Tesis ini mengkaji tahap penyerapan/ jerapan karbon dioksida pada kalsium oksida bersaiz nano dan hidrotalsit komersil dan campurannya. Percubaan dan hasil kajian disajikan untuk tahap penyerapan/ jerapan untuk campuran 100%, 66.67%, 33.33% dan 0% zarah kalsium oksida bersaiz nano dengan hydrotalsit pada suhu 30°C, 100°C dan 700°C. Kajian menunjukkan100% kalsium oksida bersaiz nano mempunyai tahap penyerapan awal tertinggi pada suhu 30°C sedangkan 0% kalsium oksida bersaiz nano mempunyai tahap awal tertinggi serapan pada 100°C. Untuk experimen pada 700°C, 33.33% kalsium oksida bersaiz nano mempunyai tahap penyerapan awal tertinggi.
Pekali difusi yang selanjutnya dinilai untuk 100% kalsium oksida bersaiz nano dan 100% hydrotalsit. Difusi Knudsen dominan dalam 100% kalsium oksida bersaiz nano sedangkan difusi permukaan lebih dominan dalam proses jerapan 100% hydrotalsit. Pemalar laju reaksi dinilai untuk 100% kalsium oksida bersaiz nano dan ia meningkat dengan peningkatan suhu semasa proses penyerapan.
___________________________________________________________________________________
This paper studies on the rates of absorption/ adsorption of carbon dioxide on nanosized calcium oxide and commercial hydrotalcite and mixtures thereof. Experiment studies and results are presented for rates of absorption/ adsorption for 100%, 66.67%, 33.33% and 0% nano-sized calcium oxide particles in hydrotalcite at 30°C, 100°C and 700°C. From the results, it was found that 100% nano-sized calcium oxide had the highest initial rate of absorption at 30°C whereas 0% nano-sized calcium oxide had the highest initial rate of sorption at 100°C. For experiments conducted at 700°C, 33.33% nano-sized calcium oxide had the highest initial rate of sorption. The diffusion coefficients were thereafter evaluated for 100% nano-sized calcium oxide and 100% hydrotalcite. Knudsen diffusion is dominant in 100% nano-sized calcium oxide while surface diffusion is more dominant in adsorption process of 100% hydrotalcite. Reaction rate constants were evaluated for 100% nano-sized calcium oxide and it increases with increasing temperature during absorption process.