Sequestration of carbon dioxide by different sepentines with mineral carbonation

• Main Authors: Yu-Fong Huang, 黃裕峯
• Other Authors: Zeng-Yei Hseu
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/70465522100680690503

碩士 === 國立屏東科技大學 === 環境工程與科學系所 === 101 === CO2 capture technologies, it is sealed up for oil groove and natural gas trough, seal up for safekeeping in the ocean, the mineral sequestration. Mineral carbonation is the safest and stable methods. The reserves of mineral are abundant, so this study will use the way of mineral carbonation as CO2 sequestration method. The study will do different regions of the serpentine for mineral carbonation, the purpose is 1. To fix CO2 in the atmosphere. 2. Comparison CO2 sequestration of serpentine in different regions. 3. Using different reaction temperature, time and solvents to compare carbonation. The peak of XRD no clear change during carbonation. The Mg carbonate is too to be identified by XRD. However, the peaks 30.90o and 41.92 o is Mg carbonate, particularly for the slag sample. The energy at 290 eV with NEXAFS revealed the carbonate group. The carbon conversion rate is calculated by TGA. Yuli has the highest conversion rate 21.90%, followed by Fengtina 18.13%, than Rueisuei 14.91% and magnesium 12.43%, the lowest conversion rate is Wanrong 4.34%. Slag sample can achieve 51.30% at 1M HCl-75℃condition. The result with HCl has batter than deionized water in the different solvent, but increased HCl concentration on carbonate only some affect, it can try to explore the higher temperature later.