Publikasi Universitas Mercu Buana
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Use of activated carbon from NiO modified Polyethylene Terephthalate plastic bottle waste to optimize natural gas storage in Adsorbed Natural Gas (ANG) technology
No full textStorage and transportation of natural gas are major challenges in optimizing energy use. To overcome the challenges, Adsorbed Natural Gas (ANG) technology offers a promising alternative for increasing storage capacity at lower pressures. Therefore, this study aims to explore the efficiency of waste polyethylene terephthalate (PET) bottles converted into activated carbon through pre-treatment, carbonization, chemical activation with 4 M KOH, and physical activation using N₂ flow. Modification of activated carbon was carried out using NiO metal impregnation at concentrations of 0.5%, 1%, and 2% to enhance adsorption performance. The results of characterization using iodine number, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) showed that the 2% NiO-impregnated sample had the highest surface area of 997.65 m²/g. Natural gas adsorption and desorption testing showed that this material achieved the maximum storage capacity of 138.9 g/kg at 28°C and 9 bar, with superior performance compared to non-impregnated samples and several previously reported ANG adsorbents. These results showed that combining NiO modification with KOH-activated PET waste improved methane uptake beyond commercial activated carbons and provided an environmentally sustainable solution for plastic waste valorization.
Utilization of Plastic Waste and Rice Husk Ash in Polyethylene-Based Composites for Ceiling Applications
No full textThis study aims to analyze the effect of polyethylene (PE) and rice husk ash (RHA) composition variations on the mechanical properties of recycled composites developed as environmentally friendly ceiling materials. Composite specimens were prepared through a systematic process involving shredding PE plastic waste into 3–5 mm particles, burning rice husks at 600–700 °C followed by sieving through a 200-mesh screen, melting the plastic at 160–170 °C, and mixing with RHA at three composition ratios: 80:20, 70:30, and 60:40 (PE:RHA). The mixtures were molded into 50 × 50 mm specimens and tested in accordance with ASTM D695 for compressive properties and ASTM D792 for density. The results show that composition variation significantly influences compressive strength, elastic modulus, and strain behavior. The 80:20 composition exhibited the highest elasticity, with a compressive strength of 15.59 MPa and an elastic modulus of 463.50 MPa; however, it fractured shortly after exceeding the elastic limit. The 60:40 composition achieved the highest compressive strength of 125 MPa with a strain of 56.6%, but showed brittle behavior due to its very low elastic modulus (7.5 MPa). The 70:30 composition demonstrated the most balanced mechanical performance, with a compressive strength of 61.65 MPa, a strain of 18.20%, and stable ductile behavior. Based on the overall mechanical performance, the 70:30 PE–RHA composition is recommended as the optimal formulation, as it provides the best balance between strength, stiffness, and deformation resistance. This composition is therefore considered the most suitable for non-structural ceiling applications requiring lightweight, mechanically stable, and environmentally sustainable materials
The Impact of Financial Literacy and Financial Inclusion towards the Saving Behavior of the Students
Full text linkObjectives: The purpose of this study was to assess and analyze the impact of Financial Literacy and Financial Inclusion on Saving Behavior using Self-Control as a moderator variable at the Department of Accounting, Faculty of Economics and Business, Private Islamic University in Medan City.Methodology: This study takes an associative method. This survey included 3747 students from the Department of Accounting, Faculty of Economics and Business, Private Islamic University in Medan City. The Slovin algorithm was used to sample 97 students from the Department of Accounting, Faculty of Economics and Business, Private Islamic University in Medan City. Data for this study were gathered through observation and questionnaires. This study's data processing processes used a quantitative approach with statistical analysis using the PLS (Partial Least Square) software tool.Findings: The findings of this study show that financial literacy and financial inclusion have a significant effect on saving behavior and that self-control does not moderate the effect of financial literacy and financial inclusion on saving behavior of Department of Accounting students, Faculty of Economics and Business, Private Islamic University in Medan City.Conclusion: This study examines how financial literacy and financial inclusion affect student saving behavior and self-control as a moderating variable. Students are the right generation to implement financial education because students are agents of change with the hope of bringing change in a better direction than before
Antecedents of Millennial Generation Consumptive Behavior: The Role of Financial Literacy as a Moderation
No full textObjectives: In order to create a model of the Millennial Generation's Consumptive Behavior Antecedents, this study will investigate the aspects that impact students' consumption behavior: The Moderating Function of Financial Literacy.Methodology: This study is fundamental in nature. Since 150 questionnaires were sent, it is anticipated that at least 30 students will return the questionnaire. Partial Least Square (PLS) using Smart PLS 3.0 software, or a variance-based structural equation test, is the analysis technique employed.Finding: Consumer behavior was not partially influenced by lifestyle, self-concept, or peer group, according to the study's findings. There was no moderating effect of financial literacy on the relationship between lifestyle and consumer behavior. Self-concept's influence on consumer behavior was not moderated by financial literacy. There was an impact of financial literacy on students' consumer behavior, and it did not mitigate the influence of peer groups on consumer behavior.Conclusion: This study found that the factors causing consumer behavior in students consist of internal factors including motivational factors and external factors including lifestyle factors, role models or reference groups, self-identification model factors, and family factors
The Role of Employee Regrouping and Expertise Outsourcing as Intervening Variables in the Relationship of the Crisis Period: Lessons Learned from the Suralaya Power Generation Unit
No full textObjectives: This study investigates the effects of crisis management, particularly in the context of the COVID-19 pandemic, on expertise outsourcing and production efficiency at PLTU Suralaya.It explores how the pandemic reshaped employee regrouping and outsourcing practices to maintain operational continuity. While outsourcing specialized expertise is increasingly common, limited empirical evidence exists on its effectiveness during crises. Poorly managed outsourcing can lead to inefficiencies, increased costs, and reduced productivity. The study assesses optimal integration between in-house teams and outsourcing partners, evaluating selection criteria, collaboration effectiveness, and crisis resilience strategies.Methodology: This study's use of the entire population of PT. Indonesia Power Suralaya’s Generation Division ensures data accuracy, eliminates sampling bias, and enhances the reliability of findings. This method enables a thorough examination of internal dynamics, ensuring that the findings are more relevant and tailored to the organization's unique context.Findings: Statistical analysis revealed significant positive effects of the pandemic on employee productivity (path coefficient: 0.320), employee regrouping (0.500), and expertise outsourcing (0.448). Both regrouping and outsourcing positively influenced productivity, highlighting their crucial role in crisis management.Conclusion: To enhance productivity, companies should adopt strategic regrouping and outsourcing processes, ensuring Human Resources professionals are equipped with the right skills, resources, and technology. These findings offer actionable insights for navigating crises and ensuring operational resilience. This research contributes to the understanding of crisis management, outsourcing, and employee productivity, emphasizing their strategic role in sustaining business continuity and efficiency during disruptions
A Model For Creating Business Competitiveness Based On Technosociopreneur Innovation Characterized By State Defense Values
No full textObjectives: This research aims to find a model for creating business competitiveness based on technosociopreneur innovation characterized by state defense values in the new normal era for MSMEs in Surabaya so that they can survive and be sustainable in the new normal era. The challenge of MSMEs in the new normal era is the increase in unemployment and poverty, as well as the global economic downturn, becoming a momentum for adaptation in maintaining business sustainability. MSMEs that succeed in shifting both behavior and economic activity will be able to win. The new normal changes entrepreneurial motives not only profit oriented but also social oriented by using digital technology or known as Technosociopreneur.Methodology: This research uses a mixed method approach which is an approach in research that combines or connects qualitative and quantitative research methods (including philosophical foundations, using approaches and combining both approaches in research).Finding: Technosociopreneurs have a significant role in dealing with technological changes and increasingly fierce business competition. They can combine technological and social elements to create innovations that positively affect business and society. The success of technosociopreneurs can positively impact achieving higher competitiveness in today's digital era.Conclusion IT-based product innovation affects competitiveness mediated by technosociopreneur IT-based process innovation has an effect on competitiveness mediated by technosociopreneur. IT-based organizational innovation affects competitiveness mediated by technosociopreneur 7
INOVASI PEMANFAATAN LIMBAH KULIT BUAH KAKAO SEBAGAI PEWARNA TEKSTIL ALAMI (STUDI KASUS: KAKAO DI KABUPATEN JEMBRANA)
No full textIn the current era, the fashion industry is very developed, high market demand has resulted in mass production of clothing. To prevent the occurrence of fast fashion, world fashion players have now implemented a sustainability system which is done by producing clothes from fabrics made from natural fabric, minimal patterns, and using natural textile dyes. In Indonesia, people now know more about sustainable fashion, one of which is the application of natural textile dyes to fashion products. With abundant natural resources, especially plant species, it can be utilized and has the potential to be developed. One of them is cocoa, cocoa plantations in Indonesia are very developed, especially in Jembrana Regency, Bali, which is the largest cocoa producer in Bali. Cocoa shells are waste that has not been utilized much, in this paper we will present a new innovation in the form of textile dyes from cocoa shell waste, which is expected to help reduce chemical dye pollution in the environment and develop local regional potential in terms of the welfare of local farmers
KAJIAN SEMIOTIKA: REPRESENTASI IDENTITAS KOSMOPOLITAN PADA KONTEN VISUAL FOTOGRAFI DI INSTAGRAM @ANOMALI.BALI
No full textCosmopolitan identity is a modern and open-minded concept along with the evolution of the globalization era. The concept of cosmopolitanism can be applied in various aspects, one of which is in photography as visual content. This study discusses the cosmopolitan identity represented through photography as visual content on Anomali Coffee Bali’s Instagram. Semiotics concepts such as denotation, connotation, and myth are used to understand the signs in the photos. Using qualitative research method to analyze how cosmopolitan identity reflects through visual elements in photography content. This study uses data from literature studies that underpins the theory of research as well as visual data from @anomali.bali on Instagram. This research was conducted to provide an understanding of how a cafe, namely Anomali Coffee in Bali represents a cosmopolitan identity to the audience through their photography content
Assessing critical indicators of supply chain ambidexterity in the 3PL industry: Insights from Indonesia
No full textSupply chain ambidexterity (SCX) is essential strategy for enhancing the competitiveness and business continuity of third-party logistics (3PL) companies in Indonesia. SCX combines the approaches of Supply Chain (SC) agility and SC integration simultaneously to foster business performance. However, research on the factors influencing SCX remains limited. This study integrated the Fuzzy Delphi Method (FDM) to validate 41 proposed indicators and applied Best-Worst Method (BWM) to assess the relative weight and examine the most and least effective indicators for Indonesia’s 3PL industry. The findings revealed 17 effective indicators, with the top 5 being SC sensing, adaptability, process optimization, regulatory compliance, and employee competency development, which were identified as the most significant indicators. These indicators are critical drivers that ensure the successful implementation of SCX strategy. The results offer valuable insights to professionals and policymakers, helping them formulate strategies to strengthen ambidextrous capabilities in the dynamic environment of the 3PL sector, thereby contributing to a more sustainable and competitive logistics landscape in Indonesia
Battery pack remanufacturing decisions considering remanufacturing costs and risk priority number in determining repair or replacement
No full textThe growth of electric vehicles is accompanied by an increase in the number of batteries and battery waste produced, which can ultimately have harmful effects on the environment. As a solution, battery pack remanufacturing has emerged as an effective alternative. However, challenges in the remanufacturing process include determining which battery pack components can be repaired and which require replacement with new components, ensuring that remanufacturing costs remain low while preventing potential future failures. This study aims to develop a remanufacturing decision model that integrates Failure Mode and Effect Analysis (FMEA) with a remanufacturing cost model. The study’s results outline the relationship between failure modes and battery pack components, whereby each failure mode can be classified to determine appropriate repair or replacement actions. While specific actions have been formulated, remanufacturing costs remain the final determinant in the overall battery remanufacturing decision. Based on the analysis, repairs or replacement of new part on 13 components associated with failure modes still render the battery pack suitable for remanufacturing, with a potential cost saving of more than 40% compared to purchasing a new battery pack