A study on the purity and recovery of carbon dioxide gas from binary flue gas mixture using different adsorbents in pressure equalized pressure swingadsorptio
Pelepasan gas karbon dioksida (CO2) kepada alam sekitar menyumbang
kepada pemanasan global dan proses perubahan iklim. Untuk mengurangkan kesan
pembebasan gas CO2 kepada alam sekitar, kajian ini menjelajah penggunaan bahan
penjerap tempurung isirung palma teraktif (APKS) dan Kerangka-Imidazolate-
Zeolit-8 (ZIF-8) dalam proses penjerapan buaian tekanan (PSA) untuk memerangkap
CO2 daripada satu campuran dedua gas serombong mengandungi CO2 dan gas
nitrogen (N2). CO2 merupakan spesies lebih kuat terjerap berbanding dengan
nitrogen dalam gas serombong. Bahan penjerap itu kedua-duanya disedia dan
dicirikan menggunakan analisa Brunauer–Emmett–Teller (BET), analisa Mikroskopi
Elektron Imbasan (SEM), analisa X-Ray Tenaga Sebaran (EDX), analisa Therma-
Gravimetrik (TGA), analisa saiz partikel dan analisa Pembelauan Sinar-X (XRD).
Kajian masa titik bolos dilakukan pada bahan penjerap dengan meyiasat kesan jenisjenis
bahan penjerap dan komposisi gas (15% - 25% CO2). APKS terbukti bahan
penjerap yang lebih baik dengan perkembangan besar pada kepekatan gas CO2 yang
diuji. Masa titik bolos kemudiannya diterima ke dalam PSA dan prestasi kedua-dua
bahan penjerap dalam proses itu telah dinilai. Kesan jenis bahan penjerap dan
komposisi gas dalam PSA telah disiasat. Ketulenan gas CO2 telah dapat ditumpukan
kepada 82.99% manakala pemulihan sebanyak 99.61% juga ditentukan. Keputusan
yang didapati ini memberi sedikit harapan dalam aplikasi APKS dan ZIF-8 dalam
pemerangkapan CO2 dalam PSA yang boleh jadi berguna untuk pemulihan alam
sekitar dan penulenan nitrogen.
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Carbon dioxide (CO2) gas emission to the atmosphere contributes to global
warming and climate changes processes. To mitigate the effects of carbon dioxide
release to the atmosphere, this study explores the usage of activated palm kernel shell
adsorbent (APKS) and zeolitic imidazolate framework-8 (ZIF-8) in pressure swing
adsorption (PSA) processes to remove carbon dioxide from a binary mixture of flue
gas containing CO2 and nitrogen (N2) gas. CO2 is the more strongly adsorbed species
compared to nitrogen in a flue gas. The adsorbents were both prepared and
characterized using Brunauer–Emmett–Teller (BET) Analysis, Scanning Electron
Microscope (SEM) analysis, Energy Dispersive X-Ray (EDX) analysis,
Thermogravimetric analysis (TGA), Particle Size Analysis and X-Ray Diffraction
(XRD) analysis. Breakthrough studies were performed on the adsorbents with the
effect of adsorbent types and feed gas composition (15% - 25% CO2) investigated.
APKS proved to be a better adsorbent with larger breakthroughs at the tested feed
CO2 concentrations. The breakthrough time was adopted into the PSA and the
performance of both adsorbents in the process were evaluated. The effects of
adsorbent type and feed gas composition in PSA were investigated. The purity of
carbon dioxide gas was able to be concentrated to 82.99% and a recovery of 99.61%
was also determined. These results provide some promising insight into the
application of APKS and ZIF-8 in carbon dioxide capture in PSA which could be
useful for environmental remediation and nitrogen purification.
A study on the purity and recovery of carbon dioxide gas from binary flue gas mixture using different adsorbents in pressure equalized pressure swingadsorptio
A study on the purity and recovery of carbon dioxide gas from binary flue gas mixture using different adsorbents in pressure equalized pressure swingadsorptio / Tharveen Raj Rajalingam