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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 207 Documents
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Gelatin from Jerbung Shrimp Shells (Fenneropenaeus marguiensis de Man) Using Three Types of Solvent: Acetic Acid, Phosphoric Acid, and Sulfuric Acid Sjamsiah, Sjamsiah; Firnanelty, Firnanelty; Manesa, Sri Haerani Dg; Cahyani, Andi Imas; Rahmawati, Sari
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 1 (2024)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i1.23354

Abstract

Gelatin is a type of protein consisting of amino acids produced through the hydrolysis of collagen. One natural source that can be used as a raw material for making gelatin is the shrimp shell. This study aims to determine the characteristics of gelatin made from Jerbung shrimp shells (Fenneropenaeus marguensis de Man) using three types of acid solvents, namely, acetic acid, phosphoric acid, and sulfuric acid. The hydrolysis process by soaking with acid solvent was carried out with varying concentrations of 1%, 3% and 6%. The results of the analysis of the physical characteristics of gelatin with acetic acid, sulfuric acid and phosphoric acid were suitable for SNI. The pH values ranged from 4.5–6.5, the water content was less than 16%, the ash content was 3.25%, the viscosity ranged from 1.5–7 cP, and the gel strength ranged from 50–300 blooms. The FTIR data of gelatin synthesized from 3 types of acids revealed typical absorption peaks, such as N–H and O–H functional groups at wavenumbers of 3600–3400 cm-1, C–H groups 3000–2840 cm-1, and C=O groups at wavenumbers of 1800–1650 cm-1. These results indicate that Jerbung shrimp shells have potential as alternative raw materials for making gelatin.
Development Electronic Worksheet MPPj ETHNO-STEAM to Increase Numeracy Literacy and Conservation Character Fikrina, Qorry Adilla; Sudarmin, Sudarmin; Pujiastuti, Rr Sri Endang; Priatmoko, Sigit; Mahatmanti, F Widhi; Ulfana, Avia Rizka; Kholis, Nur
EduChemia: Jurnal Kimia dan Pendidikan Vol 8, No 2 (2023)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v8i2.21554

Abstract

This research aims to develop and analyze the characteristics, feasibility, practicality, and effectiveness of the MPPj ethno-STEAM e-LKPD to improve students' numeracy literacy and conservation character. MPPj is an abbreviation for Project Learning Model, a learning model based on PjBL. The research uses the Research and Development (R&D) method, with the approach model used being the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model. The analysis stage was carried out to determine students' needs for teaching materials through interviews with teachers. The design stage is carried out to create a design for the e-LKPD. The development stage was carried out to develop research instruments. The instruments in this research include test instruments and non-test instruments. The implementation stage is carried out for product testing. The trials were carried out three times, namely small-scale trials to test the validity and reliability of the instrument and product feasibility, large-scale trials for practicality and effectiveness, and finally, implementation trials to determine the practicality and effectiveness of the final product. The evaluation stage is carried out to analyze the results of product implementation. The research results show (1) the characteristics of e-LKPD, (2) the product is suitable for use based on the results of feasibility tests by material experts and media experts, (3) the product is declared practical based on the results of the practicality questionnaire analysis by teachers and students, (4) the product is effectively used to develop numeracy literacy with indicators of estimating and calculating, using fractions, recognizing and using patterns, using spatial reasoning, using measurements, interpreting statistical information analyzed based on N-gain results, effectively developing conservation character based on the results of analysis of observation sheets with conservation indicators, namely caring, creativity, love of the country, responsibility, caring for the environment, using wisely and effectively in MPPj ethno-STEAM based on the results of the analysis of the project assessment sheet.
Back Matter Vol 7 No 2 (Author Guidelines, Subject Index, Author Guidelines, Acknowledgment) Langitasari, Indah
EduChemia: Jurnal Kimia dan Pendidikan Vol 7, No 2 (2022)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v7i2.28550

Abstract

Innovation of Binahong (Anredera cordifolia) Seed Extract Indicator Paper as An Alternative in Acid Base Testing Susilawati, Cica; Sudiarti, Tety; Nuryantini, Ade Yeti
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 1 (2024)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i1.25018

Abstract

The use of synthetic chemicals in acid‒base testing has raised concerns about their environmental impact. The use of natural materials to produce natural indicator paper is an attempt to reduce the negative impact on the environment. Binahong (Anredera cordifolia) seeds can replace conventional chemical synthetic materials. This study aims to develop Binahong seed indicator paper as an alternative environmentally friendly material for acid‒base testing. The method used in this research is experimental and involves the extraction of Binahong seeds, making indicator paper with a certain formulation, and testing the performance of the indicator paper using standard acid and base solutions. Data collection was performed via the observation and measurement of certain parameters. The test results of the Binahong natural indicator paper revealed a significant color change when 95% ethanol was used, which produces a red or purple color at pH 1‒7, a blue color at pH 8‒10 and a yellow color at pH 11‒14. Binahong seeds have potential as an environmentally friendly alternative in acid‒base testing because they respond well to variations in the acidity and basicity of the solution.
“Padi Lingko” to Reduce Hexavalent Chromium Levels (Cr(VI)) in Citarum River Water Sample Aeni, Suci Rizki Nurul; Nurdin, Nurdin; Ansori, Ikhsan Faisal
EduChemia: Jurnal Kimia dan Pendidikan Vol 8, No 2 (2023)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v8i2.21545

Abstract

Clean water is increasingly difficult to obtain, even though water is a chemical compound that is very important for living creatures' lives. Industrial and domestic community waste are a big problem in polluting the Citarum River, causing the water to become unfit. One of the toxic heavy metals found in Citarum River water is chromium (Cr(VI)). The technique that can be used to remove the heavy metal Cr(VI) in Citarum river water samples is adsorption using biological material (biosorption). Biosorption is the process of absorbing metal ions by materials originating from nature. In this research, jengkol peel was used. A modification of this research from previous research is the design of the "Padi Lingko" tool. This research aims to determine the results of the function test of the Padi Lingko tool and measure chromium(VI) levels in treated Citarum river water samples. The results of the analysis show that the power supply measurement results are in accordance with the expected values. The speed test results show appropriate values, namely at a low speed of 213 rpm, a medium speed of 1109 rpm, and a high speed of 1225 rpm. The timer test results show the appropriate time, with an average error factor of -0.02%. The results of the storage bucket test showed that when operated, the bucket did not produce vibrations or noise and could hold water. Apart from that, there are no leaks in the collection bucket. The test results show that the drive motor works well and can rotate the shaft without stuttering. The Padi Lingko tool could be used and succeeded in reducing Cr(VI) until a final level of 0.0529 mg/L was obtained.
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.
Front Matter Vol 8 No 2 (Cover, Editorial Board, Preface, Table of Contents) Langitasari, Indah
EduChemia: Jurnal Kimia dan Pendidikan Vol 8, No 2 (2023)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v8i2.28541

Abstract

Synthesis of EDTA-Functionalized Silica Coated Nanomagnetite as a Cobalt(II) Ion Adsorbent Kusumaningrum, Irma Kartika; Arabillah, Zulfikar Wildan; Kusfianti, Anisa Aulia; Munzil, Munzil; Wijaya, Anugrah Ricky
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 1 (2024)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i1.22639

Abstract

This research aims to synthesize silica-coated nanomagnetite EDTA functionalized (Fe3O4@SiO2-EDTA) to characterize its properties and test its ability to bind Co(II) metal ions. This research was carried out in several steps, including Synthesis of nanomagnetite and characterization via SEM, VSM, XRD, and FTIR; (2) Synthesis of nanomagnetite-coated silica (TEOS) and characterization via SEM, VSM, (3) Synthesis and characterization of silica-coated nanomagnetite with EDTA functionalization (Fe3O4@SiO2-EDTA), and characterization was carried out via SEM, VSM, XRD, and FTIR. (4) Adsorption ability test of Fe3O4@SiO2-EDTA as a Co(II) metal ion adsorbent. EDTA-functionalized silica-coated nanomagnetite was successfully synthesized. Confirmation and characterization of the synthesized material was performed on the basis of the FTIR spectrum band at wavenumber 687 cm-1, which confirmed the formation of magnetite, whereas the absorption band at wavenumber 1092 cm-1 confirmed the formation of a silica coating, and the peak at wavenumber 1617 cm-1 confirmed EDTA functionalization in the material. The peak of the XRD chromatogram is shown in XRD pattern 2, which confirms nanomagnetite, and in silica-coated nanomagnetite, the resulting characteristic peak is the same as the characteristic peak in Fe3O4 except in region 24, which confirms the presence of the silica coating. The magnetization of nanomagnetite before coating was 57 emu/g and that after coating was 48 emu/g. The maximum adsorption ability of the synthesized material for Co(II) ions was 0.1336 mg/g.
Conversion of Oil Palm Empty Fruit Bunches Using The Pyrolysis Into Bio-Oil and Its Characterization for Biopesticide Sari, Frisa Rahmah; Mayub, Afrizal; Nursa'adah, Euis
EduChemia: Jurnal Kimia dan Pendidikan Vol 8, No 2 (2023)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v8i2.21661

Abstract

Oil palm empty fruit bunches (EFB) is a by-product of processing CPO (Crude Palm Oil) at a palm oil processing factory. The accumulation of Oil Palm EFB waste could cause environmental problems in the future. One of the optimal ways to reuse oil palm EFB waste is to convert it into bio-oil using pyrolysis. Bio-oil contains phenol, acid compounds, and their derivatives with antioxidant and antimicrobial, which makes them suitable for biopesticides. This study aims to produce Bio-Oil by pyrolysis at different temperatures and analyze its characterization for use as a biopesticide. Oil Palm EFB characterization was carried out by measuring the yield and pH and analyzing the Phenol and Acetic Acid compounds in the pyrolysis products at 100oC, 150oC, and 245oC. Yield analysis was carried out by comparing the mass of the Bio-Oil produced with the mass of the Oil Palm EFB raw material used. Phenol was determined using the Folin-Ciocalteu reagent, and absorbance was measured using UV-Vis spectrophotometry, acetic acid was determined using the titrated acid-base method, and pH was measured using a pH meter. The results showed that the parameter of temperature in pyrolysis affected the concentration of the chemical compounds produced. The results showed that the pyrolysis temperature parameter affected the concentration of the chemical compounds produced. Treatment at 150oC- 245oC is the best result due to the parameters that have been analyzed. The characteristics of the Bio-oil produced are a yield of 29.63%-100%, total phenol of 1.04%-3.87%, total acid of 1.12%-2.14%, and a pH value of 4.09 - 4.16. The characteristics of this Bio Oil can be used as a biopesticide that complies with the Indonesian National Standard (SNI).
Back Matter Vol 7 No 1 (Author Guidelines, Acknowledgment) Langitasari, Indah
EduChemia: Jurnal Kimia dan Pendidikan Vol 7, No 1 (2022)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v7i1.28551

Abstract

Page 17 of 21 | Total Record : 207

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