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All Journal Jurnal Periodic Jurusan Kimia UNP Jurnal Riset Kimia Jurnal Zarah Jurnal Penelitian Pendidikan IPA (JPPIPA) Al-Kimia ALCHEMY Jurnal Penelitian Kimia JURNAL PENDIDIKAN TAMBUSAI Jurnal Ilmiah Pendidikan Scholastic Global Conference Index Pelita Eksakta Acta Chimica Asiana Indonesian Journal of Chemical Science and Technology CHEDS: Journal of Chemistry, Education, and Science Jurnal Pijar MIPA Tsaqofah: Jurnal Penelitian Guru Indonesia MASALIQ: Jurnal Pendidikan dan Sains International Journal of Innovation in Mechanical Engineering and Advanced Materials Ta'dib Jurnal Pendidikan MIPA
Budhi Oktavia
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Religion Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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CHEMISTRY ICT AND LABORATORY EQUIPMENT MANIPULATIVE SKILL TRAINING FOR CHEMISTRY TEACHERS IN EAST AGAM Miftahul Khair; Budhi Oktavia; Guspatni Guspatni; Tarmizi Tarmizi
Ta'dib Vol 14, No 1 (2011)
Publisher : Universitas Islam Negeri Mahmud Yunus Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31958/jt.v14i1.191

Abstract

In general, schools in eastern Agam Regency have not yet making use optimal computer technology in learning process. Furthermore, limited innovation has been made dealing with the limitation of chemical laboratory work materials. To answer the problem, training on making use of ICT in Chemistry subject and manipulative skill laboratory equipments for Chemistry teachers throughout eastern Agam Regency was conducted.Kata kunci: ICT, manipulative skill, laboratory
Module Development on Basic Laws of Chemistry Based on the 5E Instructional Model to Improve Science Process Skills in Senior High School Fitrah Mey Harmi Siregar; Rahadian Zainul; Andromeda; Budhi Oktavia; Amalia Putri Lubis
Jurnal Penelitian Pendidikan IPA Vol 9 No 7 (2023): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i7.4343

Abstract

The module is one of the teaching materials that is arranged as a whole and systematically. Modules based on learning models can change learning patterns from teacher center to student center. One of the learning models developed specifically for subject matter in the field of science is 5E instructional. The 5E Instructional Model consists of 5 stages namely engagement, exploration, explanation, elaboration and evaluation. The purpose of this study was to develop an instructional module based on 5E chemical laws to improve the process skills of science students. The type of research conducted is research & development (R&D) with the ADDIE development model. The results obtained for the validity of the construct and content were 0.89 and 0.91 with the valid category. Based on the results of the teacher and student response questionnaires, an average practicality score of 86.96% and 86.10% was obtained in the very practical category. The results of the effectiveness test conducted in the experimental and control classes showed that the N-gain value for the experimental class was higher than the control class, namely 0.84 and 0.79. Based on the results of the t-test on student learning outcomes, it was found that tt < th means that the learning outcomes of classes using the 5E instructional module were significantly higher compared to classes that did not use the 5E instructional module. Therefore, it can be said that the 5E-based basic chemistry law module is valid, practical, and effective. The effectiveness of the developed module is seen from the learning outcomes of students and science process skills, so that this module can already be used in the learning process.
Desorpsi Anion Kromat (CrO42-) dari Adsorben Silika Mesopori Termodifikasi DMA (Dimethylamine) Septya Anggraini; Budhi Oktavia; Indang Dewata; Fajriah Azra
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.118120

Abstract

Mesopore silica modified with dimethylamine is one of the adsorbents used as a functional group for anion exchange and anion separation. Mesopore silica with the addition of amine compounds can be used to see the absorption capacity of silica against chromate anions using the column method. The absorption capacity of the chromate anion is 0.8609 mg/g with an absorption percentage of 99.3%. If the adsorption process has been maximized, the surface of the adsorbent is saturated or no longer able to absorb the adsorbate and equilibrium occurs, it can be continued with the desorption process. The factor used to see this desorption ability is the type of desorption, namely hydrochloric acid (HCl) with a release of 0.4061 mg of chromate anion with a desorption percentage of 95.3% and an optimum concentration of 0.1 M HCl with a release of 0.4287 mg chromate anion with a desorption percentage of 100%.
Uji Kondisi Optimum Desorpsi Anion Fosfat pada Silika Mesopori Termodifikasi DMA (Dimethylamine) Hainunnisa Syafitriza; Budhi Oktavia; Hary Sanjaya; Hardeli Hardeli
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.118092

Abstract

Mesoporous silica is solid silica having a pore size of 2-50 nm. Silica modification is done to increase the ability of silica to absorb anions, one of which is phosphate anion. The modifier compound used is dimethylamine. Silica and dimethylamine can bind with the addition of a linking compound, namely GPTMS. This modified silica can be used to adsorb phosphate anions to see the absorption of silica against phosphate anions. Phosphate ion adsorption using silica has an adsorption capacity of 0.0172 mg/g with an absorption percentage of 88.09%. Desorption with hydrochloric acid obtained a desorbed phosphate concentration of 0.773 mg/L with a desorption percentage of 89.02% while using sulfuric acid the desorbed phosphate concentration was 0.437 mg/L with a desorption percentage of 48.81%. The concentration variations of hydrochloric acid were 0.010 M, 0.025 M, 0.050 M, 0.075 M, 0.10 M, 0.15 M and 0.20 M. The maximum desorption result at 0.1 M concentration was 0.0086 mg with a percentage of 100%.
Desorpsi Anion Klorida (Cl-) Dari Adsorben Silika Mesopori Template CTAB (Cetiltrimetilammoniumbromida) Termodifikasi Dimethylamine Fadhilatu Zikra; Budhi Oktavia; Ananda Putra; Desy Kurniawati
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Mesopore silica was prepared using sodium silica as a precursor and CTAB as a templating agent. However, silica has limitations in adsorption and desorption of chloride anions. Therefore, it is necessary to modify it to improve the action of mesopore silica. This study used DMA (dimethylamine) as a modifier with glycidoxypropyltrimethoxysilane (GPTMS) linking compound. Adsorption was carried out by injecting the adsorbate solution into the column containing the adsorbent at pH 7, and the optimum concentration was 20 mg/L. Furthermore, desorption was carried out by comparing the best desorption agents using acid desorption agents, namely nitric and sulfuric acids. The study showed that the percentage of nitrate desorption (95,29%)> sulfate (47,64%). After obtaining the best type of desorbing agent, desorption was carried out using nitrate with a concentration variation of (0,02; 0,04; 0,06; 0,08; 0,1) M. The optimum conditions for desorption of chloride anions on the modified mesoporous silica adsorbent were at 0,06 M.
Penentuan Kondisi Optimum Desorpsi Anion Nitrit Dari Adsorben Silika Mesopori Termodifikasi DMA (Dimethylamine) Deni Marlina; Budhi Oktavia; Sri Benti Etika; Syamsi Aini
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.118085

Abstract

Mesoporous silica is a solid silica having a pore size of 2-50 nm. Mesoporous silica can be immobilized to the surface. Modification of mesoporous silica with dimethylamine aims to modify amine compounds. Mesoporous silica with the addition of amine compounds reacted with GPTMS can be used as nitrite anion adsorption to see the absorption of silica to nitrite anions using the column method, the adsorption capacity of nitrite anions is 0.0182 mg/g with an absorption percentage of 96.71%. Then the desorption process was carried out, the factor used to see the desorption ability was the type of desorption, namely hydrochloric acid (HCl) with the release of 0.0071 mg of nitrite anion from 0.0085 mg of nitrite anion that was absorbed and the percentage of desorption was 83.52% and a concentration factor with the optimum concentration of 0.15M HCl with the release of 0.0091 mg of nitrite anion with 100% desorption percentage.
Pengaruh pH dan Konsentrasi Terhadap Penyerapan Ion Logam Pb2+ Menggunakan Kulit Buah Matoa (Pometia pinnata) Deva Indriyani; Edi Nasra; Budhi Oktavia; Hesty Parbuntari; Desy Kurniawati
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.117509

Abstract

This research study was to determine the optimum conditions for the absorption of Pb2+ metal ions using the matoa fruit peel (Pometia pinnata) using the batch method with variations in pH, concentration, particle size, contact time and stirring speed. The results of the study showed that the optimum conditions for the absorption of Pb2+ occurred at pH 5, a concentration of 300 ppm with an absorption capacity of 34.015 mg/g. Pb2+ metal adsorption isotherm with matoa skin biosorbent (Pometia pinnata) tends to follow the Freundlich isotherm equation with a determinant coefficient (R) of 1.Keywords : Biosorption, Pb2+ metal, Pometia pinnata, Batch method
Penentuan Kondisi Optimum Desorpsi Anion Nitrat (NO3-) pada Silika Mesopori Termodifikasi Dimetilamina (DMA) Dipnorita Retno; Budhi Oktavia; Indang Dewata; Miftahul Khair
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.118091

Abstract

Mesoporous silica is an inorganic materials that has high potential to be applied in various industrial fields, one of its application is the adsorption method. To maximize the adsorption of mesoporous silica, modification of the silica surface was carried out with the addition of amine compounds. The amine compound used as a modifier is dimethylamine (DMA). Mesoporous silica which has been modified with dimethylamine is used in the nitrate anions adsorption process by the column method. The adsorption capacity of the nitrate anion is 0.0917 mg/g. After being adsorbed, the desorption process was carried out to release the adsorbed nitrate anions again. From the desorption process, it was found that HCl proved to be the best desorption agent used on nitrate anions. The optimum concentration of HCl was 0.15 M with the number of  nitrate anions desorbed as much as 0.0459 mg with a 100% desorption percentage.
Optimasi Adsorpsi Ion Co2+ Menggunakan Silika Gel-GPTMS (Glycidoxyproyltrimethoxysilane) Dimodifikasi dengan Sulfonat Fitriningsih, Annisa; Oktavia, Budhi
Jurnal Pendidikan Tambusai Vol. 7 No. 3 (2023): Desember 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v7i3.10429

Abstract

Co2+ adalah ion logam berat yang larut dalam air sehingga dapat mencemari lingkungan jika konsentrasi diatas 0,4 mg/L. Metode yang paling umum digunakan untuk mengurangi kadar ion logam adalah adsorpsi karena secara konseptual lebih murah dan sederhana. Pada adsorpsi diperlukannya adsorben sebagai zat penyerapnya. Silika gel merupakan salah satu zat yang sering digunakan sebagai adsorben dalam metode adsorpsi. Namun kapasitas penyerapan silika gel dalam menyerap ion logam rendah, sehingga sering dilakukan modifikasi untuk meningkatkan kapasitas penyerapannya dalam menyerap ion logam. Penelitian ini dilakukan untuk meningkatkan kapasitas penyerapan silika gel dalam menyerap ion logam dengan cara memodifikasi dengan garam sulfonat. Modifikasi silika gel dengan garam sulfonat dilakukan dengan GPTMS sebagai senyawa penghubung. Adsorpsi dilakukan pada berbagai variasi pH dan waktu kontak untuk melihat kondisi optimum Silika Gel-GPTMS-Sulfonat dalam menyerap ion Co2+. Hasil penyerapan ion Co2+ pada Silika Gel-GPTMS-Sulfonat optimum pada pH 3 dan waktu kontak 30 menit.
Optimasi Adsorpsi Ion Logam Ag+ Pada Silika Gel GPTMS Termodifikasi Gugus Sulfonat Anggraini Mardhatillah, Leonyta; Oktavia, Budhi
Jurnal Pendidikan Tambusai Vol. 7 No. 3 (2023): Desember 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v7i3.10539

Abstract

Tujuan dari penelitian ini adalah untuk mendapatkan kondisi optimum dan kapasitas penyerapan Silika-GPTMS termodifikasi sulfonat dalam mengadsorpsi ion Ag+ serta isoterm adsorpsinya. Proses adsorpsi dilakukan dengan menggunakan metode batch untuk proses adsorpsi dengan variasi pH, waktu kontak, dan konsentrasi. Hasil yang diperoleh sesuai dengan penelitian yang telah dilakukan yang menunjukkan adsorpsi silika gel GPTMS termodifikasi sulfonat terhadap penyerapan ion logam Ag+ pada kondisi optimum pada pH 4, waktu kontak selama 30 menit. Kapasitas penyerapan sebelum modifikasi sebesar 0,7 mg/g pada persentase penyerapan 24%, sedangkan setelah modifikasi kapasitas penyerapan sebesar 1,58 mg/g pada persentase penyerapan 53,7%. Mekanisme adsorpsi ion logam perak menggunakan silika-GPTMS-sulfonat mengikuti persamaan isoterm Langmuir dengan nilai R2 = 0,9646.
Co-Authors Afifi, Rayhanil Afrilia, Yoni Agustiya, Sabay Ahmad Fauzi Ali Amran Alizar Alizar, Alizar Amalia Putri Lubis Ananda Putra Andreas Difa Andromeda Anggraini Mardhatillah, Leonyta Anisa Nahari Auzakiyah, Sabella Ayu Azizah Bahrizal Bahrizal Berlian, Syakhinah Burma, Resna Chindikia, Ilmy Deasy Liestianty Delfitri Delfitri Deni Marlina Desy Kurniawati DESY KURNIAWATI Desy Kurniawati Deva Indriyani Devita Efri Dewi Kristina Dipnorita Retno Dwi Agustini, Dwi Dwi Putri, Vika Trisna DWI RAMADHANI Dzakma Putri Alsa Edi Nasra Elvina Elvina Elvina Yulistia Erwan Emmilya Febri Marthin Fadhilatu Zikra Fahilatul Syukro Fajriah Azra Firmansyah Khairul Kamal Fitrah Mey Harmi Siregar Fitri Amelia Fitriningsih, Annisa Guspatni Guspatni Habibur Rahman Dafnaz Hafis, Muhamad Hainunnisa Syafitriza Hanna Salwa Putri Hardeli Hardeli Hardeli Hardeli Hardeli Harmaiyani, Risky Harnas, Dolla Mulyana Hary Sanjaya Hary Sanjaya Hellena Ditasya Hesty Parbuntari Ibrahim Rahmat Illa Ramadhani Indang Dewata Isra Hayati Kauri, Desrike Khairani - Khairani - Latisma Latisma Ma’a, Yustini Masrid Pikoli Maulana, Febrina Mawardi Meri Novia Nurman Miftahul Khair Miftahul Khair Miftahurrahmi, Miftahurrahmi Minda Azhar Muhammad Amin Muhammad Farhan Mulia, Melindra Mutiara Oksyarni Nadia Nahdiah Amin Nella Aulia Putri Nilu Gussarsi Nizar, Umar Kalmar Nofri Yuhelman Nur Hafni Hasibuan Nuzulia Rahma Yona Parbuntari, Hesty Patricia Helena Pebriani Pebriani Pernadi, Niza Lian Putra, Ananda Putri Fatimah Putri Permatasari, Putri Putri, Reza Athia Putri, Yunisa Anugrah Putwi Ayu Faradila Rahadian Zainul Rahardian Z Rahmi, Fathaniah Raviqa Randy Lesmana Putra Rela Faradina Reviana Ervita Riga, Riga Rini Anggraini Rita Sundari Riva Silvia Romy Dwipa Yamesa Away Sabrina, Joya Sari, Trisna Kumala Septya Anggraini Setiowati, Fiqih Sekar Sherly Kasuma Warda Ningsih Sherly Kasuma Warda Ningsih Sintha Hafizhah Yonel Siska Maharani Sri Benti Etika Sri Benti Etika Sri Teguh Priharti Sundari, Rita Suryelita . Syamsi Aini Syifa Rahma Ayunda Takdib, Manajer Jurnal Tarmizi Tarmizi Tarmizi Tarmizi Trihanto Setiadi Trisna Kumala Sari Ulianas, Alizar Umar Kalmar Nizar Umar Kalmar Nizar Usman Bakar Visca Alisia Arianti Vitratul Wirza Vivi Chaniasi Warni Arfin Wira Ayuriza Yani Puspita Yani Yanti, Desvila Ramadha Yerimadesi yuda pratama Yulia Mona Liza Yunisya, Dinda Yustini Ma’a Zulmariko