The Experts below are selected from a list of 30 Experts worldwide ranked by ideXlab platform
Juha Tanskanen - One of the best experts on this subject based on the ideXlab platform.
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controlled feeding of lignocellulosic substrate enhances the performance of fed batch enzymatic hydrolysis in a stirred tank reactor
Biomass & Bioenergy, 2016Co-Authors: Ville Sotaniemi, Sanna Taskila, Heikki Ojamo, Juha TanskanenAbstract:Abstract High initial viscosity in the high-solids (>15% (w/v)) enzymatic hydrolysis of lignocellulose is problematic especially in stirred tank reactor concepts. One potential way to avoid the high viscosity is the fed-batch feeding of lignocellulosic material to the reactor. In the current study the hydrolysis of filter paper with final concentration of 19.1% (w/w) was evaluated with different fed-batch procedures. Feeding was based on visual observation, stepwise feeding and the power requirement of the Stirrer Motor. All the fed-batch procedures resulted in similar yields within 30 h (47–49%) which were higher than with the batch process in similar reactor (38%). However, the mixing behavior was superior in the power based feeding as the instantaneous power of the Stirrer Motor was kept lower ( 20 W). The power controlled procedure was further evaluated with different enzyme doses, tip speeds and the power levels of substrate feed. Further study showed that the power controlled feeding is applicable also to other hydrolysis and mixing conditions if power levels of substrate feed are set correctly. Higher (15 FPU/g) enzyme dose caused shorter feeding time (3.0 ± 0.5 h) and lower energy consumption during the feeding period (14 ± 3 Wh) compared with lower (5 FPU/g) enzyme dose (7.0 ± 1.3 h and 33 ± 5 Wh, respectively). The tip speed and the power level of substrate feed had fewer effect on these factors. The performance of the hydrolysis process can thus be enhanced by the substrate feed controlled by the power of the Stirrer Motor.
Hutabri Ellbert - One of the best experts on this subject based on the ideXlab platform.
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RANCANG BANGUN ALAT PEMBUAT MINUMAN OTOMATIS BERBASIS ARDUINO UNO
LPPM Putera Batam, 2020Co-Authors: Sitorus, Halasan Pardamean, Hutabri EllbertAbstract:The rapid development of automatic technology at this time penetrated all fields, especially in the field of food and beverages. One of them is an automatic beverage machine that can make drinks more practical in terms of mixing the ingredients of drinks, stirring and pouring water. In the automatic beverage machine there is still a weakness, namely the user is still in physical contact, pressing the menu and still having to go to the machine and wait for the process to finish. Based on these weaknesses, an automatic beverage maker is made by ordering drinks through an Android-based smartphone application connected to the beverage machine through ESP 8266 then processed arduino uno. The Motor shield as a control in removing ingredients in the manufacture of drinks and relay module as control Motor Stirrer, Motor pump, solenoid valve and buzzer. Percentage of error for each brewing ratio is bitter coffee with a percentageof an error 4,26 %, sweet coffee with a percentage of an error 3,60 %, milk drinks with an error percentage of 3,60 % and milk coffee with an error percentage of 3,92 %
Ville Sotaniemi - One of the best experts on this subject based on the ideXlab platform.
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controlled feeding of lignocellulosic substrate enhances the performance of fed batch enzymatic hydrolysis in a stirred tank reactor
Biomass & Bioenergy, 2016Co-Authors: Ville Sotaniemi, Sanna Taskila, Heikki Ojamo, Juha TanskanenAbstract:Abstract High initial viscosity in the high-solids (>15% (w/v)) enzymatic hydrolysis of lignocellulose is problematic especially in stirred tank reactor concepts. One potential way to avoid the high viscosity is the fed-batch feeding of lignocellulosic material to the reactor. In the current study the hydrolysis of filter paper with final concentration of 19.1% (w/w) was evaluated with different fed-batch procedures. Feeding was based on visual observation, stepwise feeding and the power requirement of the Stirrer Motor. All the fed-batch procedures resulted in similar yields within 30 h (47–49%) which were higher than with the batch process in similar reactor (38%). However, the mixing behavior was superior in the power based feeding as the instantaneous power of the Stirrer Motor was kept lower ( 20 W). The power controlled procedure was further evaluated with different enzyme doses, tip speeds and the power levels of substrate feed. Further study showed that the power controlled feeding is applicable also to other hydrolysis and mixing conditions if power levels of substrate feed are set correctly. Higher (15 FPU/g) enzyme dose caused shorter feeding time (3.0 ± 0.5 h) and lower energy consumption during the feeding period (14 ± 3 Wh) compared with lower (5 FPU/g) enzyme dose (7.0 ± 1.3 h and 33 ± 5 Wh, respectively). The tip speed and the power level of substrate feed had fewer effect on these factors. The performance of the hydrolysis process can thus be enhanced by the substrate feed controlled by the power of the Stirrer Motor.
Subari A. - One of the best experts on this subject based on the ideXlab platform.
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Rancang Bangun Sistem Pengontrol Batch Mixer pada Industri Minuman dengan Metode Pid Berbasis Arduino Uno R3
'Faculty of Engineering Diponegoro University', 2018Co-Authors: Hati R. P., Subari A.Abstract:Redi Permata Hati, Arkhan Subari, in this paper explain that batch Mixer is a tool that accommodates some of the raw materials to be mixed so that it becomes a USAble product. Raw materials can be a liquid, solid and gas. The use of raw materials and way of mixing the raw materials that distinguish Batch Mixer design at each industry. In this thesis, design Batch Mixer consists of two tanks, namely the mixing tank and tank heaters. In the mixing tank, there HCSR-04 Ultrasonic sensor that functions as a detector of the level of the liquid level, and the Stirrer Motor-driven DC 12 V. While the heater tank, there MAX6675 Thermocouple temperature sensor and heater. There are also three pumps that pump fluid 1, pump 2 and pump fluid mixing. Batch Mixer working process is controlled automatically using the Arduino Uno R3 displayed via HMI Raspberry Pi. The use Arduino Uno R3 allows users to create a variety of issues related to the microcontroller. The control system is used to control the work process in a plant. The control system in the Batch Mixer works by two indicators: the water level and water temperature. In the manufacturing system, water temperature control using PID control (Proportional Integral Derivative) with PID tuning method to find the value of Kp, Kd, and Ki. Based on test results, use the most optimal value for use PID control value Kp = 60, Ki = 0.005 and Kd = 0.5. By using the value of the achievement level will be faster and the value of the maximum error of 2.5% is still within the tolerance limits of 3%
Sanna Taskila - One of the best experts on this subject based on the ideXlab platform.
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controlled feeding of lignocellulosic substrate enhances the performance of fed batch enzymatic hydrolysis in a stirred tank reactor
Biomass & Bioenergy, 2016Co-Authors: Ville Sotaniemi, Sanna Taskila, Heikki Ojamo, Juha TanskanenAbstract:Abstract High initial viscosity in the high-solids (>15% (w/v)) enzymatic hydrolysis of lignocellulose is problematic especially in stirred tank reactor concepts. One potential way to avoid the high viscosity is the fed-batch feeding of lignocellulosic material to the reactor. In the current study the hydrolysis of filter paper with final concentration of 19.1% (w/w) was evaluated with different fed-batch procedures. Feeding was based on visual observation, stepwise feeding and the power requirement of the Stirrer Motor. All the fed-batch procedures resulted in similar yields within 30 h (47–49%) which were higher than with the batch process in similar reactor (38%). However, the mixing behavior was superior in the power based feeding as the instantaneous power of the Stirrer Motor was kept lower ( 20 W). The power controlled procedure was further evaluated with different enzyme doses, tip speeds and the power levels of substrate feed. Further study showed that the power controlled feeding is applicable also to other hydrolysis and mixing conditions if power levels of substrate feed are set correctly. Higher (15 FPU/g) enzyme dose caused shorter feeding time (3.0 ± 0.5 h) and lower energy consumption during the feeding period (14 ± 3 Wh) compared with lower (5 FPU/g) enzyme dose (7.0 ± 1.3 h and 33 ± 5 Wh, respectively). The tip speed and the power level of substrate feed had fewer effect on these factors. The performance of the hydrolysis process can thus be enhanced by the substrate feed controlled by the power of the Stirrer Motor.