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All Journal Bumi Lestari Jurnal Teknosains Jurnal Matematika & Sains Science and Technology Indonesia Jurnal Pengabdian UntukMu NegeRI International Journal of Social Service and Research Indonesian Journal of Physics (IJP) Bulletin of Chemical Reaction Engineering & Catalysis
Fitri Suryani Arsyad
Department Of Physics, Faculty Of Mathematics And Natural Sciences, Universitas Sriwijaya
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences

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Comparison of Bentonite Characteristics Before and After be Used as Coagulan of Liquid Tofu Waste Ayu Yuliana; Risfidian Mohadi; Fitri Suryani Arsyad; Safaruddin Safaruddin
International Journal of Social Service and Research (IJSSR) Vol. 3 No. 2 (2023): International Journal of Social Service and Research (IJSSR)
Publisher : CV. Ridwan Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/ijssr.v3i2.251

Abstract

Bentonite obtained from East Java is a Ca-Bentonite type which has been activated with H2SO4 20% based on the XRF results which showed CaO level of 4.15%. Bentonite can be reused after being applied as a coagulant and its based on the results of the Bentonite XRD diffractogram pattern before and after being applied as a coagulant that doesn’t have a significant change of 2q, including the 2q montmorillonite at 21,98? (516,42 cps), 35,47? (384,43 cps), 62,26? (100,66 cps) to 22? (436,22 cps), 35,47? (326,46 cps), 62,79? (65,79 cps) and 2q of quartz (SiO2) at 26,5? (607,56 cps) to 26,53? (537,65 cps). The optimum coagulation conditionsis when height of bentonite is 900 mg in 50 mL of liquid tofu waste pH 2, its can remove turbidity by 98% and TSS by 84.6%.
Highly Efficient Catalytic Oxidative Desulfurization of Dibenzothiophene using Layered Double Hydroxide Modified Polyoxometalate Catalyst Nur Ahmad; Muhammad Badaruddin; Nova Yuliasari; Fitri Suryani Arsyad; Aldes Lesbani
Bulletin of Chemical Reaction Engineering & Catalysis 2022: BCREC Volume 17 Issue 4 Year 2022 (December 2022)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.17.4.16373.821-830

Abstract

Layered double hydroxide-modified polyoxometalate (ZnAl-PW) was prepared and used for the oxidative desulfurization of dibenzothiophene. XRD patterns of ZnAl-LDH and PW are still present in ZnAl-PW. The bands of ZnAl-PW in wavenumber 3276, 1637, 1363, 1050, 952, 887, and 667 cm-1. The typical surface of ZnAl-LDH and ZnAl-PW can be observed not smooth in different sized with irregular shapes. The average diameter distribution of ZnAl-LDH and ZnAl-PW is 14 nm and 47 nm, respectively. For dibenzothiophene with 500 ppm, conversion on ZnAl-LDH, PW, and ZnAl-PW was 94.71%, 95.88%, and 99.16%, respectively. Conversion of dibenzothiophene in line with the acidity of ZnAl-LDH, PW, and ZnAl-PW were 0.399, 1.635, and 3.023 mmol/gram, respectively. The most effective catalyst dosage for the desulfurization of dibenzothiophene on ZnAl-LDH, PW, and ZnAl-PW is 0.25 g. The unchanged dibenzothiophene concentration indicates a heterogeneous system. ZnAl-LDH, PW, and ZnAl-PW are truly heterogeneous catalysts. After 3 cycles of oxidative desulfurization, the percentage conversion of dibenzothiophene on ZnAl-LDH, PW, and ZnAl-PW were 77.42 %, 65.98%, and 86.38%, respectively. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
The Utilization of Mg-Al/Cu as Selective Adsorbent for Cationic Synthetic Dyes Arini Fousty Badri; Neza Rahayu Palapa; Risfidian Mohadi; Mardiyanto Mardiyanto; Fitri Suryani Arsyad; Aldes Lesbani
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 4 Year 2021 (December 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.4.11043.696-706

Abstract

Mg-Al-LDH is a chemical compound produced through co-precipitation technique and modified with Cu(NO3)2.6H2O to form Mg-Al/Cu. However, the research on the capability of these compounds for adsorbing mixtures of cationic dyes as well as malachite green (MG), methylene blue (MB), and Rodhamine-B (Rh-B) has not been carried out. Therefore, this research aims to determine the performance of Mg-Al-LDH and Mg-Al/Cu for removing cationic dyes. The materials used were characterized by using XRD powder, FT-IR, and N2 adsorption desorption. The Adsorption process was conducted by batch system and several effects were investigated, such as kinetic parameter, isotherm, and the temperature condition. The stability feature of Mg-Al-LDH and Mg-Al/Cu was obtained from the regeneration process in the five cycles. The results presented that Mg-Al/Cu was effectively produced, which was indicated by the formation of layer at 10.792° (003), 22.94° (006), 35.53° (112), 55.78° (110), and  56.59° (116). Mg-Al-LDH and Mg-Al/Cu were found to adsorbed MG than the other cationic dyes with adsorption capacity of 68.996 mg/g and 104.167 mg/g, respectively. The unique properties of Mg-Al/Cu includes, structural stability towards the reuse of adsorbent subsequently for five times, without significant decrease of adsorption capacity. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Pemasangan Modem Detektor Gempa Ekonomis di Krui, Kabupaten Pesisir Barat, Provinsi Lampung berbasis Sensor Getaran Khairul Saleh; Menik Ariani; Fitri Suryani Arsyad; Erry Koriyanti; Fiber Monado; Idha Royani; Assaidah, Assaidah
Jurnal Pengabdian UntukMu NegeRI Vol. 10 No. 1 (2026): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v10i1.11202

Abstract

Telah diimplementasikan modem detektor gempa di kota Krui, Kabupaten Pesisir Barat, Provinsi Lampung pada Bulan Agustus 2025. Wilayah yang berada di area ring of fire ini memerlukan banyak sensor untuk mendeteksi gempa agar mitigasi bencana dapat dilaksanakan dengan baik. Oleh karena itu, riset yang dilaksanakan oleh Jurusan Fisika dengan output berupa modem detektor gempa berbasis sensor getaran dipasang di dua lokasi berbeda di Krui. Penentuan lokasi tersebut ditetapkan oleh tim bekerja sama dengan Badan Penanggulangan Bencana Daerah (BPBD) Krui setelah melakukan serangkaian survey di beberapa tempat. Setelah lokasi pemasangan diputuskan, BPBD mengerahkan komunitas nelayan di sekitar Pantai Walur dan warga di Kampung Sunda untuk membantu tim dalam proses instalasi modem dan sel surya yang menjadi sumber tenaga listrik mandiri bagi detektor. Data yang diukur oleh sensor pada modem dapat dipantau melalui website yang telah dibangun oleh tim riset Jurusan Fisika, FMIPA, Universitas Sriwijaya.
Co-Authors Agus Subagio Aldes Lesbani Aldes Lesbani Aldes Lesbani Aldes Lesbani Aldes Lesbani Aldes Lesbani Alfan Wijaya Alfan Wijaya Amalia Amalia Amiruddin Supu Amri Arini Fousty Badri Assaidah Assaidah, Assaidah Ayu Yuliana Budi Mulyanti Deni Shidqi Khaerudini Dilla M Edi Supriyanto Erni Salasia Fitri Erry Koriyanti Erry Koriyanti Fiber Monado Heri Sutanto I Wayan Sukarjita Idha Royani Idha Royani Idha Royani Jasruddin Daud Malago Jaya Edianta Jorena Jorena Khairul Saleh M. Barmawi Maman Budiman Mardiyanto Mardiyanto Marzuki Naibaho Mauizatul Hasanah Menik Ariani Mikrajuddin Abdullah Moehamad Barmawi Mohamad Barmawi Muhammad Badaruddin Nanang Fauzi Nisya Ulmiah Nova Yuliasari Nur Ahmad Nur Ahmad Pepen Arifin Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Safaruddin Safaruddin Sukirno Sukirno Toto Winata Toto Winata Tuty Emilia Agustina