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All Journal Reaktor Jurnal Natur Indonesia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Akta Kimia Indonesia Chemistry Indonesian Journal of Chemical Research JURNAL PHOTON J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Journal of Bioprocess Chemical and Environmental Engineering Science Bulletin of Chemical Reaction Engineering & Catalysis
Muhdarina Muhdarina
Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Riau, Kampus Bina Widya, Simpang Baru, Tampan Pekanbaru 28293, Telp, +6276163273
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Nursing Physics

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Tremendous Performance Manganese Oxide Via Coprecipitation Method for Degradation of Palm Oil Mill Effluent Prasetya, Prasetya; Muhdarina, Muhdarina; Saputra, Edy; Awaluddin, Amir
Photon: Jurnal Sain dan Kesehatan Vol. 14 No. 2 (2024): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v14i2.5082

Abstract

Increased production in industries tends to increase burden and complexity of waste produced. For this reason, it was necessary to develop materials that have good degradation capabilities and into environmental products. In this research, the MnO2 has been synthesized using the strategy of coprecipitation and reducing agents. The as-synthesized MnO2 is then used for the degradation of methylene blue. The results of this study indicate that different strategy of coprecipitation and reducing agents produce different MnO2 and has unique properties as nano-hierarchical microstructure. Using citric acid as a reducing agent results in a hierarchical structure of α-MnO2 and Mn2O3, while oxalic acid produces a hierarchical structure of β-MnO2 and Mn2O3. To optimize the degradation of Palm Oil Mill Waste which contains a high concentration of pollutants, it still needs to be improved. From the parameters pH, chemical oxygen demand, oil & grease, and total suspended solids, the best degradation efficiency of each parameter was achieved at pH 8.8, 16.3%, 43.5% and 56.6%.
Pemberdayaan Masyarakat Melalui Pemanfaatan Limbah Dedak Padi Sebagai Pakan Buatan Ikan Lele Di Desa Kemuning Muda, Kecamatan Bunga Raya, Kabupaten Siak: Community Empowerment through the Utilization of Rice Bran Waste as Artificial Feed for Catfish in Kemuning Muda Village, Bunga Raya District, Siak Regency Nurhayati; Muslim Syaifullah, Mhd; Jasril, Jasril; Fawrin, Heralda; Muhdarina, Muhdarina
J-Dinamika : Jurnal Pengabdian Masyarakat Vol 10 No 1 (2025): April
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Desa Kemuning Muda di Kecamatan Bunga Raya, Kabupaten Siak, Riau, merupakan daerah dengan produksi padi yang melimpah. Dalam proses penggilingan, dedak padi dihasilkan sebagai limbah, tetapi belum dimanfaatkan secara optimal oleh masyarakat. Selain itu, beberapa warga desa melakukan budidaya ikan, termasuk ikan lele, yang terkendala oleh tingginya biaya pakan yang mencapai 60-70% dari biaya produksi. Pemanfaatan dedak padi sebagai pakan lele menawarkan solusi untuk mengurangi biaya produksi sekaligus mengelola limbah pertanian. Pembuatan pakan melibatkan alat sederhana, seperti panci dan kompor, serta bahan-bahan seperti dedak halus, pelet, ikan asin halus, garam, minyak, dan air. Prosesnya dimulai dengan mencampur pelet yang telah dilelehkan dalam air panas dengan dedak halus, minyak, garam, dan ikan asin. Adonan kemudian dibentuk menjadi pelet kecil dan dikeringkan di bawah sinar matahari agar awet. Pakan lele juga dapat dibuat menggunakan metode fermentasi dengan menambahkan pupuk organik cair mikroorganisme (EM4). Bahan kering dicampurkan terlebih dahulu, kemudian larutan EM4 ditambahkan dan diaduk hingga merata. Proses fermentasi dilakukan selama 3-5 hari. Pakan alternatif ini siap digunakan dan menawarkan manfaat bagi pembudidaya lele dalam mengurangi biaya serta meningkatkan keberlanjutan lingkungan.
Synthesis and Characterization of CaO-SiO2 Heterogeneous Catalyst of Blood Cockle Shells and Coconut Fiber Ash for Biodiesel Production from Crude Palm Oil Nurhayati, Nurhayati; Muhdarina, Muhdarina; Linggawati, Amilia; Siregar, Siti Saidah
Indonesian Journal of Chemistry Vol 25, No 4 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.91444

Abstract

The utilization of sustainable and renewable materials, specifically CaO derived from blood clam shells and SiO2 extracted from coconut fiber, as catalysts for biodiesel production not only promotes waste valorization but also enhances catalytic efficiency, providing an eco-friendly and effective solution for biodiesel synthesis. The present study was synthesized and characterized CaO-SiO2 catalysts using the impregnation method with SiO2 content at 3, 5, and 7 wt.%. Characterization included surface area (BET), crystallinity and crystal size (XRD), chemical composition (XRF), functional groups (FTIR), and acidity-basicity (pyridine adsorption and titration). The maximum biodiesel yield of 96.29% was achieved under optimized conditions: 2 wt.% catalyst loading, 90-min reaction time, 60 °C temperature, and a 1:9 oil-to-methanol molar ratio, determined using response surface methodology (RSM). The synthesized biodiesel was evaluated according to ASTM D6751 standards, and its purity and methyl ester composition were analyzed using GC-MS. The results showed that the CaO-SiO2 catalyst achieved a biodiesel purity of 97.44%, higher than that obtained with unmodified CaO. This research successfully modified the CaO-SiO2 heterogeneous catalyst, enhancing its surface area and acidity, which led to an increase in the purity and yield of biodiesel synthesized from crude palm oil with high free fatty acid content.
Sintesis dan Karakterisasi Katalis Nikel Zeolit Alam Ni/NZA Bahri, Syaiful; Saputra, Edy; Herman, Syamsu; Muhdarina, Muhdarina
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 1 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.1.36-45

Abstract

Research has been conducted to manufacture Ni/NZA for catalytic cracking of empty palm fruit bunches into liquid fuel. The study aims to investigate the impact of metal impregnation and calcination time variations on catalyst crystallinity and morphology. The catalyst is produced in multiple stages, including NZ activation using acid, followed by metal impregnation at 0%, 1%, 3%, and 5% w/w, and calcination at 500oC for 2, 4, and 6 hours, respectively. It is then oxidized at 400oC for 2 hours and reduced at 400oC for 2 hours. The catalyst's crystallinity, morphology, and metal distribution are determined through X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) analysis. The catalyst with the best crystallinity and metal distribution is found to have 3% metal loading and a calcination time of 2 hours.
Sintesis Katalis Fe/SOD Berbasis Lempung Alam Maredan Untuk Mendegradasi Zat Warna Metilen Biru Elis Damayanti; Amir Awaluddin; Muhdarina Muhdarina
ALCHEMY Jurnal Penelitian Kimia Vol 18, No 1 (2022): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.18.1.47874.122-129

Abstract

Zeolit merupakan material yang sangat aplikatif yang dapat disintesis dengan bahan baku yang kaya akan silika ataupun alumina. Lempung Maredan termasuk sumber daya alam Riau yang mengandung silika dan alumina dan telah diubah menjadi zeolit jenis sodalit (SOD). Namun, sodalit yang dihasilkan masih memiliki kristalinitas rendah dan belum diujiaplikasikan. Dalam penelitian ini, SOD disintesis and dilanjutkan dengan impregnasi Fe menggunakan prekursor Fe(NO3)3.9H2O dan kalsinasi pada 400 °C selama 4 jam. Padatan yang terbentuk dikarakterisasi secara XRD, EDX dan FTIR untuk menentukan struktur, kristalinitas, ukuran kristal, jumlah Fe yang terimpregnasi serta pita vibrasi Fe. Padatan ini diperankan sebagai katalis untuk degradasi zat warna metilen biru. Hasil karakterisasi menunjukkan bahwa material baru yang terbentuk adalah mineral SOD dan hematit. Kristalinitas SOD dan SOD dalam Fe/SOD berturut-turut 49,62% dan 25,49% dengan ukuran kristal masing-masing 52,50 nm dan 4,40 nm. Keberhasilan impregnasi dibuktikan oleh analisis EDX dengan meningkatnya jumlah atom Fe pada Fe/SOD dari 1,46% hingga 22,80% serta munculnya pita vibrasi FeO dan Al‒Fe‒OH masing-masing pada bilangan gelombang 430 ‒ 470 cm-1 dan 3640 ‒ 3660 cm-1 berdasarkan analisis FTIR. Katalis Fe/SOD mampu mendegradasi zat warna metilen biru sebanyak 98,80% dalam waktu 10 menit dengan dosis katalis 0,5 gL-1.Synthesis of Fe/SOD Catalyst Based on Maredan Natural Clay to Degrade Methylene Blue Dye. Zeolite is a highly applicable material that can be synthesized using silica or alumina-rich raw materials. Maredan clay is one of Riau's natural resources, which contains silica and alumina and has been converted to zeolite sodalite (SOD). However, the resulted sodalite still possesses low crystallinity and has not been tested. In this study, SOD was synthesized and was followed by the impregnation of Fe using Fe(NO3)3.9H2O as a precursor and calcination at 400 °C for 4 hours. The solid formed was characterized by XRD, EDX, and FTIR to determine the structure, crystallinity, crystal size, amount of impregnated Fe, and vibration band of Fe. The solid was then used as the catalyst for methylene blue degradation. The characterization result indicated that the newly formed materials were composed by SOD and hematite. The crystallinity of SOD and SOD in Fe/SOD were 49.62% and 25.49% respectively, with the crystal size of 52.50 nm and 4.40 nm, respectively. The impregnation result was confirmed by EDX analysis marked by the increase of the number of Fe atoms in Fe/SOD from 1.46% to 22.80%, as well as the presence FeO and Al‒Fe‒OH vibration bands at the wavenumbers of 430 ‒ 470 cm-1 and 3640 ‒ 3660 cm-1, respectively, based on FTIR analysis. The Fe/SOD catalyst was able to reduce of methylene blue dye by 98.80% for 10 minutes with the catalyst dose of 0.5 gL-1.
Co-Authors - Hafizhah - Midiyarti - Nurhayati - Nurhayati -, Zaiyar A.A. Ketut Agung Cahyawan W Abdul Wahab Mohammad Ade Priyanto, Ade Ahmad Afandi Amilia Linggawati Amir Awaluddin Andanastuti Muchtar Awaluddin A. Edy Saputra Elis Damayanti F., Malik Fahrezi, Irgi Ahmad Fawrin, Heralda Fitri Andiyani Hafizhah, - Jasril Jasril Kiky Corneliasari Sembiring Mhd. Reza Pahlepi Midiyarti, - Muslim Syaifullah, Mhd Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati, Nurhayati Nurwijayanti Prasetya, Prasetya Siregar, Siti Saidah SYAIFUL BAHRI Syamsu Herman T. Ariful Amri Yulianti Yulianti Zetria Pujiana