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All Journal Reaktor JURNAL TEKNOLOGI LINGKUNGAN Jurnal Bahan Alam Terbarukan Waste Technology Bulletin of Chemical Reaction Engineering & Catalysis Journal of Engineering and Technological Sciences World Chemical Engineering Journal JURNAL INTEGRASI PROSES Teknika: Jurnal Sains dan Teknologi EduChemia: Jurnal Kimia dan Pendidikan Indonesian Journal of Science and Technology Jurnal Tirtayasa Ekonomika (Tirtayasa Economica Journal) Journal of Energy, Mechanical, Material and Manufacturing Engineering Angkasa: Jurnal Ilmiah Bidang Teknologi Jurnal Kartika Kimia International Journal of Research and Applied Technology (INJURATECH) Automotive Experiences Journal of Mechanical and Electrical Technology Fraction: Jurnal Teori dan Terapan Matematika Urecol Journal. Part D: Applied Sciences
Teguh Kurniawan
Universitas Sultan Ageng Tirtayasa
Aerospace Engineering 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 Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Kinetics Studies of Ciprofloxacin Waste Degradation Using TiO2 Nanotubes from The Anodization Process Kustiningsih, Indar; Putri, Berliana Tristati; Putri, Martina Reza; Kurniawan, Teguh; Sari, Denni Kartika; Adiwibowo, Muhammad Triyogo; Slamet, Slamet
EduChemia: Jurnal Kimia dan Pendidikan Vol 8, No 2 (2023)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v8i2.23963

Abstract

ecosystems and alter the genetic code of normal bacteria, resulting in bacterial resistance. Ciprofloxacin (CIP) is one of the antibiotics that can be an environmental challenge if it accumulates in certain quantities. The process that can be used to eliminate CIP waste from water is the photocatalysis process. This work aimed to study the kinetics of CIP degradation using TiO2 nanotubes (TNTAs) from the anodization process. TNTAs with varying water contents and voltages are produced during the anodization process. TNTAs are synthesized by anodizing organic electrolyte solutions with different voltages (40, 50, and 60 V) and water contents (20, 25, and 30%). The TNTAs are then employed in CIP waste degradation with variations in the initial pH of the waste (pH 5-8) for 3 hours. SEM and XRD were used in this investigation to characterize the catalyst. SEM results illustrate the effect of voltage and water content on the anodization process with increasing contact surface area. XRD data demonstrate the presence of anatase phase crystals produced in TNTAs. The results showed that the kinetics of the CIP degradation reaction followed order one, with the best kinetic constant attained at 8.24 hours-1.
Correlation Analysis of Radical Polymerization Reactor Operating Conditions to Industrial Scale Swelling Capacity of Superabsorbent Ilham, Willy Aulia; Kurniawan, Teguh; Saepurahman, Saepurahman; Aisyah, Ratna Sari siti
EduChemia: Jurnal Kimia dan Pendidikan Vol 8, No 2 (2023)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v8i2.18853

Abstract

Superabsorbent polymer (SAP) is a polymer that has one function as an absorbent material in baby diapers, whose quality is determined by the number of swelling capacity (SC). Many previous studies regarding the effect of synthesis parameters on the number of SC were limited to the laboratory scale, where the polymerization conditions, the number of variables, and SC data obtained were very limited, in contrast to the industrial scale. The radical polymerization stage, with its accompanying operating variables such as reaction temperature, monomer concentration, retention time, crosslinker concentration, the addition of nitrogen gas, and initiator concentration, affects the value of SC in industrial-scale production. This study aims to analyse the correlation between the reactor operating conditions and the number of SAP SC obtained. Correlation data analysis was done using Microsoft Excel with Data Analysis Toolpak and Python by utilizing production data with a total of 1,562 entries, where the correlation between each variable was calculated using Pearson’s correlation coefficient. The analysis determined that the variables that had the strongest correlation with the SC were retention time and reaction temperature, with correlation coefficient values of 0.31 and -0.26. The weakest correlation was obtained from the addition of nitrogen gas and an initiator with a value of -0.07 and -0.02. Positive values indicate a relationship that is directly proportional, while negative values indicate an inverse relationship. Based on the correlation analyses and trends, the ideal polymerization conditions have been identified.
ZEOLITE FOR AGRICULTURE INTENSIFICATION AND CATALYST IN AGROINDUSTRY Kurniawan, Teguh; Nuryoto, Nuryoto; Firdaus, Mochamad Adha
World Chemical Engineering Journal VOLUME 3 NO. 1 JUNE 2019
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v3i1.5507

Abstract

The role of renewable products is becoming important because the fossil resources in which most of our chemicals derived is vanishing. Agriculture as the renewable sources is needed to increase the production which is not only required to meet the food demands but also to replace chemicals that derived from fossil sources. Zeolite has a huge potential for agriculture intensification and conversion of agriculture products and by-products into chemicals. Indonesia has two kind deposit of natural zeolites, which are clinoptilolite and mordenite lies aligned volcanic mountain across Sumatra, Java, Nusa Tenggara and Sulawesi Islands. Zeolite has large surface area consisted of microporous and mesoporous structures. It could be utilized as an ion exchange agent, adsorbent and catalyst for applications in agriculture and agroindustry. Sustainable development of agricultural products could be also assisted by zeolite as slow-release fertilizer and controlling pests. Moreover, this review discusses about the integration of natural zeolite with chemical based wastes from livestock with nitrogen demand for cultivation is explained as a part of the idea of one-system-integrated farm and livestock. Storage and processing of agricultural products could be more efficient with the utilization of zeolite in drying, storage, processing and product preservation unit operations. Sucrose crystallization, catalytic reaction inulin to fructose, pinene isomerization and glycerol biodiesel by-product conversion is discussed in this review. As in general, zeolite porosity, topology, silicon to aluminium ratio, and acidity properties become an important factor on catalytic reactions to convert agricultural products into beneficial chemical substances
Kinetic Study of Ammonium Desorption using Natural Zeolites from Cikalong Abdusattar, Thareqa; Hadi, Abdul; Nuryoto, Nuryoto; Kurniawan, Teguh
World Chemical Engineering Journal VOLUME 5 NO. 1 JUNE 2021
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v5i1.12103

Abstract

Household liquid waste which contains ammonium is one of the major contributors to the wastewater effluent. The aim of investigation is to characterize and determine the adsorption capacity of natural zeolites from Cikalong for ammonium removal.  The effect of cations type, K+, Mg2+ and Ca2+, on ammonium desorptions was studied. Kinetic desorption study was also performed and fitted with various kinetic models. According to X-ray diffraction (XRD) pattern, the Cikalong natural zeolites were mordenite and clinoptilolite dominant type.  The morphology of the mordenite phase was appeared as needles shape. The ratio of Si to Al was 6.86 according to X-ray fluorescence (XRF). The surface area was 187 m2/g which was determined by Brunauer–Emmett–Teller (BET) model. Desorption using K+ solution showed the shortest time and the highest rate for ammonium desorption. The calculation using nonlinear method was carried out to optimize the desorption kinetic parameters. The pseudo 1st order desorption kinetics model showed the smallest error with sum of squared error (SSE) 0.00209.
Reverse Flow Reactor for Catalytic Oxidation of Lean Methane Kurniawan, Teguh; Budhi, Yogi Wibisono; Bindar, Yazid
World Chemical Engineering Journal VOLUME 2 NO. 1 JUNE 2018
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v2i1.3493

Abstract

Methane as a potential green house gases contributor which gives 21 GWP has to be mitigated to diminish the global warming effect. High concentration methane can be easily converted into CO2 by mean oxidation. However lean methane can only be oxidized in catalytic reaction system as the catalyst lowers the reaction temperature up to 400 oC. Nevertheless, this is still high temperature to achieve by low concentration and low temperature feed. It still needs preheating the feed until its reaction condition reached which can be supplied outside or within the system called auto thermal. One of promising auto thermal reactor is reverse flow reactor which is the reactor that its feed flow periodically switches to make the heat trapped inside the reactor. In this work we have designed reverse flow reactor by one-dimensional model, pseudohomogeneous for mass and heterogeneous for energy to burn lean methane from a station compressor. The critical parameter of switching time on the system of periodical reversal is also presented
Co-Authors Abdul Hadi Abdusattar, Thareqa ACHMAD RIFAI Adian Yoga Pradana Adiwibowo, Muhammad Triyogo Aisyah, Ratna Sari siti Alia Badra Pitaloka Andre Wibowo Anggara Diaz Ramadhan Anita Diyanah Anton Irawan Asep Bayu Dani Nandiyanto Bindar, Yazid Damar Abi Ramadani Darisman Darisman Dhimas Satria Dina Pujianti Endang Suhendi, Endang Erny Listijorini Fajar Gumelar Fauzan, Eka R. Fiandini, Meli Firdaus, Mochamad Adha Frans Romario Panjaitan Ghani Naufal Hafid Alwan Hafid Alwan Hairus Abdullah Handry Shantos Hanif Nur Purnamasari Hesti Prihastuti Ilham, Willy Aulia Imron Rosyadi Indar Kustingsih Indar Kustiningsih Jayanudin Jayanudin Juniafit Bima Saputra Kustiningsih, Indar Makiyi, Muhammad Marta Pramudita Mentari Putri Aprilia Muchamad Ismettulloh Muhammad Roil Bilad Muhammad Saifullah Abu Bakar Murni, Dewi Naibaho, Pipiet P.U. Nik Abdul Hadi Md Nordin Nindya Carolina C.S Nisa Aina Fauziah Novan Prihasa Nurwijayanti Nuryoto Nuryoto, Nuryoto Oki Muraza Putri, Berliana Tristati Putri, Martina Reza Raffli Nurmuhammad Ragadhita, Risti Rahmayetti Rahmayetti Rahmayetty Rahmayetty Ranggaweny Al-Ghani Ranggaweny Al-Ghani Ratna Sari Siti Aisyah Rina Lusiani Rosid Rosid Saepurahman Saepurahman Saepurahman Saepurahman Saepurahman, Saepurahman Saiful Bahri Salman, Nidya Jullanar Sari, Denni Kartika Selfira Arum Andadari Septian Arief Nur Rahman Sjaifuddin Sjaifuddin Slamet, Slamet Sri Agustina Tia Lestari Vicky Zayan Giffari Wahyudi Eko Pratomo Willy Aulia Ilham Yazid Bindar Yazid Bindar Yazid Bindar Yogi Wibisono Budhi Yuhelsa Putra