Pengaruh Motivasi Dan Persepsi Terhadap Keputusan Berkunjung Wisatawan Di Pulau Onrust

The study aims to determine the influence of Motivation on tourists' Visiting Decisions on Onrust Island, find out the influence of Perceptions on Tourists' Visiting Decisions on Onrust Island and find out the influence of Motivation and Perceptions on tourists' Visiting Decisions on Onrust Island. This research method approach uses quantitative techniques with statistical data to be analyzed through data collection techniques through sample techniques and purposive sampling by involving existing tourists on the island of Onrust. From the sampling data carried out, an analysis was carried out using SPSS. The results showed that both simultaneously and partially, the variables of motivation (X1) and perception (X2) had a significant positive effect on visiting decisions (Y). And based on the results of determination, an R2 value of 0.683 was obtained, which means that motivation and perception influenced the decision to visit by 68.3%.Penelitian bertujuan untuk  mengetahui pengaruh Motivasi terhadap Keputusan Berkunjung wisatawan di Pulau Onrust, mengetahui pengaruh Persepsi terhadap Keputusan Berkunjung wisatawan di Pulau Onrust dan mengetahui pengaruh Motivasi dan Persepsi terhadap Keputusan Berkunjung wisatawan di Pulau Onrust. Hasil penelitian menunjukan bahwa baik secara simultan maupun parsial, variabel motivasi (X1) dan persepsi (X2) berpengaruh secara positif signifikan terhadap keputusan berkunjung (Y). Dan berdasarkan hasil determinasi diperoleh nilai R2 sebesar 0,683 yang artinya motivasi dan persepsi mempengaruhi keputusan berkunjung sebesar 68,3%

Air Injection Effect on Energy Consumption and Production of Hydroxyl Radicals at Plasma Anode

Background and Objective: Plasma anode has been known as a very productive method of producing hydroxyl radicals that oxidize effectively in almost all organic and non-organic liquids. This research was conducted to investigate the effect of air injection and anode depth variation on required energy for plasma generation and production of hydroxyl radicals. Material and Method: A batch reactor (diameter 130 mm, height 190 mm) with tungsten electrodes (cathode diameter 6 mm and anode diameter 0.5 mm) was used by applying a continuous cooling system. The experimental parameters were composed of different rate of air injection (0, 2, 4, and 6 Lmin-1) and various depth of anode (5, 25, 45, and 65 mm). Current was observed at various voltage (20 – 700 V) in 30 second for each voltage. Result: The energy consumption of plasma formation was getting smaller at higher rate of air injection, while at deeper anode position, the energy consumption found higher. Although the •OH production became lower at a higher rate of air injection, the process efficiency observed higher. Conclusion: This research clarified that air injection on plasma anode and the anode depth position affected the energy consumption and production of hydroxyl radicals where the addition of air injection and variation of the anode depth could reduce energy consumption and also improved process efficiency

Effect of Low Flow Rate of Air Injection on Remazol Red Degradation in Contact Glow Discharge Electrolysis Reactor

Background and Objective: The plasma electrolysis requires a high amount of energy at the beginning of the process. The purpose of the study was to examine how air injection could reduce the energy of plasma formation. Furthermore, the effect of the flow rate of injected air on hydroxyl radical production and Remazol Red degradation were also studied. Materials and Methods: In this research, the air was injected directly through the glass sheath at the anode in Contact Glow Discharge Electrolysis reactor. Material used were Remazol Red RB-133 200 ppm as synthetic dye waste, Fe2+ 20 ppm as catalyst and Na2SO4 0.02 M as electrolyte solution. Result: For the same energy input, the higher the flow rate of air injection, the radical hydroxyl concentration increased to an optimum point at a certain flow rate. Moreover, the rate of airflow at optimum condition increased with increasing voltage. An airflow rate of 0.05 L/min and a voltage of 600 Volts was the optimum condition. The concentration of hydroxyl radical at this condition produced 19.0849 mmol/L after 30 minutes. Conclusion: This was an increase of 48.43% in comparison with the amount of •OH where air injection was not used. The presence of air injection also increased the degradation of Remazol Red. Within 5 minutes, Remazol Red degradation had reached 86.37% at an airflow rate of 0.05 L/min. This indicated a 53.59% increase compared to the degradation process without air injection

Effect of Low Flow Rate of Air Injection on Remazol Red Degradation in Contact Glow Discharge Electrolysis Reactor

Background and Objective: The plasma electrolysis requires a high amount of energy at the beginning of the process. The purpose of the study was to examine how air injection could reduce the energy of plasma formation. Furthermore, the effect of the flow rate of injected air on hydroxyl radical production and Remazol Red degradation were also studied. Methodology: In this research, the air was injected directly through the glass sheath at the anode in Contact Glow Discharge Electrolysis reactor. Result: For the same energy input, the higher the flow rate of air injection, the radical hydroxyl concentration increased to an optimum point at a certain flow rate. Moreover, the rate of airflow at optimum condition increased with increasing voltage. An airflow rate of 0.05 L/min and a voltage of 600 Volts was the optimum condition. The concentration of hydroxyl radical at this condition produced 19.0849 mmol/L after 30 minutes. Conclusion: This was an increase of 48.43% in comparison with the amount of •OH where air injection was not used. The presence of air injection also increased the degradation of Remazol Red. Within 5 minutes, Remazol Red degradation had reached 86.37% at an airflow rate of 0.05 L/min. This indicated a 53.59% increase compared to the degradation process without air injection