Publisher : Journal of Applied Technology

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Abstract

A study of immobilization of Nicotiana tabacum cell culture to increase the concentration of the quinone enzyme CoQ10 has been carried out. The immobilization medium was in the form of dry plant foam (dry ridge gourd). Cell growth and concentration of quinone enzyme were measured by fresh weight of the cell and High-Performance Liquid Chromatography methods, respectively. Immobilization of the Nicotiana tabacum plant cell culture was effective for cell growth, and increase CoQ10 concentration. CoQ10 concentration from the immobilized cell culture of the Nicotiana tabacum plant was 0.060 mg/g fresh cell weight after seven days of cultivation. The optimum temperature for the concentration of CoQ10 enzyme was 35°C.
Production of Single Cell Protein by Aspergillus niger Using a Mixture of Coffee Husk and Molasses as Substrate Syahiddin Dahlan Said; Muhammad Zaki; Nasrullah - RCL; Mukhlishien Mukhlishien; Maulida Maulida; Meysa Nadia Harahap; Mentarina Rizki
Journal of Applied Technology Vol 10, No 1 (2023)
Publisher : Journal of Applied Technology

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Abstract

Gayo is one of the districts in the province of Aceh, one of the largest Arabica coffee producers in Indonesia. So far, coffee husk produced from coffee fruit processing have not been used optimally, causing environmental problems. Efforts to utilize coffee husk as a substrate to produce single cell protein (SCP) can be considered, besides overcoming environmental problems, it will also produce alternative proteins to substitute traditional proteins. A study has been carried out to evaluate the potential of Gayo Arabica coffee husk as a substrate to produce SCP using solid state fermentation with Aspergillus niger as a bioconversion agent. The results showed that the C/N ratio and water content of the substrate were variables that greatly influenced protein production. The highest protein production was produced by substrate with a C/N ratio of 10 and a water content of 50% (w/w) with a fermentation time of 4 days. Increasing the level of molasses in the substrate mixture linearly increases protein production.Keywords: single cell protein, solid state fermentation, Aspergillus niger, coffee husk, molasses
Controlling Strategies Of Krueng Doy River Water Pollution Of Banda Aceh City Adi Winata; Edi Munawar; Nasrullah Nasrullah
Journal of Applied Technology Vol 9, No 1 (2022)
Publisher : Journal of Applied Technology

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Abstract

This study aims to analyze the quality of river water and also to formulate several pollution control strategies that can be applied in community life in a sustainable manner. Analysis of the water quality of the Krueng Doy River in Banda Aceh City was carried out by comparing it to the Government Regulation of the Republic of Indonesia number 82 of 2001. The method used in this research is to use the SWOT matrix. River water quality in upstream and downstream areas has increased pollution index. SWOT analysis shows that Krueng Doy river management policy is currently in quadrant IV with characteristics of SW and OT, so that the strategy used is "defensive", namely by utilizing opportunities derived from elements of the Government's role and prioritizing policy with (1) river sustainability utilization policy; (2) community education and prevention of waste and waste throughout the river; (3) Decisive action for the perpetrators of pollution against the river environment; and (4) community empowerment and the provision of river management budgets.
Recent Status and Research & Development in the Carbon Capture, Utilization and Storage Technology Mahidin Mahidin; Farid Mulana; Adisalamun adisalamun; A.A. Reza; M. F. Dhedia; A. Annisak; Halimatussakdiah Halimatussakdiah; Abdul Hadi
Journal of Applied Technology Vol 10, No 1 (2023)
Publisher : Journal of Applied Technology

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Abstract

The recently rapid extension and expansion of the industrial and energy sector has increased the number of carbon dioxide (CO2) in environment. Consequently, many concerns have been studied about the prevention of global warming and the achievement of climate mitigation strategy.  In this paper, the current situation of many aspects of carbon capture, utilization and storage (CCUS) technologies were concisely reviewed and discussed. The CCUS technology, using CO2 separation/capture, storage, utilisation, and sequestration processes, is currently considered as the most proactive method to prevent the emission of CO2 to the atmosphere and mitigate climate change and global warming. In this paper, the source of CO2 production and which country that produce its carbon dioxide were discussed and also reviewed type of technologies could be adopted to capture of those CO2 with its any advantages and disadvantages. In order to employ those technologies as a cost-effective technology for the reduction of CO2 emissions from the use of fossil fuels, research and development in its related processes and materials should put in a highest priority.
The Effect of Adhesive Types of Damar and Pine Resin for Biobricket Manufacturing from Sugarcane Bagasse Mentarina Rizki; Safira Mustaqilla; Zuhra Zuhra; Wahyu Rinaldi; T Mukhriza
Journal of Applied Technology Vol 9, No 1 (2022)
Publisher : Journal of Applied Technology

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Abstract

Biobriquette is an alternative fuel that is produced using biomass, namely bagasse waste. Bagasse has a high cellulose content of 37.65. The purpose of this biobriquette research was to see the effect of the type of resin adhesive and pine resin using the carbonization method by reviewing the quality of the calorific value, moisture content, compressive strength, and ash content using different ratios of raw materials and adhesives so as to produce good biobriquettes according to with SNI. From the test results, the characteristics of briquettes in the form of calorific values ranged from 7033.70 cal/gr-7878.72 cal/gr where the highest calorific value of resin adhesives, the ratio of raw materials and 50:50% was 7,878.72 cal/g, while the lowest calorific value was at 65:35% mixed adhesive briquettes ie 7,033.70 cal/g. The test results on the compressive strength ranged from 13.15 kg/cm2 to 224.72 kg/cm2 where the highest compressive strength value was 50:50% resin adhesive, which was 244.3 kg/cm2, the lowest compressive strength value was 80:20% mixed adhesive, namely 13.15 kg/cm2. The water content test obtained values ranging from 3.33% to 4.21%, the highest water content of 80:20% pine adhesive was 4.21%, the lowest water content was pine adhesive and 50:50% resin, which was 3.33%. The results of the ash content test ranged from 2.52 g to 4.96 g, the highest ash content of 80:20% mixed adhesive was 4.96% and the lowest ash content was 50:50% pine adhesive briquette which was 2.52%. From all the analyzes that have been carried out, it can be concluded that briquettes using resin adhesive with a ratio of raw materials and adhesives of 50:50% have the best quality compared to other briquettes where the briquettes that have been produced meet the quality of SNI.

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