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ANALISIS KANDUNGAN DARI PASIR PANTAI PEH PULO KABUPATEN BLITAR MENGGUNAKAN XRF DAN XRD Muhammad Roy Asrori; Yana Fajar Prakasa; Dinar Rachmadika Baharintasari; Sumari Sumari
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 4 No 2 (2019): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Telah dilakukan penelitian yang berjudul analisis kandungan mineral pasir pantai Peh Pulo Kabupaten Blitar menggunakan XRF dan XRD. Penelitian ini bertujuan untuk mengetahui bagaimana persentase kandungan mineral dalam pasir pantai Peh Pulo Kabupaten Blitar. Instrumen yang digunakan adalah XRF dan XRD dimana sampel ditempatkan dalam sample holder kemudian diradiasi dengan sinar X. Berdasarkan hasil analisis kandungan unsur dan mineral dalam pasir pantai peh Pulo maka dapat disimpulkan bahwa pasir pantai Peh Pulo memiliki potensi untuk dijadikan sebagai bahan dasar pembuatan material nanoteknologi. Berdasarkan hasil analisis XRF menunjukkan adanya kandungan CaO sebesar 94,46 % dan hasil analisis XRD menunjukkan adanya kandungan mineral jenis Aragonite

Analisis Kandungan Mineral Pasir Pantai Bajul Mati Kabupaten Malang Menggunakan XRF dan XRD Sumari Sumari; Yana Fajar Prakasa; Muhammad Roy Asrori; Dinar Rachmadika Baharintasari
Jurnal Kimia Fullerene Vol 5 No 2 (2020): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v5i2.154

Mineral exploration in Indonesia has not been evenly distributed, so a study with title analysis of the sand mineral content of Bajul Mati Malang Regency was carried out using XRF and XRD. The aims of this study to determine the percentage of mineral that containing in the sand of Bajul Mati beach in Malang Regency. The instruments used XRF and XRD where the samples were placed in a sample holder and irradiated with X-rays then. The result of analysis of mineral content and metal oxide in Bajul Mati beach sand showed that the beach sand of Bajul Mati has the big potential to be used as a base for making nanomaterials. The results of analysis of XRF showed that the content of SiO2 was 46.7% and the results of analysis of XRD showed that the SiO2 mineral has the quartz phased. Bajul Mati beach sand has the potential to be a source of mineral material.

Sono-hydrolysis of banana stem midrib using HY-zeolite from natural sand-based silica as a catalyst Sumari Sumari; Aman Santoso; Muhammad Roy Asrori; Yana Fajar Prakasa; Dinar Rachmadika Baharintasari
International Journal of Advances in Applied Sciences Vol 11, No 4: December 2022
Publisher : Institute of Advanced Engineering and Science

Banana stem midrib has the potential as a glucose source through catalytic hydrolysis assisted by ultrasonic (sono-hydrolysis). Besides, natural sand-based silica is the potential as raw material for zeolite synthesis. The purpose of the study was to do two things: i) characterize HY-zeolite made from natural sand-based silica and ii) determine whether HY-zeolite is effective for sono-hydrolysis of banana stem midrib. There was a total of four processes that were carried out, including i) the extraction of silica, ii) the synthesis of HY zeolite, iii) the hydrolysis process, and iv) the glucose content test. The results of the study were gained two things: i) The findings of X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) on HY-zeolite are 2.3 Si/Al, obtained 2 theta and d-spacing data similarities for HY-zeolite, and formed T-O-T, O-T-O (T=Si/Al), and Si-OH groups respectively; and ii) HY-zeolite with ultrasonic was effective for hydrolyzing cellulose into glucose at maximum temperature and time, 55 °C and 6 hours.

Silica extract from Malang beach sand via leaching and sol-gel methods Sumari Sumari; Muhammad Roy Asrori; Yana Fajar Prakasa; Dinar Rachmadika Baharintasari; Aman Santoso
International Journal of Advances in Applied Sciences Vol 12, No 1: March 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v12.i1.pp74-81

Many silica minerals are found in beach sands. One of its beach sands is in Bajul Mati beach sand which contains high silica. The silica can be extracted using existing methods, but it is less environmentally friendly. In this research, the extracting process of silica from the sand of Bajul Mati beach (South of Java-Indonesia) has been carried out through a method that is low-cost and more environmentally friendly. The purpose of this study was to characterize extracted silica with instrumentation results and economic analysis. The method of extracting silica from beach sand was via leaching and sol-gel methods: i) leaching with 7M HCl,ii) the formation of clear sodium silicate solution (Na2O.SiO2),iii) sol-gel: sodium silicate solution titrated with oxalic acid (H2C2O4) 1 M until pH 6 was obtained and silicite Si(OH)4 was formed, and iv) characterization with X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and scanning electron microscopy (SEM) with economic analysis. The result showed that extracted silica has a cristobalite structure based on XRD analysis. The purity of silica (% Wt Si) reached 93.9% based on XRF analysis. FTIR analysis has identified silanol, siloxic, and siloxane groups. The SEM analysis shows that silica (SiO2) particles tend to form agglomerations about ∼1 μm. In addition, economic analysis results showed that this method will support implementation in the future, so silica has been produced by this developed method.

Implementation of PDCA Metacognitive Learning Strategies to Metacognitive Abilities, Science Process Skills, and Student Learning Outcomes Yana Fajar Prakasa
Jurnal Pendidikan Profesi Guru Vol 1 No 1 (2023): FEBRUARY 2023
Publisher : Program Studi Pendidikan Profesi Guru Fakultas Tarbiyah dan Keguruan UIN Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.2023/jppg.v1i1.2439

Students in class XI MIPA often have difficulty learning chemistry in acid and alkaline solutions because the learning process is dominated by lecture and rote learning. The use of PDCA metacognitive strategies (SM-PDCA) in the learning process can help students improve their metacognitive abilities to understand abstract concepts. This study aims to determine the implementation of learning, metacognitive abilities, science process skills, and cognitive learning outcomes of students in the SM-PDCA experimental class and expository control class (Ep), as well as the effect of applying learning. This study used a quasi-experimental design (Quasi Experiment Design) with Nonequivalent Control Group Design involving class XI MIPA as the experimental class and class XI MIPA as the control class. The results showed that: (1) the implementation of the learning process in the SM-PDCA class was 96.97% and the Ep class was 97.61% in the very good category; (2) the metacognitive abilities in the SM-PDCA class were in the high category 28.125%, while in the Ep class the high category was 6.25%, the science process skills in the SM-PDCA class were in the very high category 34.375%, while in the Ep class the category was very high 6.25 %, and the cognitive learning outcomes of students in SM-PDCA class with an average of 88.22 and Ep class of 77.64; (3) there is an effect of learning with SM-PDCA on metacognitive abilities, science process skills, and cognitive learning outcomes of students.

Implementation of PDCA Metacognitive Learning Strategies to Metacognitive Abilities, Science Process Skills, and Student Learning Outcomes Yana Fajar Prakasa
Jurnal Pendidikan Profesi Guru Vol. 1 No. 1 (2023): FEBRUARY 2023
Publisher : Program Studi Pendidikan Profesi Guru Fakultas Tarbiyah dan Keguruan UIN Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.2023/jppg.v1i1.2439

Students in class XI MIPA often have difficulty learning chemistry in acid and alkaline solutions because the learning process is dominated by lecture and rote learning. The use of PDCA metacognitive strategies (SM-PDCA) in the learning process can help students improve their metacognitive abilities to understand abstract concepts. This study aims to determine the implementation of learning, metacognitive abilities, science process skills, and cognitive learning outcomes of students in the SM-PDCA experimental class and expository control class (Ep), as well as the effect of applying learning. This study used a quasi-experimental design (Quasi Experiment Design) with Nonequivalent Control Group Design involving class XI MIPA as the experimental class and class XI MIPA as the control class. The results showed that: (1) the implementation of the learning process in the SM-PDCA class was 96.97% and the Ep class was 97.61% in the very good category; (2) the metacognitive abilities in the SM-PDCA class were in the high category 28.125%, while in the Ep class the high category was 6.25%, the science process skills in the SM-PDCA class were in the very high category 34.375%, while in the Ep class the category was very high 6.25 %, and the cognitive learning outcomes of students in SM-PDCA class with an average of 88.22 and Ep class of 77.64; (3) there is an effect of learning with SM-PDCA on metacognitive abilities, science process skills, and cognitive learning outcomes of students.

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