使用鹼性固體廢棄物進行二氧化碳礦化與再利用

Alkaline Solid Wastes for Carbon Dioxide Mineralization and Utilization

潘述元(Shu-Yuan Pan) ； 蔣本基(Pen-Chi Chiang) ； 裴思魯(Si-Lu Pei) ； 陳則綸(Tse-Lun Chen) ； 陳奕宏(Yi-Hung Chen)

《臺灣鑛業》 70卷1期 (2018/03) Pp. 20-29

摘要

為減緩溫室氣體排放，國際間積極研發「二氧化碳礦化與再利用」技術，此減碳選項可將二氧化碳直接固定成固體沉澱鹽類，不需額外之濃縮與再生程序，且所得產物具有再利用之經濟效益。若使用鹼性固體廢棄物作為礦化原料，可建立廢棄物資源化供應鏈，符合循環經濟之理念。有鑑於此，本文研析國內外二氧化碳礦化與再利用技術現況，說明二氧化碳礦化之原理與工程績效，並提供產品再利用之潛在途徑及其績效評估；另一方面，針對應用二氧化碳礦化與再利用技術，建立廢棄物資源化供應鏈提出說明；最後，根據上述回顧重點，提出未來研究重點與方向，以供國內後續研究參考。

關鍵字

溫室氣體 ； 加速碳酸化 ； 廢棄物資源化 ； 綠色建材 ； 循環經濟

並列摘要

To mitigate the greenhouse gas emissions, CO_2 mineralization and utilization technologies have been aggressively developed and implemented around the world. With this option, the gaseous CO_2 can be directly fixed and stored as solid precipitates without additional concentration and/or regeneration processes. Moreover, the reacted products can be potentially utilized as green construction materials, thereby providing economic benefits. In the case of using alkaline solid wastes as feedstock, a waste-to-resource supply chain can be established toward a circular economy. Therefore, this article provides a brief overview of CO_2 mineralization and utilization technologies. The principles and applications of CO_2 mineralization are first illustrated, and then the performance of product utilization is evaluated. On the other hand, the establishment of waste-to-resource supply chain via the concept of CO_2 mineralization and utilization is described. Lastly, according to the findings of this article, several directions and highlights are proposed for the reference of future research.

並列關鍵字

Greenhouse Gas ； Accelerated Carbonation ； Waste-to-Resource Supply Chain ； Green Construction Materials ； Circular Economy