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All Journal IPTEK The Journal for Technology and Science CHEESA: Chemical Engineering Research Articles
Muhammad Rizalluddin
Universitas Jember
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT

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Evaluation Of Dehydration Performance Of Belitung Taro (Xanthosoma Sagittifolium) Using Tray Dryer Maktum Muharja; Rizki Fitria Darmayanti; Achri Isnan Khamil; Andika Prastika; Muhammad Rizalluddin; Siska Nuri Fadilah; Difka Augustina Diana Sari
IPTEK The Journal for Technology and Science Vol 34, No 1 (2023)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v34i1.14878

Abstract

Belitung Taro (Xanthosoma sagittifolium) is a plant that can be processed into various food products. The high-water content of taro and the lack of a precise drying system made this material easy to rot. This study aims to evaluate the dehydration performance of tray dryers to reduce the water content of Belitung Taro. The independent variables used were air velocity (3-6 m/s), taro thickness (1-4 mm), and drying time (30-120 min). The results showed that the optimum drying time of taro is 30 min. The dryer airflow of 5 m/s significantly reduces the water content. The thickness of the slices positively affects the drying rate. The lowest water content was obtained in drying with a thickness of 1 mm. The ANOVA results show the effect of thickness, time, and flow rate variations on the drying rate. Three types of mathematical modeling are used to estimate moisture content: Newton, Page, and Modified Page. The Modified Page equation was preferred to detect the moisture content of the taro. From this study, the optimum condition of the tray dryer can be the best solution to dehydrate Belitung Taro effectively and efficiently
Optimization of Ulva sp. Decomposition using H2SO4 with Microwave-Assisted Hydrolysis Method as Feedstock of Bioethanol Bekti Palupi; Muhammad Rizalluddin; Kiki Septianti; Istiqomah Rahmawati; Boy Arief Fachri; Meta Fitri Rizkiana; Helda Wika Amini
CHEESA: Chemical Engineering Research Articles Vol 6, No 1 (2023)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v6i1.14682.13-25

Abstract

Bioethanol is a renewable energy used to reduce dependence on fossil fuels, which have negative impacts on the environment. Furthermore, Ulva sp. contains high levels of carbohydrates, making it potentially suitable as a raw material for bioethanol production. Therefore, this study aims to determine the optimal decomposition process using the microwave-assisted hydrolysis method with an acid solvent (H2SO4), by examining the effects of acid concentration, hydrolysis time, and microwave power. Optimization was carried out using several parameters such as hydrolysis time, microwave power, and the ratio of raw materials to solvents. The ANOVA test results showed that the hydrolysis variable parameter had a significant effect on the reducing sugar content obtained, evidenced by the R2 value of 0.9892. The highest reducing sugar content of 19.71 mg/mL was produced under the operating conditions of 15 min hydrolysis time, 450 W microwave power, and 0.065 g/mL ratio of raw material to solvents.
Co-Authors Achri Isnan Khamil Andika Prastika Bekti Palupi Boy Arief Fachri Difka Augustina Diana Sari Helda Wika Amini Istiqomah Rahmawati Kiki Septianti Meta Fitri Rizkiana Muharja, Maktum Rizki Fitria Darmayanti Siska Nuri Fadilah