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Journal of Chemical Learning Innovation
Published by Cahaya Ilmu Cendekia Publisher
ISSN : 30631629     EISSN : 30630886     DOI : https://doi.org/10.37251/jocli
Core Subject : Science, Education, Social,
Chemistry Education Social Sciences Other
Journal of Chemical Learning Innovation is a double-blind peer-reviewed journal dedicated to disseminating advances in science and research in chemistry, both in Indonesia and in the global context of developing countries. Committed to achieving excellence, Jurnal Inovasi Pembelajaran Kimia publishes comprehensive research articles and invited reviews from leading experts in the fields of chemistry education and chemistry research. The selection criteria prioritize papers that demonstrate high scientific value, convey new knowledge, and have a significant impact on chemistry education and research. The journal focuses on evaluation, chemistry teaching and learning, pure chemistry research, EthnoChemistry, TIMSS Tasks, and related topics at the school and college levels.
Arjuna Subject : Umum - Umum
Articles 100 Documents
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Intensification of Microalgae Lipid Extraction Process Scenedesmus Sp. through Integration of Ultrasonic Pretreatment and Freezing in a Soxhlet System Rodríguez, Frank Camilo Ramíres
Journal of Chemical Learning Innovation Vol. 3 No. 1 (2026): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jocli.v3i1.2969

Abstract

Purpose of the study: This study aimed to evaluate the effectiveness of ultrasonic and freezing pretreatment strategies in intensifying the Soxhlet extraction process for lipid recovery from Scenedesmus sp., within the framework of chemical engineering separation processes. Methodology: An experimental laboratory design was employed using dried microalgae biomass subjected to three treatment conditions: control (no pretreatment), ultrasonic pretreatment (30 kHz, 30 minutes), and freezing pretreatment (−20°C, 24 hours). Lipid extraction was performed using Soxhlet extraction with n-hexane as the solvent. The extracted lipids were quantified gravimetrically, and all experiments were conducted in triplicate to ensure reproducibility. Main Findings: The results showed that ultrasonic pretreatment significantly enhanced lipid yield (26.78%), followed by freezing pretreatment (23.12%), compared to the control (18.45%). Process intensification efficiency reached 45.14% for ultrasonic treatment and 25.31% for freezing treatment. The findings indicate improved mass transfer and cell disruption, particularly under ultrasonic conditions. Novelty/Originality of this study: This study introduces a process intensification perspective by integrating ultrasonic and freezing pretreatments into a conventional Soxhlet extraction system, highlighting their potential to optimize traditional extraction processes without requiring advanced or high-cost technologies.
Ethnochemical Investigation of Traditional Maize Fermentation Practices in Rural Andean Communities of Peru Reategui, Reyna Gladys Cárdenas Vda. de; Shekari, Nasim; Dhar, Abhinav
Journal of Chemical Learning Innovation Vol. 3 No. 1 (2026): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jocli.v3i1.2971

Abstract

traditional maize fermentation practices and their underlying chemical processes in Andean communities of Peru using an ethnochemical approach. Methodology: This study employed an integrated ethnographic and chemical analysis approach, including semi-structured interviews, participant observation, and laboratory analyses using GC-MS, HPLC, and spectrophotometry to evaluate physicochemical parameters and compound profiles. Main Findings: Results showed a significant decrease in pH (6.8 to 3.9) and an increase in ethanol content during fermentation (p < 0.05). Ethnographic findings revealed structured local knowledge systems that regulate fermentation processes, which were found to correlate with measurable chemical transformations. Novelty/Originality of this study: This study provides empirical evidence linking cultural fermentation practices with biochemical processes, demonstrating that traditional knowledge systems function as adaptive regulatory mechanisms within fermentation systems.
Integrating Occupational Health and Safety (OHS) into Chemical Laboratory Learning: A Mixed-Method Study on Students’ Safety Awareness and Practices Dachia, Hassan Abdullahi; Khamali, Jairus Bulimo; Kumabia, FKR
Journal of Chemical Learning Innovation Vol. 3 No. 1 (2026): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jocli.v3i1.2977

Abstract

Purpose of the study: This study aims to analyze students’ occupational health and safety (OHS) awareness and practices in chemical laboratory learning and to evaluate the effectiveness of integrating OHS principles into laboratory instruction to reduce safety risks and improve compliance. Methodology: This study employed a mixed-method approach using structured questionnaires, observation sheets, semi-structured interviews, and document analysis. Data were collected from undergraduate chemistry students. Quantitative data were analyzed using descriptive statistics, while qualitative data were analyzed through thematic analysis. Job Safety Analysis (JSA) was applied as a risk assessment tool. Main Findings: The results showed that 78% of students received safety training, but only 34% could identify hazard symbols correctly. Compliance with safety practices was low, including fume hood usage (25%) and chemical waste disposal (10%). JSA results indicated that 19% of laboratory activities were categorized as high to extreme risk levels. Novelty/Originality of this study: This study provides a novel integration of Job Safety Analysis (JSA) into chemical laboratory learning to systematically identify risks and improve safety practices. It also offers an evidence-based approach for embedding OHS into the curriculum, contributing to the development of a proactive laboratory safety culture.
Innovation in Augmented Reality-Based Chemical Bonding Learning Media to Support Interactive Learning Nur, Ade Irma; Amina, Fauzia; Desrina, Tiwi; Secha, Tianur
Journal of Chemical Learning Innovation Vol. 3 No. 1 (2026): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jocli.v3i1.2988

Abstract

Purpose of the study: This study aims to determine students’ responses toward an interactive learning media based on augmented reality technology on chemical bonding material, focusing on usability, visualization, material benefits, language clarity, and potential impact in supporting interactive learning experiences. Methodology: This study employed the Warsita development model consisting of design, production, and evaluation stages. The developed media included an augmented reality application integrated with a marker book. Data were collected through a structured questionnaire consisting of 40 items administered to 40 students. Validation involved media and subject experts, and data were analyzed using percentage techniques and interpretation criteria. Main Findings: Students showed positive responses toward the augmented reality-based interactive learning media, categorized as good overall. High acceptance was reflected in usability and illustration aspects, while material benefits, grammar, and future impact were also positively rated. The media demonstrated feasibility for classroom use with minor improvements needed for long-term learning engagement. Novelty/Originality of this study: This study presents an augmented reality-based interactive learning media specifically designed for chemical bonding with integrated marker books and application features. It emphasizes students’ response evaluation across multiple aspects, providing empirical insight into user acceptance and contributing to the development of more effective and engaging chemistry learning media.
Implementation of Information and Communication Technology Media in Project-Based Learning and Its Impact on Learning Outcomes in Electrolyte and Non-Electrolyte Solution Material Kadarusman, Rian
Journal of Chemical Learning Innovation Vol. 3 No. 1 (2026): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jocli.v3i1.2990

Abstract

Purpose of the study: This study aims to examine the influence of information and communication technology media applied in project-based learning on student learning outcomes in the material of electrolyte and non-electrolyte solutions. Methodology: The research method used was a quasi-experimental design with a pretest and posttest design for two groups. Two classes were randomly selected as the experimental and control groups. The experimental group used information and communication technology media in project-based learning, while the control group used a demonstration method. Data were obtained through tests and analyzed to determine the effect of the treatment. Main Findings: The analysis results show that the use of information and communication technology media in project-based learning has a positive impact on student learning outcomes. This is evidenced by the calculated t value being greater than the t table, which is 2.2, which is greater than 1.671. Furthermore, the posttest score for the experimental group was also higher than that of the control group, indicating a significant improvement in learning outcomes. Novelty/Originality of this study: This study offers novelty by integrating information and communication technology media within project-based learning specifically for electrolyte and non-electrolyte solution topics, which are often abstract for students. It advances existing knowledge by demonstrating how technology-enhanced learning projects improve conceptual understanding and learning outcomes, providing a more interactive and student-centered approach compared to conventional instructional methods.
Experimental Study: The Effect of Problem-Based Learning on Students' Chemistry Learning Outcomes in Thermochemistry Concepts Hidayat, Sony; Josiah, Olaitan Abiodun
Journal of Chemical Learning Innovation Vol. 3 No. 1 (2026): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jocli.v3i1.2996

Abstract

Purpose of the study: This study aims to determine the effect of the Problem-Based Learning model on students’ chemistry learning outcomes, specifically on thermochemistry concepts, by comparing the performance of students taught using problem-based learning and those taught using conventional learning methods. Methodology: This study used a quasi-experimental method with a nonequivalent control group design. The sample was selected using purposive sampling. Data were collected using multiple-choice test instruments. Data analysis techniques included Liliefors normality test, Fisher homogeneity test, and t-test at a significance level of 0.05. Main Findings: The results showed that there was a significant difference in learning outcomes between students taught using the Problem-Based Learning model and those taught using conventional methods. Students in the experimental group demonstrated higher achievement in thermochemistry concepts compared to the control group after the learning process. Novelty/Originality of this study: This study provides new insights by applying an experimental design to specifically examine the effect of Problem-Based Learning on thermochemistry learning outcomes. It integrates contextual problem-solving with conceptual understanding, offering a more meaningful learning approach and contributing to the development of innovative chemistry teaching strategies.
The Use of Flash Media as an Innovation in Chemistry Learning to Improve Student Learning Achievement in Atomic Structure Material Budi, I Made Krisna; Nuryani, Ni Nyoman
Journal of Chemical Learning Innovation Vol. 1 No. 2 (2024): December
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jocli.v1i2.2997

Abstract

Purpose of the study: This study aims to determine the effect of using Flash-based learning media on students’ learning achievement in chemistry, specifically on the topic of atomic structure, compared to conventional teaching methods. Methodology: This study employed a quasi-experimental design using a pretest-posttest control group design. The instrument used was a multiple-choice test consisting of 20 items. Data were collected through pretest and posttest. Data analysis included validity and reliability testing, homogeneity test using F-test, and hypothesis testing using t-test with pooled variance. Main Findings: The results showed that students taught using Flash media achieved higher learning outcomes compared to those taught using conventional methods. The experimental group demonstrated better average scores and higher classical completeness. Statistical analysis indicated a significant difference between both groups, confirming that Flash media positively affects students’ achievement in atomic structure learning. Novelty/Originality of this study: This study introduces the application of specifically designed Flash media for atomic structure learning, integrating interactive animation and conceptual visualization. It provides empirical evidence of its effectiveness, offering a more focused approach compared to previous general multimedia studies and contributing to innovation in chemistry learning media development.
Lampung Natural Zeolite as a Green Solution: Heavy Metal Waste Treatment through Flotation-Filtration Method Setiawan, Asep
Journal of Chemical Learning Innovation Vol. 1 No. 2 (2024): December
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jocli.v1i2.2999

Abstract

Purpose of the study: This study aims to evaluate and compare the effectiveness of flotation, filtration, and combined flotation–filtration processes in removing iron (Fe) and reducing Chemical Oxygen Demand (COD) from synthetic wastewater. Methodology: This study employed flotation, filtration, and combined flotation–filtration methods using a ceramic membrane filtration unit, vacuum pump, air–ozone generator, and synthetic wastewater containing Fe, zeolite, Sodium Lauryl Sulfate (SLS), and Poly-Aluminum Chloride (PAC). Data were analyzed using concentration measurement and percentage removal efficiency calculations. Main Findings: The combined flotation–filtration process showed the highest performance, achieving Fe removal efficiency of 94.74% with final concentration of 5.26 mg/L. Filtration and flotation showed lower efficiencies. COD reduction was more stable in filtration but more effective initially in flotation–filtration. Membrane fouling was lower in flotation–filtration, resulting in higher permeate volume compared to filtration alone. Novelty/Originality of this study: This study presents a simultaneous flotation–filtration system integrated with air–ozone injection to enhance pollutant removal and reduce membrane fouling. It highlights the dual role of air–ozone as an oxidizing and cleaning agent, offering improved efficiency and membrane durability compared to conventional single-process methods.
Exploration of the Structure and Composition of Sn(S₀.₆Te₀.₄) Thin Film as a Potential Absorber in Solar Cell Technology Setianingrum, Mahmudah; Bozorboeva, Guluzra
Journal of Chemical Learning Innovation Vol. 1 No. 2 (2024): December
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jocli.v1i2.3001

Abstract

Purpose of the study: This study aims to synthesize and characterize Sn(S₀.₆Te₀.₄) thin films using vacuum evaporation and to analyze their crystal structure and chemical composition in order to evaluate their potential as absorber materials for solar cell applications. Methodology: Vacuum evaporation system with rotary and diffusion pumps, substrate heater, Penning manometer, thermocouple, furnace, digital balance, and multimeter were used. Structural analysis employed X-Ray Diffraction (Miniflex 600 Rigaku, Cu source). Surface morphology and composition were analyzed using Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). Data processed using Origin and PCPDFWIN software. Main Findings: Sn(S₀.₆Te₀.₄) thin films were successfully deposited at 250°C, 300°C, and 350°C. XRD results show increased diffraction peak intensity with higher temperature, indicating improved crystallinity, with optimum at 350°C. The structure approaches orthorhombic SnS. EDS confirms presence of Sn, S, and Te with composition close to theoretical values but slightly deviated due to non-stoichiometric effects. Novelty/Originality of this study: This study explores a specific composition of Sn(S₀.₆Te₀.₄) thin film using vacuum evaporation and simultaneously analyzes its crystal structure and chemical composition. It provides new insight into the relationship between temperature, crystallinity, and composition, contributing to the development of alternative absorber materials for solar cell technology.
Strengthening Chemistry Learning Outcomes through Discovery Learning and Laboratory Activities on Colloidal Systems Material Hilmina, Hilmina; Ahmad, Abu
Journal of Chemical Learning Innovation Vol. 1 No. 2 (2024): December
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/jocli.v1i2.3026

Abstract

Purpose of the study: This research aims to improve students' chemistry learning outcomes using the discovery method through laboratory activities on the concept of colloidal systems. Methodology: The method used in this study was classroom action research with a sample of 33 students taught using the discovery method through laboratory activities. The classroom action research consisted of two research cycles, each with stages including planning, implementation, observation, and reflection. The research instruments used were observation sheets, questionnaires, learning outcome tests, and teacher and student interviews. Main Findings: From the results of this thesis research, it is obtained an overview that this research has achieved the criteria that have become the limit of success indicators shown through the increase in the category of aspects of active student participation in learning in each cycle. Likewise, the learning outcome test saw an increase in the average score in cycle I of 68.09 increasing to 74.81 and no more students received a score below 60.00. Similarly, the results of student interviews responded positively to the learning process using the discovery method through laboratory activities. Novelty/Originality of this study: This research offers novelty through the integration of discovery learning methods with structured laboratory activities on the concept of colloidal systems to improve student learning outcomes. This approach emphasizes active student engagement through experimentation and problem-solving. These findings complement previous studies by demonstrating the effectiveness of the combination of inquiry learning and practicum in improving conceptual understanding and student participation.

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