Performa Kinerja Sorben Cao Eggshell Dan Seashell Untuk Co2 Capture Pada SE-SMR Temperatur Rendah

Pamungkas, Bayu Aji and Alfattah, Farid Maulana (2026) Performa Kinerja Sorben Cao Eggshell Dan Seashell Untuk Co2 Capture Pada SE-SMR Temperatur Rendah. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini mengevaluasi pengaruh asal material CaCO3 biogenik terhadap kinetika dekarbonasi dan stabilitas siklus sorben CaO untuk aplikasi Sorption-Enhanced Steam Methane Reforming (SE-SMR), dengan fokus pada upaya penurunan energi regenerasi sorben. Tiga sumber CaCO3 yang dikaji meliputi material industry, Eggshell, dan Seashell. Karakterisasi dan analisis kinetika dilakukan untuk menentukan energi aktivasi (Ea) dekomposisi serta uji siklus karbonasi–dekarbonasi hingga 20 siklus guna mengevaluasi kestabilan massa. Hasil menunjukkan bahwa CaO berbasis seashell memiliki energi aktivasi terendah sebesar 188,08 kJ/mol dibandingkan eggshell (255,90 kJ/mol) dan industrial (248,45 kJ/mol), yang mengindikasikan kemudahan dekomposisi CaCO3 menjadi CaO pada temperatur lebih rendah. Dari sisi stabilitas, seashell menunjukkan penurunan massa hanya 5% setelah 20 siklus, lebih rendah dibandingkan eggshell (16%) dan industrial (25%). Stabilitas tinggi ini dikaitkan dengan karakteristik morfologi dan ukuran partikel yang lebih besar serta keberadaan fase aragonit yang bersifat metastabil, yang mendukung dekomposisi lebih cepat sekaligus ketahanan siklik. Meskipun memiliki luas permukaan relatif lebih kecil berdasarkan analisis BET, struktur tersebut mengurangi aglomerasi dan meningkatkan ketahanan material. Secara keseluruhan, CaO berbasis seashell menunjukkan performa paling unggul sebagai sorben untuk operasi SE-SMR pada temperatur dekomposisi rendah, sehingga berpotensi menurunkan konsumsi energi regenerasi dan meningkatkan efisiensi produksi hidrogen rendah karbon.
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This study evaluates the influence of biogenic CaCO3 sources on the de-carbonation kinetics and cyclic stability of CaO sorbents for Sorption-Enhanced Steam Methane Reforming (SE-SMR), with a focus on reducing sorbent regeneration energy. Three CaCO3 sources were investigated, namely seashell, eggshell, and industrial-grade material. Characterization and kinetic analysis were conducted to determine the activation energy (Ea) of decomposition, along with carbonation–decarbonation cyclic tests up to 20 cycles to assess mass stability. The results show that seashell-derived CaO exhibits the lowest activation energy of 188.08 kJ/mol compared to eggshell (255.90 kJ/mol) and industrial material (248.45 kJ/mol), indicating easier decomposition of CaCO3 into CaO at lower temperatures. In terms of stability, seashell shows only a 5% mass loss after 20 cycles, which is lower than eggshell (16%) and industrial material (25%). This high stability is attributed to its morphological characteristics and larger particle size, as well as the presence of a metastable aragonite phase, which promotes faster decomposition while maintaining cyclic durability. Although BET analysis indicates a relatively lower surface area, this structure reduces particle agglomeration and enhances material resistance. Overall, seashell-based CaO demonstrates the best performance as a sorbent for SE-SMR operation at low decomposition temperatures, offering potential for reduced regeneration energy consumption and improved efficiency in low-carbon hydrogen production.

Item Type:	Thesis (Diploma)
Uncontrolled Keywords:	Cangkang Telur, Cangkang Kerang, Dekomposisi, Kalsinasi, Sorpsi CO2, Eggshell, Seashell, Decomposition, Calcination, Sorption CO2
Subjects:	T Technology > TP Chemical technology > TP155.7 Chemical processes. T Technology > TP Chemical technology > TP245.C3 Calcium carbonate.
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering Technology
Depositing User:	Farid Maulana Alfattah
Date Deposited:	29 Jul 2026 08:00
Last Modified:	29 Jul 2026 08:00
URI:	http://repository.its.ac.id/id/eprint/139731

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