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All Journal Journal Of Chemical Process Engineering JURNAL REKAYASA KIMIA & LINGKUNGAN
Rahma Muthia, Rahma
Chemical Engineering, Universitas Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jcpe.v8i1.757

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.
Techno-Economic Analysis of Electricity Generation From Rice Husk Based On Demand For Electric Vehicle: A Case Study In Surabaya City, Indonesia Muthia, Rahma; Putro, Muhamad Rifan Aji Wahyudi
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 Dijan Supramono Muhamad Fakri Firdaus, Muhamad Nelson Saksono Putro, Muhamad Rifan Aji Wahyudi Ratih Tien Seratri, Ratih Setijo Bismo Wahyu Widodo