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The Duration of Sodium Methoxide Catalyst Impregnation in Methanol and Its Impact on the Reduction Monoglyceride Content in Biodiesel Production Sinaga, Boy Andika; Darma, Frandika; Rahmadhani, Rahmadhani
Journal of Engineering and Science Application Vol. 2 No. 1 (2025): April
Publisher : Institute Of Advanced Knowledge and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/jesa.v2i1.17

Biodiesel is one of the most promising alternatives to replace conventional fuel products, specifically diesel. The increasing use of biodiesel is currently a focus of many researchers aiming to improve its quality, one of which involves reducing the monoglyceride content. High monoglyceride content can cumulatively affect the performance of diesel engines. Several techniques are used to reduce the monoglyceride content in biodiesel, one of which is maximizing the transesterification reaction. This study focuses on the preparation stage before the transesterification reaction, where the treatment involves variations in the impregnation of sodium methoxide (NaOCH3) in methanol (CH3OH). The impregnation durations tested were 0, 10, 20, 30, and 40 minutes during chemical mixing. The transesterification process was then carried out at reaction temperatures of 62°C and 64°C. The results indicate that the duration of impregnation between sodium methoxide (NaOCH3) and methanol (CH3OH) affects the reduction of the monoglyceride content. The optimal condition identified in this study was an impregnation duration of 20 minutes at a reaction temperature of 62°C, which resulted in a monoglyceride content of 0.3629%.

Increasing The Efficiency Of Plate Heat Exchanger (PHE) Economizer And Cooler Towards The Reduction Of Sterol Glucoside Components As Total Contaminants In Biodiesel Sinaga, Boy Andika; Saragi, Dian Syahputra; Pane, Mangatur Febri V; Darma, Frandika
Indonesian Journal of Innovation Multidisipliner Research Vol. 3 No. 1 (2025): March
Publisher : Institute of Advanced Knowledge and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/ijim.v3i1.349

Sterol Glucoside is a total contaminant component in biodiesel products that can cause problems in biodiesel-fueled engines. Sterol glucoside will cause blockage in the fuel injection so that the distribution of fuel in the combustion chamber is uneven which has an impact on decreasing engine performance. The reduction of sterol glucoside in biodiesel products can be done by a filtration process at a lower temperature because the solubility of sterol glucoside in biodiesel decreases at lower temperatures. This study was conducted at a biodiesel production company located in Duri-Riau with a processing capacity of 25,000 kg/hour with the main raw material RBDPO. The process of reducing sterol glucoside as a total biodiesel contaminant predominantly occurs in the Biodiesel Drying Section where in this section there are equipment such as dryers, plate heat exchangers in the form of heaters, economizers, coolers and filtration. This study considers reducing the temperature of the final biodiesel product by adding plates to the economizer or cooler so that there will be an even better increase in heat transfer efficiency. The results obtained were the addition of 24 plates to the economizer with an increase in heat transfer efficiency of 6.6% and the final product output temperature of 32oC. The addition of 32 plate coolers resulted in an efficiency of 16.3% and a final product temperature of 35oC. The choice of adding plates to the economizer was made because it was more efficient in terms of cost and energy. The results of the analysis showed that the amount of sterol glucoside before the addition of the economizer plate was 18 ppm and after the addition of the economizer plate was 6 ppm or decreased by 66.7%.

THE EFFECT OF MICROMANAGE LEADERSHIP STYLE ON GENERATION Z WORKERS: SELF-EFFICACY AS A MEDIATION OF JOB SATISFACTION Sinaga, Boy Andika
Multidisciplinary Indonesian Center Journal (MICJO) Vol. 2 No. 2 (2025): Vol. 2 No. 2 Edisi April 2025
Publisher : PT. Jurnal Center Indonesia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62567/micjo.v2i2.645

In order to show how a micromanaged leadership style impacts job satisfaction among generation Z employees, this study used self-efficacy as a mediating variable. The study's sample and demographic were Riau Province's Generation Z workers, who were born between 1997 and 2012. The sample size consisted of 203 respondents using a non-probability sampling approach and a questionnaire survey for data collection. The study's conclusions were tested using SmartPLS 3. It featured an outside model, like a validity and reliability test, and an interior model, such a model fit test and a research hypothesis test. The results of the investigation demonstrated the validity and accuracy of each indicator. The hypothesis test results demonstrated that job satisfaction was positively and significantly impacted by self-efficacy, that self-efficacy was positively and significantly impacted by micromanaged leadership style, and that job satisfaction was not significantly impacted by leadership style. Indirect hypothesis testing using self-efficacy as a mediator between job satisfaction and the micromanaged leadership style produced positive and significant results. The results of the study indicate that the relationship between work happiness and micromanagement leadership style can be totally mediated by self-efficacy.

Increasing The Efficiency Of Plate Heat Exchanger (PHE) Economizer And Cooler Towards The Reduction Of Sterol Glucoside Components As Total Contaminants In Biodiesel Sinaga, Boy Andika; Saragi, Dian Syahputra; Pane, Mangatur Febri V; Darma, Frandika
Indonesian Journal of Innovation Multidisipliner Research Vol. 3 No. 1 (2025): March
Publisher : Institute of Advanced Knowledge and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/ijim.v3i1.349

Sterol Glucoside is a total contaminant component in biodiesel products that can cause problems in biodiesel-fueled engines. Sterol glucoside will cause blockage in the fuel injection so that the distribution of fuel in the combustion chamber is uneven which has an impact on decreasing engine performance. The reduction of sterol glucoside in biodiesel products can be done by a filtration process at a lower temperature because the solubility of sterol glucoside in biodiesel decreases at lower temperatures. This study was conducted at a biodiesel production company located in Duri-Riau with a processing capacity of 25,000 kg/hour with the main raw material RBDPO. The process of reducing sterol glucoside as a total biodiesel contaminant predominantly occurs in the Biodiesel Drying Section where in this section there are equipment such as dryers, plate heat exchangers in the form of heaters, economizers, coolers and filtration. This study considers reducing the temperature of the final biodiesel product by adding plates to the economizer or cooler so that there will be an even better increase in heat transfer efficiency. The results obtained were the addition of 24 plates to the economizer with an increase in heat transfer efficiency of 6.6% and the final product output temperature of 32oC. The addition of 32 plate coolers resulted in an efficiency of 16.3% and a final product temperature of 35oC. The choice of adding plates to the economizer was made because it was more efficient in terms of cost and energy. The results of the analysis showed that the amount of sterol glucoside before the addition of the economizer plate was 18 ppm and after the addition of the economizer plate was 6 ppm or decreased by 66.7%.

Enhancement of Organizational Commitment among Management Trainee Graduates: The Influence of Training, Career Development, and Work-Life Balance Mediated by Work Motivation Sinaga, Boy Andika; Utomo, Kabul Wahyu; Rahayu, Heffi Christya
International Journal of Science and Society Vol 6 No 3 (2024): International Journal of Science and Society (IJSOC)
Publisher : GoAcademica Research & Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54783/ijsoc.v6i3.1223

Organizational commitment is a critical variable in reducing employee turnover intentions. Enhancing organizational commitment can be facilitated through factors such as training, career development, work-life balance, and work motivation. The objective of this research is to identify the significant direct impact of training, career development, and work-life balance on organizational commitment and work motivation, as well as to demonstrate the significant indirect impact mediated by work motivation between training, career development, and work-life balance on organizational commitment. This study was conducted on staff employees who are graduates of the Management Trainee program at Company Group X, with a sample size of 202 respondents, utilizing probability sampling techniques. The independent variables in this study include training (X1), career development (X2), and work-life balance (X3), while the mediating variable is work motivation (Z), and the dependent variable is organizational commitment (Y). The research data were analyzed using the Structural Equation Model-Partial Least Square (SEM-PLS) method with Likert scale measurements. The hypothesis testing results indicate a positive and significant influence of training (X1), career development (X2), work-life balance (X3), and work motivation (Z) on organizational commitment (Y), as well as a positive and significant influence of training (X1), career development (X2), and work-life balance (X3) on work motivation (Z). The indirect influence hypothesis test shows that training (X1), career development (X2), and work-life balance (X3) have a positive and significant effect on organizational commitment (Y) mediated by work motivation (Z).

Environmental Impact and Job Satisfaction on Employee Performance with Intervening Variables Work Motivation (Case Study: Refinery-Biodiesel Plant Division of PT. X) Sinaga, Boy Andika
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 5 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i5.1064

This research is intended to find out and analyse the impact of work environment and work satisfaction on employee performance, which is mediated by work motivation. The research was done quantitatively by using the survey method with data analysis technique using SEM PLS. The questionnaire was a data collection instrument and was spread online through Google Forms. It had a sample quota of 83 respondents from millennial-generation employees from a refinery-biodiesel plant in PT. X. The independent variable in this research is work environment (X1) and Job satisfaction (X2); the dependent variable is employee performance (Y) and, with mediating variable, namely work motivation (Z). The result from this research is that work environment (X1) and work satisfaction (X2) do not affect employee performance (Y) because the t-statistic values of 1,237 and 0,068 are successively lesser than 1,96 values with a significance of 0,05. With the mediation available in the form of work motivation (Y), it can be obtained data in which work environment (X1) and work satisfaction (X2) positively affect and signification to employee performance (Y) with t-statistic values by 2,157 and 3,872 successively with the significance lesser than 0,05. Besides that, work motivation (Y) also positively affects and is significant toward employee performance with a t-statistic value of 4,490 and a significance of 0,05. Further research is expected to research other variables that are able to support employees’ increasing performance, such as organisational commitment, work-life balance, and organisational culture.

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