Kurniawan, Shafa Salsabila (2024) Identifikasi Porositas, Distribusi Pori, dan Komposisi Batu Kapur terhadap Potensi Kelayakannya sebagai Batuan Induk dalam Deep Geological Disposal bagi Limbah Radioaktif. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Batu kapur memiliki potensi untuk menjadi batuan induk dalam deep geological disposal karena permeabilitasnya yang rendah, stabil dalam jangka panjang, dan memiliki kapabilitas untuk melakukan self-healing yang dapat mengurangi potensi migrasi fluida. Kelayakan suatu batuan dalam kaitan untuk aplikasi batuan induk pada deep geological disposal bagi limbah radioaktif dipengaruhi oleh permeabilitas, kapasitas sorpsi, kekuatan mekanik, stabilitas, dan lokasi. Karakteristik pori termasuk porositas merupakan salah satu faktor yang mempengaruhi permeabilitas. Pada penelitian ini, dilakukan pengujian dan identifikasi terhadap karakteristik pori serta komposisi penyusun batu kapur menggunakan SEM (scanning electron microscopy), BET (Brunauer-Emmett-Teller)-BJH (Barrett-Joyner-Halenda), dan pemrosesan citra digital untuk menilai potensi kelayakannya sebagai batuan induk dalam deep geological disposal. Porositas relatif yang diperoleh dari citra SEM sebesar 8-11% dan rata-rata diameter porinya berada di orde nano (15,80 nm), yang menunjukkan dominasi mesopori dan porositas yang relatif lebih tinggi dibandingkan calon batu induk potensial lainnya. Identifikasi kelayakan dari parameter-parameter tersebut mengungkap separuhnya merupakan karakteristik yang kurang disukai, sehingga disimpulkan bahwa batu kapur Plumpang tidak layak untuk dijadikan batuan induk pada pembuanag geologis limbah radioaktif.
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Limestone exhibits promising characteristics that make it a viable candidate for serving as a host rock in deep geological disposal through its low permeability, long-term stability, and potential self-healing qualities, which effectively mitigate fluid migration. The assessment of a host rock's suitability for deep geological disposal of radioactive waste involves evaluating its permeability, sorption capacity, mechanical strength, stability, and geographical positioning. One of the elements that has been demonstrated to influence permeability value is pore properties, namely porosity. This study involved the examination and analysis of the pore features and composition of limestone through the utilization of scanning electron microscopy (SEM), BET-BJH (Brunauer-Emmett-Teller & Barrett-Joyner-Halenda) analysis, and digital image processing techniques. The objective was to assess the viability of limestone as a prospective source rock for deep geological disposal. The scanning electron microscopy (SEM) scans reveal a relative porosity range of 8-11% and an average pore width of 15,80 nm, suggesting the prevalence of mesopores and a comparatively greater level of porosity in comparison to alternative host rock options. The assessment of all parameters indicated that half of those were unfavorable, leading to the conclusion that Plumpang limestone is not a suitable host rock for the deep geological disposal of radioactive waste.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | adsorpsi-desorpsi nitrogen, batu kapur, deep geological disposal, distribusi pori, SEM, limestone, nitrogen adsorption-desorption, pore distribution |
| Subjects: | Q Science > QC Physics > QC451 Spectroscopy Q Science > QD Chemistry > QD117.S64 Spectrophotometry Q Science > QD Chemistry > QD547 Flocculation, precipitation, adsorption, etc. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | Shafa Salsabila Kurniawan |
| Date Deposited: | 09 Feb 2024 17:20 |
| Last Modified: | 09 Feb 2024 17:20 |
| URI: | http://repository.its.ac.id/id/eprint/106618 |
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