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PEMBUATAN BIODIESEL DARI MINYAK JELANTAH MELALUI REAKSI TRANSESTERIFIKASI MENGGUNAKAN KATALIS HETEROGEN DARI LIMBAH CANGKANG KERANG DARA (ANADARA GRANOSA) DAN ZEOLIT Putroe Zohara Safura; Azhari Azhari; Wiza Ulfa Fibarzi; Suryati Suryati; Sulhatun Sulhatun
Chemical Engineering Journal Storage (CEJS) Vol. 6 No. 4 (2026): Chemical Engineering Journal Storage (CEJS)- August 2026
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v6i4.18893

Abstract

Biodiesel merupakan bahan bakar alternatif mesin diesel yang berbahan dasar minyak nabati atau lemak hewani. Minyak jelantah merupakan bahan baku minyak nabati yang sudah tidak dapat dikonsumsi lagi sehingga biaya produksinya murah dan ketesediaannya melimpah. Saat memproduksi biodiesel, katalis membantu mengurangi energi aktivasi sehingga memungkinkan reaksi terjadi lebih cepat. Tujuan dari penelitian ini adalah untuk mengevaluasi sifat fisik dan kimia biodiesel yang dihasilkan dari campuran minyak jelantah menggunakan bahan katalis cangkang kerang dara (Anadara Granosa) dan zeolite. Penelitian ini sudah pernah dilakukan sebelumnya, yang membedakan dengan yang sebelumnya adalah pencampuran cangkang kerang dara (anadara granosa) dengan zeolit sebagai katalis dalam penelitian biodiesel. Cangkang kerang dara dikalsinasikan selama tiga jam pada suhu 850°C, proses transesterifikasi dilakukan selama 90 menit. perbandingan molar minyak terhadap metanol 1:10 dengan menggunakan perubahan suhu 50°C, 55°C, 60°C dan 70°C serta berat katalis sebesar 3%, 4%, 5%, dan 6% massa minyak. Hasil pengujian biodiesel terbaik dicapai pada suhu 70°C dan berat katalis 4% dengan yield sebesar 78,72%.
PEMBUATAN BIOKOMPOSIT KITOSAN-PATI UBI JALAR PUTIH (IPOMOEA BATATAS L.)-ALOE VERA UNTUK APLIKASI PEMBALUT LUKA PRIMER Siddik Darmawan; Suryati Suryati; Masrullita Masrullita; Muhammad Muhammad; Lukman Hakim
Chemical Engineering Journal Storage (CEJS) Vol. 6 No. 02 (2026): Chemical Engineering Journal Storage (CEJS)-April 2026
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v6i02.22754

Abstract

Wound dressing adalah lapisan pelindung luka untuk menjaga kelembapan dan mendukung proses penyembuhan dan pertumbuhan jaringan secara alami. Produk ini harus memiliki sifat biokompatibel, rendah toksisitas, antibakteri, serta stabilitas kimia yang baik agar dapat mempercepat proses penyembuhan. Penelitian ini bertujuan mengembangkan biokomposit wound dressing berbahan dasar kitosan dan pati ubi jalar dengan penambahan crosslinker berupa aloe vera. Metode penelitian meliputi tiga tahap, yaitu persiapan bahan baku, pembuatan biokomposit, dan pengujian sifat-sifatnya. Pada analisa swelling hasil dari biokomposit dengan bahan aditif aloe vera pada konsentrasi 10% sebesar 600,00 %. Pada analisa adsorbsi hasil dari biokomposit dengan bahan aditif asam sitrat pada konsentrasi 10%  sebesar 950,00 %. Pada analisa kuat tarik dan elongasi menunjukkan hasil terbaik pada biokomposit dengan aloe vera 2% sebesar 4,37 Mpa dan 75,58 % pada kosentrasi 10%. Pada analisa Analisis FTIR mengidentifikasi gugus O-H, C=C, dan C-O, yang mengindikasikan sifat hidrofilik, antiinflmasi, antibakteri, ramah lingkungan, serta terjadinya ikat silang. Pada analisa antibakteri, biokomposit dengan asam sitrat 2% mengurangi jumlah bakteri menjadi 0 count.
Compositional Engineering of Chitosan–Potato Starch–Kaolin Biocomposites: Tuning Physicochemical Properties for Wound Dressing Applications Suryati Suryati; Rizka Mulyawan; Meriatna Meriatna; Cut Khairunnisa; Leni Maulinda; Fikri Hasfita
International Journal of Engineering, Science and Information Technology Vol 5, No 3 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i3.1001

Abstract

An investigation has been made to predict the effects of various Kaolin fillers with different concentrations from 4 to 10 percent on the properties of Chitosan and Potato Starch Bio-composite for wound dressing applications. The procedure was to prepare the chitosan and starch in equal proportions, apply the filler to the hydrogel, dry it, and characterize it. The characterizations of the synthesized bio-composite were its absorption percentage, mechanical test, presented functional groups, and antibacterial test. It was found out that the bio-composite with the highest swelling percentage 6% Kaolin, showed 128.65% swelling. Moreover, the highest percentage of bio-composite absorption was 65.62% with 8% Kaolin added. In addition to that, adding 4% Kaolin produced the highest tensile strength with the value of 75.6 MPa. Besides, the most significant elongation percentage was 151.60% in the addition of 4% Kaolin. Qualitatively, the synthesized bio-composites exhibited functional groups of OH, alkynes, and carboxylic acid. Finally, the bio-composite with Kaolin filler significantly performed in antibacterial activities.
Optimization Study Of Time And Mass Of Ketapang Fruit Shell Biosorbent in the Methylene Blue Batch Adsorption Process Meriatna Meriatna; Zulmiardi Zulmiardi; Rizka Nurlaila; Suryati Suryati; Fikri Hasfita; Faisal Faisal
International Journal of Engineering, Science and Information Technology Vol 5, No 3 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i3.1000

Abstract

Ketapang fruit shell (Terminalia catappa) has shown potential as a low-cost, eco-friendly biosorbent for removing synthetic dyes from aqueous solutions. This study aimed to determine the optimum conditions for contact time and adsorbent mass of ketapang fruit shell in the adsorption of methylene blue dye. The research involved several stages: preparation and chemical activation of the fruit shells, batch adsorption experiments, analysis of adsorption capacity and efficiency, and optimization using the Response Surface Methodology (RSM). Characterization of the adsorbent was conducted using UV-Visible spectroscopy, Fourier Transform Infrared (FTIR) spectrosco-py, and Scanning Electron Microscopy (SEM) to analyze functional groups and surface morphology. The RSM approach was employed to evaluate the interaction effects of contact time and adsorbent mass, as well as to predict the optimal conditions for maximum dye re-moval. The optimum adsorption conditions were achieved at a contact time of 39.15 minutes and adsorbent mass of 0.416 g, resulting in an adsorption capacity of 1.935 mg/g and 100% removal efficiency. The regression model obtained from RSM was: Y= 35.13437  + 334.35597A – 1.67299B + 0.088354AB – 402.98656A² + 0.018207B², with  a coefficient of determination R² = 0.7857 (78.57%), indi-cating a good model fit. Furthermore, the adsorption behavior followed the Freundlich isotherm model, supported by an R² value of 0.787 (78.7%), suggesting multilayer adsorption on a heterogeneous surface. These findings confirm the effectiveness of ketapang fruit shell as a promising adsorbent for methylene blue removal in wastewater treatment applications.
Application of Pisang Awak Bunch-Derived Heterogenous Base Catalyst in Transesterification of Palm Oil into Biodiesel Meriatna Meriatna; Zulmiardi Zulmiardi; Suryati Suryati; Sulhatun Sulhatun; Zukhrufi Dina Nasution; Rahmadhani Rahmadhani
International Journal of Engineering, Science and Information Technology Vol 2, No 1 (2022)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.396 KB) | DOI: 10.52088/ijesty.v2i1.204

Abstract

Biodiesel is an alternative fuel for diesel machine comprosied of alkyl monoesters deriving from vegetable oils or animal fats. Cooking oil is an oil originated from vegetable or animal fat which has been priorly purified, where it appears in liquid form at room temperature and is usually used to fry food ingredients. Heterogenous catalyst is a catalyst present in different phase with the reagent in a reaction it catalyzes. Kalium content in banana in a banana bunch is sufficiently high reaching 94.4%. The aim of this study was to utilize banana bunch which has been priorly ashed using furnace at 700°C for 4 hours, thereafter, applied as a heterogenous catalyst in a the preparation process of biodiesel from cooking oil. Processing variables investigated in this research included the influences of the number of catalyst (3, 4, 5, 6, and 7%) and molar rasio of oil and methanol (1:5, 1:6, 1:7, 1:8, and 1:9) against the properties of produced biodiesel, namely density, viscosity, and water content which later compred with Indonesian standard (SNI). From the study, it was obtained maximum yield of 90.97% with methanol:oil rasio of 1:7 at processing temperature of 60°C with reaction time of 90 minutes and catalyst as much as 3 % w/w. The characteristics of the cooking oil-based biodiesel obtained from the a reaction with oil: methanol rasio of 1:6 and catalyst as much as 3% w/w were density 850 kg/m3 and viscosity 621 mm2/s. This research showed that the obtained biodiesel characteristics had been sufficient according to the SNI, and the use of calcinated banana bunch was very potential in the production of biodiesel acting as solid catalyst person.
Characterization of Activated Carbon from Granulated Sugar Muhammad Muhammad; Mulyawan Mulyawan; M R F Rahman; Suryati Suryati
International Journal of Engineering, Science and Information Technology Vol 2, No 2 (2022)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (330.844 KB) | DOI: 10.52088/ijesty.v2i2.246

Abstract

Activated carbon that potentially acts as an adsorbent was prepared from granulated sugar. The activated sugar was prepared through a dehydration process followed by a chemical activation process with a concentrated NaOH solution. To comprehend the properties of prepared ready carbon, characterization of the carbon was needed to be conducted. The conducted methods for prepared activated carbon were FTIR for detecting present functional groups attached to carbon, BET to identify the porous structure of synthesized carbon, SEM method as a morphological indicating method on synthesized carbon, and carbon thermal stability characteristic information from the TGA method. It was found that the prepared activated carbon contained various functional groups. The distinguished functional groups presented were carboxylic acid, free alcohol, NH2, and SO3. The readily activated carbon showed a rough surface to enhance the adsorption process on the synthesized carbon from the SEM characterization method. BET on the readily activated carbon revealed that the activated carbon exhibited type IV isotherm, consisting dominantly of mesopores and micropores as a minority. TGA characterization method showed that the thermal stability of carbon was significantly unstable in the range of 100℃ and around 200℃. It implies that the prepared activated carbon contained OH as one of its functional groups. With all the characterization methods conducted on the readily activated carbon from granulated sugar, it was found that the prepared carbon had the potential to be utilized as an adsorbent. Moreover, it is suggested that the granular sugar-based carbon should be investigated in the following future study in the wastewater treatment process.
Co-Authors Afifa Luthfia Afriyanti Afriyanti Agam Muarif Aldilla Zuhra Amri Ismail ARDIANSYAH ARDIANSYAH Ariski Saina Ariski Saina Aulia Fahri Ayu Sutia Amanda Azhari Azhari Azhari Azril Fahmi Cut Agusniar Cut Ita Erliana Cut Khairunnisa Debi Liani Pasaribu Dennis Eka Syahputra Dion Aidil Putra Efri Marnelisa Eka Intan Kumala Putri Eka Mutia Eka Sri Astuti Esty Febrina Etty Centaury Siregar Evana Evana Fadli Jalil Faisal Faisal Ferri Safriwardy Fibarzi, Wiza Ulfa Fikri Hasfita Fikri Hasfita firdaus Gusvi Aulia Intan Sulastri Ishak Ishak Ishak Ishak Jalaluddin Jalaluddin Kamar, Iqbal Khairunnisa Laksita Ika Paksi Leni Maulinda Leni Maulinda Leni Maulinda, Leni Leni, Maulinda Lidya Permata Lestari Lidya Permata Lestari Lukman Hakim Lukman Hakim Lukman Hakim M R F Rahman Mahyuni Marito Harahap Marlina Marlina Maryanti Maryanti Masrullita Masrullita Masrullita, M Masrullita, Masrullita Meriatna Meriatna Muhammad Muhammad Abrar Muhammad Akbar Riza Muhammad Fahrur Rozi Muhammad Muhammad Muhammad Muhammad Muhammad Safrijal Mulyawan Mulyawan Mutammimul Ula Mutia Sukma Mutiara Lestari Simanjuntak Nadia Prisca Putri Narul ZA Nasrul ZA Nasrul ZA Nikmat Wanda Novi Sylvia Nurdina Hayati Nurlian Nurlian Nurlian Nurmalita Nurmalita Nurul Azizah Purwoko, Agus Puspita S S Putroe Zohara Safura R.A Nita Rosalinda Muttaqin Rahmadhani Rahmadhani Raudhatul Ulfa Rauzatun Jannah Reza Abdillah Harahap Reza Dwi Fani Rina Afriani Rizka Mulyawan Rizka Mulyawan Rizka Mulyawan Rizka Mulyawan Rizka Nurlaila Rozanna Dewi Safrina Melya Safriwardi, Ferri Setia Budi Siddik Darmawan Siswahyudianto Sulahatun, Sulhatun Sulhatun Sulhatun Suryani Suryani Syafira Dara Syamsul Bahri Syamsul Bahri Tiara Rozah Wan Rafly Wiza Ulfa Fibarzi Wusnah Wusnah Wusnah, Wusnah Yurni, Irma Zainuddin Ginting Zukhrufi Dina Nasution Zulmiardi Zulmiardi Zulmiardi, Zulmiardi Zulnazri, Z Zuraida Zuraida