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Lisa Adhani
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Dealumination Effect on ZSM-5 as a Bimetal Fe-Co Support for The Oxidative Desulfurization Process Catalyst Adhani, Lisa; Susanto, Bambang Heru; Nasikin, Mohammad
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 1, May 2024
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i1.38456

Abstract

Petroleum fuel is still the main energy source today but causes environmental problems such as SOx gas emissions. The Oxidative Desulfurization (ODS) method removes sulfur from fuel under mild conditions. ZSM-5 is a catalyst framework considered promising in the ODS process but the small pores cause a steric barrier. The hydrophobic, mesoporous Fe-Co/ZSM-5Hierarchy catalyst was designed using the dealumination method with steam treatment to overcome the steric barrier and biphasic hindrances which are problems in this ODS process. The Fe-Co/ZSM-5Hierarchy catalyst is effective for the ODS process at a temperature of 45 °C, 45 min, the amount of catalyst used is 0.2 g, oxidant at an O/S ratio of 2, and without mass transfer agents. The embedded Fe-Co ratio shows effective mass activity by providing a TOF number of 205 h-1 on the Fe-Co(5)/ZSM-5 Hierarchy and 157 h-1 on the Fe-Co(15)/ZSM-5 Hierarchy catalyst.
Ekstraksi Oleoresin Dari Jahe Emprit (Zingiber Officinale var. Amarum) Dengan Metode Sokletasi Naidir, Ferra; Retno Wulandari; Pandit Hernowo; Andi Nuraliyah; Agung Siswahyu; Tulus Sukreni; Lisa Adhani
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Indonesia produces many useful spice plants, included ginger (zingiber officinale). Ginger is extracted to produce oleoresin, active components, such as gingerol, shogaol, and zingiberene, providing a distinctive aroma and taste usefully for the food, pharmaceutical, and cosmetic industries. The study obtain the best value on the variable size of ginger powder and the duration of soaking in solvent (96% ethanol) on oleoresin yield, using the soxhlet extraction method. The ratio of ginger powder and ethanol is 1: 10 (w / v) with ginger powder sizes of 20, 40, 60 mesh and soaking times of 0, 3, 9 hours, operated at a temperature of 70 ° C for 90 minutes. The process ends with simple distillation at a temperature between 66 - 69 oC for 90 minutes to purify the ginger oleoresin from the solvent. The highest yield of 88%, weighed 19.262 grams, was obtained from 60 mesh (0.250 mm) ginger powder with a soaking time of 9 hours. The average oleoresin SG value is 0.88-0.98 gr/mL with a refractive index of 1.03-1.07. From the chromatogram of the GC-MS analysis results, it was known that the highest active component was zingiberene at 26.43% which was obtained at 20.48 minutes.
Co-Authors Afifah, Muanda Agung Siswahyu Aliyah, Andi Nur Amaliah Annisa Andi Nuraliyah Andi Nuraliyah Anna Muawanah Bambang Heru Susanto, Bambang Heru Dovina Navanti Dwiatmoko, Adid Adep Edra Aditya Fhilipia Ardine Elvi Kustiyah Elvi Kustiyah, Elvi Everlita Sabrina Fitrianny, Eka Fricilia, Dea Kirana Hernowo, Pandit Ilham Santoso Isalmi Aziz Istiqomah, Wilujeng Hani Kartika, Wahyu Khairunnisa Fadhilla Ramdhania Khalida, Rakhmi Kusumawati, Amora Laras Andria Wardani Mayadi Mohamad Prastya Mohammad Nasikin Muhammad Farhan Mursitaningrum, Audy Putri Naidir, Ferra Nanda Saridewi, Nanda Rafika Sari Ramdhania, Khairunnisa Fadhilla Ratna Sari Retno Wulandari Safitri, Rizki Tri Santoso, Ilham Siti Nurbayti SITI SETIAWATI Solihatun Solihatun Tulus Sukreni Wahyu Kartika Widodo, Hernowo Yesan, Cantikha Fortuna Yulyani Nur Azizah