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HC, Fadarina
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RANCANG BANGUN TRAY DRYER SISTEM HYBRID (SURYA-HEATER) UNTUK PENGERINGAN IKAN ASIN Yuliati, Selastia; Kalsum, Leila; Junaidi, Robert; HC, Fadarina; Azizah, Roro Rizqi Ramadhani; Utami, Winda Andea; Ningrum, Galuh Martiyah
KINETIKA Vol. 11 No. 2 (2020): KINETIKA 01072020
Publisher : Politeknik Negeri Sriwijaya

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Drying process on salted fish is one of the factors that determine the quality of the products produced. Conventional drying has many weaknesses, namely fluctuating heat, poor hygiene and requires a large enough space and can affect product quality. One of alternatives in drying salted fish is using a hybrid system tray dryer with a solar energy source with additional electrical energy (heater). This study aimed to design a tray dryer with hybrid system (solar-heater), obtained the performanced of the dryer based on drying rate, heat transfer and heat efficiency of the hybrid system tray dryer (solar-heater), and obtained salted fish that met the water content standards based on SNI No. 01-2721- 2009. The treatments varied were drying time of 60 minutes, 120 minutes, 180 minutes, 240 minutes and 300 minutes and the variations of drying temperature of 60oC, 70oC and 80oC. The results showed that the optimum drying conditions were drying using temperature of 70oC with a drying time of 300 minutes, a moisture content of 31.2%, a drying rate of 0.1492 kg/hour m2, a conduction heat transfer rate is 52.01 J, a convection heat transfer rate is 71.15 J, a radiation heat transfer rate is 0.048 J and heat efficiency of 53.28%.
PEMBUATAN BUBUK KONSENTRAT PROTEIN KELAPA (BLONDO) SEBAGAI SUSU RENDAH LEMAK MENGGUNAKAN ALAT PENGERING BEKU VAKUM Afrizal, Muhammad; HC, Fadarina; Purnamasari, Indah
KINETIKA Vol. 11 No. 2 (2020): KINETIKA 01072020
Publisher : Politeknik Negeri Sriwijaya

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Coconut protein concentrate (blondo) can be used as a milk product because it has a high nutrient and mineral content, so it can be used as an affordable alternative to formula milk to treat malnutrition in Indonesia. Coconut protein concentrate (blondo) is packaged in powder form, so that the product lasts longer. Vacuum freeze dryer is suitable for drying coconut protein concentrate (blondo) which is susceptible to high temperatures to avoid denaturation of its protein content. Coconut protein concentrate (blondo) with mass variations of 40 and 50 gr was put into a freeze dryer to be dried with variations in vacuum pressure at 64, 67, 70 and 73 cmHg. The comparison of the quality of each product will be viewed from the moisture, protein and fat content. Based on the results of the analysis obtained, at a vacuum pressure of 73 cmHg with a mass of 50 gr has the best quality results with a moisture content of 4.99%, a protein content of 23.84% and a fat content of 10.90%. Thus, the greater the vacuum pressure, the better the quality of the product.
ISSN: 1693-9050 E-ISSN: 2623-1417 https://jurnal.polsri.ac.id/index.php/kimia/index 55 PROTOTIPE BATERAI BERBASIS KARBON AKTIF DARI BAMBU BETUNG (TINJAUAN PENGARUH KARBON AKTIF DAN ELEKTROLIT DALAM MENINGKATKAN DAYA BATERAI) Pahlevi, Muhammad Agmerio; Junaidi, Robert; HC, Fadarina
KINETIKA Vol. 11 No. 1 (2020): KINETIKA 01032020
Publisher : Politeknik Negeri Sriwijaya

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Battery is a storage technology electrical energy used for laptops, digital cameras, and cell phones, which are examples of applications that use battery performance. Battery performance involves the transfer of electrons which are conductive. Electron transfer become from the negative electrode (anode) to the positive electrode (cathode), resulting in an electric current and a potential difference. In general the battery system can be classified into two types, that are primary battery system and the secondary battery system. In this research, we use bamboo betung (Dendrocalamus asper) as activated carbon with electrolytes NaCL and NaOH. First, Bamboo Betung which will be carbonized at 500 oC for 2 hours in this furnace is intended to get the best pore for SEM analysis and to increase porosity, the largest measurement result of activated carbon pores is 11.42 μm with 12% KOH activation. Then, the activation was carried out with 1 M KOH with a concentration of 10-12%, then the electrolytes selected were NaOH and 1 M NaCl as much as 5-15 ml. Measurement of voltage and current obtained the smallest power obtained in the measurement of activated carbon 10% KOH with 5 ml NaCL electrolyte of 7.5036 mWatt. The greatest power was obtained in the measurement of activated carbon activated by 12% KOH with 15 ml NaOH electrolyte 103.0336 mWatt.
Co-Authors Azizah, Roro Rizqi Ramadhani Indah Purnamasari Kalsum, Leila Muhammad afrizal Ningrum, Galuh Martiyah Pahlevi, Muhammad Agmerio Robert Junaidi Selastia Yuliati Utami, Winda Andea