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All Journal Alchemy : Journal of Chemistry Jurnal Transportasi KOVALEN: Jurnal Riset Kimia Indonesia Chimica Acta Al-Kimia Walisongo Journal of Chemistry Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Dimasejati: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara International Journal Of Science, Technology & Management (IJSTM) Journal Of Human And Education (JAHE) Jurnal Pengabdian dan Pengembangan Masyarakat Indonesia Edelweiss : Journal of Innovation in Educational Research
Alif, Alfiah
Departement Of Chemistry, Faculty Science And Technology, Sembilanbelas November Kolaka University, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Journal : Al-Kimia

 1 
Seleksi Sel Bakteri Dari Minyak Bumi Sebagai Molekul Pengenal Dalam Biosensor Benzena Alfiah Alif; Dyah Iswantini; Henny Purwaningsih; Novik Nurhidayat; Amalyah Febryanti
Al-Kimia Vol 9 No 2 (2021): DESEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v9i2.24378

Abstract

Benzene is one of the harmful compounds which can affect both healthcare and environmental quality. Conventionally the effort of detecting this compound still requires several sample pre-treatments, contributing to a long analysis time and sophisticated instrumentation. Therefore, this study was aimed to determine the potency of bacteria as the bioreceptor for detecting benzene electrochemically. The bacteria isolate was immobilized on the working electrode surface. Four bacteria isolates from the petroleum sample were evaluated. The results showed that isolate II produced high oxidation and reduction peak currents as much as 150 µA and -490 µA respectively. The selected bacteria showed characteristics to Pseudomonas sp. physiologically. Since the bacteria can degrade benzene, thus hypothetically it can produce benzene dioxygenase. Through the catechol formation, 3 mM benzene produced 108.7 µA after 11.4 s from the starting scan. This result suggested that the excreted enzyme from the selected bacteria could react with benzene enzymatically.
Studi Teoritis Derivat 4,5-Difenil Imidazol Sebagai Inhibitor Korosi Besi dengan Teori Fungsi Kerapatan (DFT) Baari, Muhamad Jalil; Alif, Alfiah; Kurniawan, Muhammad Akbar S; Finarisnawati, Finarisnawati
Al-Kimia Vol 12 No 1 (2024): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v12i1.43475

Abstract

Corrosion is a severe problem in the petroleum industry. The use of corrosion inhibitors is an effort to reduce the corrosion rate on metal materials. This study used the computational chemistry approach to investigate the corrosion inhibition performances of 4,5-diphenyl imidazole and its derivatives with additional substituents, for instance, electron acceptors and electron donors. Geometry optimizations and calculations of molecular frontier orbital energies were conducted using density functional theory (DFT) in the aqueous phase. These frontier orbital energy values were used to determine other reactivity and stability parameters, such as band gap energy, electron affinity, ionization potential, chemical hardness, chemical softness, number of electron transfers, chemical potential, nucleophilicity, electrophilicity, electronegativity, back donation energy, and interaction energy. Electrostatic potential, Mulliken atomic charge, and theoretical inhibition efficiency of 4,5-diphenyl imidazole derivatives were also determined. Generally, the presence of electron donor substituents theoretically increases corrosion inhibitors. The 4,5-diphenyl imidazole with –NH2 substituent is a better derivative than others based on several reactivity and stability parameters due to adding adsorption centers. Therefore, it can increase the performance of 4,5-diphenyl imidazole as a corrosion inhibitor. The adsorption behaviors of 4,5-diphenyl imidazole and its derivatives on Fe(100) surfaces were investigated using molecular dynamics simulation. The binding energies of three types of inhibitors on the Fe surface of studied inhibitors followed the order: D–NH2 > 4,5-diphenyl imidazole (D) > D–NO2. This ranking obtained is consistent with the theoretical inhibition efficiency.
Co-Authors Aferta, Lusi Agusriyadin, Agusriyadin Akrajas Ali Umar Alfonds Andrew Maramis Ali Aulia Ghozali Amalyah Febryanti Amalyah Febryanti Amalyah Febryanti Amalyah Febryanti Anatje Lihiang Andas, Netty Huzniati Apriliya, Ella Arif Prasetya Benu, Marlon Jusak Rinaldy Carla Wulandari Sabandar Dian Permana Djunuda, Rahmawati Dyah Iswantini Faradisa Anindita Fazira, Yuli Febryanti, Amalyah Finarisnawati, Finarisnawati Fitria Mukti, Elisa Haerul Purnama Hairia, Warda Harianti Harianti Henny Purwaningsih Ibrahim, Akhmad Fadli Inda, Inda Indriani, Windi Kurniawan, Muhammad Akbar S Kurniawan, Muhammad Akbar S. La Na’ani Maulidiyah Maulidiyah Mbuli, Firnayanti Megawati , Megawati Megawati - Megawati, Megawati mubarak, azhar aras Muhamad Jalil Baari Na'ani, L.A. Na’ani, La Novik Nurhidayat Novik Nurhidayat Nurmira, Nurmira Poalahi, Sahrul Pomalingo, Moh Fikri Rahmawati Djunuda Riska Damayanti, Riska Risnawati, Fina Salim Salim Samaluddin Samaluddin, Samaluddin Sarimuddin, Sarimuddin Siswara, I.M Sitti Chadijah Sri Mulijani Tri Marniati Waangkaali Yuvita Satriani Djuli