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All Journal Jurnal Bahan Alam Terbarukan Journal Of Chemical Process Engineering (JCPE) JURNAL REKAYASA KIMIA & LINGKUNGAN
Rahma Muthia
Universitas Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

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Efek Rasio Umpan Co-Gasifikasi Batu Bara dan Tandan Kosong Kelapa Sawit terhadap Produksi Metanol: Studi Simulasi Rahma Muthia
Journal of Chemical Process Engineering Vol 8, No 1 (2023)
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jcpe.v8i1.1576

Abstract

Metanol memiliki banyak kegunaan di berbagai bidang, baik sebagai senyawa kimia antara untuk diproses lebih lanjut, sebagai penyusun sebuah senyawa kimia akhir, maupun sebagai bahan bakar. Fleksibilitas penggunaan metanol menjadikan peranannya strategis dalam pengembangan bahan kimia dan energi masa depan. Penelitian ini mengkaji efek rasio umpan batu bara dan tandan kosong kelapa sawit pada proses co-gasifikasi untuk menghasilkan metanol, dengan melakukan studi simulasi di piranti lunak Aspen Plus v.11. Variasi rasio tersebut adalah 100-0, 85-15, 70-30, 50-50, 30-70, 15-85, dan 0-100, di mana rasio 100-0 menunjukkan proses gasifikasi batu bara murni. Performa proses diukur dengan menggunakan parameter process mass intensity (PMI), yaitu parameter yang lazim diterapkan di dunia industri untuk mengevaluasi aspek berkelanjutan sebuah proses. Hasil penelitian ini menunjukkan bahwa berkurangnya komposisi batu bara pada umpan co-gasifikasi menyebabkan terjadinya penurunan kandungan CO pada syngas. Hal ini menyebabkan penurunan produktivitas proses sintesis metanol, yang diindikasikan dengan meningkatnya nilai PMI. Selain itu, penelitian ini juga menghasilkan luaran berupa tren PMI terhadap komposisi batu bara di dalam umpan. Tren tersebut memberikan sebuah persamaan polinomial beroder dua (y = 0,0002x2 – 0,0481x + 5,3381) yang berguna bagi para perancang pabrik untuk memprediksi secara cepat mengenai jumlah metanol yang dapat dihasilkan apabila rasio umpan co-gasifikasi divariasikan.
Effects of Steam-To-Biomass Ratio and Temperature in Gasification on The Methanol Conversion and Selectivity: A Simulation Study of Biomass to Methanol Rahma Muthia; Muhammad Raihan Pratama
Jurnal Bahan Alam Terbarukan Vol 12, No 1 (2023): June 2023 [Nationally Accredited - Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v12i1.42365

Abstract

Gasification is an attractive pathway for valorizing waste and biomass as it can deal with a wide range of feedstocks yielding gaseous products that be converted further to valuable biofuels and chemicals. While many previous studies commonly discussed the effects of gasification operating parameters, such as operating conditions, biomass feedstocks and gasifying agents, on syngas compositions, fewer studies evaluated the effects of gasification process parameters on final products derived from syngas. Essentially, performing an integrated assessment of the biomass-to-product conversion gives a thorough understanding of the biomass processing and provides one with useful heuristics for the conversion of biomass to valuable chemicals. This study evaluates the effects of steam-to-biomass ratio (S/B = 0.3 – 0.7) and gasification temperature (Tgasif = 900℃ – 1,100℃) on the methanol production by performing simulations in the Aspen Plus v.11 process simulator. The kinetically controlled reactions model was considered in the methanol synthesis unit to mimic its actual process condition and to take into account the possibility of the side product formation. The outcome of this study recommends that the steam-to-biomass ratio gives more notable effects on the gasification distribution products and the conversion of syngas to methanol than those given by the gasification temperature. While, the reaction selectivity to methanol remains high, and it is not sensitive to the change of steam-to-biomass ratios and gasification temperatures.
Techno-Economic Analysis of Electricity Generation From Rice Husk Based On Demand For Electric Vehicle: A Case Study In Surabaya City, Indonesia Rahma Muthia; Muhamad Rifan Aji Wahyudi Putro
Jurnal Rekayasa Kimia & Lingkungan Vol 20, No 1 (2025): Jurnal Rekayasa Kimia & Lingkungan (June, 2025)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v20i1.36924

Abstract

On August 5, 2019, the President of the Republic of Indonesia issued a Presidential Regulation (Perpres) concerning the acceleration of the battery-based electric motorized vehicle program for road transportation. However, fossil energy sources such as coal, oil and natural gas used in conventional power plants are increasingly limited, so alternative energy that is more sustainable and environmentally friendly is needed. One source of sustainable electrical energy is biomass wastes such as rice husks, which have a potential CO2emission reduction of 142,610.51 tCO2/year. The method used for technical analysis by simulating the process of processing biomass waste into electrical energy using the gasification process with Aspen Plus software as a tool to obtain optimum operating conditions. Biomass with flow 32,906.9 kg/h is fed into the gasification process area and then produces 1,538 kmol/h of syngas which reacted with airflow 9,779 kmol/h. The selling target for electric products is to supply the electricity needs of electric vehicle users in Surabaya. This research is possible to do with the consideration that East Java is the province with the largest rice production in Indonesia, Surabaya is a metropolitan city and is the economic center of the province of East Java so it is possible to developments related to the infrastructure of electric vehicles and the electric vehicle itself. Based on the economic feasibility analysis, the biomass power plant has an NPV of Rp.163 million, an IRR is 15.01%, WACC 7.34%, LCOE 4.063 Rupiah/kWh and a payback period of 6 years.
Co-Authors Muhamad Rifan Aji Wahyudi Putro Muhammad Raihan Pratama