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All Journal Reaktor International Journal of Renewable Energy Development Equilibrium Journal of Chemical Engineering
Muflih Arisa Adnan
Universitas Islam Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology

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Investigation of Process Parameters Influence on Municipal Solid Waste Gasification with CO2 Capture via Process Simulation Approach Rahma, Fadilla Noor; Tamzysi, Cholila; Hidayat, Arif; Adnan, Muflih Arisa
International Journal of Renewable Energy Development Vol 10, No 1 (2021): February 2021
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2021.31982

Abstract

Integration of gasification with CO2 capture using CaO sorbent is proposed as an alternative treatment to convert municipal solid waste (MSW) into energy. Aspen Plus process simulator was employed to study the process. Two models were built to represent the non-sorbent and the sorbent-enabled MSW gasification. The model validation against available experimental data shows high accuracy of the simulation result. The effect of CO2 capture using CaO sorbent on the syngas composition and lower heating value (LHV) was observed by comparing the two models, and sensitivity analysis was performed on both models. Several process parameters affecting the syngas composition and LHV were investigated, including CaO/MSW ratio, temperature, equivalence ratio, and steam/MSW ratio. The addition of CaO sorbent for CO2 capture was found to successfully reduce the CO2 content in the syngas, increase the H2 composition, and improve the syngas LHV at the temperature below 750 oC. The maximum H2 composition of 56.67% was obtained from the sorbent-enabled gasification. It was found that increasing equivalence ratio leads to a higher H2 concentration and syngas LHV. Raising steam/MSW ratio also increases the H2 production, but also reduces the LHV of the syngas. Observation of the temperature effect found the highest H2 production at 650 oC for both non-sorbent and sorbent-enabled gasification. 
Exergy Analysis of Microalgae Thermochemical Conversion using Aspen Plus Simulation Cholila Tamzysi; Muflih Arisa Adnan; Fadilla Noor Rahma; Arif Hidayat
Reaktor Volume 20 No.4 December 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (124.003 KB) | DOI: 10.14710/reaktor.20.4.166-173

Abstract

Microalgae is known as the future bioenergy resources due to its unlimited potential and availability. One of the numerous paths to acquire an energy source is gasification, which produce syngas and methane as a hydrocarbon fuel or feedstock product. To set up an efficient gasification plant, several essential information is needed including the effect of oxidizing agent and steam to carbon (S/C) ratio to energy efficiency on certain biomass properties. This paper aims to study the highest exergy possibility on microalgae gasification process by examining the effect of steam and air flowrate independently via ASPEN Plus simulation. The result was validated with experimental data to verify the simulation reliability. It was found that the thermodynamic based simulation is suitable to predict the reactor behavior and acquire an optimum operating condition.Keywords: microalgae; gasification; exergy; simulation 
Comparative Study of Biomass Gasification for Electricity and Methanol Production Al Rizqi, Muhammad Aldiansyah; Cahyari, Khamdan; Adnan, Muflih Arisa
Equilibrium Journal of Chemical Engineering Vol 9, No 2 (2025): Volume 9, No 2 December 2025
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v9i2.106863

Abstract

ABSTRACT. The Indonesian government has established several programs and policies to support the development of new and renewable energy as part of the energy transition and carbon emission reduction efforts, with a national energy mix target of 23% in 2025 and 31% in 2050. Based on data released by the Central Statistics Agency of Indonesia in 2023, East Java has a wealth of sugar cane, rice, and corn kernels of 1,129,000 tons, 9,591,420 tons, and 5,991,810 tons, respectively. Therefore, biomass wastes are attractive as a gasification feedstock. Electricity and methanol are commodities that can support the government. This study evaluated and compared both the technical performance and economic feasibility between various combinations of biomass waste feed scenarios from bagasse, rice husk, and corncob to produce various combinations of product scenarios using Aspen Plus V14 simulation which constitutes the novelty of this research. The evaluation process was conducted using the Aspen Plus V14. The operating conditions of the gasification process were determined through a sensitivity analysis of key process variables, namely temperature, pressure, and steam-to-biomass ratio, to identify their effects on the optimal composition of the produced syngas. The utilization of syngas for electricity and methanol production was also simulated using Aspen Plus V14, where the operating conditions and resulting products were evaluated based on the required energy input and the corresponding carbon emissions. The economic feasibility of the process was assessed using key financial indicators, including payback periods, Return on Investment (ROI), Internal Rate of Return (IRR), and Net Present Value (NPV). The evaluation results indicate that single feed scenario from corncob is technically and economically feasible to produce methanol and electricity under separate production scenarios. Bagasse is feasible for electricity generation, while the other biomass scenarios did not meet the evaluation criteria.Keywords:Biomass, Electricity, Methanol, Syngas,Economic
Co-Authors Al Rizqi, Muhammad Aldiansyah Arif Hidayat Arif Hidayat Cholila Tamzysi Fadilla Noor Rahma Khamdan Cahyari