Article Per Year (5 Year)
p-Index From 2020 - 2025
1.978
P-Index
This Author published in this journals
All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Chemistry Indonesian Journal of Chemical Research Fullerene Journal of Chemistry Molluca Journal of Chemistry Education (MJoCE) Biofaal Journal Jurnal Teknik Kimia dan Lingkungan INASUA: Jurnal Teknologi Hasil Perikanan Innovation for Community Service Journal Jurnal Akademika Kimia
Fransina, Eirene G.
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Engineering Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Physics Social Sciences Other

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

 1   2   3 
Synthesis of Silver Nanoparticles using Gandaria Seeds Bioreductor Bijang, Catherina M.; Hasanela, Nurani; Joris, Shielda N.; Fransina, Eirene G.; Tahril, Tahril; Azis, Thamrin; Tehuayo, Ahmadin
Jurnal Akademika Kimia Vol. 12 No. 2 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2023.v12.i2.pp142-148

Abstract

The silver nanoparticles (NPP) are synthesized with the chemical reduction method by using a water extract bioreductor of gandaria seed (Bouea macrophylla G.) which acts as a reducing precursor, in this case, AgNO3 Ag+ is reduced to AgO. The concentration of AgNO3 is made between 0.5 mm and 1 mm. The characteristic of NPP is unstable, so a modification is needed with and without the addition of PVA 1 %. The process of NPP shaping is monitored by observing the uptaken of UV - Vis when the color changes occur. The high NPP concentration of AgNO3 has higher absorbance and is wider if compared to the lower AgNO3 concentration. The result of this research based on the absorbance value and the wavelength showed the NPP synthesized without the addition of PVA 1 % (b/v) is wider. The addition of PVA 1 % (b/v) provides better stability and maintains the absorbance of spectrum changes from day to day. The maximum uptaken of UV-Vis from NPP AgNO3 0.5 mm by using green synthesis and 1 mm without adding PVA are 0.946 and 0.980, respectively. However, NPP with the addition of PVA has 0.968 and 0.978 absorbance. The best concentration of NPP produced was 1 mm AgNO3.
Isoterm Adsorpsi Zat Warna Rhodamin B Menggunakan Karbon Aktif Limbah Sisik Ikan Kakap Putih (Lates calcarifer) Sebagai Adsorben Tanasale, Matheis F.J.D.P.; Latupeirissa, Jolantje; Fransina, Eirene Grace; Muliana, Muliana
Jurnal Kimia Fullerene Vol 9 No 1 (2024): Fullerene : Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v9i1.413

Abstract

Adsorption rhodamine B dye using adsorbent of activated carbon from fish scales has been done. The study aims to determine the adsorption isotherm. Activated carbon was obtained through the process of carbonization, putting the fish scales into the furnace at 350 °C and characterized by XRD, the results showed that the three peaks with intensity in their regions were 26.45o, 32.69o, and 33.60o. It was calcined at the temperature of 450 °C and characterized by XRD. The results showed peaks shift were 26.52o, 29.66o, and 32.77o. The activation charcoal in a 3M KOH, dried in oven at 110 °C and characterized by XRD. The results showed, peaks with the highest intensity were 26.22o, 29.12o, and 32.43o, and the basal spacing is biggest than before activation. The determination of rhodamine B dye adsorption was characterized by UV-Vis spectrophotometer. The results showed that the optimum condition were 0.8 g mass adsorbent, the contact time of 100 minutes at pH of 3, and concentration of 10 ppm. The adsorption of rhodamine B dye using activated carbon from fish scales followed Freundlich isotherm with correlation coefficient (r2), KF, and n were 99.68%, 0.6298 mg/g, and 1.8685 respectively that showed fisisorption process.
Inovasi Pengolahan Limbah Air Kelapa menjadi Cuka Kelapa sebagai Upaya Peningkatan Ekonomi Lokal di Desa Oma, Pulau Haruku, Maluku Tengah Gaspersz, Nelson; Male, Yusthinus Tobias; Bandjar, Adriani; Sekewael, Serly Jolanda; Fransina, Eirene Grace; Sohilait, Stephanie Pascal
Innovation for Community Service Journal Vol 3 No 2 (2025): Oktober 2025
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v3i2.22895

Abstract

Maluku memiliki potensi sumber daya alam yang melimpah, salah satunya kelapa yang banyak tumbuh di wilayah pesisir seperti Desa Oma, Kecamatan Pulau Haruku, Kabupaten Maluku Tengah. Selama ini, masyarakat hanya memanfaatkan daging buah kelapa untuk konsumsi rumah tangga, sedangkan air kelapa sering dibuang sebagai limbah. Padahal, air kelapa mengandung karbohidrat yang dapat diolah menjadi produk bernilai ekonomi seperti cuka kelapa melalui proses fermentasi. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk memberdayakan masyarakat Desa Oma, khususnya kelompok ibu-ibu PKK, dalam meningkatkan nilai ekonomis limbah air kelapa melalui pelatihan pembuatan cuka kelapa dengan teknologi tepat guna. Metode pelaksanaan meliputi penyuluhan, diskusi kelompok (FGD), serta pelatihan teknis pembuatan cuka kelapa dengan fermentasi anaerob menggunakan ragi dan urea (food grade). Hasil kegiatan menunjukkan peningkatan pengetahuan dan keterampilan masyarakat dalam mengolah air kelapa menjadi produk cuka siap pakai dan bernilai jual. Produk yang dihasilkan dikemas dalam botol berlabel sebagai produk unggulan lokal. Kegiatan ini tidak hanya mendukung pengurangan limbah organik, tetapi juga membuka peluang ekonomi baru bagi masyarakat Desa Oma melalui penerapan konsep ekonomi sirkular berbasis potensi lokal.
Co-Authors Bandjar, Adriani Bijang, Catherina M. Bijang, Catherina Manukpadang Dolaitery, Lois Mikhal DOMINGGUS MALLE Fensia Analda Souhoka Gaspersz, Nelson Hanoch J Sohilait Hasanela, Nurani Hattu, Nikmans Hehanussa, Susan I Wayan Sutapa Idi, Paulus R. R. Ivonne Telussa Jansen, Feky Joris, Shielda N. Kalauw, Kalsum Landu, Sartika Latupeirissa, Astrid Latupeirissa, Jolantje Male, Yusthinus Tobias Matheis F.J.D.P. Tanasale Matrutty, Theodora E. A. A. Muliana, Muliana Noya, Alesya Pada, Semuel S. Pattiasina, Priska Marisa Rahayu Rahayu Rumakat, Dewi H Sanawain, Lea Sekewael, Serly Jolanda Seumahu, Cecelia A Seumahu, Cecelia A. Seumahu, Cecelia Anna Singerin, Joisana Sitania, Hizkia J. Sohilait, Hanoch J. Sohilait, Mario R. Sohilait, Stephanie Pascal Sopacua, Josina Sopamena, Helna Lourita Stefanus, Quendeline Tahril Taipabu, Muhammad Ikhsan Tanasale, Matheis F. J. D. P. Tapotubun, Alfonsina M. Tehuayo, Ahmadin Telussa, Ivon THAMRIN AZIS Wattimury, Jusuf Yusthinus T. Male