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All Journal Majalah Ilmiah Pengkajian Industri Jurnal Ilmiah Teknik Kimia Jurnal Teknik Terapan (J-TETA)
Valentino, Novio
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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APPLICATION OF TEMPERATURE CONTROL SYSTEMS AT THE CATALYST ACTIVATION STEP IN THE METHANOL TESTPLANT Adiprabowo, Arya Bhaskara; Pertiwi, Astri; Rahmawati, Nurdiah; Saputro, Frendy Rian; Valentino, Novio; Anindita, Hana Nabila; Septriana, Desy
Majalah Ilmiah Pengkajian Industri Vol. 15 No. 1 (2021): Majalah Ilmiah Pengkajian Industri
Publisher : Deputi TIRBR-BPPT

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Abstract

Catalyst activation is an important step in methanol synthesis process, achieved by the reduction of CuO precursor producing Cu0 active sites.  Testplant’s temperature operation shall be maintainted at 220°C in order to maximize the CuO reduction process in the catalyst activation step. A temperature control system shall be applied in methanol testplant to maintain the temperature during reduction process, due to sensitivity of reduction process to temperature variation and possibility of disturbance such as change in gas flow rate which could affects the operating temperature. Temperature control systems are tested by using step response at the desired setpoint, which is 220°C at pre-heater and reactor and 60°C at sampling line. The tests are conducted by changing the setpoint value at temperature controller and previously stable flow gas in the system (disturbance rejection). The temperature control system proved to be able to response well during the test. In the end, methanol is produced from syngas, indicating catalyst activation success. Keywords: Catalyst Activation; Methanol Testplant; Temperature Controller
Strategi Optimasi Media Cair dalam Perbanyakan Kultur Kapang Dekomposer Tandan Kosong Kelapa Sawit untuk Efisiensi Produksi Biogas Ali, Badrut Tamam Ibnu; Pati, Senda Semuel; Baruji, Teguh; Yanti, Fusia Mirda; Heriyanti, Septina Is; Machiya, Intan; Santoso, Eko; Priambodo, Trisaksono Bagus; Budiyanto, Budiyanto; Purnamastuti, Fithri Nur; Nilasari, Nilasari; Primeia, Sandia; Valentino, Novio
Jurnal Teknik Terapan Vol. 3 No. 2 (2024): Oktober
Publisher : P3M Politeknik Negeri Jember

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Tandan Kosong Kelapa Sawit (TKKS) merupakan limbah padat yang memiliki massa 21% dari total massa minyak sawit. TKKS umumnya hanya menjadi limbah atau selanjutnya digunakan sebagai pupuk organik di perkebunan kelapa sawit. produksi Dalam pengelolaan limbah organik seperti tandan kosong kelapa sawit, penggunaan kapang dekomposer menjadi semakin penting untuk mempercepat proses dekomposisi bahan organik. Dalam konteks ini, media teknis cair dapat menjadi solusi efektif untuk perbanyakan kapang dekomposer. Salah satu formulasi yang populer melibatkan penggunaan molase sebagai sumber Karbon dan Urea sebagai sumber Nitrogen, dengan penyesuaian osmoregulator menggunakan larutan garam NaCl 0,85%. Perlakuan awal TKKS dengan pendekatan proses biologi melalui dekomposisi tandan kosong kelapa sawit menggunakan isolat kapang lokal untuk menghasilkan substrat yang memiliki nilai COD tinggi. Tujuan penelitian ini adalah melakukan optimasi media cair perbanyakan kultur kapang dekomposer tandan kosong kelapa sawit untuk produksi biogas. Media cair yang digunakan berupa molase, urea dan NaCl 0.85 %. Pada penelitian ini, didapatkan substrat dengan nilai kandungan COD tertinggi sebesar 27.095 ppm dengan perbandingan media cair molase sebesar 7.5 %, urea 3000 ppm, dan garam teknis 0.85 %.
KOH Activated-Biochar from Oil Palm Solid Wastes Via Pyrolysis for Energy Storage Application Murti, Galuh Wirama; Rahmawati, Nurdiah; Valentino, Novio; Hikmat, Hikmat; Firmandoko, Bagus Alif; Dwiratna, Bralin; Bangun, Herson; Prasetyo, Joni
Jurnal Ilmiah Teknik Kimia Vol. 8 No. 1 (2024): JURNAL ILMIAH TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia, Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/jitk.v8i1.37710

Abstract

As the leading exporter of the oil palm in the world, Indonesia has an environmental issue regarding to the increasing oil palm solid wastes. In order to utilize this lignocellulosic wastes into an inexpensive supply of carbon-based material, biochar from empty fruit bunch (EFB), palm kernel shell (PKS), oil palm frond (OPF), and oil palm trunk (OPT) was produced via slow pyrolysis with KOH as activation agent. The slow pyrolysis was conducted with a temperature of 600oC, a heating rate of 10oC/min, held for 30 min, and atmospheric pressure. This study examines the physico-chemical characterization of all oil palm solid wastes and biochars by using ultimate analysis, water and ash content, Fourier Transform Infrared (FTIR) spectrometer, surface area using Brunauer-Emmet-Teller (BET), and surface morphology using Scanning Electron Microscope (SEM). The higher biochar yields were obtained by PKS and EFB with 30% and 35.79% which have a higher ash content, lignin content, and residual solid char. OPT and PKS biochars exhibit high surface area (467.49 m2/g and 386.85 m2/g) with a high carbon content of 75.64% and 70.22%, respectively. Electrochemical performances of OPT and PKS biochar were also evaluated and the cyclic voltammogram showed the response of current to potential. The results of OPT and PKS biochars had shown a promising raw materials as bio-carbon black which have a well-developed structure of morphology, high surface area, and high carbon content.  
Co-Authors Adiprabowo, Arya Bhaskara Ali, Badrut Tamam Ibnu Bangun, Herson baruji, teguh Budiyanto Budiyanto Dwiratna, Bralin Eko Santoso Firmandoko, Bagus Alif Hana Nabila Anindita, Hana Nabila Heriyanti, Septina Is Hikmat Hikmat, Hikmat Joni Prasetyo, Joni Machiya, Intan Murti, Galuh Wirama Nilasari, Nilasari Pati, Senda Semuel Pertiwi, Astri Priambodo, Trisaksono Bagus Primeia, Sandia Purnamastuti, Fithri Nur Rahmawati, Nurdiah Saputro, Frendy Rian Septriana, Desy Yanti, Fusia Mirda