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All Journal Reaktor JURNAL KIMIA SAINS DAN APLIKASI Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Bahan Alam Terbarukan Jurnal Riset Kimia Jurnal IPTEK Indonesian Journal of Chemistry Indonesian Journal of Chemical Analysis (IJCA) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences International Journal of Engineering, Science and Information Technology Relativitas : Jurnal Riset Inovasi Pembelajaran Fisika Mechanical Engineering for Society and Industry Journal of Renewable Energy, Electrical, and Computer Engineering Chemical Engineering Journal Storage (CEJS) Jurnal Teknologi Kimia Unimal The International Conference on Education, Social Sciences and Technology (ICESST) Journal Of Carbazon Jurnal Malikussaleh Mengabdi JURNAL PERSEGI BULAT Jurnal Polimesin Jurnal Solusi Masyarakat Dikara Advance Sustainable Science, Engineering and Technology (ASSET) Jurnal Bahan Alam Terbarukan
Rozanna Dewi
Universitas Malikussaleh
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PEMBUATAN SABUN PADAT DENGAN PENAMBAHAN ESSENTIAL OIL LAVENDER DAN SCRUB OAT SEBAGAI ANTI INFLAMASI DENGAN METODE COLD PROCES Ramdhani, Nevia Arbi; Sylvia, Novi; ., Faisal; Hakim, Lukman; Dewi, Rozanna
Chemical Engineering Journal Storage (CEJS) Vol. 4 No. 3 (2024): Chemical Engineering Journal Storage (CEJS) - Juni 2024
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v4i3.15194

Abstract

Sabun adalah senyawa natrium yang terbentuk dari asam lemak dan digunakan sebagai agen pembersih tubuh. Sabun biasanya berwujud padat, mampu menghasilkan busa, dan dapat mengandung bahan tambahan tertentu. Pentingnya, sabun dirancang sedemikian rupa sehingga tidak menyebabkan iritasi pada kulit. Proses pembuatan sabun melibatkan pengikatan asam lemak dengan alkali, seperti natrium hidroksida (NaOH), yang menghasilkan sabun padat, atau yang lebih dikenal sebagai hardsoap. Sabun padat diproduksi melalui metode cold process, tanpa pemanasan, dengan mencampurkan bahan utama berupa minyak kelapa, minyak kelapa sawit, dan minyak zaitun dengan alkali. Kemudian, ditambahkan essential oil lavender dan scrub oat ke dalam campuran tersebut. Proses selanjutnya melibatkan penggunaan hand mixer sebelum dicetak, dengan masa curing selama 2 minggu. Penelitian ini sudah pernah dilakukan sebelumnya yang belum pernah dilakukan adalah memvariasikan bahan dengan penambahan essential oil lavender dan scrub oat sebagai anti inflamasi. Analisa mutu sabun dilakukan berdasarkan SNI No.3532-2021 serta uji fisik sediaan sabun dengan parameter pengujian meliputi kadar air, alkali bebas/ asam lemak bebas, pH, stabilitas busa, dan organoleptik. Hasil penelitian menunjukkan bahwa kadar air sabun yaitu berkisar 3,4% -7%, asam lemak bebas berkisar 0,38%- 0,78% dan uji fisik yaitu pH berada dikisaran 9,49-10, uji stabilitas busa berada dikisaran 70,66%-79,62% dan uji organoleptik menghasilkan sediaan warna, aroma dan tekstur yang bervariasi. Dapat dilihat dari hasil penelitian ini bahwa sabun padat dengan penambahan essential oil lavender dan scrub oat dengan metode cold proces telah memenuhi standar SNI dan uji fisik yang aman dipakai Kata Kunci:Asam Lemak Bebas, Alkali, Kadar Air, Essential Oil, Ph, Sabun, Scrub Oat, Stabilitas Busa, Organoleptik
PENINGKATAN DERAJAT DEASETILASI PADA KITOSAN DARI LIMBAH TULANG SOTONG (SEPIA OFFICINALIS) DENGAN MENGGUNAKAN METODE EKSTRAKSI Reci Anggraini; Zulnazri; Rozanna Dewi
Chemical Engineering Journal Storage (CEJS) Vol. 5 No. 06 (2025): Chemical Engineering Journal Storage (CEJS)-December 2025
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v5i06.22857

Abstract

Kitosan merupakan biopolimer alami yang banyak dimanfaatkan di berbagai bidang, termasuk industri farmasi, karena sifat-sifatnya yang biokompatibel, biodegradable, dan memiliki aktivitas biologi. Hasil penelitian menunjukkan bahwa kondisi optimum dicapai pada suhu 130°C dan waktu reaksi 80 menit. Pada parameter ini, kitosan yang dihasilkan memiliki derajat deasetilasi sebesar 75%, rendemen sebesar 80%, kadar udara 0,85%, dan kadar abu 0,95%.Nilai-nilai tersebut menunjukkan bahwa kitosan yang diperoleh telah memenuhi standar kualitas untuk aplikasi teknis dan memiliki potensi untuk dikembangkan lebih lanjut dalam berbagai penggunaan industri.
PEMBUATAN PLASTIK DEGRADABLE BERBAHAN DASAR PATI BENGKOANG DENGAN PENAMBAHAN CaCO3 SEBAGAI BAHAN PENGUAT Bima Bahyuzi; Rozanna Dewi; Novi Sylvia; Wiza Ulfa Fibarzi; Iqbal Kamar; Andre Yosi
Chemical Engineering Journal Storage (CEJS) Vol. 6 No. 03 (2026): Chemical Engineering Journal Storage (CEJS)-Juni 2026
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v6i03.19899

Abstract

Bioplastik merupakan alternatif ramah lingkungan untuk menggantikan plastik konvensional yang sulit terurai. Penelitian ini bertujuan mengevaluasi biodegradasi dan penyerapan air pada bioplastik berbasis kalsium karbonat dan sorbitol. Sampel bioplastik dibuat dengan variasi konsentrasi sorbitol-kalsium karbonat (2,5 ml-0,2 g, 3 ml-0,4 g, dan 3,5 ml-0,6 g) dan diuji biodegradasinya dengan menanamnya dalam tanah. Hasil menunjukkan bahwa sampel dengan konsentrasi 3 ml-0,4 g mengalami penurunan berat badan tercepat, menunjukkan laju degradasi yang lebih tinggi. Uji penyerapan air juga mengindikasikan bahwa bioplastik dengan konsentrasi bahan yang lebih rendah lebih cepat terurai, namun memiliki sifat yang lebih rapuh dan elastisitas rendah. Sebaliknya, peningkatan konsentrasi kalsium karbonat dan sorbitol membuat bioplastik lebih keras dan tahan lama terhadap degradasi. Penelitian ini memberikan pemahaman mengenai pengaruh komposisi bahan pengikat terhadap sifat mekanik dan biodegradabilitas bioplastik, nilai biodegradasi dan swelling dari bioplastik yang didapatkan telah memenuhi standar nasional Indonesia.
PENGARUH PENAMBAHAN ENZIM ZINGIBAIN DARI RIMPANG JAHE TERHADAP KUALITAS VCO (VIRGIN COCONUT OIL) Rosnita; Agam Muarif; Rizka Nurlaila; Rozanna Dewi; muhammad; Safira Fitri
Chemical Engineering Journal Storage (CEJS) Vol. 6 No. 03 (2026): Chemical Engineering Journal Storage (CEJS)-Juni 2026
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v6i03.23632

Abstract

VCO (Virgin Coconut Oil) adalah hasil olahan minyak kelapa yang diproses dari ekstraksi daging buah kelapa segar tanpa melibatkan reaksi kimia atau pemanasan ekstrem. Tujuan dari penelitian ini adalah untuk mengkaji efek dari penambahan Enzim Zingibain yang berasal dari Rimpang jahe terhadap kualitas VCO, dengan fokus pada analisis parameter mutu seperti kadar asam lemak, asam lemak bebas (ALB) dan kadar air. Proses fermentasi dilaksankan dengan variasi jumlah enzim yang digunakan (0, 8 ml, 12 ml, dan 16 ml) dan waktu fermentasi (24, 36, 48 dan 60 jam). Berdasarkan hasil penelitian, dikethaui bahwa pada VCO tanpa enzim dan fermentasi selama 24 jam, asam lemak utama yang teridentifikasi adalah Decanoic acid methyl ester, Lauric acid, Myristic acid, dan Hexadecanoic acid. Sementara itu, VCO dengan enzim 8 ml dan fermentasi 48 jam mengandung senyawa tambahan seperti Octanoic acid ethyl ester, Zingiberene, Dodecanoic acid methyl ester, dan beberapa ester asam lemak lainnya. Untuk analisa bilangan asam lemak bebas menunjukan nilai rata-rata 0,1% hingga 0,2%, baik pada VCO tanpa enzim maupun dengan penambahan enzim zingibain. Pada hasil analisa kadar air pada VCO yang diolah secara enzimatis menunjukan hasil yang sangat rendah dengan kadar air sebesar 0,002% dan kadar air tertinggi sebesar 0,01%. Berdasarkan hasil penelitian disimpulkan bahwa seluruh sampel VCO memenuhi standar minyak kelapa sesuai SNI 7382-2008 asam lemak bebas tidak melewati 0,2% dan kadar air tidak lebih dari 0,2%.
KARAKTERISASI α-SELULOSA DARI LIMBAH KULIT KOPI ARABICA Hannisyah Firda; Zulnazri; Agam Muarif; Rozanna Dewi; Syamsul Bahri
Chemical Engineering Journal Storage (CEJS) Vol. 6 No. 03 (2026): Chemical Engineering Journal Storage (CEJS)-Juni 2026
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v6i03.23789

Abstract

Penelitian ini bertujuan untuk mengekstraksi dan mengkarakterisasi α-selulosa dari limbah kulit kopi Arabica sebagai upaya pemanfaatan limbah biomassa lignoselulosa yang melimpah namun belum optimal digunakan. Ekstraksi α-selulosa dilakukan melalui tahapan pretreatment asam menggunakan HNO₃ 3,5% dan NaNO₂, dilanjutkan proses delignifikasi dengan NaOH (2% dan 3%) serta pemutihan bertahap menggunakan NaOCl dan H₂O₂. Variabel bebas dalam penelitian ini adalah konsentrasi NaOH (2% dan 3%) serta waktu ekstraksi (1,5 jam, 2 jam, dan 2,5 jam). Proses karakterisasi dilakukan menggunakan metode Chesson-Datta, FTIR, XRD, dan SEM. Hasil terbaik diperoleh pada perlakuan NaOH 2% selama 2 jam dengan nilai yield 31,93% dan indeks kristalinitas tertinggi sebesar 87% berdasarkan analisa XRD. Spektrum FTIR menunjukkan keberhasilan penghilangan lignin dan hemiselulosa, sementara analisis SEM memperlihatkan morfologi permukaan selulosa yang lebih halus dan homogen. Penelitian ini menunjukkan bahwa kulit kopi Arabica berpotensi sebagai sumber α-selulosa berkualitas tinggi yang ramah lingkungan dan bernilai ekonomis. Kata Kunci: α-Selulosa, Kulit Kopi Arabica, NaOH, Delignifikasi, Karakterisasi, FTIR, XRD, SEM.
Activation of Coconut Shell through Alkalization Process as a Biochar for Soil Amendment Gebrina Rizki; Zulnazri Zulnazri; Rozanna Dewi; Rizka Nurlaila; Iqbal Kamar; S. Syafi’ie
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 6 No. 1 (2026): March 2026
Publisher : Institute for Research and Community Service (LPPM), Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v6i1.23533

Abstract

Based on data from the Central Statistics Agency, most land in Indonesia has experienced degradation. Total area of critical land in Indonesia reaches 9,681,356 hectares, much of which is utilized for plantation activities. One of the regions significantly affected by this condition is Aceh Province, where extensive plantation areas are dominated by ultisol soils. The soil in this area is characterized by acidic conditions, low organic carbon content (approximately 0.5–2%), and moderate to very low total nitrogen levels (<0.50%), indicating inherently low soil fertility. These conditions ultimately result in reduced crop productivity, highlighting the urgent need for sustainable soil amendment strategies that can simultaneously improve soil chemical properties, enhance soil structure, and restore long-term soil fertility.  To address this issue, the utilization of biochar derived from biomass waste, such as coconut shells, is considered a promising solution. Biochar has been widely reported as an effective soil amendment capable of mitigating soil degradation, improving soil fertility, and supporting sustainable agricultural systems. However, the effectiveness of biochar is strongly influenced by its physicochemical properties, which are determined by both carbonization conditions and activation methods. In this study, the use of NaOH as an alkaline activator is expected to not only increase biochar surface area and reactive sites but also contribute to soil pH adjustment, which is particularly beneficial for acidic ultisol soils. This study aims to directly evaluate the effect of NaOH-activated biochar on plant growth and analyze the characteristics of the resulting biochar based on SNI 7763:2024. The biochar was produced through a carbonization process with varying residence times of 30, 45, 60, and 75 minutes at a temperature of 300 °C, followed by chemical activation using NaOH solutions with concentrations of 1, 1.5, 2, and 2.5 N for 3 hours to obtain optimal biochar characteristics. The results demonstrated that NaOH-activated biochar had a highly significant effect on plant height. The application of activated biochar improved soil structure by enhancing texture and porosity, reduced soil acidity, and promoted root development, which collectively increased nutrient availability and uptake by plants. The best moisture content and pH were achieved at 75 minutes of carbonization with 2.5 N NaOH, reaching 8.88% and 9.5, respectively. The highest C-Organic content was obtained at 30 minutes of carbonization and 2.5 N NaOH concentration, which was 55.80%. The relatively high C/N ratio indicates that the biochar is highly potential as a soil amendment to enhance soil fertility and crop productivity. Overall, NaOH-activated biochar had a highly significant effect on plant height by improving soil structure and creating more favorable conditions for plant growth.
Mechanical Performance of Alkali-Treated Rattan Strips with Epoxy Coating for Sustainable Composite Applications Sujentheran Nair Kalatharan; Al Ichlas Imran; Agustinus Purna Irawan; Januar Parlaungan Siregar; Tezara Cionita; Deni Fajar Fitriyana; Samsudin Anis; Rozanna Dewi; Yuris Setyoadi; Wisnu Prayogo
Advance Sustainable Science Engineering and Technology Vol. 7 No. 3 (2025): May - July
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i3.2017

Abstract

The use of natural materials like rattan in eco-friendly composites is gaining attention in materials engineering. However, its hydrophilic nature and interaction with other materials can affect mechanical strength. This study investigates how variations in rattan size and alkali treatment influence the tensile properties of single rattan strips through an epoxy dipping process. Rattan was prepared with varying lengths (5–15 cm), widths (3–8 mm), and a consistent thickness (0.5 mm). Alkali treatment used 5% and 10% NaOH concentrations for 1 and 24 hours. Tensile testing showed that a 5 cm × 8 mm strip achieved the highest tensile strength (49.95 MPa), Young's modulus (3562.77 MPa), and low strain (5.4%), while the 15 cm × 3 mm strip had the lowest strength (9.48 MPa) and modulus (475.69 MPa) with higher strain (10.32%). A 5% NaOH treatment for 24 hours improved adhesion and performance, while 10% caused degradation.
Mechanical Performance of Epoxy Composite Reinforced with Wood Dust and Crumb Rubber Waste Al Ichlas Imran; Januar Parlaungan Siregar; Tezara Cionita; Deni Fajar Fitriyana; Samsudin Anis; Rozanna Dewi; Thomas Junaedi; Etanto Heiliano Wijayanto; Wisnu Prayogo
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.2041

Abstract

The incorporation of wood dust and crumb rubber waste as filler in polymer matrix composite still requires in-depth evaluation of mechanical properties because they have different characteristics. This study evaluates the tensile, flexural, and hardness properties of epoxy composites reinforced with various fractions of wood dust and crumb rubber (5, 10, and 15%). The results showed that the composite with 5% crumb rubber produced the highest tensile strength of 15.52 MPa (CR5), while the highest flexural strength was 30.46 MPa (CR10), and the highest hardness was 75.9 HRC (CR15), indicating superior performance for CR fillers. The observations of the fracture surface showed that increasing the fraction of wood dust contributed to lowering the mechanical performance due to the relatively large distribution of voids and agglomeration. This finding confirms the importance of filler type and fraction selection on composite performance. Future research is recommended to explore filler surface modification and hybrid combinations to improve dispersion and bonding between phases in composites.
Mechanical Properties of Epoxy Composite Reinforced with Spent Coffee Ground and Coffee Husk Etanto Heiliano Wijayanto; Al Ichlas Imran; Januar Parlaungan Siregar; Mohd Ruzaimi Mat Rejab; Tezara Cionita; Wisnu Prayogo; Deni Fajar Fitriyana; Rozanna Dewi; Thomas Junaedi; Agustinus Purna Irawan
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.2052

Abstract

This study aims to investigate the effect of increasing the concentration of natural filler on the mechanical properties of Spent Coffee Ground (SCG) / Coffee Husk (CH) reinforced epoxy matrix composite. The materials used in this study are epoxy resin as a matrix and waste coffee grounds and coffee husks as natural fillers with sizes of 100-mesh and concentrations of 10, 20, and 30 wt.%. The results showed that SCG 10 wt.% produced the best mechanical properties compared to the other samples based on tensile strength (19.58 MPa), tensile modulus (1.70 GPa), flexural strength (44.55 MPa), and flexural modulus (2.32 GPa). On the other hand, CH 30 wt.% contributed the highest hardness value of 50.33 HRB compared to other samples. The findings in this study prove that the appropriate composition will affect the compatibility between the filler and the matrix, thus impacting the mechanical properties of the composite. This phenomenon can be seen based on microscope analysis, which shows a strong interaction between the matrix and filler and the formation of voids and agglomeration
Making Biochar from Coffee Grounds and Powder Waste Through the Torrefaction Process and Adding NaHCO3 Muhammad Faturrahman; Zulnazri Zulnazri; Rozanna Dewi
Jurnal IPTEK Vol 29, No 1 (2025): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i1.6666

Abstract

This research examines biochar manufacture from waste coffee grounds and wood dust using the dry torrefaction method with a temperature ratio of  250°C  and 300°C. The adhesive used at 5% shows a calorific value of 6,786 cal, volatile matter 81.82%adb, water content 1.79%ar, and ash content 9.52%adb. Meanwhile, the adhesive at 7% obtained a calorific value of 6,264 cal, water content of 3.9%ar, volatile matter 81.82%ab, and ash content of 14.29%adb. The results of the functional group analysis with FT-IR of the two torrefaction biobriquettes showed the presence of CH and OH groups originating from cellulose compounds, indicating that the carbon quality in the torrefaction charcoal is still high. Activated charcoal products produced through torrefaction are briquettes using tapioca flour adhesive to be molded as bio briquettes, and the results are tough and not easily broken.
Co-Authors Abrar Muslim Adha, Muhammad Ikhwanul Adi Saputra Ismy Adi Setiawan Adrin, Prista Agam Muarif Agustinus Purna Irawan Ahmad Fikri Ahmad Fikri Ahmad Fikri Ahmadi Ahmadi Aida Safitri Ainun, Sarifah Al Ichlas Imran Al Ichlas Imran Almia Permata Putri Amalia, Nabuia Amiratul Husna Amri Amri Ananda Monarita Ananda, Aldila Andre Yosi Angga Tri Agusna PA Anggi Dwi Safitri Anggraini, Dea Riski Annisa Ramadina Anugrah Yunika Tambunan Ardiansyah, Zul Fadly Ari Irawan Ari Salahudin Arif Maulana Aulia, Rauzatul Authar, Mhammad Azhari Azhari Azhari Azhari Bima Bahyuzi Chairina Chairina Chatarina Umbul Wahyuni Cionita, Tezara Cut Milya Dahliana Abdullah Deasy Siska Desriani, Chintiara Devi, Sri Marlia Dewi Lestari Dinda Humaira Eddy Kurniawan Effendy, Ahmad Hidayat Eni Suryani Etanto Heiliano Wijayanto Etanto Heiliano Wijayanto Fachry Abda El Rahman Fadhli Syamsudin Fahirul Muhar Faisal . Faisal Faisal Faisal Faisal Farah Irda Farid Yoanda Fatnia, Fatnia Feni Lestari Berutu Fibarzi, Wiza Ulfa Firda, Hanisyah Fitriani Fitriani Fitriyana, Deni Fajar Gebrina Rizki Gunawati Gunawati Hadi, Agung Efriyo Halimatus Sakdiah Hanif, Hanif Hannisyah Firda Harahap, Nurul Aulia Hendi Setiawan Holila, Manna Husni Husin Ibrahim, Ishak Ilhami, Gita Ayu Imran, Al Ichlas Indra Nofriadi Iqbal Kamar Iqbal Kamar Iqbal Kamar Ishak Ishak Ishak Ishak Jalaluddin Jalaluddin Jalaluddin Jalaluddin Jamiluddin, Jamiluddin Jannah, Rouzatul Janni, Miftahul Januar Parlaungan Siregar Januar Parlaungan Siregar Jasmani Jasmani Jullimursyida Kamar, Iqbal Khalsiah Khalsiah Kuniawan, Eddy Leni Maulinda, Leni Lidia Manik Lukman Hakim Lukman Hakim M Ali Anto M Riza Mahdayani Sinaga, Citra Puspita Maizuar Maizuar Masrullita Masrullita Masrullita Masrullita Masrullita, Masrullita Mat Rejab, Mohd Ruzaimi Mat Rejab, Mohd. Ruzaimi Mawardati Mawardati Medyan Riza Medyan Riza Melan Amanah, Ananda Meriatna Meriatna Mhd Aidil Anwar Milarahma Yulianti Mohd Ruzaimi Mat Rejab Muammar Khadafi Muhammad Muhammad Abrar Muhammad Daud Muhammad Farhan Muhammad Faturrahman Muhammad Ikhwanul Adha Muhammad Muhammad Muhammad Muhammad Muhammad Muhammad Muhammad nur Ichsan Tamiogy Muhammad Subhan Muji Setiyo Muliadi Mulyawan, Rizka Muthawali, Dede Ibrahim Muthia Septiana Muthia Septiana, Muthia Mutia Reza Nabila Adhani Nainggolan, Yuni O Nasrul ZA Nasrul ZA, Nasrul Nasrun, Mahdalena Novi Sylvia Nur Annisa Nur rizqi Fattah Lubis Nurdiah, Ika Nurlaila, Rizka Nurmazaya, Vini Nurul Khumaida Oktaviani oktaviani Pane, Nurul Anisa putri, intan nanda Putri, Melani Annisa Rafika Rafika Rahayu Retnowulan, Sri Rahmi Rahmi Rahmi, Delfi Ramadhan, Cindia Ramdhani, Nevia Arbi Ratna Sari Raudhatul Ulfa Reci Anggraini Retnowulan, Sri Rahayu Ridwandi Rizka Mulyawan Rizka Mulyawan Rizka Mulyawan Rizka Mulyawan Rizka Nurlaila Rizkya Faradaiza Rizqon Hasibuan Rosnita Rouzatul Jannah S. Syafi’ie Safira Fitri Said Jalalul Akbar Samsudin Anis Shintia Clarita Silitonga, Hanna Amaliah Siregar, Januar Parlaungan Siti Maulidya Salsabila Sry Rahmadani Sujentheran Nair Kalatharan Sulhatun Sulhatun Suryati Suryati Syamsul Bahri Syamsul Bahri Syamsul Bahri Syarifah Yulisa Syurvani Else Putri Tarigan, Jhodi Okta Albiqho Tasya Maidayanti Teuku Rihayat Tezara Cionita Thomas Junaedi Vania, Sherryl Veithzal Rivai Zainal Wisnu Prayogo Wiyani, Sri Wiza Ulfa Fibarzi Yani, Firda Tirta yanti, eva Yopi Aji Akbar Yulia Yulia Yunardi, Y Yuris Setyoadi Zahratun Mauliza Zainuddin Ginting Zikri Amarullah Surbakti Zulnazri, Z Zurrahmi, Zurrahmi