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All Journal Reaktor International Journal of Renewable Energy Development JURNAL KIMIA SAINS DAN APLIKASI Urania Jurnal Ilmiah Daur Bahan Bakar Nuklir Indonesian Journal of Mathematics and Natural Sciences Jurnal Inovasi Pendidikan Kimia Sainteknol : Jurnal Sains dan Teknologi Jurnal Zeolit Indonesia Phenomenon : Jurnal Pendidikan MIPA Chemistry in Education Indonesian Journal of Chemical Science Indonesian Journal of Physics and Nuclear Applications Jurnal Penelitian Pendidikan IPA (JPPIPA) ALCHEMY Jurnal Penelitian Kimia IQRO: Journal of Islamic Education Journal of Innovative Science Education International Journal of Active Learning Jurnal Litbang Provinsi Jawa Tengah

- Jumaeri

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Author-ID : 293528

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences

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DESAIN E-DIAGNOSTIC TEST UNTUK ANALISIS PEMAHAMAN KONSEP PADA MATERI REDOKS DAN TATA NAMA SENYAWA Naila Faza Kamila; Dr. Jumaeri M.Si.
Phenomenon : Jurnal Pendidikan MIPA Vol 10, No 2 (2020): Jurnal Pendidikan MIPA
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/phen.2020.10.2.4247

Kesulitan belajar peserta didik dalam memahami konsep kimia perlu diidentifikasi dengan sebuah instrumen evaluasi yang tepat. Untuk itu penelitian ini bertujuan untuk mengetahui kelayakan dan keefektifan pengembangan instrumen e-diagnostic test berupa three tier multiple choice (TTMC) untuk menganalisis ketercapaian kompetensi dasar ranah kognitif dan pemahaman konsep. Instrumen tersebut terdiri dari tiga tingkat, pertama mengenai jawaban, kedua mengenai alasan, dan ketiga mengenai keyakinan. Penelitian ini merupakan penelitian pengembangan dengan metode Plomp yang meliputi beberapa fase yaitu fase investigasi awal, desain, realisasi, tes dan evaluasi, serta implementasi. Subjek penelitian ini adalah peserta didik kelas X SMA Islam Sultan Agung 1 Semarang. Hasil penelitian menunjukkan instrumen yang dikembangkan layak dengan hasil validasi isi oleh pakar dan validasi konstruk melalui uji skala kecil dan besar. Profil paham konsep tertinggi ditunjukkan oleh IKD-5 yaitu sebesar 61,02%. Profil miskonsepsi tertinggi ditunjukkan oleh IKD-4 yaitu sebesar 69,49%. Dan profil tidak paham konsep tertinggi ditunjukkan oleh IKD-3 yaitu sebesar 26,27%. Hasil analisis profil pemahaman konsep secara keseluruhan pada materi redoks dan tata nama senyawa menunjukkan 37,85% peserta didik paham konsep, 43,84% peserta didik miskonsepsi, dan 18,30% peserta didik tidak paham konsep.

Implementasi Kurikulum 2013 Dalam Meningkatkan Prestasi Belajar Siswa Jumaeri Jumaeri
IQRO: Journal of Islamic Education Vol 4, No 1 (2021): JULI 2021
Publisher : Institut Agama Islam Negeri Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24256/iqro.v4i1.1869

Penelitian ini dimaksudkan untuk menjawab permasalahan sebagai berikut: (1) Bagaimana implementasi kurikulum 2013 dalam meningkatkan prestasi belajar siswa pada mata pelajaran Akidah Akhlak di MAN Palopo (2) Apa saja faktor-faktor pendukung dan kendala implementasi kurikulum 2013 di MAN Palopo. Penelitian ini bertujuan untuk mengetahui dan mendeskripsikan implementasi kurikulum 2013 dalam meningkatkan prestasi belajar siswa pada mata pelajaran Akidah Akhlak kelas XI IIK1 tahun ajaran 2019/2020 MAN Palopo. Jenis penelitian yang digunakan peneliti yaitu penelitian lapangan (field Research) dengan menggunakan metode kualitatif deskriptif. Pengumpulan data menggunakan observasi, wawancara, dan dokumentasi. Hasil penelitian menunjukkan bahwa prestasi belajar siswa dikelas XI IIK1 tahun ajaran 2019/2020 pada mata pelajaran Akidah Akhlak meningkat, banyak siswa yang melebihi nilai kriteria ketuntasan minimal (KKM) yang telah ditentukan oleh guru. Hal ini disebabkan dengan pengimplementasian kurikulum 2013 guru menggunakan berbagai metode pada proses pembelajaran seperti permainan ular tangga dan penayangan video-video yang sesuai dengan materi sehingga siswa bersemangat dan tidak merasa bosan di dalam kelas menerima materi. Faktor pendukung Implementasi kurikulum 2013 di MAN Palopo yaitu tersedianya buku bahan ajar, sarana dan prasarana yang memadai seperti LCD, Laboratorium, perpustakaan. Adapun kendalanya yaitu guru-guru senior yang kurang paham dengan teknologi.

Development of Video Based on Pop Up Questions Integrated Religious Character Human Digestive System Materials Nurhidayah Nurhidayah; Jumaeri Jumaeri; Endang Susilaningsih
Jurnal Penelitian Pendidikan IPA Vol. 7 No. SpecialIssue (2021): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v7iSpecialIssue.1055

This study aims to test the validity, practicality, and effectiveness of pop-up questions-based learning videos integrated with religious characters of the human digestive system. The subjects of this study were students of class VIII A and VIII C of MTs Mazro'illah, Lubuklinggau City. This research is a type of research and development (R&D) that uses the ADDIE (Analysis, Design, Development, Implementation, Evaluation) model. The data collection instruments in this study consisted of interview guides, expert validation questionnaires, practicality questionnaires, and test sheets. The results of the research data analysis showed that the experts stated that the three learning videos developed were very valid with an average score of 89.70% for the first video, 91.40% for the second video, and 90.80% for the third video. The learning videos that have been declared valid are then tested on students to find out the practicality of the learning videos developed. The results of the practicality questionnaire showed good responses by students and teachers with an average score of 85 and 84, respectively. The learning videos developed were then implemented for students to determine the effectiveness in aspects of knowledge and attitudes. The test results show that the ability of the students' knowledge aspect is still in the poor category with an average score of 55.20%, while the attitude aspect of students shows different things with an average score of 92.50% which is included in the very good criteria. Based on the results of this study, the pop-up question-based learning video integrated with the religious character of the human digestive system material was declared to be very valid, practical, and effective in the aspect of religious attitudes to be used in learning

Congo Red Dye Adsorption using Magnesium Hydroxide from Seawater Bittern Jumaeri Jumaeri; Akhsanun Nadiyya; Agung Tri Prasetya; Woro Sumarni
Jurnal Kimia Sains dan Aplikasi Vol 25, No 6 (2022): Volume 25 Issue 6 Year 2022
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

The study of Mg(OH)2 from seawater bittern as an adsorbent for Congo red (CR) from an aqueous solution has been performed. This study aimed to determine the effect of pH, contact time, and initial CR concentration on CR adsorption by Mg(OH)2. The adsorption kinetics and isotherms of CR on Mg(OH)2 in an aqueous solution were also studied. The optimum adsorption was obtained at pH 8 within 90 minutes of contact time with an adsorption capacity of 46.3 mg/g for an initial CR concentration of 29 mg/L. The adsorption process followed the Freundlich isotherm model with an n value of 2.579 and the pseudo-second-order kinetic model with a k2 value of 0.0021 g mg−1min−1.

Performance of HDTMA-Br-Modified Indonesian Zeolite as a Drug Carrier Candidate for Diclofenac Sodium Khafidhotun Naimah; Harjono Harjono; Jumaeri Jumaeri; Sri Kadarwati
Jurnal Kimia Sains dan Aplikasi Vol 24, No 3 (2021): Volume 24 Issue 3 Year 2021
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Diclofenac sodium is a non-steroidal anti-inflammatory drug with a relatively short release time. This short release time promotes a more frequent drug consumption and could lead to side effects in the stomach, e.g., gastrointestinal disorders, gastrointestinal bleeding, and gastric ulcers. A drug delivery system with a slow-release activity is one of the promising technologies to control the drug amount released to the stomach. A surfactant-modified natural zeolite as a carrier for diclofenac sodium has been used in this study. This study focused on the preparation, characterization, and slow-release performance of HDTMA-modified natural zeolite as a carrier for diclofenac sodium. The zeolite underwent chemical and physical activation, as well as milling prior to use. It was proven that the zeolite used was dominated by mordenite and clinoptilolite with high stability properties towards acid treatments, as indicated by the XRD patterns. A modification of the zeolite surface using HDTMABr was also successfully performed, indicated by the appearance of peaks at wavenumbers of 2923.05 cm-1 and 2853.39 cm-1 (symmetrical and asymmetrical CH2 strains of HDTMA molecules, respectively) in the FTIR spectra. The synthesized HDTMA-modified natural zeolite also showed an excellent surface property such as surface area, pore-volume, and size, as indicated by the BET-BJH isotherms on the nitrogen adsorption. The slow-release performance of the zeolite-based drug delivery system was studied by investigating the adsorption-desorption behavior of HDTMA-modified zeolite towards diclofenac sodium. The HDTMA-modified zeolite adsorbed the diclofenac sodium of 54.01% at a pH of 7.5, the contact time of 60 min, and the initial concentration of 100 ppm. The adsorbed diclofenac sodium of 73.95% could be released from the HDTMA-modified adsorbent for 8 h, mimicking the time length of drug metabolism in the human body.

Effect of Dolomite Addition on Fly Ash Based Ceramic Membrane to Reduce COD and BOD of Liquid Waste Widiya Aprilianti; F. Widhi Mahatmanti; Mohammad Alauhdin; Jumaeri Jumaeri
Jurnal Kimia Sains dan Aplikasi Vol 24, No 7 (2021): Volume 24 Issue 7 Year 2021
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Ceramic membrane technology plays an essential role in separation fields such as wastewater treatment. Fly ash as a membrane material has proven to be very effective for many separation processes, including water and air purification, as well as industrial and environmental resource recovery. This study aims to develop a microfiltration ceramic membrane based on fly ash with the addition of dolomite. The synthesized ceramic membranes were then characterized using XRD, SEM, and TGA. Ceramic membranes are used to reduce COD and BOD levels in tofu industrial wastewater. The results showed that the value of membrane porosity tends to increase with the addition of dolomite 0% (D0) to 30% (D30). The increase in the porosity value in the membrane was followed by a decrease in the average pore size, namely 1.6994 m at D0 and 1.1730 m at D30. The membrane with 30% dolomite composition has the best mechanical properties with a compressive strength of 35.29 MPa and superior thermal resistance. This is very beneficial for the use of membranes in the long term. Meanwhile, the membrane filtration ability and the ability of the membrane to reduce COD and BOD levels of waste increased with the addition of dolomite from 0% to 30%. However, the decrease in COD and BOD was smaller in the membrane with 45% dolomite. D30 membrane can reduce COD 80% and BOD up to 71.44%. D30 membrane is the most effective fly ash and dolomite composition in forming pores on the membrane with the best COD and BOD reduction performance.

Adsorpsi Metilen Biru oleh Abu Layang Batu Bara yang Teraktivasi Menggunakan Proses Hidrotermal dengan Bantuan Gelombang Mikro Arum Mawar Wati; F Widhi Mahatmanti; Jumaeri Jumaeri; Agung Tri Prasetya
ALCHEMY Jurnal Penelitian Kimia Vol 18, No 1 (2022): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.18.1.50935.58-69

Metilen biru (MB) merupakan pewarna kationik yang paling sering digunakan sebagai zat warna, hal tersebut dapat menyebabkan masalah lingkungan perairan dan bersifat toksik. Abu layang dapat dimanfaatkan sebagai adsorben karena memiliki sifat ramah lingkungan dan kelimpahannya sebagai limbah yang perlu dimanfaatkan. Tujuan penelitian ini adalah untuk mengetahui karakteristik abu layang dan mengetahui kondisi optimum proses adsorpsi MB oleh abu layang yang diaktivasi. Abu layang diaktivasi secara kimia dengan NaOH dan secara fisika menggunakan gelombang mikro (AMW) dan aktivasi hidrotermal dengan bantuan gelombang mikro (AHMW). Hasil karakterisasi menggunakan FTIR, adsorben AMW dan AHMW memiliki gugus fungsi yaitu gugus O‒H pada pita 3435 cm-1 dan 3435,16 cm-1, gugus T‒O‒T (T=Si atau Al) pada pita 10039,20 cm-1 dan 1007,82 cm-1, dan gugus O‒Si‒O atau Al‒O‒Al pada pita 772,5 cm-1 dan 720,62 cm-1. Hasil difraktogram sinar-X menunjukkan puncak yang khas yaitu Quartz (SiO2) pada 2θ 16° dan 21° dan Mullite (3Al2O3.2SiO2) 33° dan 40° pada kedua adsorben. AMW memiliki luas permukaan sebesar 37,87 m2/g dan AHMW sebesar 53,76 m2/g dengan SAA. Kedua adsorben terklasifikasi sebagai material mesopori dengan ukuran diameter pori 2,32 nm dan 19,10 nm. Adsorpsi MB oleh AMW optimum pada pH 9 selama 90 menit, AHMWoptimum pada pH 9 selama 120 menit dengan konsentrasi awal optimum 200 mg/L pada keduanya. Hasil kinetika adsorpsi metilen biru menggunakan AMW dan AHMW mengikuti pola kinetika pseudo orde dua Ho dan McKay dengan nilai k2 masing-masing sebesar 0,0429 dan 0,0116 g mg-1 min‑1. Kapasitas adsorpsi MB menggunakan abu layang tanpa aktivasi sebesar 3,59 mg/g, sedangkan kapasitas adsorpsi MB menggunakan AMW dan AHMW mengikuti pola isoterm Langmuir berturut-turut sebesar 37,87 dan 53,76 mg/g.Methylene Blue Adsorption by Activated Coal Fly Ash Using Microwave-Assisted Hydrothermal Process. Methylene blue (MB) is a cationic dye that is most often used as a dye, that can cause aquatic environmental problems and is toxic. Fly ash can be used as an adsorbent because of its environmentally friendly properties and its abundance as waste that needs to be utilized. The purpose of this study was to determine the characteristics of fly ash and to determine the optimum conditions for the MB adsorption process by activated fly ash. Fly ash is activated chemically with NaOH and physically using microwaves (AMW) and hydrothermal activation with the help of microwaves (AHMW). The results of characterization using FTIR, two adsorbents have functional groups, namely O‒H groups in the 3435 cm-1 and 3435.16 cm-1 bands, T‒O‒T groups (T=Si or Al) in the 10039.20 cm-1 and 1007.82 cm-1, and O‒Si‒O or Al‒O‒Al groups in the bands 772.5 cm-1 and 720.62 cm-1. The results of the X-ray diffractogram showed typical peaks, namely Quartz (SiO2) at 2θ 16° and 21° and Mullite (3Al2O3. 2SiO2) 33° and 40° on both adsorbents. AMW has a surface area of 37.87 m2/g and AHMW is 53.76 m2/g with SAA. Both adsorbents are classified as mesoporous materials with pore diameters of 2.32 nm and 19.10 nm. The optimum adsorption of MB by AMW was at pH 9 for 90 minutes, AHMW was optimum at pH 9 for 120 minutes with the optimum initial concentration of 200 mg/L in both. The results of methylene blue adsorption kinetics using AMW and AHMW followed the pseudo second order kinetic pattern of Ho and McKay with k2 values of 0.0429 and 0.0116 g mg-1min-1. MB adsorption capacity in fly ash without activation was 3.59 mg/g, while its adsorption capacity in AMW and AHMW were respectively 37.87 and 53.76 mg/g, which follow the Langmuir isotherm pattern.

Co-Authors Afwah, Apriliani Arifatul Agung Tri Prasetya Agung Tri Prasetya Agung Tri Prasetya Akhsanun Nadiyya Alfawwazi, Abdul Fattah Alighiri, Dante Amique, Iqnatu Nazila Ani Rusilowati Anita Rahayu Annisa, Riska Nurfirda Antonius Tri Widodo Arum Mawar Wati Budhy Kurniawan Cepi Kurniawan Darmadinata, Mariyanti Darmadinata, Mariyanti Darojah, Lia Inarotut Darojah, Lia Inarotut Deni Mustika Deninta Andara Perdana E Kusumastuti, E Edy Cahyono Eko Sri Kunarti Elfrida Ratnawati Ella Kusumastuti Ella Kusumastuti, Ella Endang Susilaningsih Endang Susilaningsih Ersanghono Kusumo, Ersanghono Etty Soesilowati Evalisa Apriliani, Evalisa F Widhi Mahatmanti G, Agnesya Putri Habibah, Febrina Nur Haditya, Ervan Bagus Hakim, Yanuar Hakim, Yanuar Harjito - Harjono Harjono Hastuti, Vidya Dwi Hastuti, Vidya Dwi Holyness Nurdin Singadimedja Isbullah, Isbullah Ismi Inayati, Ismi Istiana, shofa Jayanti, Yeni Fitriana Jayanti, Yeni Fitriana Juari Santosa Kamila, Naila Faza Kasmadi Imam Supardi Khafidhotun Naimah Khasanah, Ni'matul Khasanah, Nimatul Khavilla, Vidya Putri Latifah Latifah Latifah Latifah Lubis, Syafrina Yani Machiril, Dhonirul Machiril, Dhonirul Masrukan Masrukan Megasari, Nofita Megasari, Nofita Mohammad Alauhdin, Mohammad Munazat, Dicky Mutiara Dewi Rukmana, Mutiara Dewi Naila Faza Kamila Nanik Wijayati Ningrum, Ananda Nurmalia Kusuma Ningrum, Lis Setiyo Ningrum, Lis Setiyo Nino Rinaldi nurfainzani, pratiwi nurfainzani, pratiwi Nurhidayah Nurhidayah Patricia, Amelinda Diana Patricia, Amelinda Diana Pratiwi Dwi Jananti, Pratiwi Dwi Putri, Witha Berlian Qoyyima, Diana Rahayu, Endah Fitriani Rahmawati, Septiani Yuni Resti, Ade Riyanto, Ari Fajar Rusiyanto Rusiyanto, Rusiyanto S Mursiti Saadah, Nelis Savitri Savitri, Savitri Setyadji, Much. Sigit Priatmoko Sri Haryani Sri Juari Santosa Sri Juari Santosa Sri Kadarwati Sri Wahyuni SRI WARDANI Sucipto, Lukman Sulistyani, Martin Sulistyaningsih, Triastuti Sunarto, Wisnu Sutarno Sutarno Sutarno Sutarno Triastuti Sulistyaningsih Tunjungsari, Faricha Tunnisa, Tasqia Tunnisa, Tasqia Ulya, Isnaeni Nurul unnes, krisnawati kimia unnes, krisnawati kimia Uswatun Hasanah VH Putranto, VH w. Astuti w. T.P. Lestari Wahyu Rahmawati, Aliftia Wahyu Rahmawati, Aliftia Wahyuni, Promes Sari Wardani, Deta Sri Warlan Sugiyo Wawan Rustyawan Wawan Wawan Widiya Aprilianti Winning Kusuma, Alberto Krishna Ksatria Winning Kusuma, Alberto Krishna Ksatria Wisnu Sunarto Woro Sumarni Zulichatun, Siti - Zulichatun, Siti -

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