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All Journal Jurnal Pendidikan dan Pembelajaran Catalyx : Journal of Process Chemistry and Technology
Ibtisam Ibtisam
Universitas Negeri Surabaya
Chemistry Education Languange, Linguistic, Communication & Media Mathematics Other

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Pengaruh Literasi Digital, Motivasi Berprestasi, Kolaborasi Terhadap Hasil Belajar Kreatif Kewirausahaan SMKN 1 Kediri Masmui Masmui; Soeparno Soeparno; Gde Agus Yudha Prawira Adistana; Ibtisam Ibtisam; Achmad Imam Agung
DIAJAR: Jurnal Pendidikan dan Pembelajaran Vol. 5 No. 3 (2026): Juli 2026
Publisher : Yayasan Pendidikan Penelitian Pengabdian Algero

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54259/diajar.v5i3.7844

Abstract

The rapid development of technology in the digital era demands a transformation in education, where students are expected to not only be proficient in using digital devices but also possess structured reasoning skills to optimize their academic achievements. This study aims to analyse the partial and simultaneous effects of Digital Literacy (X1), Achievement Motivation (X2), and Collaboration (X3) on increasing students' learning outcomes (N-Gain Score / Y). The research method employed is a quantitative experiment involving a sample of 68 respondents. Data were collected using structured questionnaires for the independent variables and test instruments (Pre-test and Post-test) to measure the dependent variable. Data analysis was performed using Stata software through multiple linear regression and classical assumption testing.The partial results (t-test) indicate that: (1) Digital Literacy (X1) has a positive and significant effect on learning outcomes (t = 3.19; p = 0.002); (2) Achievement Motivation (X2) has a positive and significant effect on learning outcomes (t = 2.52; p = 0.014); and (3) Collaboration (X3) has a positive and significant effect on learning outcomes (t = 2.21; p = 0.031). Furthermore, the simultaneous test (F-test) proves that Digital Literacy, Achievement Motivation, and Collaboration collectively exert a highly robust and significant influence on the improvement of students' learning outcomes (F = 24.85; p = 0.0000). The R-Square value of 0.5382 indicates that the combined contribution of these three variables explains 53.82% of the variance in students' N-Gain Scores, while the remaining 46.18% is influenced by other factors outside this research model
Sustainable Design of Closed-Loop Liquid–Liquid Extraction Systems: Process Simulation and Solvent Recovery Optimization Wiwik Werdingsih; Ibtisam Ibtisam
Catalyx : Journal of Process Chemistry and Technology Vol. 2 No. 2 (2025): April 2025
Publisher : Indonesian Scientific Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61978/catalyx.v2i2.1283

Abstract

Liquid–liquid extraction (LLE) is a critical separation process in industrial applications, often limited by solvent losses and environmental concerns. This study presents the development and optimization of a closed-loop LLE system incorporating solvent recovery, aimed at reducing total annualized cost (TAC), solvent make-up, and CO₂ emissions. Thermodynamic modeling using NRTL and UNIQUAC was validated against experimental tie-line data to ensure accurate simulation of phase behavior. Solvent screening was conducted based on distribution coefficient, selectivity, viscosity, and safety metrics. Aspen Plus simulations modeled a multistage extractor and integrated distillation unit, followed by optimization of solvent-to-feed ratio, number of stages, and recovery conditions. The optimized closed-loop system achieved a 30% reduction in TAC, over 60% reduction in solvent make-up, and a 35% decrease in CO₂ proxy emissions compared to an open-loop benchmark. Rate-based modeling enhanced simulation fidelity, and economic and environmental metrics confirmed the sustainability of the proposed configuration. These results demonstrate the effectiveness of combining solvent recovery and process simulation to improve the sustainability and economic performance of LLE operations.
Integrating Safety Metrics and Regulatory Compliance for Green Solvent Selection in Sustainable Chemistry Sarifah Fauziah Syed Draman; Ratna Wulandari Aji Saputri; Ibtisam Ibtisam
Catalyx : Journal of Process Chemistry and Technology Vol. 2 No. 2 (2025): April 2025
Publisher : Indonesian Scientific Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61978/catalyx.v2i2.1330

Abstract

The shift toward sustainable practices in chemical manufacturing necessitates the replacement of traditional solvents with safer, environmentally benign alternatives. This study proposes a dual-criteria evaluation framework that integrates Safety, Health, and Environmental (SHE) scores with REACH regulatory compliance to support green solvent selection. Using a curated dataset of solvents characterized by physical and operational risk metrics, the methodology identifies high-performing green solvents suitable for sustainable process design. Quantitative assessments were performed based on SHE scores (scale 1–10), flash point, boiling point, and regulatory status. Correlation analysis revealed key relationships between solvent physical properties and SHE risk indicators. Recommended solvents were further evaluated for practical applications in extraction, synthesis, and purification processes. Solvents such as ethanol, water, and propylene carbonate demonstrated favorable SHE profiles and full REACH compliance. Results confirmed the utility of simple scoring systems in streamlining solvent substitution while ensuring safety and regulatory alignment. The framework offers a transparent, efficient method for solvent screening, serving as a foundation for broader sustainability tools like Process Mass Intensity (PMI), E-Factor, and Life Cycle Assessment (LCA). This model enhances industrial decision-making by enabling safer and more sustainable solvent use. Its adaptability supports both laboratory-scale and industrial applications, promoting compliance and long-term environmental stewardship.
Co-Authors Achmad Imam Agung Gde Agus Yudha Prawira Adistana Masmui Masmui Ratna Wulandari Aji Saputri Sarifah Fauziah Syed Draman Soeparno Soeparno Wiwik Werdingsih