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All Journal Insight: Jurnal Ilmiah Psikologi Biofoodtech : Journal of Bioenergy and Food Technology
Faturochman
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Social Sciences

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Karakterisasi Bioetanol dari Limbah Tandan Kosong Kelapa Sawit Faturochman; Supriyanto, Gani; Oktavianty, Herawati
BIOFOODTECH : Journal of Bioenergy and Food Technology Vol. 3 No. 1 (2024): JUNI
Publisher : Program Studi Teknologi Hasil Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/biofoodtech.v3i1.1087

Abstract

At the moment, Indonesia still relies heavily on fossil fuels to cover its domestic energy demands. However, one of the main causes of the rise in greenhouse gas emissions is the nation's reliance on fossil fuels for energy damage to the environment. An alternate energy source is called bioethanol. The fermentation process of natural ingredients with the help of microorganisms, Bioethanol produced from biomass in this study is palm empty fruit bunches (PEFB) because of the cellulose content of 45.59% which can be converted into second-generation bioethanol. Poses for making bioethanol of PEFB through the process of pretreatment, hydrolysis, fermentation, and distillation. The purpose of this study is to determine the characteristics of bioethanol produced by PEFB waste. Bioethanol characteristic testing refers to test standards determined by SNI 7390:2008/2013, This study produced ethanol content of 4.92% in 6-day fermentation that did not meet the specified standards, methanol content produced 0.4% in 10-day fermentation and had met the specified standards, water content in 4-10 days fermentation produced 25.56%-30.72% did not meet the specified standards, denaturant content in 10-day fermentation produced 9% had met the specified standards. The fermentation of 6 days produced the best condition, obtaining 4.92% ethanol content and 25% moisture content. Still, it did not meet the specific standards of SNI 7390:2008, but met the SNI standards for the methanol content of 0.4%, denaturant level of 11%, acidity of 0.3 mg /L, chloride ion levels of 0.7 mg /L, sulphur content of 0.68 mg /L, and the sap content of 7 mg / l.  
Leadership, psychological climate, and group decision-making performance Moordiningsih; Faturochman
Insight: Jurnal Ilmiah Psikologi Vol. 25 No. 2 (2023): AUGUST 2023
Publisher : Universitas Mercu Buana Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26486/psikologi.v25i2.3370

Abstract

The psychological climate that occurs in a group becomes an important external factor that influences the success of the group's performance. The dimensions of the group's psychological climate include: (1) the leader’s caring; (2) cohesivity; (3) autonomy; and (4) pressure. This study purposes to examine the influence of the group's psychological climate, especially the leader's caring dimension, which can be interpreted as a form of leadership on group performance. This research was conducted with experiments to empirically test the influence of psychological climate on the group decision-making performance. The experimental design used was a post-treatment measurement design with a (2 x 2 x 2 factorial design which consisted of three independent variables with two levels:  leadership: (caring vs uncaring),; autonomy:(autonomous vs non-autonomous),; and pressure: (without time pressure vs with time pressure) using random assignment in group division. The results revealed that the interaction effect of group psychological climate had an effect of 10.3% (F = 3.126; p <0.05; ç2 = 0.103) on group decision-making performance. The influence of the leader's climate, which could also mean the process of leadership in the group gave an effect of 36.7% (F = 15.771; p < 0.01; ç2 = 0.367). on group decision-making performance. This indicated that the group performance was determined more by internal factors within the group, which were the psychological climates of the group, than external factors
Co-Authors Moordiningsih Oktavianty, Herawati Supriyanto, Gani