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Affandi Harlanda Baros; Muh. Mulyadi; Kurniati Kurniati

Karakter : Jurnal Riset Ilmu Pendidikan Islam 2026 Asosiasi Riset Ilmu Pendidikan Agama dan Filsafat Indonesia

Radicalism and terrorism pose serious threats to national security and social order in Indonesia. In response, the state implements deradicalization policies that emphasize not only repressive measures but also preventive and rehabilitative approaches. Nevertheless, these policies require critical constitutional review to ensure their conformity with the rule of law and the protection of human rights. This study aims to analyze the constitutional foundations, the framework of positive legal regulations, and the challenges in implementing deradicalization policies in Indonesia. The research employs a normative juridical method with statutory and conceptual approaches, using library research on primary, secondary, and tertiary legal materials. The findings indicate that deradicalization policies are supported by a strong constitutional basis under the 1945 Constitution of the Republic of Indonesia, particularly regarding the state’s obligation to protect citizens and guarantee the right to security. However, their implementation remains constrained by regulatory disharmony, weak inter-agency coordination, limited institutional capacity, and socio-cultural challenges within society. Therefore, strengthening institutional synergy, adopting more contextual and humane approaches, and improving regulatory frameworks are essential to ensure the effectiveness and sustainability of deradicalization policies.

Nabila Alfianis Ramadhani; Selvi Yona Sari; Nila Pratiwi

Maeswara : Jurnal Riset Ilmu Manajemen dan Kewirausahaan 2026 Asosiasi Riset Ilmu Manajemen Kewirausahaan dan Bisnis Indonesia

This study aims to analyze the effect of compensation and work environment on work morale with work motivation as an intervening variable at PT. Dofla Jaya Properti Padang. The research sample was determined using a saturated sampling technique. The research method used is a quantitative approach with data analysis using Structural Equation Modeling (SEM) based on Partial Least Square (PLS) version 3.0. The results of the study indicate that compensation has a significant effect on work motivation, compensation has a significant effect on work morale. And the work environment has no effect and is not significant on work motivation, the work environment has no effect and is not significant on work morale. And work motivation is able to mediate the effect of compensation on work morale, work motivation is not able to mediate the effect of the work environment on work morale. The conclusion of this study shows that increasing employee work morale is more effectively done through providing appropriate compensation and increasing work motivation.

Bella Risky; Selvi Yona Sari; Nila Pratiwi

Jurnal Manajemen Bisnis Era Digital 2026 Asosiasi Riset Ilmu Manajemen Kewirausahaan dan Bisnis Indonesia

PT. Hakaaston Sungai Lansek is a company engaged in manufacturing and infrastructure construction. This study aims to analyze the effect of performance appraisal and training on employee performance through work ability as an intervening variable at PT. Hakaaston Sungai Lansek. The population and sample consist of all employees of the company. Data were collected through questionnaires and analyzed using the Structural Equation Modeling–Partial Least Square (SEM-PLS) method with SmartPLS 3.0. The results of the study indicate that performance appraisal does not have a positive and significant effect on work ability, while training has a positive and significant effect on work ability. Furthermore, performance appraisal has a positive and significant effect on employee performance, whereas training does not have a positive and significant effect on employee performance. Work ability is proven to have a significant effect on employee performance. The results of the indirect effect analysis show that work ability is not able to mediate the effect of performance appraisal on employee performance; however, it is able to mediate the effect of training on employee performance. Thus, work ability plays an important role in improving employee performance, particularly through the effective implementation of training.

Ananda Firza Ramadhan; Nisrina Nabila A`bidah; Muhamad Salsabil Fadilah; Heny Indriani; Budi Santoso +2 more

Jurnal Hasil Kegiatan Bersama Masyarakat 2026 Asosiasi Riset Ekonomi dan Akuntansi Indonesia

Tegal Regency is a region in Central Java Province. Geographically, Tegal Regency is situated on a highly advantaged path. This regency, with its capital in Slawi, boasts a diverse range of economic centers spread across several regions. Dominated by small and medium-sized industries, the community can be empowered and participate in improving their well-being through job creation. Small and Medium Industry centers are highly diverse. One area we highlight in this article is the potential of metal and machinery SMEs, which are crucial commodities in the local economy. The metal industry is located around Talang District. The metal and machinery sector holds significant promise due to the potential for increased manufacturing demand, which can boost the local economy. In this study, we used field research and interviews to understand how the SME economy operates. By highlighting this, we hope that the government will focus on SMEs, particularly in the metal and machinery sector, by providing incentives for training and improving product quality and human resources. Based on the above description, local economic growth is highly possible with the support of adequate facilities and infrastructure.

Nur Laila Choiru Nisa; Chaerunnisa Andriani; Nugroho Heri Pramono

Jurnal Ilmiah Ekonomi, Akuntansi, dan Pajak 2026 Asosiasi Riset Ekonomi dan Akuntansi Indonesia

Company value is an important indicator that reflects company performance and investor perceptions of future business prospects and sustainability. Various strategic decisions made by management, such as capital intensity management, investment decisions, and tax aggressiveness policies, play a significant role in shaping company value. This study aims to examine and analyze the effect of capital intensity, investment decisions, and tax aggressiveness on company value through a literature review approach. The method used is a literature review by examining various relevant national and international scientific articles obtained from academic databases such as Google Scholar, Publish or Perish, and SINTA. The results of the study show that capital intensity has a positive effect on company value because it reflects long-term production capacity and operational efficiency. Investment decisions have also been proven to have a positive effect on company value because they signal management's optimism about future growth prospects. Meanwhile, tax aggressiveness can increase company value through tax savings and increased cash flow, but it has the potential to cause reputational and governance risks if done excessively. Overall, the reviewed literature shows that these three variables have an impact on company value, with the caveat that optimal and transparent management is necessary. This study is expected to serve as a reference for further research and as a consideration for company management and investors in making strategic decisions.

Denny Wahyudi; Agus Hermanto

Jurnal Ilmu Komunikasi, Administrasi Publik dan Kebijakan Negara 2026 Asosiasi Peneliti Dan Pengajar Ilmu Sosial Indonesia

In the increasingly tight competition of the soft drink industry, companies need to understand how the advertisements broadcast are able to attract attention, arouse interest, and encourage consumers to make purchases. The purpose of this study is to measure 1) The television advertisement of Nutrisari version of the champion nyegerin on residents of the Graha Indah 2 Pamulang complex. 2) Purchasing decisions on residents of the Graha Indah 2 Pamulang complex. 3) The influence of the television advertisement of Nutrisari version of the champion nyegerin on product purchasing decisions on residents of the Graha Indah 2 Pamulang complex. The theory used in this study is the Marketing Communication Theory. Television Advertisements with dimensions: Head words & sound effect, Music, Seen word, Picture, Color, and Movement, as well as the Purchasing Decision theory with dimensions: Problem Recognition, Information Search, Alternative Evaluation, Purchase Decision, and Post-Purchase Behavior. This study uses a quantitative approach with a survey method with a questionnaire as the data collection instrument. The population in this study were residents of the Graha Indah 2 Pamulang RW 25 complex with characteristics that had been found as many as 123 and the number of samples as many as 94. The sampling technique used probability sampling technique. The results of the study showed that 1) The images presented in Nutrisari advertisements made the audience's attention interesting and got the highest average value of 3.28 from the Picture dimension. 2) In the Purchase Decision, there was the highest value of 3.21 from the Purchase Decision dimension. 3) There was an Influence of Nutrisari Television Advertisement Version of Si Juara Nyegerin on Product Purchase Decisions. t-count was (9.992) > t-table (1.661). The magnitude of the influence was R 0.719 or 71.9% and R Square was 0.517 or 51.7%  

Rahmat Nurjaman; Alienra Davry Nanda Kadun MT

Studi Administrasi Publik dan ilmu Komunikasi 2026 Asosiasi Peneliti Dan Pengajar Ilmu Sosial Indonesia

This study aims to assess the quality of patient care at the Emergency Unit of Sentani City Community Health Center, Jayapura Regency, by examining the experiences and perceptions of patients, their families, and healthcare workers regarding the service. The study used a qualitative approach with a descriptive design. Informants were selected using purposive sampling involving ER patients, their families, and healthcare workers involved in the ER service process at Sentani Community Health Center. Data were collected through in-depth interviews, non-participatory observation, and documentation studies. The data obtained were analyzed qualitatively through the stages of data reduction, data presentation, and conclusion drawing. The research analysis refers to seven dimensions of service quality, namely direct evidence (tangibles), reliability, responsiveness, assurance, empathy, service accessibility, and service systems and flows. The results of the study showed that service quality at the Sentani Community Health Center ER was in the fairly good category, especially the dimensions of empathy, reliability, and responsiveness of healthcare workers. Healthcare workers were friendly, responsive, and provided fair services without discriminating against patient backgrounds. However, a number of obstacles are still found that affect the optimization of services, including limited facilities and infrastructure, the number of health workers that is not commensurate with the service load, patient waiting times in certain conditions, the operating hours of the Emergency Room that are not yet 24 hours, and the low understanding of some patients regarding the applicable service system and flow.

Alam Anbari; Dyah Ersita Yustanti

Majelis : Jurnal Hukum Indonesia 2026 Asosiasi Peneliti dan Pengajar Ilmu Hukum Indonesia

The phenomenon of homelessness and begging in public places remains a complex social problem and impacts public order and legal norms. The main problem in this study is how the criminal law is applied to homelessness and begging in public places, and how the provisions compare in the old Criminal Code and the new Criminal Code based on Law Number 1 of 2023. This study uses a normative juridical method with a statutory approach and literature study. In the old Criminal Code, begging is regulated in Article 504 which threatens imprisonment for anyone who begs in public. Meanwhile, the new Criminal Code regulates similar acts in Article 425 which no longer uses the term "begging" explicitly, but regulates the prohibition against the repeated exploitation of certain activities in public places that disturb the community. The research results show that, despite substantial continuity, the new Criminal Code tends to use a more humanistic approach and emphasizes social rehabilitation. Law enforcement against vagrants and beggars still faces various obstacles, such as low public reporting, limited oversight by authorities, and a lack of rehabilitation facilities. Therefore, the main conclusion of this research is that a repressive approach alone is insufficiently effective. An integrated legal strategy is needed, combining penal and non-penal approaches with the active involvement of the government, the community, and social institutions.

Muthia Zahra Qurraatha Aini

Federalisme : Jurnal Kajian Hukum dan Ilmu Komunikasi 2026 Asosiasi Peneliti dan Pengajar Ilmu Hukum Indonesia

The digitalization of payment systems constitutes an integral part of economic digital transformation, driving a shift in transactions from cash-based to technology-based cashless payments. In Indonesia, this digitalization is manifested through the development of the Quick Response Code Indonesian Standard (QRIS) by Bank Indonesia as a national standard for QR code–based payments. Along with its development, QRIS has not only been used in domestic transactions but has also been implemented in cross-border transactions through intercountry payment system cooperation, particularly within the ASEAN region. However, the rapid expansion of QRIS has not been accompanied by comprehensive and structured legal regulation. This study aims to analyze the structure and hierarchy of QRIS regulation within Indonesia’s payment system as well as the forms of legal protection for consumers in cross-border QRIS transactions. The research employs a normative juridical method using statutory, historical, and conceptual approaches. The findings indicate that QRIS does not yet have a Bank Indonesia Regulation as a primary regulatory framework and is regulated solely through a Regulation of Members of the Board of Governors, which hierarchically functions as an implementing regulation. Consequently, QRIS regulation refers to several different Bank Indonesia Regulations, resulting in regulatory fragmentation. This condition has implications for legal uncertainty and the suboptimal legal protection of consumers in cross-border QRIS transactions.

I Gede Adhi Suwarmas Kawiswara

Federalisme : Jurnal Kajian Hukum dan Ilmu Komunikasi 2026 Asosiasi Peneliti dan Pengajar Ilmu Hukum Indonesia

The industrial revolution 4.0 has brought rapid advances in technology, one of which is artificial intelligence (AI). AI has the ability to imitate the human thought and action process in solving various problems. However, the implementation of AI raises legal problems related to responsibility for the negative impacts caused, such as cybercrime, information manipulation, privacy violations, and misuse of technology. Indonesia, as a country based on law, is faced with the challenge of regulating AI to be in line with technological developments. Currently, legal regulations in Indonesia do not specifically regulate the legal responsibility of AI. Positive laws, such as the Civil Code and the ITE Law, can be used interpretively, but are not enough to address the complexity of AI. Legal responsibility related to AI is debatable, whether it is imposed on the developer, owner, or user of AI. In addition, AI does not have a “mens rea” in criminal law, so that unlawful acts are more relevant to be imposed on the responsible human. To overcome this problem, legal reform or the creation of special regulations that comprehensively regulate AI are needed. These regulations must include privacy protection, data security, and criminal and civil liability due to the use of AI. With a clear legal framework, the risk of AI misuse can be minimized and its use can be optimized for the welfare of society.

Keysa Astiara; Hartiwiningsih Hartiwiningsih; Riska Andi Fitriono

Federalisme : Jurnal Kajian Hukum dan Ilmu Komunikasi 2026 Asosiasi Peneliti dan Pengajar Ilmu Hukum Indonesia

This research aims to analyze the criminal liability of perpetrators of arson and destruction of public facilities during demonstrations in Indonesia, as well as to examine the enforcement of criminal law against these crimes based on applicable positive law. However, in practice, demonstrations are often accompanied by anarchic actions in the form of arson and destruction of public facilities that harm the public interest and disrupt public order. The urgency of this research lies in the need to ensure that criminal liability and criminal law enforcement for acts of arson and destruction of public facilities are carried out individually and proportionally in accordance with the provisions of the old Criminal Code and the National Criminal Code, in order to prevent the general application of criminal law to participants in demonstrations. The results of the first study indicate that criminal liability for perpetrators of arson and destruction of public facilities during demonstrations has basically been regulated in the old Criminal Code and then updated in the National Criminal Code, especially regarding the crimes of arson and destruction of property. While the second enforcement of criminal law against these acts requires proportional and individual application, even though it is carried out in the context of collective mass action.

I Made Maswinartha; I Nyoman Putu Budiartha; Ni Komang Arini Styawati

International Journal of Sociology and Law 2026 Asosiasi Penelitian dan Pengajar Ilmu Hukum Indonesia

The growth of the digital economy in Indonesia has positioned Foreign Venture Capital Companies (FVCCs) as a fundamental pillar within the startup financing ecosystem. However, the legal landscape has undergone a significant transformation with the enactment of Law Number 4 of 2023 on the Development and Strengthening of the Financial Sector (P2SK Law). This regulation mandates that all financial services business actors, including foreign entities, obtain business licenses from the Financial Services Authority (Otoritas Jasa Keuangan/OJK). This study aims to analyze the legal implications of this licensing requirement on business certainty for foreign investors and to examine the normative inconsistencies between the Investment Law and the P2SK Law. This research employs a normative juridical method with a statutory approach and a conceptual approach. The findings reveal the existence of normative ambiguity (vagueness of norms) concerning the operational status of FVCCs utilizing offshore structures during the regulatory transition period, which is set to expire in January 2026. Such legal uncertainty has the potential to hinder the inflow of Foreign Direct Investment (FDI) if not promptly addressed through adaptive implementing regulations, such as the optimization of regulations governing Foreign Representative Offices. On the other hand, the licensing obligation enhances legal certainty by providing preventive legal protection for Business Partner Companies through contract standardization and integrated supervision. In conclusion, this study recommends cross-sectoral regulatory harmonization and the issuance of clear technical guidelines to ensure a balanced approach between prudential supervision and investment facilitation.

Abdul Hakim; Tutik Hamidah; Ali Hamdan

International Journal of Sociology and Law 2026 Asosiasi Penelitian dan Pengajar Ilmu Hukum Indonesia

This research is based on the shortage of functional penghulu officers, which has become a serious issue for the government, particularly the Ministry of Religious Affairs of Indonesia. This condition can affect the quality of services in marriage registration, family guidance, and the provision of legal certainty to the community. To overcome the emergency of penghulu personnel, it is necessary to propose that the position of penghulu also be granted equal access to women, whereas until now the position of penghulu has been dominated only by men. Therefore, this research aims to conduct a comprehensive study on the provisions regarding the opportunities and problems of female penghulu within Indonesia’s civil law system, in which civil law is the official positive legal umbrella governing penghulu affairs. This research is normative legal research employing a statutory approach and a conceptual approach. Meanwhile, the primary legal materials of this research consist of various laws and regulations directly related to penghulu affairs. The results of this research indicate that the opportunities for female penghulu within the civil law system are very open, constitutionally valid, and not subject to any normative prohibition. The problems arise when female penghulu are requested to act as guardians appointed by the court (wali hakim) or entrusted with the delegated guardianship of marriage (taukil wali). This is because, under Indonesia’s civil law, a wali hakim or a person receiving taukil wali is required to be male. In addition, another problem is the existence of a specific requirement to be male that must be fulfilled in the recruitment of penghulu personnel as stated in the Announcement Letter on the Recruitment of Candidates for Civil Servants of the Ministry of Religious Affairs.  

Mailin Mailin; Azli Azumar Nasution; Mhd. Adjie Permana; Intan Fahzirah; Ahmad Habibi Daulay +2 more

Jurnal Pengabdian Kepada Masyarakat 2026 Pusat Riset dan Inovasi Nasional

Local food innovation is not only focused on product development but also requires effective communication strategies to build positive perceptions and enhance market competitiveness. This study aims to analyze the implementation of innovation communication strategies by micro, small, and medium enterprises (MSMEs) in developing papaya-based chili chips as a flagship product in Nagori Karang Anyar, Gunung Maligas District, Simalungun Regency. The research employs a descriptive qualitative approach, focusing on the product innovation process, marketing communication patterns, and efforts to build product image amid competition in the local food industry. The findings indicate that innovation communication strategies play a crucial role in creating product differentiation through narratives of unique taste, utilization of local raw materials, and promotional strategies combining traditional methods and digital media. Papaya chili chips are positioned as a product that blends distinctive local flavors with a modern touch, attracting consumer interest and increasing the added value of papaya as a local commodity. This study emphasizes that the success of local food innovation depends not only on product quality but also on the ability of MSMEs to manage adaptive and persuasive communication strategies.

I Putu Nanda Yoga Mayura; I Ketut Garwa; I Gede Yudarta

Jurnal Riset Rumpun Seni, Desain dan Media 2026 Pusat Riset dan Inovasi Nasional

Citra Jalatarangga is a karawitan composition that is contextually inspired by the duality of freshwater and seawater springs found at Geger Beach. The duality embodied in this idea serves as the fundamental concept and is subsequently implemented in the formulation and structuring of Balinese karawitan performance techniques. This paper discusses the process of creating the work, the formal structure of the composition, and the aesthetic values contained within it. The karawitan composition Citra Jalatarangga employs three theoretical frameworks as analytical tools to describe the duality of the different water sources. Transformation theory is used to determine the form and structure of the composition, creativity theory serves as a reference in the creative process, and postmodern aesthetic theory functions as a guideline for applying aesthetic nuances to the work. The creative method used in the creation of Citra Jalatarangga is the Panca Sthiti Ngawi Sani method, which consists of five stages: the inspiration stage (ngawirasa), the exploration stage (ngawacak), the conception stage (ngarencana), the execution stage (ngawangun), and the production stage (ngebah). This work utilizes several instruments from the Gamelan Semara Dana as its expressive medium and is structured into three sections, each representing the duality of the water sources through different formulations and performance techniques. In addition, instrument arrangement, costume design, and lighting design also function as supporting aspects in the presentation of the work, which was staged at Wantilan Banjar Sawangan, Desa Adat Peminge.

Wida H. Saisali; Nurlia Djafar; Riana Diah Sitharesmi

Jurnal Riset Rumpun Seni, Desain dan Media 2026 Pusat Riset dan Inovasi Nasional

Balatindak is a traditional art that has existed since the time of the Banggai Kingdom. In its development, Balatindak presented in the regions, and each region has its own characteristics in its performance. In Banggai Laut Regency, Bangkurung District, Balatindak is performed upon the arrival of visiting distinguished guests, and on Eid al-Fitr. In Lantibung village, Balatindak is not only entertainment but also as part of the pakanggi umat ceremony carried out by the community. This study aims to describe the form of Balatindak presentation in the process of implementing pakanggi umat. This study uses a descriptive qualitative research method. In collecting data, researchers conducted interviews, and observations of the implementation of pakanggi umat, as well as documenting it in the form of photos and videos. The results of the study found that Balatindak was performed four during the pakanggi umat. The first was at the beginning of the procession performed by two men (talapu), then in the middle was presented by several male and female talapu. The costumes worn by male talakus are daily clothes consisting of long or short-sleeved shirts, black trousers, and white headbands. Meanwhile, female talapu wear long-sleeved shirts, sarongs, scarves, and white head coverings. The Balatindak is unique with movements dominated by rapid foot stomping, and both arms play props depicting machetes and shields. Balatindak is accompanied by batong music. The venue is the Bangkurung traditional house called Kusali. The Balatindak performed in this tradition classified as a ritual performing art.

Peter Peter; Herlina Herlina; Amisiska Natalia Saragi

International Journal of Management Science and Entrepreneurship 2026 International Forum of Researchers and Lecturers

Financial management plays a crucial role in individual financial planning, particularly in the context of increasingly unstable macroeconomic conditions. Effective financial management behavior enables individuals to allocate resources wisely, manage risks, and achieve financial sustainability in the long term. Therefore, identifying the key factors that influence financial management behavior is essential. This study aims to analyze the effect of income and financial literacy on financial management behavior (FMB). The population of this study consists of teachers and administrative employees aged 24 to 60 years from two educational institutions located in Bandar Lampung and Metro. Using a snowball sampling technique, a total of 93 respondents were obtained. Data were collected through an online survey questionnaire designed to measure income level, financial literacy, and financial management behavior. The collected data were then analyzed using a multiple regression model to test the proposed hypotheses. The results of the analysis indicate that both income and financial literacy have a positive and significant effect on financial management behavior. Individuals with higher income levels tend to demonstrate better financial management practices, while greater financial literacy enhances individuals’ ability to plan, control, and make informed financial decisions. These findings highlight the importance of improving financial literacy and income management skills to strengthen financial management behavior, particularly among educators and educational staff.

Ni Kadek Dewi Iriani Putri; Harianto Respati; Mokhammad Natsir

International Journal of Management Science and Entrepreneurship 2026 International Forum of Researchers and Lecturers

This study aims to analyze how work skills and work flexibility affect work productivity through job satisfaction as an intervention variable among Gojek partners in the Malang City area. This study uses a quantitative methodology with a causality design. Using simple random sampling, questionnaires were sent to 120 selected Gojek partners to obtain initial data. A Structural Equation Modeling (SEM) based on linear regression analysis was used to analyze the data. This was done using the SPSS program. The results of the study indicate that work skills and work flexibility positively and significantly affect the productivity of Gojek partners. In addition, job skills and work flexibility also have a positive and significant effect on job satisfaction. Job satisfaction is also proven to have a positive and significant effect on work productivity, and also functions as a mediating variable in the relationship between job skills and work flexibility and work productivity. The results show that job satisfaction can increase with job skills and a more flexible work environment. Ultimately, this will have an impact on increasing the productivity of Gojek partners. It is hoped that this research will help digital platform managers create more flexible and sustainable HR management strategies.

Muhamad Haris Maknun

Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer 2026 Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Industrial visits are widely recognized as an experiential learning approach that bridges the gap between theoretical knowledge and real industrial practices in engineering education. This study aims to examine the relationship between industrial visits and the improvement of production system understanding and critical thinking skills among students of the Faculty of Industrial Technology at Universitas Nahdlatul Ulama Al-Ghazali (UNUGHA) Cilacap. A quantitative approach with a one-group pretest–posttest design was employed. The participants consisted of 43 industrial engineering students who took part in industrial visits to PT Dirgantara Indonesia and the National Research and Innovation Agency (BRIN) in Bandung. Data were collected using Likert-scale questionnaires and analyzed through Paired Sample t-Test. The results reveal a significant increase in students’ understanding of production systems, with mean scores rising from 64.23 (pretest) to 81.47 (posttest) (p < 0.05). Similarly, critical thinking skills showed a significant improvement, increasing from a mean score of 63.05 to 83.12 (p < 0.05). These findings demonstrate that industrial visits have a substantial positive impact on enhancing students’ academic competencies. This study highlights the importance of systematically integrating industrial visits into the industrial engineering curriculum to strengthen learning outcomes and improve graduates’ readiness for industrial challenges.

Muhammad Ma’arif Al Azizy; Arif Rahman Saleh; Raka Mahendra Sulistyo

Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer 2026 Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Coffee husk is an agro-industrial waste with significant potential to be utilized as a renewable energy source through the fast pyrolysis process. This study aims to analyze and optimize gas production from the fast pyrolysis of coffee husk biomass using a screw reactor through single-particle-based Computational Fluid Dynamics (CFD) simulations. The simulations were conducted by varying the operating temperature at 500°C, 600°C, and 700°C to examine pressure distribution, heat transfer, particle temperature, and the formation of pyrolysis products, namely bio-oil, biogas, and biochar. The modeling was performed using COMSOL Multiphysics 6.2 with a numerical approach to represent thermal phenomena and biomass decomposition reactions during the pyrolysis process. The simulation results indicate that increasing temperature significantly affects the rate of heat transfer and the temperature distribution of coffee husk particles. At 600°C, heat transfer and temperature distribution are more uniform compared to 500°C, although heating at the particle core is not yet fully optimal. The pressure distribution shows a stable flow of pyrolysis gas from the bottom to the top of the reactor. In terms of products, increasing temperature leads to a reduction in biochar and bio-oil formation due to the occurrence of secondary reactions, while biogas production increases. The highest gas production is achieved at 700°C, indicating the most optimal condition for maximizing gas yield from fast pyrolysis. Therefore, single-particle-based CFD simulation can be used as an effective tool to understand pyrolysis mechanisms and optimize process parameters in a screw reactor.