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All Journal Jurnal Rekayasa Material, Manufaktur & Energi Sorption Studies
Hamidah, Fikriyah
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Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology

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Pemanfaatan Jamur Tiram Putih (Pleurotus Ostreatus) Sebagai Biomaterial Konstruksi Militer Ramah Lingkungan Aritonang, Sovian; C Lubis, Astrid Blandina; Ramadhanty, Chrisna Prawiradhiva; Hamidah, Fikriyah; Hutama, Raihansyah Raja
Rekayasa Material, Manufaktur dan Energi Vol 7, No 1: Januari 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i1.17289

Abstract

Developments in the 21st century require the development of technology, one of which is construction material technology. The construction material generally used is conventional concrete on the market. However, in its use, conventional concrete is not environmentally friendly. Therefore, biomaterials were developed from the use of white oyster mushrooms with various media. This study of biomaterials develops mycelium using three types of media, namely rice husk waste, corn stalk waste and wood dust waste. The aim of this research is to obtain optimal media for the growth of white oyster mushrooms. The cellulose content of corn stalks, rice husks, and sawdust were 33%, 38%, and 41%, respectively. The research results showed that sawdust waste media was the best medium as a fungal growth medium. Wood dust waste with a cellulose content of 41% can produce the growth of mold as high as 8.62 cm. In rice husk waste media with a cellulose content of 38%, 5.62 cm was obtained. Then, on corn stalk waste media with a cellulose content of 33%, fungal growth was obtained as high as 0.632 cm
Modification of Calcium Oxide Catalyst Derived from Chicken Eggshell Waste with Magnesium Oxide to Enhance Biodiesel Synthesis from Crude Palm Oil Hamidah, Fikriyah; Septaningsih, Dewi Anggraini; Fahri, Mirad; Basuki, Rahmat; Gunaryo; Subiakto, Amadea Kenyoning Hapsari; Nismarawati, Ardine Kusuma; Ningrum, Hanifa Setya; Fajry, Zaydan Al; Erwinda, Maura Agnes; Afandi, Achmad Kusyairi
Sorption Studies Vol. 1 No. 2 (2025): Sorption Studies, December 2025
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ss.v1i2.115

Abstract

Biodiesel is a promising renewable energy source to replace conventional diesel fuel. This study aims to improve biodiesel production efficiency by utilizing a heterogeneous catalyst derived from chicken eggshell-based calcium oxide (CaO), modified with magnesium oxide (MgO). The catalyst was synthesized via co-precipitation and applied in both transesterification and interesterification reactions using crude palm oil (CPO) as feedstock. The optimum reaction was conducted at 65°C for 180 minutes with a 9:1 methyl acetate/methanol to oil molar ratio and 2.5 wt% catalyst loading. The modified CaO.MgO catalyst outperformed unmodified CaO, yielding 89.63% and 99.96% biodiesel via interesterification and transesterification, respectively. The catalyst characterization was performed using FTIR, XRD, and GC-MS, confirming the enhancement in basicity, crystallinity, and FAME content. This study demonstrates the potential of waste-derived catalysts in sustainable biodiesel production while addressing environmental waste issues.
Co-Authors Afandi, Achmad Kusyairi Aritonang, Sovian C Lubis, Astrid Blandina Erwinda, Maura Agnes Fahri, Mirad Fajry, Zaydan Al Gunaryo Hutama, Raihansyah Raja Ningrum, Hanifa Setya Nismarawati, Ardine Kusuma Rahmat Basuki Ramadhanty, Chrisna Prawiradhiva Septaningsih, Dewi Anggraini Subiakto, Amadea Kenyoning Hapsari