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All Journal World Chemical Engineering Journal Teknika: Jurnal Sains dan Teknologi
Rochmat, Agus
Universitas Sultan Ageng Tirtayasa
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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Effect of Bio-Coating Material Concentration of Rice Husk Extract (Oryza Sativa) and Damar Resin (Agathis Dammara) on Reducing Corrosion Rates in H2SO4 Solutions Pramudita, Marta; Zayadi, Adi; Pitaloka, Evi Diah; Rochmat, Agus; Pitaloka, Alia Badra; Agustina, Sri
World Chemical Engineering Journal VOLUME 8 NO. 2 DECEMBER 2024
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v8i2.30154

Abstract

Corrosion is one of the main problems in industry, especially in cooling systems, refinery units, pipelines, chemicals, oil and gas production units, boilers and water processing, paints, pigments, lubricants, and others. The use of inhibitors has been proven to reduce the rate of corrosion. Still, it is limited by long-term stability, so it is necessary to provide other protection for mild steel, namely coating the metal with a coating material. Coating is the process of covering base material to protect the material from corrosion and provide protection to the material. The silica contained in rice husk extract and damar resin has the potential to be good bio-coating. This research aims to determine the effect of damar resin concentration on the corrosion rate and corrosion rate efficiency. The method used in this research uses several methods, one of which is the weight loss method. The resin and silica sol obtained from ashing rice husks are mixed to form a homogeneous product. Metal samples that have been coated with bio-coating material are soaked in 1 M sulfuric acid solution, with varying resin concentrations of 25, 50, and 75 gr with immersion times of 1, 2, and 3 hours, and at temperatures of 30, 40, 60, and 80 °C, which was then tested for the capability of the bio-coating material. This research obtained the highest corrosion rate value of 0.8860 mmpy using a temperature of 80˚C and a immersion time of 3 hours, with a corrosion efficiency value of 62.96%. Meanwhile, the lowest corrosion rate was 0.2143 mmpy at a temperature of 30˚C and a immersion time of 1 hour, with a corrosion efficiency value of 85.71%.
Eco-Friendly Transformation and Energy Efficiency in Methanol-to-Olefins (MTO) Processes: Innovations Toward Sustainable Olefin Production Heriyanto, Heri; Rochmat, Agus; Suhendi, Endang; Pujiastuti, Hendrini; Wardalia, Wardalia; Kanani, Nufus
World Chemical Engineering Journal VOLUME 8 NO. 2 DECEMBER 2024
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v8i2.30231

Abstract

Uncertainty regarding global crude oil prices has raised concerns for industry players, including the intermediate chemical industry such as olefins. The possibility of oil prices rising unpredictably makes the production of olefins from naphtha less attractive. On the other hand, abundant reserves of coal and natural gas are being considered as the foundation for developing the olefin industry based on gasification processes. The process routes include the formation of synthetic gas (SynGas) consisting of Hydrogen and Carbon Monoxide (H2 and CO), Methanol production from SynGas, and Olefin production from Methanol (MTO). This review aims to provide an overview of MTO and future developments related to the diversification of processes and technologies for the commercial production of olefins. Current research development on the Methanol-to-Olefins (MTO) process has narrowed down to three main areas, including: (1) Catalyst modification to increase reaction yield (particularly C2 and C3 products), (2) Determination of detailed reaction mechanisms in olefin formation, and (3) Catalyst deactivation processes in MTO.
Molecular docking of seagrass extracts: investigating the interaction with lipoate protein ligase from enhalus acoroides Rochmat, Agus; Kamil, Kintan NR; Syawalia, Nabila R; Yulvianti, Meri; Bukhari, Ahmad; Hariri, Ahmad; Suaedah, Suaedah; Ganiadi, Mochamad
Jurnal Teknika Vol 20, No 2 (2024): Available Online in November 2024
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/tjst.v20i2.30833

Abstract

Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis and has become a serious global health issue due to increasing antibiotic resistance. Genetic variations in this bacterium enable the emergence of drug-resistant strains, necessitating the search for more effective alternative therapies. This study evaluates the potential of Enhalus acoroides metabolites as inhibitors of the Lipoate Protein Ligase (LipB) enzyme, which plays a crucial role in the fatty acid synthesis of M. tuberculosis. The research was conducted through in silico analysis, including Lipinski's Rule of Five screening, ADMET pharmacokinetic modeling, compound identification using GC-MS, and molecular docking using PyRx, with interaction analysis performed via Biovia Studio. Three tested compounds—Lanosterol, N,N'-1,4-phenylenebis Benzamide, and Astragalin—exhibited significant binding affinity to the 1W66 receptor, with binding energies of -7.5 kcal/mol, -6.8 kcal/mol, and -7.8 kcal/mol, respectively. These values surpass those of the positive controls, Rifampicin (-7.0 kcal/mol) and Streptomycin (-6.5 kcal/mol), indicating the potential of these compounds as new anti-TB drug candidates. This study confirms that Enhalus acoroides metabolites have therapeutic potential in TB treatment, particularly in addressing antibiotic resistance. Further in vitro and in vivo studies are required to validate their pharmacological efficacy.TRANSLATE with x EnglishArabicHebrewPolishBulgarianHindiPortugueseCatalanHmong DawRomanianChinese SimplifiedHungarianRussianChinese TraditionalIndonesianSlovakCzechItalianSlovenianDanishJapaneseSpanishDutchKlingonSwedishEnglishKoreanThaiEstonianLatvianTurkishFinnishLithuanianUkrainianFrenchMalayUrduGermanMalteseVietnameseGreekNorwegianWelshHaitian CreolePersian //  TRANSLATE with COPY THE URL BELOW Back EMBED THE SNIPPET BELOW IN YOUR SITE Enable collaborative features and customize widget: Bing Webmaster PortalBack//
Co-Authors Bukhari, Ahmad Ganiadi, Mochamad Hariri, Ahmad Heriyanto, Heri Kamil, Kintan NR Kanani, Nufus Pitaloka, Alia Badra Pitaloka, Evi Diah Pramudita, Marta Pujiastuti, Hendrini Sri Agustina Suaedah, Suaedah Suhendi, Endang Syawalia, Nabila R Wardalia, Wardalia Yulvianti, Meri Zayadi, Adi