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All Journal Eksergi: Chemical Engineering Journal Journal of Research and Technology Islam Universalia : International Journal of Islamic Studies and Social Sciences Jurnal Pengabdian dan Peningkatan Mutu Masyarakat (JANAYU) International Journal of Health, Economics, and Social Sciences (IJHESS) International Journal of Sustainable Law
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Pendampingan Pengajuan Sertifikasi Halal Pelaku UMKM Makanan-Minuman Rachmaniah, Orchidea; Yeni Rahmawati; Wahyu Meka; Fahmi; Nuniek Hendrianie; Ali Altway; Susianto
Jurnal Pengabdian dan Peningkatan Mutu Masyarakat (Janayu) Vol. 5 No. 1 (2024): Jurnal Pengabdian dan Peningkatan Mutu Masyarakat
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/janayu.v5i1.25267

Abstract

Purpose – This community service activity aims to provide assistances for Small-Medium Enterprises (SMEs), specially for food and beverage field, applying halal certification via Halal self-declared (SEHATI) Program. Design/methodology/approach – This program is conducted by recruting and training students as certified halal companion (PPH) by BPJPH. This were done by collaboration between Halal Center Studies of the Institut Teknologi Sepuluh Nopember (PKH-ITS) and ITS Techno Science. The SMEs training for Halal Process held around August 2023. Afterward, all the PPH will be accompanied and assisted the SMEs for applying the halal certificate via SIHALAL system; including preparing the SJPH, entry all the information, submitting the document, verification and validation as well as done the revision untill the halal certificate was finally issued. Findings – The SEHATI program has been started since 2021 and the quota continues to increase every year. However, not every SMEs known this information. It is mandatory for food and beverage, slaughter services, and slaughter products at 17th October 2024 should be halal certified. Therefore, PKH-ITS together with PPH helps and assists SMEs in applying a halal certification through a community service program at 2022. The upgraded facilities of SIHALAL’s website (version 2022) make it more user friendly. The 15 SMEs have certified via the SEHATI22 program with PKH assistances. Originality/value – Though the SEHATI Program is announced by the goverment at 2021, this relatively not well known by the SMEs as the subject of the halal certification. Hence, third party such PKH-ITS need to present for accompanying and assisting the SMEs. The SIHALAL system is used for submitting the application of halal certification. Therefore, highly technology adapted of the PPH are required, for completely assisting the SMEs. Hence, the presence of the PPH in this process is mandatory and vital; increasing the succesibility of the SEHATI program.
PENGARUH KONSENTRASI SURFAKTAN DAN KECEPATAN PUTAR PENGADUK TERHADAP PROSES PEMISAHAN BITUMEN DARI ASBUTON Nora Amelia Novitrie; Susianto; Ali Altway
Journal of Research and Technology Vol. 2 No. 2 (2016): JRT Volume 2 No 2 Des 2016
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (65.758 KB) | DOI: 10.55732/jrt.v2i2.220

Abstract

Asbuton is a rock contain of the bitumen. Asbuton can be used as road construction alternatives after extracting bitumen from the mineral. A method for separating bitumen is separation process using hot water medium. The process was carried out in a stirred tank, 200 grams of asbuton was mixed with diesel oil and added by hot chemical solution (surfactant) in the digestion tank. The separation process in the extractor was made at 900C and time set was 30 minutes. Surfactan concentration and the speed of stirrer were set according to the variable. After the process completed, the mixture was moved into a beaker glass and 500 ml hot water was added. The mixture of diesel oil and bitumen will float in the surface then the density will be measured to determine the bitumen concentration. It can be concluded that concentration of surfactant solution and speed of stirrer have the significant results. The highest recovery percentage of bitumen is 81,99 %. Keywords: Asbuton, Hot water, Speed of stirrer, Surfactant.
STUDI EKSPERIMENTAL FALLING FILM EVAPORATOR PADA EVAPORASI NIRA KENTAL Fitri, Medya Ayunda; Suhadi; Altway, Ali; Susianto
Journal of Research and Technology Vol. 2 No. 1 (2016): JRT Volume 2 No 1 Jun 2016
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v2i1.261

Abstract

Falling film evaporator is a constructed equipment for concentrating dilute solution that are sensitive to heat flowing form a thin film. This research aims to study the evaporation of cane juice concentrated with air flow on falling film evaporator and knowing evaporation rate occured in falling film evaporator used. In the process, cane juice from plant pumped to the falling film evaporator that used in this experiment. This research used concentrated cane juice and air flow rate for variables of this experiment. Cane juice flow from top of evaporator through distributor to form thin film and air flow from the bottom of evaporator. After that, temperatur of pipe wall, inlet and outlet temperature of cane juice and air were measured. This experiment concluded that the highest concentration of outlet solution is 59 brix for liquid flow rate 154 l/h and air flow rate 10 m3/h, and the other hand inlet solution concentration 51 brix. Optimum evaporation rate is 35 kg/m2.h for 51 brix and air flow rate 10 m3/h. Keywords: Concentrated cane juice, Evaporator, Evaporation rate, Falling film.
Democracy, Elections, And Populism in Indonesia from The Perspective of Friedrich Nietzsche's Existentialism William Wihardjo; Supriyadi; Susianto
International Journal of Health, Economics, and Social Sciences (IJHESS) Vol. 7 No. 1: January 2025
Publisher : Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56338/ijhess.v7i1.6950

Abstract

Article history: This research aims to analyze how populism weakens democratic practices in Indonesia and formulate solutions to keep democracy healthy. With Friedrich Nietzsche's existentialism perspective, this research highlights the importance of individual freedom and responsibility in choosing qualified leaders. The research uses a legal method with a legislative and philosophical approach. The results show that Indonesian democracy, which is synonymous with the division of power between the executive, legislative, and judicial branches, is often distorted by the influence of populism. Elections held every five years to elect people's representatives and executive leaders at various levels are often used by political elites for their interests by exploiting people's emotions through rhetoric and identity politics. This condition is rooted in the criteria for nominating leaders in Law No. 7/2017, which opens space for the emergence of populism and obscures the purpose of democracy “of the people, by the people, and for the people”. To overcome this, the research recommends revising the regulation by adding competency criteria based on the State Civil Apparatus (ASN) merit system for prospective executive leaders. This strategy is a practical implementation of existentialism in legal politics to maintain the quality of democracy while strengthening political education for the community.
Upaya Meningkatkan Keterampilan Motorik Halus Anak Melalui Media Pengolahan Barang Bekas Pada Anak Usia Dini di RA Al-Muhajirin Medan Deli Grahmayanuri, Novria; Aisyah; Nasution, Fadhilah Syam; Susianto; Daulay, Dahraini Hanum; Yusriani, Nida; Habibatul Islamiyah, Ummi
Islam Universalia: International Journal of Islamic Studies and Social Sciences Vol 6 No 3 (2025): Islam Universalia
Publisher : Cyber Media Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to improve fine motor skills in early childhood through recycled material utilization at RA Al-Muhajirin, Medan Deli. The research employs a quantitative approach with a pre-experimental one-group pre-test and post-test design. The subjects include 24 children aged 5-6 years. Data were collected using observation sheets covering fine motor skill indicators such as cutting, gluing, and decorating abilities. The results indicate a significant improvement in children's fine motor skills, evidenced by an average pre-test score of 6.6, which increased to 15.4 in the post-test. Data analysis using the N-Gain Score method yielded an effectiveness rate of 65.7%, categorized as moderately effective. This research demonstrates that recycling-based activities can serve as an innovative teaching method to enhance fine motor skills in early childhood while instilling environmental awareness values. Abstrak Penelitian ini bertujuan untuk mengembangkan keterampilan motorik halus pada anak usia dini melalui pemanfaatan barang bekas di RA Al-Muhajirin, Medan Deli. Metode yang digunakan adalah pendekatan kuantitatif dengan desain pre-experimental one-group pre-test dan post-test. Subjek penelitian terdiri dari 24 anak berusia 5-6 tahun. Data dikumpulkan melalui lembar observasi yang mencakup indikator keterampilan motorik halus, seperti menggunting, menempel, dan menghias. Hasil penelitian menunjukkan adanya peningkatan yang signifikan dalam keterampilan motorik halus anak, yang dibuktikan dengan peningkatan nilai rata-rata dari pre-test sebesar 6,6 menjadi 15,4 pada post-test. Analisis data menggunakan metode N-Gain Score menunjukkan tingkat efektivitas sebesar 65,7%, yang tergolong dalam kategori cukup efektif. Penelitian ini membuktikan bahwa aktivitas berbasis daur ulang dapat menjadi metode pembelajaran inovatif yang tidak hanya mendukung perkembangan motorik halus anak usia dini, tetapi juga menanamkan nilai kepedulian terhadap lingkungan.
Freedom of Speech in the Context of Constitutional Law: Maintaining the Balance Between Freedom and Public Order Susianto; Nahuddin, Yusuf Eko; Nurita, Riski Febria
International Journal of Sustainable Law Vol. 2 No. 1 (2025)
Publisher : Universitas Kristen Cipta Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71131/jjbx9540

Abstract

Freedom of speech is a fundamental human right in democratic systems, including in Indonesia, which is guaranteed by the 1945 Constitution of the Republic of Indonesia. However, despite being protected by the constitution, this freedom is not absolute and needs to be limited in certain cases to maintain public order, national security, and the rights of others. This study aims to analyze how freedom of speech is regulated in Indonesia's constitutional law, and how the state maintains the balance between individual freedom and public order. Using a normative research method, this study examines the legislation related to freedom of speech, such as the 1945 Constitution, the Electronic Information and Transactions Law (UU ITE), and relevant Constitutional Court decisions. Limitations on freedom of speech in Indonesia are regulated based on international legal principles that recognize freedom of expression, with the caveat that this right can be limited for the sake of public interest, morality, and national security. The findings of this study indicate that while freedom of speech is a crucial right in democracy, the state has the authority to limit this freedom under certain conditions. These limitations must be applied proportionally and in accordance with the principles of a democratic rule of law. The state plays a vital role in creating a balance between freedom of speech and public order, ensuring that this freedom can be maximized without undermining the social and political stability of the country.
Modelling Urea and Creatinine Concentration Distribution in Hollow Fiber Membranes for Hemodialysis Applications Fauziah, Melinda Nur; Nurkhamidah, Siti; Taufany, Fadlilatul; Altway, Ali; Susianto; Rahmawati, Yeni
Eksergi Vol 22 No 2 (2025)
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i2.14515

Abstract

Humans are dynamic creatures who continue to follow developments over time. This development also has a big impact on changes in habits and has an impact on the health of everyone, which needs special attention in this era of globalization. One of the treatments for kidney failure patients is kidney function replacement therapy, namely haemodialysis. Haemodialysis therapy is a high technology to replace the function of the kidneys in removing metabolic waste (air, sodium, potassium, hydrogen, urea, creatinine, uric acid and other substances) through a semi-permeable membrane as a separator for blood and dialysate fluid in an artificial kidney (dialyzer). where the processes of diffusion, osmosis, and ultrafiltration occur. In this study, a hollow fiber type dialyzer was used which consisting of three main components: the shell (which directs dialysate flow), the porous membrane, and the tube (which carries blood). In general, this research will be carried out theoretically by developing a mathematical model of mass transfer in hollow fiber membranes in the haemodialysis process to study the distribution of urea and creatinine concentrations in the tube, membrane, and shell axial and radial section, the effect of pore area of membrane on urea and creatinine clearance, and the influence of dialysate flowrate on urea and creatinine clearance. The mathematical modeling successfully illustrates the distribution of urea and creatinine concentrations within the hollow fiber membrane both axially and radially, with a concentration decrease from blood to dialysate, influenced by diffusion and convection mechanisms. Simulation results indicate that increasing dialysate flowrate enhances haemodialysis efficiency, but its effect diminishes after reaching a certain threshold. Meanwhile, increasing the membrane surface area from 1.3 m² to 1.8 m² results in only a slight reduction in the urea concentration from 16.67 mol/m³ to 16.62 mol/m³ and creatinine from 8.85 mol/m³ to 8.83 mol/m³, demonstrating that membrane surface area has a smaller impact.
Comparative Analysis of CO₂ Content in Biogas and Synthetic Gas Using Chittick Titration Validated by Gas Chromatography Pambudi, Alfian Wisnu; Rahmawati, Yeni; Taufany, Fadlilatul; Altway, Ali; Susianto
Eksergi Vol 22 No 2 (2025)
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i2.14809

Abstract

This study aimed to validate the Chittick titration method for measuring carbon dioxide (CO2) content using gas chromatography (GC) as the reference method. Two types of gas samples were analyzed: synthetic CO2/N2 gas with a theoretical composition of 40:60 and biogas produced by anaerobic fermentation. Analyses were conducted in parallel using both methods to compare CO2 measurements. For synthetic gas, the Chittick titration recorded an average CO2 content of 39.11%, whereas GC recorded 40.52%. For biogas, Chittick titration produced 30.16%, whereas GC measured 31.40%. The differences between the methods were 0.81% for synthetic gas and 1.55% for biogas, with relative errors of 2.00% and 3.45%, respectively. The t-test results showed statistically significant differences (p < 0.05) between the methods for both gas types. However, the observed deviations remained within practically acceptable limits for small-scale laboratory applications. These findings suggest that Chittick titration is a practical and cost-effective alternative for estimating CO2 content, particularly in laboratories with limited access to gas chromatography equipment. This study is expected to serve as a useful reference for educational institutions and small laboratories that are seeking to develop simple gas analysis methods with adequate validity.
Mechanistic Modeling of a Spiral-Wound Nanofiltration Module using DSPM-DE for High-Purity Salt Recovery from Desalination Brine Sugianto, Mohamad; Altway, Ali; Susianto
Eksergi Vol 23 No 1
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v23i1.15947

Abstract

Rejected brine is a concentrated NaCl stream whose elevated Ca²⁺, Mg²⁺, and SO₄²⁻ depress the quality of industrial salt. We built a mechanistic model of a spiral-wound KeenSen NF1-4040F nanofiltration (NF) element using the Donnan–Steric Pore Model with Dielectric Exclusion coupled to the Extended Nernst–Planck equations. Radial transport is coupled to axial mass balances and solved at steady, isothermal conditions over  bar and . Water flux  increases almost linearly with ; along the module  falls and  rises nearly linearly. Recovery increases with  but decreases with . Flux decomposition shows cations are convection-dominated, whereas anions carry larger shares of diffusion and electromigration. Predicted end-of-module rejections are ≈ 99.0-99.3%, ≈ 97.6-98.1%, ≈ 96.0-96.6%, ≈ 88-89%, and ≈ 74-75%, confirming divalent ≫ monovalent selectivity. Linking to product quality, the simulated permeate at  bar and  yields a conservative dry-salt purity of ~96.9 wt% NaCl when all non-halite salts co-precipitate. Under halite-first crystallization with a gypsum pre-step and bittern purge, only a minor fraction co-crystallizes, giving ≥98.5 wt% (≈99.5 wt% for a 20% co-crystallization assumption). Thus, operating at moderate-to-high  with moderate cross-flow not only maximizes recovery and divalent rejection but also supplies a permeate that can be crystallized to SNI-compliant high-purity salt.
Co-Authors Aisyah Ali Altway Daulay, Dahraini Hanum Fadlilatul Taufany Fahmi Fauziah, Melinda Nur Grahmayanuri, Novria Habibatul Islamiyah, Ummi Medya Ayunda Fitri Nasution, Fadhilah Syam Nora Amelia Novitrie Nuniek Hendrianie Pambudi, Alfian Wisnu Rachmaniah, Orchidea Riski Febria Nurita, Riski Febria Siti Nurkhamidah Sugianto, Mohamad Suhadi Supriyadi Wahyu Meka William Wihardjo Yeni Rahmawati Yeni Rahmawati, Yeni Yusriani, Nida Yusuf Eko Nahuddin