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Karakterisasi Abu Sekam Padi dengan Menggunakan XRD samik samik; Nita Kusumawati; Maria Monica Sianita; Dina Kartika Maharani; Amalia Putri Purnamasari; Mukhlash Imaduddin; M Iqbal Al Ghifari
Unesa Journal of Chemistry Vol 11 No 3 (2022)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

Rice husk ash is a material that mostly contains silica (SiO2). Silica can be used as a raw material for various industries. This research is an experimental study, covering the synthesis of rice husk ash with various calcination temperatures, namely 800 oC, 900 oC, and 1000 oC. The purpose of this study was to identify the type of solid and crystalline phases of RHA so that the results of this study could be used as a basis for further research on the use of RHA. The results of the synthesis produced four types of samples, namely samples calcined at a temperature of 800 oC (coded S-800), calcined at 900 oC was gray (S-900 A), calcined at 900 oC was white (S-900 P), and samples were calcined at a temperature of 1000 oC (S-1000). Characterization using X-Ray Diffraction (XRD) showed that all samples included crystalline solids with the tridymite crystal phase and cristobalite were detected in samples S-800, S-900 P, S-900 A, and S-1000. Cristobalite and tridymite are silica mineral polymorphs with the same chemical formula as quartz, SiO2, but have different crystal structures. The percentage of crystallinity of the sample was calculated by comparing the sample which has the highest peak intensity (S-1000). The crystallinity results for S-1000, S-900 P, and S-900 A were 100%, 96%, 79%, and 32%. The lower the calcination temperature, the smaller the percentage of crystallinity. Keywords: rice husk ash, calcined, silica, XRD, crystalline solid

PELATIHAN PEMBUATAN SABUN SEBAGAI BEKAL WIRAUSAHA UNTUK SANTRI PONDOK PESANTREN AMANATUL UMMAH PACET Purnamasari, Amalia Putri; Andika Pramudya Wardana; Muhammad Nurrohman Sidiq; Fitriari Izzatunnisa Muhaimin; Indah Ardiningsih; Sisca Desi Prastyaningtias
Jurnal Pengabdian Masyarakat FKIP UTP Vol 7 No 1 (2026): PROFICIO : Jurnal Abdimas FKIP UTP
Publisher : FKIP UNIVERSITAS TUNAS PEMBANGUNAN SURAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jpf.v7i1.5416

Salah satu aspek yang sangat penting dalam kehidupan bermasyarakat adalah kebersihan. Kebersihan adalah kunci untuk menjaga kesehatan, kenyamanan, dan kualitas hidup. Hal ini juga berlaku bagi santri pondok, yang merupakan bagian dari masyarakat Islam yang memiliki tanggung jawab untuk menjaga diri, lingkungan, dan agama. Salah satu program unggulan Gubernur Jawa Timur adalah one pesantren one product (OPOP) yang merupakan sebuah program peningkatan kesejahteraan masyarakat berbasis Pondok Pesantren melalui pemberdayaan santri, pesantren, dan alumni pondok. Program ini juga sejalan dengan visi pemerintah pusat untuk mendorong ekonomi syariah dan pemberdayaan umat. Dalam rangka mendukung program OPOP, tim pengusul PKM ini telah memberikan pelatihan cara pembuatan sabun kepada mitra pondok pesantren Amanatul Ummah di Pacet, Mojokerto pada 29 Agustus 2024. Melalui kegiatan pelatihan pembuatan sabun dapat menunjang kebersihan santri sekaligus membekali santri untuk berwirausaha dan mendukung program OPOP yang dicanangkan oleh pemerintah. Berdasarkan hasil angket yang diisi oleh peserta, dapat disimpulkan bahwa mayoritas peserta (91%) merasa puas dengan pelatihan yang diberikan.

PELATIHAN PENGEMASAN, LABELLING, DAN BUSINESS PLAN PRODUK KOMPOS PADAT DI DUSUN BRAU, KECAMATAN BUMIAJI, KOTA BATU Purnamasari, Amalia Putri; Sari Edi Cahyaningrum; Amaria; Dina Kartika Maharani; Andika Pramudya Wardana; Indah Ardiningsih
Jurnal Pengabdian Masyarakat FKIP UTP Vol 7 No 1 (2026): PROFICIO : Jurnal Abdimas FKIP UTP
Publisher : FKIP UNIVERSITAS TUNAS PEMBANGUNAN SURAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jpf.v7i1.5717

Salah satu komunitas peternak sapi perah ada di Dusun Brau, Kecamatan Bumiaji, Kota Batu. Seiring dengan tingginya produk susu yang dihasilkan, limbah peternakan sapi yang dihasilkan juga tinggi. Melalui kegiatan pengabdian masyarakat yang dilakukan pada tahun 2023, anggota Koperasi Margo Makmur Mandiri sebagai perwakilan masyarakat Dusun Brau, Kecamatan Bumiaji, Kota Batu telah mampu melakukan pengolahan limbah peternakan sapi menjadi kompos padat. Kegiatan pengabdian masyarakat tahun 2024 ini, merupakan bentuk kegiatan lanjutan. Tujuan dari kegiatan pelatihan pengemasan, labelling, dan business plan produk kompos padat di desa Brau, peserta dapat: (1) memahami konsep dan teknik pengemasan, labelling, dan business plan yang sesuai dengan standar kualitas dan keamanan produk kompos padat, (2) dapat mengaplikasikan pengetahuan dan keterampilan yang diperoleh dalam kegiatan pelatihan untuk meningkatkan nilai tambah dan daya saing produk kompos padat yang dihasilkan oleh kelompok koperasi Margo Makmur Mandiri di desa Brau, (3) dapat melakukan praktik wirausaha dengan memasarkan produk dalam skala kecil. Dengan demikian, dengan adanya kegiatan pengabdian masyarakat ini, diharapkan dapat memberikan peningkatan pengetahuan dan pemahaman untuk selanjutnya dapat diterapkan oleh peserta dalam memasarkan produk. Kegiatan evaluasi hasil pelatihan dilakukan melalui angket respon yang diisi oleh peserta.

Functionalization of L-Cystein On Magnetite As Magnetic Adsorbent Metals for SDG 14 Amaria Amaria; Dina Kartika Maharani; Amalia Putri Purnamasari; Sari Edi Cahyaningrum; Aisha Setiyanti
Journal of Current Studies in SDGs Vol. 3 No. 1 (2027): March
Publisher : Sekolah Tinggi Agama Islam Sabilul Muttaqin Mojokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63230/jocsis.3.1.251

Objective: The increasing consumption of gold (Au) in the electronics, catalysis, and medical sectors has led to the depletion of primary ore resources while increasing the accumulation of electronic waste (e-waste) which reaches 62 million tons per year globally. Therefore, the development of selective, efficient, and environmentally friendly Au(III) recovery technology from secondary sources is very urgent. This study aims to synthesize and characterize magnetic adsorbents based on magnetite (Fe3O4@Cys) functionalized with L-Cysteine (Fe3O4@Cys) and evaluate its performance in the recovery of Au(III) ions from aqueous solutions. Method: L-Cysteine was chosen because it contains a thiol group (-SH) which has a high affinity for Au(III) based on the hard-soft acid-base (HSAB) theory. The synthesis was conducted through silica coating followed by L-cysteine immobilization using GPTMS as a coupling agent. Results: FTIR analysis confirmed the presence of Fe–O, Si–O–Si, and Si–OH groups, indicating successful functionalization. XRD results showed that the magnetite crystal structure was retained after modification, with a crystallite size of 16.43 nm and the presence of amorphous silica. Novelty: The synthesized Fe3O4@Cys exhibited good acid stability, demonstrating its potential as a selective magnetic adsorbent for Au(III) recovery from secondary resources.

Functionalization of L-Cystein On Magnetite As Magnetic Adsorbent Metals for SDG 14 Amaria Amaria; Dina Kartika Maharani; Amalia Putri Purnamasari; Sari Edi Cahyaningrum; Aisha Setiyanti
Journal of Current Studies in SDGs Vol. 3 No. 1 (2027): March
Publisher : Sekolah Tinggi Agama Islam Sabilul Muttaqin Mojokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63230/jocsis.3.1.251

Objective: The increasing consumption of gold (Au) in the electronics, catalysis, and medical sectors has led to the depletion of primary ore resources while increasing the accumulation of electronic waste (e-waste) which reaches 62 million tons per year globally. Therefore, the development of selective, efficient, and environmentally friendly Au(III) recovery technology from secondary sources is very urgent. This study aims to synthesize and characterize magnetic adsorbents based on magnetite (Fe3O4@Cys) functionalized with L-Cysteine (Fe3O4@Cys) and evaluate its performance in the recovery of Au(III) ions from aqueous solutions. Method: L-Cysteine was chosen because it contains a thiol group (-SH) which has a high affinity for Au(III) based on the hard-soft acid-base (HSAB) theory. The synthesis was conducted through silica coating followed by L-cysteine immobilization using GPTMS as a coupling agent. Results: FTIR analysis confirmed the presence of Fe–O, Si–O–Si, and Si–OH groups, indicating successful functionalization. XRD results showed that the magnetite crystal structure was retained after modification, with a crystallite size of 16.43 nm and the presence of amorphous silica. Novelty: The synthesized Fe3O4@Cys exhibited good acid stability, demonstrating its potential as a selective magnetic adsorbent for Au(III) recovery from secondary resources.

Synthesis and Characterization of ZnO/CaO Nanocatalysts and Utilization in Biodiesel Transesterification Reaction from Waste Cooking Oil Neristia Viky Marta; Amalia Putri Purnamasari
Jurnal Pijar MIPA Vol. 21 No. 4 (2026)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v21i4.11991

The increase in global energy demand has led to increased consumption of fossil fuels, resulting in increasingly depleted energy reserves. In addition, the use of fossil fuels has various negative environmental impacts, including air pollution, global warming, and greenhouse gas emissions. Therefore, the development of environmentally friendly, sustainable alternative energy sources is needed. One renewable energy source with development potential is biodiesel. This study aims to synthesize biodiesel from waste cooking oil through a transesterification reaction using ZnO/CaO nanocatalysts. The novelty of this research lies in the synthesis of ZnO/CaO nanocatalysts via a combination of sol-gel and impregnation methods, which are expected to increase the catalysts' surface area, stability, and catalytic activity. The CaO catalyst was synthesized using the sol-gel method and modified with ZnO through a wet impregnation method using Zn acetate precursor at various concentrations of 0%, 1%, 2%, and 3%. FTIR and XRD characterizations confirmed the success of ZnO impregnation on CaO, while PSA analysis showed a decrease in particle size from 107.85 nm on CaO to 79.28 nm on 1% ZnO/CaO, which has the potential to increase catalytic activity. The transesterification reaction was carried out at 65°C for 2 hours, using a methanol-to-oil molar ratio of 1:9 and a catalyst loading of 3% of the oil weight. The resulting biodiesel was then analyzed using GC-MS, and it was found that ZnO modification increased the methyl ester area percentage from 92.74% in CaO to 99.61% in ZnO/CaO 1%. In addition, the highest biodiesel yield using 1% ZnO/CaO produced a density of 853.8 kg/m³, a viscosity of 2.30 mm²/s (cSt), a water content of 0.02%, and an acid number of 0.43 mg-KOH/g.

PELATIHAN PENGENDALIAN MUTU PRODUK FERMENTASI SUSU SAPI (YOGURT) DI DUSUN BRAU, KOTA BATU Ardiningsih, Indah; Amaria; Putri Purnamasari, Amalia; Fitona Ridasepri, Arikasuci; Rullyansyah, Subhan; Charis Aqsa, Aulia
Jurnal Pengabdian Masyarakat FKIP UTP Vol 7 No 2 (2026): PROFICIO : Jurnal Abdimas FKIP UTP
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jpf.v7i2.7069

Pengabdian masyarakat ini bertujuan meningkatkan pengetahuan dan keterampilan pengendalian mutu produksi yogurt bagi anggota Koperasi Margo Makmur Mandiri di Dusun Brau, Kecamatan Bumiaji, Kota Batu, sentra susu sapi Jawa Timur yang menghadapi tantangan inkonsistensi kualitas olahan susu akibat minimnya pemahaman higienitas dan pengujian mutu. Kegiatan dilaksanakan pada 20 Juli 2025 dengan metode partisipatif: pre-test (10 soal higienitas), pemaparan materi (bahan baku, fermentasi, SNI 2981:2009, uji pH-organoleptik), praktik kelompok, post-test, dan angket kepuasan. Hasil menunjukkan keberhasilan signifikan: nilai post-test naik rata-rata 20-50 poin per peserta (12 peserta hadir), dengan tren pre/post-test positif pada mayoritas individu. Survei kepuasan menunjukkan lebih dari 75% peserta sangat puas secara keseluruhan. Luaran kegiatan berupa video YouTube, publikasi media (nusantaraabadinews.com), dan artikel jurnal pengabdian ini. Metode pelatihan yang digunakan sederhana dan mudah dipahami, meskipun kurang sesuai apabila skala produksi meningkat tajam. Kegiatan ini mudah dilaksanakan dan membuka peluang pengembangan jangka panjang, termasuk sertifikasi SNI dan inovasi rasa.

Synthesis and Characterization of ZnO Nanoparticles with Red Betel Leaf Extract (Piper crocatum) as a Capping Agent Using the Sonication Method Luthfiyah Isyrak; Amalia Putri Purnamasari
Jurnal Pijar MIPA Vol. 21 No. 5 (2026): in Progress
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v21i5.12409

The green synthesis of zinc oxide (ZnO) nanoparticles utilizing plant extracts offers an economical, non-toxic, and sustainable alternative to conventional chemical methods. This study comprehensively investigated the structural and optical optimization parameters by evaluating the effects of varying volume ratios of red betel leaf extract (Piper crocatum) to 0.1 M ZnSO4.7H2O precursor, alongside assessing the impact of alkaline pH variations. The entire synthesis procedure was assisted by ultrasound sonication for 30 minutes to enhance particle homogeneity and effectively prevent premature structural agglomeration. Optimization monitored through UV-Vis spectrophotometry revealed that the most optimal volume configuration was achieved at a 1:5 ratio, yielding the maximum specific absorption peak of 0.440 at a wavelength of 337.5 nm. Concurrently, pH 10 was determined to be the optimum alkaline condition, yielding a stable peak absorbance of 0.204 at 326 nm, driven by abundant hydroxyl (OH-) ions, which govern the rates of hydrolysis and nucleation. Structural characterization through X-Ray Diffraction (XRD) confirmed the formation of a pure hexagonal wurtzite crystal phase with high crystallinity, matching ICDD PDF No. 04-015-4060, revealing an average crystallite size of 30.5 nm. Fourier Transform Infrared (FTIR) analysis confirmed the characteristic Zn-O metal-oxygen stretching vibration at 423.22 cm-1, along with organic bands (O-H, C=O, and C-O), demonstrating that the extract phytochemicals functioned effectively as natural capping agents. Lastly, Particle Size Analyzer (PSA) testing confirmed a hydrodynamic particle size of 8.44 nm with a Polydispersity Index (PDI) of 0.1729, signifying monodispersed nanoparticles with excellent uniform distribution suitable for various advanced materials and surface-dependent technological applications.

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