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Jurnal Akademika Kimia
Published by Universitas Tadulako
ISSN : 24775185     EISSN : 23026030     DOI : -
Core Subject : Science, Education,
Chemistry Education
Jurnal Akademika Kimia is an electronic open-access journal that aims to publish the latest research results in the area of chemistry education and pure chemistry from academicians, professionals, and other practitioners at all levels of chemistry education. The journal coverage includes the following: current trends of professional chemistry education, educational technology, teacher education, educational science, learning assessment, learning models and development of learning materials, as well as pure chemistry including organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, biochemistry and other chemistry fields such as environmental chemistry, that emphasis on a broad description of the general methods and processes for the synthesis, modification, and characterization of chemical materials.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 5 Documents
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Search results for , issue "vol. 13 no. 2 (2024)" : 5 Documents clear
Development of a Flipbook on Functional Groups of Organic Compounds: SATLOC Approach Oriented to Science Literacy Ali A. Mu'minin
Jurnal Akademika Kimia Vol. 13 No. 2 (2024)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2024.v13.i2.pp32-39

Abstract

The development of flipbooks for learning functional groups of organic compounds is needed to enable students to learn independently more easily and interactively. The functional groups of organic compounds have characteristics that should be realised through a systematic approach, namely SATLOC (Systematic Approach to Teaching and Learning Organic Chemistry). Based on the independent learning curriculum, the implementation of learning should emphasise the development of literacy and numeracy skills. Therefore, this research aimed to develop and assess the feasibility of a flipbook on the functional groups of organic compounds using a SATLOC approach oriented toward scientific literacy. The flipbook's development used the ADDIE (Analysis, Design, Development, Implementation, Evaluation) model. The level of product feasibility is obtained through a content validity test, including materials and media, and limited trials. The average percentage of scores for the content validity test results for materials, media, and limited trials was 88%, 85%, and 85%, respectively. These results indicate that the product is high-quality and feasible for use.
Preparation of Biochar from Mango Seed Shell as a Chromium Ion Adsorbent Mery Napitupulu; Ayla Cakrawala; Daud K. Walanda; Tri Santoso
Jurnal Akademika Kimia Vol. 13 No. 2 (2024)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2024.v13.i2.pp57-62

Abstract

The study aims to utilize waste from manga fruit, especially seed shells, as raw material for chromium metal adsorbents in water. Utilizing this waste is one way to support the principle of zero waste for agricultural and plantation products. The biochar preparation process is carried out by pyrolysis, namely, burning in the absence of oxygen. To determine the adsorption capacity of biochar from mango seed shells for chromium ions, analysis was carried out by varying the biochar weight and chromium concentration. The results showed that at carbonisation temperatures of 350 oC, 400 oC, and 450 oC, the water content was 7.5 %, 6.4 %, and 6.2 %, respectively, while the ash content was 6.3 %, 5.9 %, and 5 %, respectively. 6 % respectively. The optimum biochar weight was determined using 20 mg, 40 mg, 60 mg, 80 mg, and 100 mg of biochar. In contrast, the optimum concentration was determined using biochar concentrations of 20 ppm, 40 ppm, 60 ppm, 80 ppm, and 100 ppm. The research results showed that the optimal weight of mango seed shell biochar at a biochar temperature of 450 °C was 100 mg, with a chromium absorption percentage of 92.96%. Meanwhile, the optimum concentration is 20 ppm across all biochars, with chromium absorption of 92.05% for the 450 °C biochar. Manga seed shells have economic value and environmental remediation applications, as they can be converted into adsorbents for chromium metal.
Composting as an Alternative to Waste Management at State University of Malang Eli H. Sanjaya; Abdul K. Syahroni; Much S. Alwy; Mohamad F. Setyawan; Yudhi Utomo; Agung Witjoro; Mohd F. M. D. Din
Jurnal Akademika Kimia Vol. 13 No. 2 (2024)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2024.v13.i2.pp51-56

Abstract

Waste is one factor that becomes an environmental problem. The waste that is often found is inorganic and organic. One of the uses of organic waste is the production of solid organic fertilizer in the form of compost. This research utilizes dried leaves (sono leaves, teak, trembesi, kenitu, breadfruit, and ketepeng) as raw materials for making compost. The compost-making method is carried out by adding an activator called EM4 (Effective Microorganism 4). This research produced pH values, Nitrogen, Phosphorus, Potassium, and Water Content per values under SNI 19-730-2004 regarding the specification of compost from organic waste. And the results of microbial diversity in the compost were obtained, which were dominated by microbes of the type Proteobacteria 40%, Firmicutes 30%, Actinobacteria 13%, Acidobacteria 6%, Bacteroidota 4%, Planctomycetota 3%.
Development of Green Chemistry-Based Practicum Guide Towards Generic Science Skills Muhammad A. Gifary; Siti Nuryanti; Kasmudin Mustapa
Jurnal Akademika Kimia Vol. 13 No. 2 (2024)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2024.v13.i2.pp63-71

Abstract

The research on the development of a green chemistry-based practicum guide for generic science skills aimed to measure the validity, practicality, and effectiveness. The research used is Research and Development (R&D) based on the ADDIE development model. The subjects of this study were students of class XI IPA SMAS Alkhairaat Kalukubula who had been taught the subject of the polarity of electrolyte and non-electrolyte solutions. The instruments used in this study were validation sheets, questionnaires, and an essay test. Data were analyzed by using quantitative descriptive techniques. The results showed that the practicum guide was valid for the material aspect (84%) and the media aspect (82%). The practicum guide was rated in the practical category with a score of 86%. The effectiveness of practicum guides on generic science skills, with a Cohen effect size of 1.75 in the very large effect category and student responses at 89% in the very effective category. Based on these results, the green chemistry-based practicum guide is worthy of use.
Android Based E-Module Development Integrated Virtual Laboratory in Learning Chemistry of Electrochemical Cell Materials Ni Made Putri Savitri; Daud K. Walanda; Mery Napitupulu; Detris Poba
Jurnal Akademika Kimia Vol. 13 No. 2 (2024)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2024.v13.i2.pp40-50

Abstract

Chemistry education students experience misconceptions in studying electrochemical material, especially voltaic cells and electrolytic cells, because most of it is abstract. Most students understand electrochemical material only from the macroscopic aspect, so students' understanding of electrochemical cells is relatively low; therefore, it is necessary to use the right media to help overcome misconceptions when studying electrochemical material. This research aims to develop an Android-based e-module integrated with a virtual laboratory on electrochemical cell material produced as a chemistry learning medium. This research is research and development using the ADDIE model with stages, namely analysis, design, development, implementation, and evaluation. Validation of the Android-based e-module integrated with a virtual laboratory was carried out by two UNTAD chemistry education lecturers and implemented by trial on 20 chemistry education students in semesters 1 and 5. The conclusion of this research shows that the Android-based e-module integrated in the virtual laboratory is valid and feasible to use as a learning medium to overcome misconceptions experienced by chemistry education students when studying electrochemistry, as shown by the results of material validation and media validation, which were declared very valid with a value of 85.19% and 83.33%, and product trial results with a value of 81.86%, which is included in the very feasible category.

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