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All Journal Teknotan: Jurnal Industri Teknologi Pertanian Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Murad Murad
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Agriculture, Biological Sciences & Forestry Other

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Model Matematis Prediksi Laju Pengeringan Manisan Pepaya pada Alat Pengering Tipe Rak Murad Murad; Sukmawaty Sukmawaty; Joko Sumarsono; Syahroni Hidayat
Teknotan: Jurnal Industri Teknologi Pertanian Vol 15, No 1 (2021): TEKNOTAN, Agustus 2021
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jt.vol15n1.6

Abstract

Pengeringan secara konvensional masih banyak kekurangan, salah satunya sangat tergantung dengan cuaca. Sehingga perlu dilakukan suatu penanganan alternatif yaitu dengan menggunakan alat pengering mekanis menggunakan tambahan panas dan memerlukan energi untuk memanaskan bahan dan menguapkam air yaitu dengan menggunkan alat pengering seperti alat pengering tipe rak. Penelitian ini fokus pada penentuan konstanta laju pengeringan manisan pepaya baik hasil eksperimen ataupun prediksi menggunakan pengering tipe rak yang diberikan blower. Variabel yang digunakan adalah kecepatan aliran udara blower 3.43 m/detik dan 4.55 m/detik. Diperoleh hasil bahwa konstanta laju pengeringan prediksi memiliki nilai determinansi mencapai lebih dari 90% dengan nilai RMSE sangat kecil, masing-masing 0.065 dan 0.125. Penggunaan kecepatan aliran udara tidak terlalu mempengaruhi nilai konstanta laju pengeringan.
Pengeringan Biji Kemiri pada Alat Pengering Tipe Batch Model Tungku Berbasis Bahan Bakar Cangkang Kemiri (Drying of pecan seed using Batch Type dryer with pecan sheel fuel): Drying of Pecan Seed using Batch Type dryer with Pecan Sheel Fuel Murad Murad; Rahmat Sabani; Guyup Mahardhian Dwi Putra
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 3 No 1 (2015): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (433.822 KB)

Abstract

Generally, this research aimed to study drying characteristic of pecan seed on a Batch type (stove) dryer using pecan shell as fuel. Specifically, this research aimed to determine moisture content reduction, temperature change, drying rate, mass transfer rate, air dryer flow rate, energy requirement, drying efficiency, and drying capacity. This research used experimental method in order to determine drying characteristic of pecan on thin layer method using oven, which was conducted in laboratorium by temperature varied of 40oC, 50oC, 60oC, 70oC, dan 80oC. Thick layer method was conducted by trial mathematical model, i.e. collected data from drying stage on batch stove dryer then analyzed using software based on mathematical model, actual data were also collected from on field experiments. Measurement of pecan geometric characteristic also had been conducted. Result showed that pecan had sphericity number of 0.79. Characteristic curve of thin layer drying obtained from analytical result showed the drying rate was decreasing and correlation between ln MR (%db) with t (hours) on drying temperature of 40 oC to 80 oC showed decreasing moisture content and drying rate towards drying time. General equation for moisture content ratio, MR = exp (-0,0141.T – 0,2583)*t. Graphic of correlation between fuel (kg) and moisture content equilibrium (%) showed decreasing moisture content equilibrium at every fuel addition.
Analisis Energi Panas Pada Proses Pengeringan Manisan Pepaya (Carica papaya l.) Menggunakan Alat Pengering Tipe Rak (Analysis of Thermal Energy in Candied Papaya (Carica papaya L.) Drying Process using Shelf Type Dryer): Analysis of Thermal Energy in Candied Papaya (Carica papaya L.) Drying Process using Shelf Type Dryer Dwi Yulita; Murad Murad; Sukmawaty Sukmawaty
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 4 No 1 (2016): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (535.864 KB)

Abstract

Conventional drying still has many deficiencies; weather dependence is one of the problems. Therefore, alternative treatment needed to be conducted by using mechanical dryer that use heat and require additional energy for heating the material and vaporized the water, such as a shelf type dryer. This study aims to analyze thermal energy and studying energy balance in candied papaya drying process at shelf-type. This research was conducted at Laboratory of Bioprocess Engineering and Laboratory of Power and Machinery, in Studies Program of Agriculture Engineering, Faculty of Food and Agroindustrial Technology, University of Mataram. This study was performed using experimental design and energy equilibrium approach, with variable of air flowrates which varies at 3.43 m/sec and 4.55 m/sec. Amount of the outcoming energy obtained at 3.43 m/sec was 4477.12 to 4821.52 kJ/h and at 4.55 m/sec was 5437.80 kJ/h to 6797.25 kJ/h. While useful energy at 3.43 m/sec decreasing from 3675.37-1336.83 kJ/h and useful energy at 4.55 m/sec decreasing from 3891.71 kJ/h to 1082.45 kJ/h. The outcoming energy decreasing from 4926.06 kJ/h to 2292.07 kJ/h at3.43 m/sec and 5247.75 kJ/h to 2155.51 kJ/h at 4.55 m/sec.
Pengeringan Lapis Tipis Kopra Putih Menggunakan Oven Pengering: White Copra Thin Layer Method using Drying Oven Murad Murad; Rahmat Sabani; Guyup Mahardhian Dwi Putra
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 3 No 2 (2015): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.823 KB)

Abstract

West Nusa Tenggara has enormous potential as coconut producer in Indonesia. With total area 64.297,10 ha, it can produced coconuts in amount of 49670.93 tons (NTB in Figures, 2010). Most of the coconut was sent to Java Island, whereas some local communities process the coconuts into copra and traditional coconut oil. However, NTB as producer of copra has not been able to produce good quality copra because the traditional process is conducted using simple processing equipment, requires large human power, and long processing time. Due to these limitiation, it is necessary to implement appropriate technology by using shelf-type dryer (tray dryer) tool that utilizes solar energy as a source of thermal energy. Using solar collectors panel, the dryer produce heat higher than using direct drying and the temperature can be controlled. Purpose of this study was to determine characteristics of copra drying processes (temperature, relative humidity, effective drying rate, and relation between effective drying rate and water content) using oven as ideal drying tool, for further application on solar-energy tray-dryer type. Drying was conducted until water content achieved 9%, the observed and calculations data were plotted into graphic then studied descriptively. Calculated variables are reduction in weight material, moisture content, drying air temperature, ambient air temperature, outflow air temperature, material temperature, air humidity, drying efficiency, air flow rate, and intensity of solar radiation. Constant value indicates that the higher the drying air temperature, the more rapid time were needed to decrease moisture content of the material, therefore the obtained general equation for water content ratio becomes MR = exp (-0,0141.T - 0.2583) * t.
Kajian Pengeringan Jahe (Zingiber Officinale Rosc) berdasarkan Perubahan Geometrik dan Warna menggunakan Metode Image Analysis (Study of Dried Ginger (Zingiber Officinale Rosc) based on Changes in Geometric and Color using Image Analysis): Study of Dried Ginger (Zingiber officinale Rosc)Based on Changes in Geometric and Color using Image Analysis Devi Risdianti; Murad Murad; Guyup Mahardhian Dwi Putra
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 4 No 2 (2016): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (559.082 KB) | DOI: 10.29303/jrpb.v4i2.35

Abstract

Purpose of this study was to determine change in geometric and color during the drying process using image analysis method. Method used in this study was experimental method. Tools and materials used were ginger, image acquisition box, digital cameras, and computers. Measured parameters included temperature, moisture content, mass of material, geometry and color changes. Results from this study showed that the lowest value of material mass was 1.91 gr of the lowest shelf and 3.21 gr of the upper shelf which directly proportional to the reduction of material moisture content at lowest shelf by 5.66%, due to the heating source placed near the shelf, therefore it will directly heat the material. While the highest value was showed by the highest shelf material of 13.93% moisture content. Actual measurement of surface shrinkage showed declining during 8-hour drying and result from image analysis ranged from 37,548 to 17,201 pixels, 27.77 cm2 to 10.07 cm2by using trapezoidal numerical integration of the highest shelf, and 27.3 cm2 to 10.37 cm2 by using Simpson methods. Based on this study, image analysis can be used to measure ginger color changes from yellowish white to brownish yellow and measure surfaces shrinkage.
Co-Authors Devi Risdianti Dwi Yulita Guyup Mahardhian Dwi Putra Joko Sumarsono Rahmat Sabani Sukmawaty Sukmawaty Sukmawaty Sukmawaty Syahroni Hidayat