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All Journal Reaktor International Journal of Renewable Energy Development Refleksi Pembelajaran Inovatif
Fadilla Noor Rahma
Fakultas Teknologi Industri, Universitas Islam Indonesia
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Education Energy Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Social Sciences

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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 
Simulation of CO2 Conversion into Methanol in Fixed-bed Reactors: Comparison of Isothermal and Adiabatic Configurations Fadilla Noor Rahma
Reaktor Volume 19 No. 3 September 2019
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (451.624 KB) | DOI: 10.14710/reaktor.19.3.131-135

Abstract

CO2 capture and utilization (CCU) has been widely considered as a potential solution to overcome global warming. Conversion of CO2 into methanol is an interesting option to transform waste into value-added chemical while also reducing greenhouse gases emissions in the atmosphere. In this paper, utilization of CO2 into methanol was simulated using Aspen Plus software. The reaction between CO2 and H2 to produce methanol and water was carried out in a simulated fixed-bed reactor with Cu/ZnO/Al2O3 commercial catalyst, following LHHW (Langmuir – Hinshelwood – Hougen – Watson) kinetic model. Isothermal and adiabatic reactor configurations were compared under similar feed conditions and the concentration profile along the reactor was observed. The result showed that isothermal configuration converted 3.23% more CO2 and provided 16.34% higher methanol yield compared to the adiabatic reactor. Feed inlet temperature variation was applied and the effect to methanol production on both configurations was studied. The highest methanol yield for adiabatic and isothermal reactor was obtained at 200 oC and 240 oC respectively.
Implementasi Pembelajaran Berbasis Proyek dengan Integrasi Metode Daring Sinkron dan Asinkron pada Mata Kuliah Teknik Reaksi Kimia 2 Fadilla Noor Rahma; Lucky Wahyu Nuzulia Setyaningsih
Refleksi Pembelajaran Inovatif Vol 3, No 1 (2021): Volume 3 Nomor 1 Tahun 2021
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/rpi.vol3.iss1.art2

Abstract

Penelitian ini bertujuan untuk mengoptimalkan pembelajaran mata kuliah Teknik Reaksi Kimia 2 di lingkungan PSTK FTI UII. Terdapat dua poin inovasi yang diteliti. Poin pertama adalah pembelajaran berbasis proyek yang bertujuan untuk meningkatkan metode penyampaian materi yang selama ini cenderung bersifat searah dan kurang melibatkan mahasiswa. Indikator keberhasilan dari poin pertama tersebut adalah tingkat kepuasan mahasiswa serta tingkat ketercapaian atau pemenuhan CPMK. Sedangkan poin inovasi kedua terfokus pada pengembangan metode pembelajaran daring yang efisien secara waktu, mendorong mahasiswa untuk belajar secara mandiri, sekaligus memfasilitasi komunikasi dua arah untuk diskusi dan pemberian umpan balik. Untuk dapat mencapai hal-hal tersebut, pembelajaran akan dilakukan dengan integrasi metode daring sinkron dan asinkron. Kedua metode tersebut bersifat mendukung pengerjaan tugas proyek yang merupakan inti pembelajaran di mata kuliah Teknik Reaksi Kimia 2. Keberhasilan kinerja dari poin inovasi kedua diindikasikan dengan tingkat kepuasan mahasiswa. Dari hasil penelitian, diperoleh tingkat ketercapaian CPMK sebesar 89%, tingkat kepuasan mahasiswa terhadap tugas proyek sebesar 89,3%, dan tingkat kepuasan mahasiswa terhadap integrasi metode daring sinkron dan asinkron sebesar 86,9%. Berdasarkan hasil yang telah dicapai, metode pembelajaran ini dapat diterapkan di masa yang akan datang, namun perlu perbaikan dalam hal peningkatan keaktifan mahasiswa dalam tugas kelompok maupun dalam kelas.
Co-Authors Arif Hidayat Arif Hidayat Cholila Tamzysi Lucky Wahyu Nuzulia Setyaningsih Muflih Arisa Adnan