Article Per Year (5 Year)
p-Index From 2020 - 2025
1.431
P-Index
This Author published in this journals
All Journal Seminar Nasional Teknik Kimia Kejuangan KOVALEN: Jurnal Riset Kimia JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya FLUIDA Fullerene Journal of Chemistry Kumawula: Jurnal Pengabdian Kepada Masyarakat International Journal of Applied Technology Research Industrial Research Workshop and National Seminar
Yunus Tonapa Sarungu
Jurusan Teknik Kimia Politeknik Negeri Bandung
Aerospace Engineering 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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search
Journal : KOVALEN: Jurnal Riset Kimia

 1 
Pemanfaatan Lumpur Minyak dengan Solar sebagai Energi Alternatif Bahan Bakar: Utilization of Oil Sludge with Diesel as Fuel Alternative Yunus Tonapa Sarungu; Rony Pasonang Sihombing
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 2 (2021): Edisi Agustus
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i2.15509

Abstract

Oil sludge resulting from crude oil processing in the petroleum industry could have a negative impact on the environment. Oil sludge could also be classified as hazardous waste and able to damage the environment and human health. Therefore, it was necessary to solve this issues. Oil sludge hydrocarbon utilizing to get higher value was one of solution offered by these research. In the utilization process, filtration method was used at first procedure and followed by diesel mixing at ratio 1:0.1, 1:0.2, 1:0.3, 1:0.4, and 1:0.5. The mixture was then analyzed for several parameters such as heating value, moisture content, ash content, and flashpoint. The results of heating values ranging from 5.966 calories/ gram to 7.210 calories/ gram, the flashpoint was from 38 ⁰C to 76 ⁰C, the water content was from 51.89% to 54.52%, the ash content was from 12.3% to 18.03%. The results showed that utilization of oil sludge could be used as liquid fuel alternative energy. Keywords: oil sludge, energy alternative, liquid fuel
Pengaruh Konsentrasi Inhibitor dari Eceng Gondok dalam Air Hujan dan Air Kran terhadap Laju Korosi: Effect of Water Hyacinth Inhibitor Concentration in Rain Water and Tap Water Media on Corrosion Rate Emma Hermawati; Yunus Tonapa Sarungu; Bambang Soeswanto; Rispiandi; Alfiana Adhitasari; Sudrajat Harris Abdulloh; Rony Pasonang Sihombing; Retno Indarti
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 2 (2022): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2022.v8.i2.15931

Abstract

Organic inhibitors in the corrosion process could be obtained from water hyacinth plant. This plant contained antioxidants such as saponins, which could bind to protective metals from corrosion. The objective of this study was to observe the corrosion rate degradation in rainwater and tap water with saponin content of water hyacinth extract with novelty of using methanol in the maceration process. The sample: methanol ratio used in the maceration process was 1 : 9 (w/v). Steel testing was carried out for 5 days in rainwater and tap water. Based on the test results, the saponin content in the water hyacinth extract could be proven by the stability of the foam produced. The experimental results showed a corrosion rate escalation in tap water samples from 47.7% to 94.5% and samples in rainwater from 11.3% to 52.9% at 75 ppm inhibitor concentration. Based on the research, water hyacinth extract using methanol solvent could be used as a corrosion inhibitor.
Laju Korosi Logam Baja Karbon Rendah di Larutan Garam pada Berbagai Konsentrasi Inhibitor Korosi dari Ekstrak Daun Pepaya: Low Carbon Steel Metal Corrosion Rate in Salt Solution at Various Concentrations of Corrosion Inhibitor from Papaya Leaf Extract Ninik Lintang Edi Wahyuni; Rony Pasonang Sihombing; Nurcahyo; Agustinus Ngatin; Yunus Tonapa Sarungu; Alfiana Adhitasari; Bambang Soeswanto; Emma Hermawati Muhari; retno indarti
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 2 (2023): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i2.16344

Abstract

Papaya leaf extract could be used as an organic corrosion inhibitor. Corrosion inhibitors were used as a method to reduce corrosion rate. The most corrosive environment was the marine environment. The purpose of this study was to determine the best concentration of papaya (Carica papaya) leaf extract inhibitor which could reduce the corrosion rate of low carbon steel in a 3.56% NaCl solution environment. The maceration process was carried out for 24 hours with 70% ethanol solvent with a solute:solvent ratio of 1:8 (w/v) at room temperature. Inhibitor extracts were analyzed qualitatively with the phytochemical method. The addition of FeCl3 was carried out on the inhibitor extract from papaya leaves. The color change occurred from blackish brown to greenish black which indicated the presence of tannin compounds in the papaya leaf extract. Corrosion testing was carried out with hot stream temperature setting at 45⁰C to 55⁰C and concentrations of inhibitor extracts at 300, 600, and 900 ppm. The test was conducted for 36 hours with a span of metal mass every 6 hours. Corrosion rate calculation is done by weight loss method. The results showed that papaya leaf extract inhibitors positive contained corrosion inhibitor and could reduce the corrosion rate in 3.56% NaCl solution. The corrosion rate without inhibitor is 1.023 mmpy. Corrosion rates with inhibitor concentrations of 300, 600, and 900 ppm were 0.755, 0.585, and 0.438 mmpy, respectively.
Co-Authors Alfiana Adhitasari Annisa Nurlatifah Bambang Soeswanto Bambang Soeswanto Cut Magesang Hariyadi, Tri Jayanti, Retno Dwi Marlina, Ari Muhari, Emma Hermawati Ngatin, Agustinus Nidaa’ Rihhadatul ‘Aisya Komara Ninik Lintang Edi Wahyuni Nurcahyo Putri Utami Dita Cahya Restu Adji Alif Asyari Retno Indarti Rispiandi Rispiandi Robby Sudarman Sihombing, Rony Pasonang Sudrajat Harris Abdulloh Suryadi, Joko Tri Reksa Saputra Unung Leoanggraini