title: Stabilization of carbon dioxide and chromium slag via carbonation.
abstract: As the main greenhouse gas, CO2is considered as a threat in the context of global warming. Many available technologies to reduce CO2emission was about CO2separation from coal combustion and geological sequestration. However, how to deal with the cost-effective storage of CO2has become a new challenge. Moreover, chromium pollution, the treatment of which requires huge energy consumption, has attracted people's widespread attention. This study is aimed to develop the sequestration of CO2via chromium slag. A dynamic leaching experiment of chromium slag was designed to testify the ability of CO2adsorption onto chromium slag and to release Cr(VI) for stabilization. The results showed that the accumulative amounts of Cr(VI) were ca. 2.6 mg/g released from the chromium slag after 24 h of leaching. In addition, ca. 89 mg/g CO2was adsorbed by using pure CO2in the experiment at 12 h. Calcite is the only carbonate species in the post-carbonated slag analyzed by powder X-ray diffraction and thermal analysis. The approach provides the feasibility of the utilization of chromium slag and sequestration of the carbon dioxide at the same time at ordinary temperatures and pressures.
authors: a MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Department of Environmental Engineering, Laboratory of Electrochemistry and Energy Storage, State Key laboratory of Clean Energy Utilization , Zhejiang University , Hangzhou , People's Republic of China.
authors: Xingxing
authors: X
authors: Wu
authors: a MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Department of Environmental Engineering, Laboratory of Electrochemistry and Energy Storage, State Key laboratory of Clean Energy Utilization , Zhejiang University , Hangzhou , People's Republic of China.|b Environmental Monitoring Center of Taizhou , Taizhou, Zhejiang , People's Republic of China.
authors: Binbin
authors: B
authors: Yu
authors: a MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Department of Environmental Engineering, Laboratory of Electrochemistry and Energy Storage, State Key laboratory of Clean Energy Utilization , Zhejiang University , Hangzhou , People's Republic of China.
authors: Wei
authors: W
authors: Xu
authors: a MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Department of Environmental Engineering, Laboratory of Electrochemistry and Energy Storage, State Key laboratory of Clean Energy Utilization , Zhejiang University , Hangzhou , People's Republic of China.
authors: Zheng
authors: Z
authors: Fan
authors: a MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Department of Environmental Engineering, Laboratory of Electrochemistry and Energy Storage, State Key laboratory of Clean Energy Utilization , Zhejiang University , Hangzhou , People's Republic of China.
authors: Zucheng
authors: Z
authors: Wu
authors: a MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Department of Environmental Engineering, Laboratory of Electrochemistry and Energy Storage, State Key laboratory of Clean Energy Utilization , Zhejiang University , Hangzhou , People's Republic of China.|c Institute of Environmental Engineering, East China Jiao Tong University , Nanchang , Jiangxi , People's Republic of China.
authors: Huimin
authors: H
authors: Zhang
mesh_terms: D002245:Carbon Dioxide; D002254:Carbonates; D002857:Chromium; D007220:Industrial Waste
chemical_list: D002254:Carbonates; D007220:Industrial Waste; D002857:Chromium; D002245:Carbon Dioxide
keywords: Stabilization of CO2; carbonation; chromium slag; release of Cr(VI); sequestration