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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 6 Documents
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Search results for , issue "Vol 9, No 1 (2022)" : 6 Documents clear
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).
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.
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.
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.
Characterization Of Yogurt With The Addition Of Vegetables To Increase Antioxidants Syaubari Syaubari; Nasrullah Razali; Muhammad Fannka Dhedia; Kevin Sadelah
Journal of Applied Technology Vol 9, No 1 (2022)
Publisher : Journal of Applied Technology

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Abstract

Antioxidant activity can neutralize free radicals in the body and prevent chronic degenerative diseases. Therefore yogurt has a higher antioxidant potential than milk because lactic acid bacteria in yogurt produce antioxidant peptides. To increase antioxidant activity in yogurt, vegetable extracts such as Broccoli and carrots are added as food sources that are high in antioxidant activity. The experiment was carried out by an experimental method with the addition of 20% vegetable extract, 5% skim milk and 3% and 5% yogurt starter by using variations of UHT Cow milk and 600 ml Goat Milk with stirring speed of 400 rpm which was tested at 24 hours. The parameters tested were pH, Lactic Acid, Viscosity and Antioxidants. The results obtained in the form of a very significant increase in lactic acid in the Carrot variant with a Starter 3% and Broccoli 5% with a concentration of 0.8145%; 0.945% for Goat Milk Variant and UHT Milk for Carrot Variant with 3% starter. Based on the results obtained, where the addition of vegetables obtained viscosity (Cp) of 6.4745; 7.9359; 8.2459; 8,344; 14,374; 17,389 in UHT milk and 6,7033; 6,1984; 5,0345; 9,7324; 7,755; 9,0171 in Goat milk.

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