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All Journal VALENSI CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Jurnal Kimia (Journal of Chemistry) CHEMISTRY PROGRESS International Journal of Science and Engineering (IJSE) Jurnal Penelitian Sains (JPS) Jurnal Kedokteran Brawijaya Jurnal Matematika & Sains Bulletin of Chemical Reaction Engineering & Catalysis The Journal of Pure and Applied Chemistry Research AGRIVITA, Journal of Agricultural Science Jurnal Penelitian Sains (JPS) IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) JPSriwijaya Indonesian Journal of Chemical Science Science and Technology Indonesia Jurnal Penelitian Sains Indonesian Journal of Chemistry Communications in Science and Technology IJEMS (Indonesian Journal of Environmental Management and Sustainability) Riau Journal of Empowerment Molekul: Jurnal Ilmiah Kimia Sains dan Matematika SRIWIJAYA JOURNAL OF ENVIRONMENT Makara Journal of Science Makara Journal of Technology Aceh International Journal of Science and Technology Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia Bulletin of Chemical Reaction Engineering & Catalysis Indonesian Journal of Material Research Bumi: Jurnal Hasil Kegiatan Sosialisasi Pengabdian Kepada Masyarakat
Aldes Lesbani
Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Public Health Social Sciences

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Comparison of LDH-Organic/Inorganic Compound Modified Materials as Adsorbents for Heavy Metal Adsorption: Characteristic Structure and Adsorption Mechanism Normah, Normah; Lesbani, Aldes
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 2 Year 2024 (August 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20160

Abstract

This study modified layered double hydroxide (LDH) with organic compounds in hydrochar made from rambutan peels (prepared by hydrothermal method) and polyoxometalate compounds (tipe Keggin K4[ -SiW12O40].nH2O compound and prepared by sol-gel method). The synthesis of modified material was conducted through the coprecipitation method. The material was then applied as an adsorbent for Fe²⁺ ions. The material's properties were analyzed using XRD (X-ray diffraction), FT-IR (Fourier-transform infrared spectroscopy), and BET surface area analysis. The physicochemical characteristics of the modified material, a combination of the pure LDH and hydrochar/polyoxometalate compounds, will influence the adsorption results of Fe²⁺ metal ions. Furthermore, its application as an adsorbent was analyzed through kinetic and isotherm parameters, which were found to follow the pseudo-first-order (PFO) and Freundlich models. The adsorption capacities for NiAl-LDH, NiAl-LDH/Hc (modified with Hc), and NiAl-LDH/POM (modified with POM) materials were 32.789 mg/g, 47.393 mg/g, and 90.091 mg/g, respectively. It can be concluded that the adsorption process occurs via physisorption, forming multilayer adsorbates at the adsorbents active sites. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0)
Intercalation and Structural Reconstruction of Ca/Al Layered Double Hydroxides Abriyanto, Danang; Juleanti, Novie; Normah, Normah; Lesbani, Aldes
Indonesian Journal of Material Research Vol. 2 No. 2 (2024): July
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20242234

Abstract

The intercalation of of Ca/Al layered double hydroxide (LDH) has been successfully conducted into using several intercalants with different size compounds after termal treatment process to reconstruct structure of Ca/Al LDH. Ca/Al LDH was synthesized by co-precipitation at pH 11 then calcination at various temperatures following with intercalation using water, sodium hydroxide, sodium carbonate and Keggin type of polyoxometalate K4[α-SiW12O40]. Characterization of Ca/Al LDH was carried out by XRD and FTIR analyses. XRD analysis showed that unique diffraction peak of Ca/Al LDH at 10o with interlayer space 4.67 Å. Gradual thermal treatment of Ca/Al LDH was achieved until loss unique diffraction peak at temperature 700 oC to form shrinking layer. Intercalation of water, sodium hydroxide, sodium carbonate, and polyoxometalate to shrink layer of Ca/Al LDH can create formation of well crystalline LDH to reconstruct layer structure with formation of unique diffraction at 10◦. The interlayer distance of Ca/Al LDH was increased after intercalation process. Thus reconstruction structure of LDH was successfully conducted with flexibility of layer.
Optimization of Desulfurization of 4-Methyldibenzothiophene and 4,6-Dimethyldibenzothiophene Using Mg/Al Layered Double Hydroxide Equipped with ZnO/TiO2 Amri, Amri; Ahmad, Nur; Wibiyan, Sahrul; Wijaya, Alfan; Mardiyanto, Mardiyanto; Royani, Idha; Mohadi, Risfidian; Lesbani, Aldes
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.88790

Abstract

The growth of heavy industry leads to an increase in sulfur dioxide emissions, impacting health, economy, and the fulfilment of the ecological needs for society. Sulfur removal is carried out using the oxidative desulfurization (ODS) method. In this study, layered double hydroxide materials of Mg/Al, Mg/Al-TiO2, and Mg/Al-ZnO were successfully synthesized and analyzed using X-ray diffraction (XRD), Fourier-transform infrared (FTIR), and scanning electron microscope-energy dispersive spectroscopy (SEM-EDS) techniques. Those materials are used as catalysts for the desulfurization of 4-methyldibenzothiophene (4-MDBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT). Composite Mg/Al catalysts with metal oxides provide superior desulfurization process efficiency and enhanced stability, making them highly effective for repeated use. The conversion percentage of desulfurization of 4-MDBT and 4,6-DMDBT increases with time. The n-hexane is a suitable solvent for desulfurization of 4-MDBT and 4,6-DMDBT. All catalysts exhibit significant heterogeneity that greatly aids in the separation process.
Synthesis and Performance of ZnAl@Layered Double Hydroxide Composites with Eucheuma cottonii for Adsorption and Regeneration of Congo Red Dye Wibiyan, Sahrul; Royani, Idha; Lesbani, Aldes
Indonesian Journal of Environmental Management and Sustainability Vol. 8 No. 3 (2024): September
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2024.8.3.126-134

Abstract

This study investigates the synthesis and characterization of ZnAl-layered double hydroxide (ZnAl@LDH) composites modified with Eucheuma cottonii (EC) for the adsorption and regeneration of congo red (CR) dye. The ZnAl@LDH was synthesized using a co-precipitation method, and the composite with EC was prepared via hydrothermal techniques. The structural properties of the composites were analyzed using XRD and FTIR. Adsorption experiments were conducted to determine the effects of pH, contact time, concentration, and temperature on dye removal. The adsorption kinetics followed the pseudo-second-order (PSO) model, while the isotherm data best fitted the Freundlich model, indicating multilayer adsorption. The ZnAl@EC composite demonstrated superior adsorption capacity (243.902 mg/g at 40 °C) compared to ZnAl@LDH and EC. Thermodynamic studies revealed that the adsorption process was spontaneous and endothermic for ZnAl@LDH and EC but exothermic for ZnAl@EC. The regeneration study showed that ZnAl@EC retained significant adsorption capacity even after seven cycles, indicating its potential for practical applications in wastewater treatment.
Hydrothermal Carbonization of Eucheuma cottonii for Selective Adsorption of Anionic Dyes Putri, Bunga Indah; Arsyad, Fitri Suryani; Lesbani, Aldes
Indonesian Journal of Environmental Management and Sustainability Vol. 8 No. 4 (2024): December
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2024.8.4.154-165

Abstract

The contamination of wastewater with synthetic dyes, particularly anionic dyes, poses a significant environmental challenge due to their persistence and difficulty in removal. Traditional adsorbents are often expensive or inefficient, driving the need for sustainable, eco-friendly alternatives. In response to this problem, this study explores the use of Eucheuma cottonii, a fast-growing and widely available macroalgae, as a raw material for producing hydrochar through hydrothermal carbonization (HTC). The goal is to develop a renewable and effective adsorbent capable of selectively removing anionic dyes from contaminated water. Hydrochar was synthesized at two different HTC temperatures, 150°C and 250°C, and its surface properties were characterized using FT-IR and BET analyses. Adsorption experiments were conducted on four anionic dyes-Congo Red (CR), Direct Yellow (DY), Methyl Orange (MO), and Direct Green (DG)-under varying pH, contact time, dye concentration, and temperature conditions. The hydrochar produced at 250°C (HC-250) demonstrated the highest surface area and pore volume, leading to superior adsorption performance, particularly for DY. Kinetic studies revealed a chemisorption-driven mechanism, while thermodynamic analysis confirmed the adsorption process to be spontaneous and endothermic, with both chemisorption and physisorption contributing to dye removal. The adsorption behavior followed the Langmuir isotherm model, indicating monolayer adsorption, with minimal interaction between adsorbed molecules. Regeneration tests confirmed that Eucheuma cottonii hydrochar could be reused over multiple cycles with minimal efficiency loss. Future work could optimize the HTC process by adjusting pressure, heating rates, and pre-treatment methods to improve adsorption properties. Incorporating nanomaterials or metal oxides could enhance adsorption for a wider range of pollutants, while machine learning could predict adsorption behavior under different conditions. Additionally, exploring the hydrochar’s use in energy storage or as a catalyst offers promising applications. Life-cycle assessments (LCAs) and techno-economic analyses (TEAs) will be vital for assessing scalability and environmental impact, positioning Eucheuma cottonii hydrochar as a sustainable, multifunctional material for industrial applications.
CuAl-LDH Modified with Filamentous Macroalgae for Anionic Dyes Removal: A Study on Selectivity, Adsorption Efficiency, and Regeneration Wijaya, Alfan; Hanum, Laila; Melwita, Elda; Lesbani, Aldes
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 4 Year 2024 (December 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20223

Abstract

Continuous modifications of Layered Double Hydroxides (LDH) materials are essential to enhance their structural stability and improve their capacity for pollutant adsorption, addressing the need for more effective remediation strategies in environmental applications. This research study has proposed the preparation of CuAl-LDH supported filamentous macroalgae of Spirogyra sp. (CuAl-LDH/SA) via coprecipitation and hydrothermal methods. The prepared CuAl-LDH/SA composites were investigated for the adsorption of direct yellow 12 (DY) and remazol red (RR) dyes in batch mode experiments. The structure and morphology of the prepared CuAl-LDH/SA were identified by X-ray Diffraction (XRD), Fourier Transform Infra Red (FT-IR), (Brunauer-Emmett-Teller) BET surface area, Thermogravimetry / Differential Thermal Analyzer (TG/DTA), and Scanning Electron Microscope (SEM). For the adsorption process, the effects of initial pH, contact time, initial concentration, temperature, adsorption selectivity, and adsorbent regeneration, as well as kinetics, isotherms, and thermodynamics were studied. The adsorption selectivity test resulted in the RR dye being more selective compared to DY. The maximum capacities for RR adsorption were 72.464 mg/g (pH = 2, 150 min, 303 K). CuAl-LDH/SA can be regenerated for 4 cycles with a percent removal of 29.32%. The adsorption process followed the intraparticle diffusion kinetics model and Langmuir isotherm. Thermodynamic studies showed that the adsorption of RR using CuAl-LDH/SA was endothermic and spontaneous. The results of this study indicate that CuAl-LDH/SA composite material shows potential material in the removal of anionic dyes from aqueous solutions. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Enhanced Removal Efficiency of Malachite Green Dye Using Gambir Leaf Extract-Modified NiFe LDH Composites: A Study of Cationic Dye Adsorption Jefri, Jefri; Fithri, Najma Annuria; Lesbani, Aldes
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 4 Year 2024 (December 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20215

Abstract

A NiFe layered double hydroxide (LDH) composite with Uncaria gambir (UG) leaf extract was successfully synthesized. The composite (NiFe-UG LDH) and the base material (NiFe LDH) were identified using X-ray Diffraction (XRD), Fourier Transform Infra Red (FTIR), and Brunauer-Emmett-Teller (BET) Surface Area techniques. The XRD and FTIR results revealed the incorporation of gambier leaf extract into the NiFe LDH structure, as indicated by the combined diffraction patterns and spectral features. The BET analysis indicated a decrease in the surface area of NiFe-UG LDH compared to that of NiFe LDH, suggesting that active compounds from the gambier leaf extract effectively coated the LDH surface and blocked its pores. During malachite green (MG) adsorption, NiFe-UG demonstrated faster adsorption kinetics and a higher adsorption efficiency, reaching 96.420% compared to 92.085% for NiFe LDH. While both materials followed pseudo-first-order kinetics, their isotherm behaviors differed: NiFe-UG adhered to the Langmuir model, indicating monolayer adsorption, whereas NiFe LDH followed the Freundlich model, signifying multilayer adsorption. Further analysis suggested that adsorption in NiFe LDH was primarily governed by physisorption, while in NiFe-UG, a combined physisorption-chemisorption mechanism occurred. These results underscore the enhanced adsorption capacity of the composite material, attributed to the introduction of additional functional groups from the gambier leaf extract. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Efficient Desulfurization of 4-Methyldibenzothiophene Using H5PV2Mo10O40/TiO2: A Catalytic Approach Anggraini, Ana; Jefri, Jefri; Komis; Lesbani, Aldes
Indonesian Journal of Material Research Vol. 3 No. 1 (2025): March
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20253152

Abstract

Oxidation desulfurization (ODS) is an effective method to remove sulfur compounds from fuels by converting them into more polar oxidized forms that are easier to extract. In this study, H₅PV₂Mo₁₀O₄₀/TiO₂ catalysts were synthesized and characterized using FT-IR spectroscopy. The FT-IR spectra confirmed the successful impregnation of polyoxometalate into the TiO₂ matrix, indicated by the appearance of Ti-O and O-Ti-O vibrations, while the typical H₅PV₂Mo₁₀O₄₀ peaks remained detectable. The performance of the H₅PV₂Mo₁₀O₄₀/TiO₂ catalyst in the desulfurization of 4-methyldibenzothiophene (4-MDBT) was studied based on variations in reaction time, catalyst mass, temperature, and amount of H₂O₂. The optimal conditions obtained were a reaction time of 2 hours, a catalyst mass of 0.05 g, a temperature of 60°C, and a volume of H₂O₂ of 5 mL, with a maximum sulfur conversion of 99.0%. These results indicate that H₅PV₂Mo₁₀O₄₀/TiO₂ has potential as an efficient ODS catalyst.
Synthesis, Characterization, and Catalytic Performance of H₃[α-PMo₁₂O₄₀]·nH₂O-TiO₂ in Cyclohexane Oxidation Lingga, Fitra Wahyuni; Jefri, Jefri; Mohadi, Risfidian; Lesbani, Aldes
Indonesian Journal of Material Research Vol. 3 No. 1 (2025): March
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20253153

Abstract

This study aims to synthesize and characterize the H₃[α-PMo₁₂O₄₀].nH₂O-TiO₂ composite as a heterogeneous catalyst for cyclohexane oxidation using H₂O₂. FT-IR and XRD characterization showed the interaction between POM and TiO₂, with an increase in TiO₂ ratio leading to a decrease in POM crystallinity. Reaction optimization showed that the POM-1.00TiO₂ catalyst gave the highest conversion of 99.95% at 80°C, 2 hours reaction time, 3 mL H₂O₂ volume, and 0.1 g catalyst mass. GC analysis confirmed the formation of cyclohexanol and cyclohexanone, with the optimized conditions resulting in a balanced selectivity of 35.51% for cyclohexanol and 34.69% for cyclohexanone, demonstrating the catalyst's effectiveness in cyclohexane oxidation.
Pembelajaran Modifikasi Nutrasetikal Temu Mangga Menjadi Produk “Temapro” untuk Kesehatan Masyarakat Miksusanti Miksusanti; Risfidian Mohadi; Aldes Lesbani; Nirwan Syarif; Neza Rahayu Palapa; Azhar Kholiq; Syafrina Lamin
Bumi : Jurnal Hasil Kegiatan Sosialisasi Pengabdian kepada Masyarakat Vol. 3 No. 2 (2025): Bumi : Jurnal Hasil Kegiatan Sosialisasi Pengabdian kepada Masyarakat
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/bumi.v3i2.760

Abstract

This community service program aims to develop nutraceutical-based health products from temu mangga (Curcuma mangga Val.van Zip) and probiotics, called "TEMAPRO". Research and socialization were conducted in Pulau Semambu Village, South Sumatra, targeting village mothers who have limited knowledge about the benefits of herbs and probiotics. Temu mangga, which is traditionally consumed as a salad and herbal medicine, contains various active compounds that have the potential as antioxidants and anti-cancer. Combined with the probiotic Lactobacillus rhamnosus, this product is expected to support digestive health and increase body immunity. Implementation methods include education, training in making temu mangga extract, mixing with probiotics, and product packaging techniques. The results of the activities showed an increase in community understanding and skills in processing local materials into health products with economic value. It is hoped that "TEMAPRO" will not only improve the quality of public health, but also open up business opportunities in the village through local nutraceutical products.
Co-Authors A. Agnes Abi Sueb Abriyanto, Danang Addy Rachmat Adi Saputra Adi Saputra Adi Saputra Adi Saputra Afifah Rahma Dian Ahmad Fatoni Ahmad Fatoni Alfan Wijaya Alfan Wijaya Alfan Wijaya Amiruddin Supu Amri Amri Amri Andi Wijaya Andreas, Roy Andriani Azora Andriani Azora Anggraini, Ana Arini Fousty Badri Arini Fousty Badri Arison Musri Arison Musri Arsyad, Fitri Suryani Aslihati Aslihati Aslihayati Aslihayati Azhar Kholiq Badri, Arini Fousty Bakri Rio Rahayu Bakri Rio Rahayu Benyamin Lakitan Dedi Rohendi Dedi Setiabudidaya Desnelli Desnelli Dian Monariqsa Dian Monariqsa Didi Jasantri Dormian A N Haloho Dormian A N Haloho Eiffel Ostan Jeski Gultom Elfita Elfita . Elfita Elfita Eliza . Eliza Eliza Eliza Eliza Ema Veronika Turnip Endri Junaidi Eriza Sativa Erviana, Desti Fahma Riyanti Fatmawati Fatmawati Ferlinahayati Ferlinahayati Fitri Suryani Arsyad Fitri, Erni Salasia Fitriliana Fitriliana Hanifah, Yulizah Haris Kriswantoro Hermansyah Hermansyah Hermansyah Hermansyah Hesti A. Harahap Hesti A. Harahap, Hesti Hidayatullah, Muhammad Hilda Zulkifli Hilda Zulkifli Hilda Zulkifli Hiroshi Nishihara Hitoshi Kondo Idha Royani Intan Permata Sari Irfannuddin Irfannuddin Jasantri, Didi Jefri Jefri Jeri Ramadhan Juleanti, Novie Kiki Anggraini Kiki Anggraini Kiki Anggraini, Kiki Komis Krisna Murti Laila Hanum Leni Sinaga Lestari Simanjuntak Lestari Simanjuntak Liasari, Beta Riana Lingga, Fitra Wahyuni Lora Vitanesa Lucyanti . Lucyanti Lucyanti Lusi Teresia Mardianto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto, Marieska Verawaty Mariska Verawaty Melantina Melan Oktriyanti Melwita, Elda Menik Setyowati Mikha Meilinda Christina Miksusanti Miksusanti Muhammad Imron MUHAMMAD SAID Muhammad Said Muhammad Said Muhammad Said Najma Annuria Fithri Najma Annuria Fithri Najma Annuria Fithri Najma Annuria Fithri, Najma Annuria Narsito Narsito Neza Rahayu Niken Oktora Niken Oktora Nirwan Syarif Normah Normah Normah Normah, Normah Nova Yuliasari Novie Juleanti Novie Juleanti Novie Juleanti Nur Ahmad Nur Ahmad, Nur Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nur’aini, Siti Nyanyu Ummu Hani Palita Tamba Patimah Mega Syah Bahar Nur Siregar Patimah Mega Syah Bahar Nur Siregar Patimah Mega Syah Bahar Nur Siregar Poedji Loekitowati Hariani Putri Erlyn Putri, Bunga Indah R.A. Mika Melviana Rabelia Juladika Sayeri Radja Nardo Purba Rakhmawati Farma Ramadhan, Jeri Rananda Vinsiah Randi O. Saragih Ratna, L.P Ratna, L.P Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risma Kurniawati M Rohmatullaili Rohmatullaili, Rohmatullaili Roy Andreas Sabat Okta Ceria Sitompul, Sabat Okta Ceria Samat Samat Savira, Dila Setiawan Yusuf Setiawati Yusuf Setiawati Yusuf Sherly Agustina, Sherly Siregar, Patimah Mega Syah Bahar Nur Sitanggang, Jonra P. Soerya, Balada Sri Juari Santosa Suheryanto Suheyanto Suheryanto Sumiati Sumiati SUMIATI, Susila Arita Syaflina Lamin Syafrina Lamin, Syafrina Tamizi Taher Tarmizi Taher Welinda Me Wibiyan, Sahrul Wijaya, Alfan Winda Fitriana Yeni Iswanti Yoshinori Yamanoi Yosi Saria Yosi Saria Yosi Saria Yosine Susi Yosine Susie Yunita Irianty Zahara, Zaqiya Artha Zazili Hanafiah Zultriana