Deployment of Accelerated Carbonation Using Alkaline Solid Wastes for Carbon Mineralization and Utilization Toward a Circular Economy,ACS Sustainable Chemistry & Engineering

当前位置： X-MOL 学术 › ACS Sustain. Chem. Eng. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Deployment of Accelerated Carbonation Using Alkaline Solid Wastes for Carbon Mineralization and Utilization Toward a Circular Economy
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-07-14 00:00:00 , DOI: 10.1021/acssuschemeng.7b00291
Shu-Yuan Pan,Kinjal J. Shah,Yi-Hung Chen,Ming-Huang Wang,Pen-Chi Chiang

This study suggests that the waste-to-resource supply chain can offer an approach to address simultaneously the issues of waste management and CO₂ emissions toward a circular economy. Alkaline solid wastes can be used to mineralize CO₂ through an accelerated carbonation reaction, especially if the wastes are generated near the point source of CO₂, to achieve environmental and economic benefits. To enhance the performance of accelerated carbonation, a high-gravity carbonation process using a rotating packed bed reactor was developed and deployed. Due to additional energy consumption in high-gravity carbonation, the environmental benefits and economic costs should be critically assessed from a life-cycle perspective. In this study, the resource potential of alkaline solid wastes in Taiwan was first determined for CO₂ mineralization and utilization using the high-gravity carbonation process. Then, the performances of the process from engineering, environmental, and economic perspectives were evaluated and exemplified by a steelmaking plant. The results indicated that, with a CO₂ removal ratio of 97–98%, the energy consumption of the high-gravity carbonation was estimated to be ∼345 kWh/t-CO₂. From the perspective of environmental benefits, CO₂ emission from the cement industry could be indirectly avoided by roughly one t-CO₂-eq/t-slag due to the utilization of carbonated products.

更新日期：2017-07-15

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南