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Susmanto, Prahady
Universitas Sriwijaya
Aerospace Engineering Agriculture, Biological Sciences & Forestry 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 Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Transportation Other

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Evaluasi Low Pressure Decomposer (LPD) di Unit Purifikasi Urea Plant Terhadap Q Loss, Middle Temperature dan Feed Temperature Susmanto, Prahady; Fatullah, Muhammad Ilham; Jimmy Aldian Maulana; Mareta Dwi Saharany; Riski Yona
Journal of Chemical Process Engineering Vol. 9 No. 1 (2024): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i1.726

Abstract

Proses pembuatan pupuk urea membutuhkan bahan baku dasar NH3 dan CO2 dengan melewati proses sintesa, purifikasi, recovery, dan kristalisasi. Alat utama yang terdapat pada proses purifikasi terdiri dari high pressure decomposer, low pressure decomposer, dan gas separator. Low pressure cecomposer (LPD) merupakan serangkaian peralatan yang berfungsi untuk memisahkan urea dari komponen berupa ammonium carbamate, excess ammonia, air dan biuret tersisa. Penelitian ini bertujuan untuk mengevaluasi kinerja alat low pressure decomposer berdasarkan efisiensi panas. Adapun data yang digunakan yaitu data aktual LPD dari urea plant sebanyak 4 data. Metode penelitian menggunakan metode analisis neraca massa dan neraca panas yang dilanjutkan dengan perhitungan nilai efisiensi LPD terhadap pengaruh Qloss, middle temperature, dan feed temperature. Hasil perhitungan menunjukkan Qloss rata-rata sebesar 1032679,935 kJ, middle temperature rata-rata sebesar 124,17oC dan feed temperature rata-rata sebesar 128,07oC serta nilai efisiensi panas secara aktual pada LPD plant rata-rata sebesar 96,13%.
PEMBUATAN HIDROGEL BERBASIS POLIVINIL ALKOHOL (PVA)/KARBOKSIMETIL SELULOSA (CMC)/MINYAK ASIRI SERAI MENGGUNAKAN METODE CHEMICAL CROSSLINKED Tuti Indah Sari; Prahady Susmanto; Muhammad Hatta Dahlan; Natasya Islami Kamega; Amalia Pratiwi
JURNAL INTEGRASI PROSES Vol 13, No 1 (2024)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v13i1.24482

Abstract

Penelitian ini bertujuan untuk membuat hidrogel pembalut luka berbasis polivinil alkohol (PVA)/karboksimetil selulosa (CMC)/minyak asiri serai dengan asam sitrat sebagai agen pengikat silang (crosslink agent). Penambahan minyak asiri serai dilakukan untuk mengetahui pengaruhnya terhadap hidrogel. Penggunaan asam sitrat sebagai crosslink agent untuk meningkatkan sifat mekanik hidrogel yang dihasilkan. Formulasi hidrogel yang digunakan adalah PVA 10% (v/v) dan CMC 6% (v/v) dengan variasi jumlah minyak asiri serai dan asam sitrat. Hidrogel dikarakterisasi dengan fourier transform infrared (FTIR) dan scanning electron microscope (SEM) serta dianalisis dengan uji kuat tarik, daya serap air (swelling), dan aktivitas antibakteri. Pengujian kemampuan antibakteri dilakukan pada bakteri Staphylococcus aureus. Hasil penelitian menunjukkan peningkatan jumlah asam sitrat mengakibatkan nilai tensile strength yang semakin tinggi dan elongation at break yang menurun. Peningkatan minyak asiri serai menyebabkan penurunan nilai tensile strength dan elongation at break. Persentase swelling menurun dengan peningkatan jumlah minyak asiri serai dan asam sitrat. Hidrogel pembalut luka menunjukkan potensi yang baik ditandai dengan kemampuan antibakteri yang tinggi, yaitu dengan diameter zona bening rata-rata tertinggi sebesar 11,39 mm. Hasil tertinggi terdapat pada hidrogel dengan minyak asiri sebanyak 0,4 mL dan asam sitrat 2 % yang menunjukkan semakin banyak jumlah minyak asiri serai dan asam yang ditambahkan, semakin baik sifat antibakteri pada hidrogel.
PEMBUATAN SUPERABSORBEN DARI AKRILAMIDA DAN SELULOSA SERAT DAUN MAHKOTA NANAS DENGAN INISIATOR AMONIUM PERSULFAT Prahady Susmanto; Yandriani Yandriani; Putri Midelin; Sarah Khoirunnisa; Stevany Vanesya Syeva Maharani; Elfa Armelia
JURNAL INTEGRASI PROSES Vol 12, No 2 (2023)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jip.v12i2.21788

Abstract

Polimer superabsorben merupakan suatu material dengan kemampuan absorpsi yang tinggi, dihasilkan dari polimer sintetik seperti akrilamida. Penggunaan polimer sintetik memiliki dampak yang tidak baik terhadap lingkungan karena sulit terdegradasi. Upaya yang dapat dilakukan yaitu dengan mengganti sebagian polimer sintetik dengan polimer alam dalam proses pembuatannya. Penelitian ini bertujuan untuk menganalisis pengaruh penambahan selulosa serat daun mahkota nanas dan inisiator amonium persulfat terhadap kapasitas absorpsi dan rasio swelling biopolimer superabsorben. Pembuatan polimer superabsorben dilakukan dengan memvariasikan konsentrasi selulosa daun mahkota nanas, yakni dengan variasi 0, 5, 10, dan 15%. Variasi inisiator ammonium persulfate (APS) yaitu 0,4; 0,5; 0,6; dan 0,7 g dengan penambahan monomer akrilamida sebanyak 20 g. Analisis gugus fungsi dengan uji fourier transform infrared (FTIR) menunjukan adanya gugus fungsi seperti -OH, C-O dan C=C pada selulosa daun mahkota nanas. Hasil penelitian menunjukkan bahwa polimer superabsorben yang diproduksi dengan variasi 10% selulosa dan penambahan inisiator sebanyak 0,6 g menunjukkan karakteristik terbaik. Polimer ini memiliki kemampuan mengembang (swelling) tertinggi pada air, larutan urea 5%, dan NaCl 0,15 M, yakni masing-masing sebesar 665,7; 7,609; dan 7,125 g/g.
Simulasi Dan Optimalisasi Ammonia Converter Terhadap Peningkatan Persen Mol Amonia Produk Pada Ammonia Plant Susmanto, Prahady; Saharany, Mareta Dwi; Yona, Riski
Journal of Chemical Process Engineering Vol. 8 No. 2 (2023): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v8i2.644

Abstract

Ammonia converter merupakan reaktor berkatalis yang berfungsi untuk mereaksikan gas nitrogen dan gas hidrogen menjadi amonia. Kinerja yang dihasilkan dari ammonia converter sangat berpengaruh terhadap produktivitas dan efisiensi pabrik ammonia. Hal tersebut dapat diketahui dari peningkatan produksi ammonia yang diperoleh dari ammonia converter. Untuk mendapatkan konversi amonia yang tinggi, maka perlu dilakukan proses optimalisasi ammonia converter dengan penambahan cooler dan heat exchanger. Simulasi dan optimalisasi dilakukan dengan menggunakan simulator Aspen HYSYS versi 10. Data yang digunakan untuk simulasi adalah data operasi ammonia converter berupa data desain dan data aktual. Hasil simulasi menunjukkan bahwa persen mol NH3 yang didapat sebelum optimalisasi dari data desain yaitu sebesar 17,02%, sedangkan persen mol NH3 rata-rata yang didapat pada data aktual yaitu 15,973%. Setelah optimalisasi, persen mol NH3 yang didapat dari data desain yaitu sebesar 19,02%, persen NH3 rata-rata yang didapat pada data aktual yaitu 17,738%. Dapat disimpulkan bahwa pengaruh penambahan cooler pada ammonia converter yaitu meningkatkan persen ammonia outlet dengan menurunkan dan menjaga temperatur outlet bed converter. Pengaruh heat exchanger bertujuan menaikkan temperatur gas sebelum bereaksi di bed-2B dengan memanfaatkan panas gas outlet bed-2B. Akibatnya, temperatur gas outlet ammonia converter akan memiliki temperatur yang tidak terlalu tinggi menuju ke proses selanjunya yaitu proses pendinginan.
Evaluation of Section Shift Converter (HTS and LTS) Catalyst Performance Based on CO Conversion Value, Pressure Drop, and ATE Susmanto, Prahady; Yolanda, Alya Putri; Puspitasari, Riska; Anggraini, Dwi
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 10, No 1 (2025): EDISI MARET 2025
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v10i1.6401

Abstract

The shift converter process uses Copper-promoted iron (HTS) and Copper/Zinc (LTS) catalysts to convert syngas into hydrogen through the water-gas shift reaction. Catalytic performance evaluation was conducted by analyzing parameters such as Approach Temperature Equilibrium (ATE), pressure drop, and CO conversion. The findings indicate that in the HTS unit, CO conversion ranged from 69% to 75%, with a significant decline to 69% in the fifth data set due to reduced catalyst activity. Key contributing factors to this decrease include catalyst deactivation caused by sintering and poisoning. Within the LTS unit, CO conversion reached a peak value of 94.08% following the catalyst replacement in January 2024. This observed pressure drop also significantly affected catalyst efficiency, as increased pressure drop reduced the contact time between reactant gases and the catalyst, decreasing optimal CO conversion efficiency. ATE analysis showed that the reaction did not always reach the expected thermodynamic equilibrium, particularly in the HTS unit, where ATE values exceeding design specifications indicated inefficient reaction performance. Catalyst efficiency in the shift converter is significantly influenced by catalyst lifespan, pressure drop, and various operational factors, thus requiring routine catalyst replacement to maintain optimal reactor performance.
Analysis of the Influence of Center tube on Cyclone Preheater Efficiency in Production Units in the Cement Industry Susmanto, Prahady; Viola Yuliantika; Sryatin Arya
Journal of Chemical Process Engineering Vol. 10 No. 1 (2025): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v10i1.1586

Abstract

Cyclone Suspension preheater is an important part of the kiln unit which aims to separate materials and hot gases. The Suspension preheater consists of two strings, namely strings A and B and consists of 4 stages with stage 4 and stage 3 of string B not having a center tube. The efficiency calculation is carried out to determine the ability of the cyclone to separate material and gas and compare the efficiency of the cyclone which has a center tube with a cyclone without a center tube. The efficiency calculation is calculated using the Bohnet calculation. The efficiency calculation was obtained at stage 1 string A of 92.15%, stage 1 string B of 92.16%, stage 2 string A of 87.71%, stage 2 string B of 87.627%, stage 3 string A of 81.987%, stage 3 string B of 78.008%, stage 4 string A of 72.877%, and stage 4 string B of 73.459%. There was a decrease of 4% from stage 3 string A to stage 3 string B. A reduction in efficiency was observed in cyclones without a center tube. The gas flow in the cyclone is more regular with the presence of a center tube and has a longer residency time compared to a cyclone without a center tube. Acyclone without a center tube has a chaotic flow and turbulence can increase so that the separation between particles and gas is inefficient. The presence of a center tube effectively improves both separation efficiency and gas flow stability in the cyclone.
Performance Analysis and Optimization of an Ammonia Stripper through Scrubber Integration Using Industrial Data and Aspen Hysys Simulation Susmanto, Prahady; yani, Irsyadi; Bahrin, David; Maharani, Asty; Anggraini, Suci
Cognitia : International Engineering Journal Vol. 2 No. 1 (2026): Cognitia : International Engineering Journal
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/ciej.v2i1.16

Abstract

The stripping gas from the ammonia stripper still shows fluctuating ammonia (NH₃) content and, under certain conditions, has the potential to exceed the targeted limit. This study discusses the evaluation of the ammonia stripper output gas and efforts to reduce NH₃ levels by adding a scrubber unit as a further treatment using Aspen HYSYS V.11 simulation. However, previous studies have primarily focused on ammonia removal within the stripper unit under steady-state conditions, with limited investigation into the integration of scrubber systems to handle fluctuating industrial wastewater and steam flow conditions. Operational performance was evaluated using industrial data collected during August 6–10, 2025, by calculating NH₃ removal efficiency based on inlet–outlet concentrations, followed by Aspen HYSYS simulation using the Extended NRTL model to analyze the effect of wastewater flow rate and assess the optimization process through scrubber integration. The evaluation results show that before the addition of the scrubber, the NH₃ reduction efficiency in the ammonia stripper was in the range of 87.78–96.34% with an average value of 92.97%, but under conditions of high wastewater discharge, the NH₃ concentration in the stripping gas still increased. Scrubber integration simulations showed that the NH₃ concentration in the stripper exhaust gas decreased from 3.21% to 0.96%, equivalent to a reduction of approximately 70%, indicating significant emission optimization. These results indicate that the addition of a scrubber to the stripped gas is an effective alternative to control NH₃ emissions.
Effectiveness of Ultrafiltration Membrane Technology Combined with Zeolite–Ginger Coral Adsorbent in pH, TDS, EC, Fe, and Mn in Groundwater for Clean Water Production Susanti, Susi; Muhammad Rendana; Selpiana; Nina Haryani; Budi Santoso; Prahady Susmanto; Aminullah, Mohammad Wahyu; Hendrik Jimmyanto; Deby Ansyory; Nyimas Ulfatry Utami; Robekca Purba; Agbal Andrean; Zikri Rahman Rizal; Afriza Citra Rahmadhini; Halimah Maulidia
Indonesian Journal of Environmental Management and Sustainability Vol. 10 No. 2 (2026): June
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2026.10.2.134-144

Abstract

Groundwater is a vital water source for many communities, especially in rural areas, but its quality often fails to meet clean water standards due to contaminants such as heavy metals, organic compounds, and unsuitable pH, TDS, and EC levels. This study examines an integrated water treatment system combining adsorption and ultrafiltration technologies. The process begins with adsorption using zeolite and coral ginger stone to remove contaminants through ion exchange and Van der Waals interactions. The pre-treated water is then filtered through an ultrafiltration membrane to eliminate suspended solids and microorganisms based on pore size exclusion. The novelty of this study lies in the variation of adsorbent compositions, namely 100 g zeolite, 100 g coral ginger stone, and a 50:50 g mixture. Results indicate that the 50:50 combination provides the highest efficiency in improving groundwater quality. Under optimal conditions, TDS decreased to 38 ppm, EC to 76 µS/cm, temperature reached 29.8 °C, and pH approached neutral at 6.28, meeting clean water standards.
The Effect of Adding MTMS (Methyl-trimethoxysilane) as a Pore Former on the Absorption of Hydrogels Based on NACMC (Sodium Carboximethyl Cellulose) Anggraini, Dwi; Susmanto, Prahady; Aprilia, Ananda; Damayanti, Delfiana Triaprilia
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 11, No 1 (2026): EDISI MARET 2026
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v11i1.7643

Abstract

Superabsorbent hydrogels (SAHs) possess the remarkable ability to absorb and retain large amounts of water, making them promising eco-friendly materials for various applications. In this study, sodium carboxymethyl cellulose (NaCMC) was employed as the main polymer, modified with polyvinyl alcohol (PVA) to enhance structural stability through hydrogen bonding, and crosslinked with methyltrimethoxysilane (MTMS) to generate water-retaining porous networks. The effects of varying PVA and MTMS concentrations on the absorption capacity and chemical structure of the hydrogels were systematically investigated. The results demonstrated that the formulation containing 3 g of PVA and 4.71 mL of MTMS (B3) exhibited the highest absorption capacity of 453%, indicating optimal performance. These findings highlight the potential of NaCMC-based hydrogels as sustainable superabsorbent materials with promising applications in agriculture, water management, and biomedical fields.
Improving the Knowledge of Tanjung Bubuk Community at Palembang Regarding Plastic Biocomposites from Plastic Waste-Kapok Fiber Rahmatullah; Rizka Wulandari Putri; Prahady Susmanto; Harry Waristian; Alek Al Hadi; Muhammad Rendana; Selpiana
Jurnal Pengabdian Mitra Indonesia Vol 2 No 2 (2026): Mei 2026
Publisher : Mitra Akademia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.67380/jpmina.v2i2.34

Abstract

Plastic biocomposites play a significant role in reducing environmental impacts as an alternative to conventional plastics due to their more readily biodegradable nature. Plastic biocomposites can be made using a mixture of conventional plastic waste and kapok fiber through certain stages. The purpose of this community service is to increase public knowledge about how to process plastic waste and kapok fiber as raw materials for plastic biocomposites. Data collection techniques were carried out by providing an explanation of the procedure for making plastic biocomposites, followed by filling out a questionnaire about the level of understanding of the material provided. Based on the results of the survey through filling out the questionnaire before and after the activity was carried out, many residents did not know what plastic biocomposites were and only learned and understood after the activity was carried out.
Co-Authors Adib Ghifar Afriza Citra Rahmadhini Agbal Andrean Alek Al Hadi Amalia Pratiwi Anggraini, Suci Aprilia, Ananda Arin Putri Dila Arista Putri Permatasari Badria Dania Budi Santoso Budi Santoso Cundari, Lia Damayanti, Delfiana Triaprilia David Bahrin Deby Ansyory Dedek Oktari Dela Regina Pratiwi Dewantara, Dino Dwi Anggraini Elfa Armelia Ellen Ellen Fatullah, Muhammad Ilham Halimah Maulidia Harry Waristian Hendrik Jimmyanto Indah Statiska Intan Retri Utari Irsyadi Yani Jimmy Aldian Maulana Linda Santia M. Hatta Dahlan Maharani, Asty Mareta Dwi Saharany Moh. Wahyu Aminullah Muhammad Hatta Dahlan Muhammad Hatta Dahlan Muhammad Rendana Muhammad Rendana Mutiara Tri Wahyuni Nadira Ken KHALISA Natasya Islami Kamega Nicky Octaviani Nina Haryani Nyimas Ulfatry Utami Omar Ibrahim Puspitasari, Riska Putri Midelin R.R. Yunita Bayu Ningsih Rahmatullah Reza Rezita MAISYAROH Riski Yona Rizka Wulandari Putri Robekca Purba Saharany, Mareta Dwi Sarah Khoirunnisa Selpiana Selpiana SELPIANA Selpi Selpiana, Selpiana Sila Amelia Ayu Syifa Sisilia Pratama Sryatin Arya Stevany Vanesya Syeva Maharani Susi Susanti Teguh Widodo Tuti Indah Sari, Tuti Indah Viola Yuliantika Yandriani Yandriani Yandriani Yandriani Yandriani Yandriani Yolanda, Alya Putri Yona, Riski Zikri Rahman Rizal