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EduChemia: Jurnal Kimia dan Pendidikan
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 25024778     EISSN : 25024787     DOI : http://dx.doi.org/10.30870/educhemia.v6i2.10412
Core Subject : Science, Education, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology
Focus and Scope Educhemia (Jurnal Kimia dan Pendidikan) is Periodicals published the results of research related to the development of science and technology in the field of Chemistry and Chemistry education as a form of intellectual property Chemistry: Organic chemistry, Inorganic chemistry, Biochemistry, Physical chemistry, Analytical Chemistry, Environmental Chemistry, Material chemistry, Ethnochemistry. Chemistry education: chemistry learning design and model, chemical education curricula, Technology innovation and media/multimedia in chemistry learning, development of evaluation tools, lesson study and classroom action research
Arjuna Subject : Kimia(semua kategori) - Kimia Organik
Articles 11 Documents
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Search results for , issue "Vol 9, No 2 (2024)" : 11 Documents clear
Adsorption of Cadmium (Cd) Metal in Solution Using Pofa-Based Zeolite (Palm Oil Fly Ash) Darmayanti, Lita; Indriani, Lisa
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.24846

Abstract

Cadmium is one of the heavy metals with high toxicity that can harm human health and the environment. A commonly used method to remove heavy metals is adsorption. One of the widely used adsorbents is zeolite, which is composed primarily of silica and alumina. Palm oil fly ash (POFA) is a waste from palm oil mills that is rich in silica and alumina so that it can be used as a basic material for zeolite. This research aims to study the factors that affect the adsorption process of Cd metal using zeolite synthesized from POFA and determine the kinetics and isotherms of adsorption. The factors observed were pH (3, 4, 5, 6; 7), adsorbent dosage (1, 1.5, 2, 2.5, 3 g/l), contact time (5, 10, 15, 30, 60, 90, 120, 150, 180 min), and initial concentration of Cd metal (2, 4, 6, 8, 10, 15 mg/L). Adsorbent characterization was performed by XRF and XRD analysis. The results showed that pofa-based zeolite can remove Cd metal with an efficiency above 95%. The adsorption process can follow well the pseudo-second-order kinetics model and both Langmuir and Freundlich isotherm models with a maximum adsorption capacity of 64.58 mg/g. The zeolite synthesized from POFA can remove Cd metal well and has the potential to be developed into an adsorbent
The Development of Green Chemistry Teaching Material Based on Organic Compound Synthesis Pertiwi, Annisa Mustika; Wahyuningrum, Deana
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i1.24452

Abstract

Green chemistry is currently included in 10th-grade chemistry in Indonesia’s Merdeka curriculum. However, the learning implementation is still limited to the knowledge of approximately 12 principles of green chemistry, but its relevance to real-world applications is less discussed. The process of organic compound synthesis is a problem that is closely related to the application of green chemistry. This research aims to produce context-based green chemistry teaching materials for senior high school students on the basis of experiments using an ionic liquid and microwave-assisted organic synthesis (MAOS) method in the synthesis of an organic compound named dehydrozingerone (DHZ) from vanillin and acetone. The instructional material development method follows the Research & Development (RnD) method via a 4D model and includes the Define, Design, Develop, and Deliver stages. The guided-inquiry student worksheets developed in this research were tested in a classroom setting with 31 10th grade students from Al Ma’soem Senior High School in Bandung, West Java, Indonesia. The evaluation of the teaching materials received a positive response from the students, with a score of 78.29%, indicating a “good” classification. The findings of this study highlight the potential of these contextual teaching materials to enhance students’ engagement and understanding in learning green chemistry concepts and applications.
Biodiesel Synthesis of Crude Palm Oil By Using Bifunctional Catalyst Sn/Kaolinite and K2CO3 Noor, Abdullah Yamani; Usman, Thamrin; Wahyuni, Nelly
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.25035

Abstract

The relatively high content of free fatty acids in crude palm oil inhibits the direct synthesis of biodiesel. The use of a bifunctional solid heterogeneous catalyst allows for simultaneous transesterification-esterification reactions and facilitates the purification of the final product from the reaction mixture. This study aimed to synthesize biodiesel from crude palm oil via the use of a Sn-K/metakaolinite catalyst in a simultaneous transesterification-esterification reaction. Biodiesel synthesis was carried out using crude palm oil before and after pretreatment. The optimum conditions were determined by the reaction time (1–5 hours), reactant molar ratio (1:2, 1:4, 1:6, 1:8, 1:10, 1:12), and catalyst concentration (1,3, 5,7 and 9%), and the resulting methyl esters were measured for density, viscosity, and free fatty acids and analyzed via GC‒MS. The results obtained indicate that biodiesel synthesis was successfully carried out with completely converted methyl esters via treated crude palm oil. The optimum conditions for the reaction included a reaction time of 3 hours, a catalyst concentration of 5% and a reactant molar ratio of 1:10. The resulting methyl ester product has a density of 0.86 g/mL, a viscosity of 3.02 cSt and a free fatty acid content of 0.059%. The results of the GC‒MS analysis revealed that the dominant methyl ester components were methyl oleate and methyl palmitate. The synthesis of biodiesel from crude palm oil with a Sn-K/metakaolinite catalyst has been proven to be carried out in simultaneous transesterification-esterification reactions with good catalytic activity.
Extraction of Chlorophyll from Pandan Wangi Leaves (Pandanus amaryllifolius Roxb.) as Natural Textile Dyes Berghuis, Nila Tanyela; Isnaeni, Lania Ameswari; Shaleha, Karisma Nur; Kusumaningrum, Aninda Tri; Maryana, Erma; Kurniawati, Fitri
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.24963

Abstract

This research focuses on the utilization of natural materials such as textile dyes, which are environmentally friendly and safe for the health of living things. The natural ingredients used are pandan wangi leaves (Pandanus amaryllifolius Roxb.), especially chlorophyll compounds, which are green pigments. The types of fabrics tested consisted of cotton fabrics, linen fabrics, and drill fabrics. The purpose of this study was to extract chlorophyll from pandan wangi leaves via the maceration extraction method with ethanol and maceration for 36 hours. The particle size of the pandan wangi leaves was made up to 60 mesh to obtain the optimum extraction yield. Fabric coloring begins by washing the fabric with Turkish Red Oil (TRO) solution and then mordanting it with various concentrations of 1% and 0.6% alum mordant. Fabrics that have been dyed are then tested for color fastness to sunlight and rubbing. The results of maceration of the ethanol extract produced a yield value of 40.22%. The chlorophyll a and b contents were calculated from the absorbance values obtained via ultraviolet‒visible (UV‒Vis) spectroscopy, namely, 3.7223 µg/mL and 1.1362 µg/mL, respectively. Fourier transform infrared (FTIR) characterization revealed the presence of methyl, ketone, amine, and ester functional groups. The values of the test results for color fastness to sunlight and rubbing were 4 (good) and 4‒5 (very good), respectively.
Development of E-Modules of Reaction Rate Problem-Based Learning Model to Improve Students’ Critical Thinking Skills and Wasaka Character Rusmansyah, Rusmansyah; Kusasi, Muhammad; Sapnah, Sapnah; Bakti, Iriani; Astuti, Resti Tri
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.27504

Abstract

This study aims to improve critical thinking skills and Wasaka characteristics through the development of a problem-based learning-based reaction rate e-module and to assess the validity, practicality, and effectiveness of the e-module. This research uses the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). In the analysis stage, researchers assess the needs of teaching materials, characteristics of students, and learning objectives. The design stage includes material collection, outline preparation, and e-module prototype design. At the development stage, the author conducted e-module development and validation with expert validators. In the implementation stage, the learning application using the e-module was carried out in class XI B SMA Negeri 10 Banjarmasin with as many as 34 students, which involved practicality and effectiveness tests. At this stage, students learn via e-modules that are accessed via their respective cellphones. The evaluation stage is carried out with 2 types, namely, summative evaluation through pretest and posttest and formative evaluation, by evaluating each stage by revising the e-module. The results showed that the e-module was very valid (score of 4.85), very practical (score of 92.75), and effective in improving critical thinking skills (N-Gain of 0.78) and Wasaka characteristics (N-Gain of 0.72). The indicators used in the critical thinking ability variable are the FRISCO (focus, reason, inference, situation, clarity and overview). In addition, the Wasaka character indicators used are responsibility, hard work and resilience. The results of this analysis indicate that the e-module is very valid, very practical, and very effective in applying the reaction rate material to improve critical thinking skills and Wasaka characteristics.
Alcohol-Diluted Deep Eutactic Solvent as the Electrolyte Kurniawan, Rizmahardian Ashari; Mukhlishin, Hamdil; Indriani, Laila
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.27945

Abstract

Deep eutectic solvents (DESs) are promising alternatives to traditional electrolytes in electrochemical devices because of their favorable properties, including low volatility, biodegradability, and ease of preparation. This study aimed to optimize a DES composed of choline chloride and urea by investigating the effects of molar ratios and short-chain alcohol additions on viscosity, ionic conductivity, and electrochemical stability. The DES was prepared at 80°C at four molar ratios of choline chloride to urea (1:1, 1:2, 1:3, and 1:4), with a 1:2 ratio optimal for achieving a stable, homogeneous solution. Short-chain alcohols (methanol, ethanol, 1-propanol, and 1-butanol) were added to reduce viscosity and enhance conductivity. The addition of methanol and ethanol effectively lowered the viscosity and increased the ionic conductivity because of their ability to integrate into the DES matrix and disrupt hydrogen bonding. Electrochemical analysis confirmed that the oxidative stability of DESs remained unaffected by these alcohol additions, with oxidation onset consistently at approximately 1 V. These findings demonstrate that methanol and ethanol are suitable additives for improving the performance of DESs as electrolytes in electrochemical applications, enhancing both their conductivity and stability.
Exploring Chemistry Teachers' Awareness of FabLab for Transformative Educational Practices Khefrianti, Syinta; Rustaman, Nuryani; Kadarohman, Asep; Wiji, Wiji
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.24418

Abstract

Learning chemistry materials using 2D media is currently unable to provide a clear picture of some abstract and microscopic chemical content. Several studies show that many students have difficulty with chemistry because they cannot visualize structures and processes at the submicroscopic level and relate them to other levels of chemical representation. The purpose of this study was to determine the teachers' understanding of new technology that can be used to help students translate 2D into 3D in real form, namely using FabLab. This research is descriptive qualitative research with the research subjects 39 high school teachers and vocational school teachers in West Java. There are three stages in this research, data reduction, data presentation and conclusion drawing. The results showed that all teachers do not know or understand FabLab, although there are teachers who have attended training related to FabLab.Only 23% of teachers are aware of 3D printing but they do not know what is meant by FabLab. There are two schools that have 3D printing facilities, but they are not utilized, one of the reasons being the lack of technological mastery. This research is useful in designing professional development training for chemistry teachers in the field of technology, specifically in the utilization of FabLab.
Front Matter Vol 9 No 2 (Cover, Editorial Board, Preface, Table of Contents) EduChemia, EduChemia
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.29853

Abstract

Development of Holokul: 3D Hologram Learning Media on Molecular Structure Pamenang, Fransisca Ditawati Nur; Nathasya, Paschalia Melinda
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.24694

Abstract

Learning media refers to equipment designed and developed to convey information, facilitating the effective transmission of knowledge. Molecular structure is a complex chemical concept containing abstract ideas, which can challenge student comprehension. To address this, the development of 3D hologram learning media for molecular structures aims to provide students with a visual representation for enhanced understanding. This research aims to (1) understand the process of developing 3D hologram learning media for molecular structures via the ADDIE development model and (2) assess the validity and practicality of the developed media. The supporting instruments for this research include product and instrument validation sheets, product readability questionnaires, and question items. The study involved six students from the 12th grade. Descriptive analysis of the data reveals that the developed product aligns with the ADDIE model, achieving a validation rate of 90%. The practicality of the product is determined to be 89%. Therefore, the developed product can be utilized as a learning media for molecular structures via 3D holograms.
Back Matter Vol 9 No 2 (Author Guidelines, Subject Index, Author Index, Acknowledgment) EduChemia, EduChemia
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i2.29854

Abstract

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