Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

2.782

P-Index

This Author published in this journals

All Journal Reaktor TEKNIK Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan METANA Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Jurnal Teknologi Jurnal Dinamika Penelitian Industri JST ( Jurnal Sains Terapan ) Journal of Research and Technology Jukung (Jurnal Teknik Lingkungan) Jurnal Perikanan Universitas Gadjah Mada CHEESA: Chemical Engineering Research Articles Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Jurnal Teknologi Terapan Jurnal Riset Teknologi Industri Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Reswara: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Jurnal Riset Teknologi Pencegahan Pencemaran Industri Waspada : Jurnal Wawasan Pengembangan Pendidikan JURNAL REKAYASA KIMIA & LINGKUNGAN

Adhi Setiawan

Politeknik Perkapalan Negeri Surabaya

Author-ID : 376721

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

Published : 51 Documents Claim Missing Document

Claim Missing Document

Articles

Title

Corrosion Characteristics of Carbon Steel upon Exposure to Biodiesel Synthesized from Used Frying Oil Adhi Setiawan; Nora Amelia Novitrie; Agung Nugroho; W Widiyastuti
Reaktor Volume 17 No. 4 Desember 2017
Publisher : Dept. of Chemical Engineering, Diponegoro University

The use of biodiesel leads to corrosion of automotive material, which can potentially shorten engine lifetime. The study aims to investigate the effect of temperature and contact time on the corrosion characteristics of carbon steel upon exposure to biodiesel synthesized from used frying oil. The corrosion rate of carbon steel was analyzed based on weight loss measurement according to the standard of ASTM G31 as affected by temperature and contact time. The immersion temperatures used in this study were 30oC, 40oC, and 70o, respectively. The contact times studied were 30 days, 40 days, and 50 days respectively. The results show that the increase of temperature and contact time of biodiesel on carbon steel surface speeds up the corrosion rate. Maximum corrosion rate (0.083 mmy) was observed on the carbon steel contacted to biodiesel at 70oC for 50 days. The SEM results showed an irregular shape of the corroded carbon steel surface. XRD / FTIR analysis of carbon steel samples show the presence of peaks, detected as Fe2O3, FeO(OH) and Fe2O2CO3, as the corrosion products. Keywords: biodiesel; carbon steel; corrosion; FAME; used frying oil

KINETIKA REAKSI SINTHESIS BIOMATERIAL HIDROXYAPATITE DENGAN JENIS PREKURSOR NITRAT DAN ASETAT Adhi Setiawan; W Widiyastuti; Sugeng Winardi; Agung Nugroho
Reaktor Volume 15, No.2, OKTOBER 2014
Publisher : Dept. of Chemical Engineering, Diponegoro University

Hidroxyapatite (HAp) merupakan salah satu biomaterial yang banyak diaplikasikan dalam dunia medis untuk membuat implant jaringan tubuh terutama tulang dan gigi sehingga kemurnian produk HAp memegang peranan yang cukup penting. Agar diperoleh HAp dengan kemurnian tinggi, kinetika reaksi pembentukan HAp harus diketahui secara jelas. Metode yang digunakan untuk memperoleh kinetika reaksi HAp adalah dengan analisis TG-DTA yang dilakukan pada dua jenis prekursor HAp yaitu asetat dan nitrat. Metode TG-DTA tersebut dilakukan dengan memanaskan prekursor HAp dengan variasi laju pemanasan 10, 15, 17, dan 20 oC/menit. Hasil analisis TG-DTA menunjukkan bahwa reaksi dekomposisi prekursor asetat dan nitrat membentuk HAp masing-masing terjadi pada suhu 659 oC dan 560 oC. Hasil fitting parameter kinetika menunjukkan bahwa energi aktivasi pembentukan HAp pada prekursor asetat sebesar 161,56 kJ/mol dengan model kinetika Normal Grain Growth sedangkan pada prekursor nitrat sebesar 374 kJ/mol dengan model kinetika Johnson-Mehl-Avrami. Kata kunci: Biomaterial, hidroxypapatite, Dekomposisi, Energi Aktivasi ABSTRACT KINETIC STUDY OF THE BIOMATERIAS HIDOXYAPATITE SINTHESIS WITH PRECURSOR NITRATE AND ACETATE. Hidroxyapatite (HAp) is one of the biomaterials widely applied in the medical world to make implant tissues of the body, especially bones and teeth so that the purity of the HAp plays a fairly important. In order to obtain high purity HAp, reaction kinetics should be known clearly. TG-DTA is method used to obtain the reaction kinetics of HAp.TG-DTA analyzes were conducted on precursors acetate and nitrate. TG-DTA method is carried out by heating HAp precursor with variation heating rate 10, 15, 17, and 20° C/min respectively. The results of TG-DTA showed decomposition precursor acetate and nitrate formed HAp occurs on temperature 659° C and 560° C respectively. The results of the fitting kinetic showed activation energy of the HAp formation on acetate precursors about 161.56 kJ/mol with Normal Grain Growth kinetic model whereas the nitrate precursor about 374 kJ/mol with Johnson-Mehl-Avrami kinetic model.

SINTESIS BIOMATERIAL HYDROXYAPATITE DENGAN PROSES FLAME SPRAY PYROLYSIS DISERTAI PENAMBAHAN ADITIF ORGANIK Adhi Setiawan; W Widiyastuti; Sugeng Winardi; Agung Nugroho
Reaktor Volume 16 No.4 Desember 2016
Publisher : Dept. of Chemical Engineering, Diponegoro University

SYNTHESIS OF HYDROXYAPATITE BIOMATERIALS BY FLAME SPRAY PYROLYSIS PROCESS WITH ADDITION OF ORGANIC ADDITIVES. Hydroxyapatite is biomaterial which is widely used for biomedical aplication such as implant because biocompatible, bioactivity, and strong affinity to biopolymers. Therefore parameters of morphology and crystallinity becomes an important parameter to be controlled. The addition of the organic additive on HAp precursor with ethylene glycol, polyethylene glycol 400, and urea is the alternative to improve the size, morphology, and crystallinity of HAp particles. The equipment for flame spray pyrolysis process includes ultrasonic nebulizer, flame reactor, and eletrostatic precipitator. The amount of organic additives used in experiment is 30%, 50%, and 100% by mass of the precursor. The result of SEM and XRD showed HAp synthesized by the addition of additive material has a smaller size than without using the additive and crystallinity is better than no additive. In addition HAp synthesized by the addition of 30% PEG additive have smallest average particle size about 114 nm, crystalite size about 16,6 nm and spherical morphology with a low agglomeration. Keywords: Hidroxyapatite, organic additives, flame spray pyrolysis, morfology Abstrak Hydroxyapatite merupakan biomaterial yang seringkali diaplikasikan dalam biomedis sebagai bahan implant karena sifatnya yang biocompatible, bioactivity, dan memiliki afinitas yang kuat terhadap biopolimer. Oleh karena itu parameter morfologi serta kristalinitas partikel menjadi parameter penting untuk dikontrol. Penambahan aditif organik pada prekursor HAp dengan etilen glikol, polietilen glikol 400, serta urea merupakan alternativ agar memperbaiki ukuran, morfologi, serta meningkatkan kristalinitas partikel HAp. Peralatan utama flame spray pyrolysis meliputi ultrasonic nebulizer, reaktor flame, dan eletrostatik precipitator. Jumlah aditif organik yang digunakan pada eksperimen antara lain 30%, 50%, dan 100% massa prekursor. Hasil SEM dan XRD menunjukkan bahwa HAp yang disintesis dengan penambahan bahan aditif memiliki ukuran lebih kecil daripada tanpa menggunakan aditif dan tingkat kristalinitasnya lebih baik dibandingkan tanpa aditif. Selain itu HAp yang disintesis dengan penambahan aditif PEG sebanyak 30% memiliki ukuran rata-rata partikel yang terkecil yaitu sebesar 114 nm dengan ukuran kristal mencapai 16,6 nm serta memiliki morfologi bulat dengan tingkat aglomerasi yang rendah.

Co-Authors Abda Abda Achmad Fatoni Agung Nugroho Agung Nugroho Agung Nugroho Agung Nugroho Agung Nugroho Ahmad Erlan Afiuddin Aisyah Nur Rahmadania Alfinura Fajrin Alfinura Fajrin Amilia Kristina Dewi Ananda Augista Firtsanti Anggara Trisna Nugraha Anggraini, Febby Dwi Melanny Arianingtyas, Nadya Ayu Arita Rochma Nilasari Azzahro, Annisa Basyiruddin, Fariz Bawafi, Muhammad Iqbal Ali Cahyono, Luqman Catur Rini Widyastuti, Catur Rini Chelvin Sugiarto Citra Eripramita Yunus Denny Dermawan Denny Dermawan Deris Eko Saputro Devina Puspitasari Devina Puspitasari Dewi, Tanti Utami Utami Dhani, Mey Rohma Dian Nur Hanifah Dika R. Widiana Dwi Rasy Mujiyanti Dzulfikar, Muhammad Hanif Eka Mayangsari, Novi Endang Pudji Purwanti Fajrin, Alfinura Falenia Firdatul Jannah Fariha, Chandra Nur Firnandi, Rahmad Fitri Hardiyanti Fitri Hardiyanti Gunawan, Karina Larasati Hanastasia, Rizka Lutfita Hanifah, Dian Nur Hanifah, Dian Nur Hanoni Hanun, Jihan Nabillah Inayatul Wulandari Indri Santiasih Lintang Indra Liuqil Mahfudz Luqman Cahyono M. Ari M. Ari M. Miftahul Munir M. Miftahul Munir Maulidya, Risya Dwi Mirna Apriani Mochamad Luqman Ashari Mochamad Yusuf Santoso Mochammad Choirul Rizal Muhamad Ari Muhammad Asrul Nizam Mukhlis Mukhlis Munir, M. Miftahul Nilasari, Arita Rochma Nora Amelia Novitrie Novi Eka Mayangsari Novitrie, Nora Amelia Nugroho, Agung Nurhidayati, Dyah Isna Pawitra, Tiane Prianto, Haekal Irfan Titan Prima Astuti Handayani Priyambodo N. A. Nugroho Puguh Pribadhi Purwanti, Endang Pudji Puspitasari, Devina Putri, Desita Ramadona Syah Qurrotul Aini Rahmawati, Devi Ayu Rizki Medy Prasetyo Rizki Noviana Damayanti Saputro, Deris Eko Satriavi, Aulia Diva Setiani, Vivin Siti Muthi’ah Tanti Utami Dewi Tarikh Azis Ramadani Tri Bagus Setiawan Utomo, Agung Prasetyo Vira Fadilah Qurani Vivin Setiani Vivin Setiani Widiyastuti Widiyastuti Widiyastuti Widiyastuti Widiyastuti Widiyastuti Winardi, Sugeng Wiwik Dwi Pratiwi Wiwik Dwi Pratiwi, Wiwik Dwi

Title Search

Found 3 Documents Search Journal : Reaktor

Abstract

Abstract

Abstract

Title

Found 3 Documents
Search
Journal : Reaktor