提出了二氧化碳减排的CCU(Carbon Dioxide Capture and Utilization—CCU)新理念,系统分析了全球现在非常重视和关注的CCS(Carbon Dioxide Capture and Storage—CCS)存在投入较大的经济问题以外还存在比较大的CO2泄露、咸水层破坏、地...提出了二氧化碳减排的CCU(Carbon Dioxide Capture and Utilization—CCU)新理念,系统分析了全球现在非常重视和关注的CCS(Carbon Dioxide Capture and Storage—CCS)存在投入较大的经济问题以外还存在比较大的CO2泄露、咸水层破坏、地表拱起和诱发地震等潜在风险。因此作者提出二氧化碳减排不应是CCS而应该是CCU,即在低能耗低成本条件下,利用CO2矿化转化天然矿物和固体废物联产出高附加值的化工产品,将CO2作为一种资源,真正实现CO2的高效利用。作者已探索形成了可行的技术方法,包括氯化镁矿化CO2联产盐酸和碳酸镁、固废磷石膏矿化CO2联产硫基复合肥等技术。研究表明在人类可利用的范围内,利用地壳中1%的钙、镁离子进行CO2矿化利用,理论上以50%的转化率来计算,可矿化约2.56×107亿吨CO2,按照全球2010年的CO2排放量约为300.6亿吨,可满足人类约8.5万年的CO2减排需求。同时中国的磷石膏固废每年产出约5 000万吨,利用其中的钙离子进行CO2矿化,每年可消耗CO2约1 250万吨。作者提出的CO2矿化利用的CCU新理念和技术路线,在实现CO2减排的同时,由于高附加值产品的生成,总体经济效益分析具有较好的利润空间,是真正能够开展规模化工业化应用的二氧化碳减排方法。展开更多
文章介绍了我国CCS及CCUS的基本情况,并对其发展过程中存在的主要困难与问题进行了分析,鉴于CO2地质封存可能成为CCS或CCUS技术发展的主要障碍,作者提出了在我国实现大规模CO2矿化利用的CCU(CO2 capture and utilization)发展新理念,选...文章介绍了我国CCS及CCUS的基本情况,并对其发展过程中存在的主要困难与问题进行了分析,鉴于CO2地质封存可能成为CCS或CCUS技术发展的主要障碍,作者提出了在我国实现大规模CO2矿化利用的CCU(CO2 capture and utilization)发展新理念,选取了可参考的三条CCU技术发展路线,即利用氯化镁矿化CO2联产盐酸和碳酸镁技术路线、固废磷石膏矿化CO2联产硫基复合肥技术路线和利用钾长石矿化利用CO2的技术路线。文章最后就如何在我国发展和部署CCU技术路线方案提出了若干建议。展开更多
随着循证医学和循证护理的发展,我们越来越体会到循证实践指南的重要性,但如何实施指南,使病人最大程度地获益是医务工作者关注的问题。针对这一情况,美国医疗改进中心（institute for healthcare improvement,IHI）首先提出了集束化干...随着循证医学和循证护理的发展,我们越来越体会到循证实践指南的重要性,但如何实施指南,使病人最大程度地获益是医务工作者关注的问题。针对这一情况,美国医疗改进中心（institute for healthcare improvement,IHI）首先提出了集束化干预（bundles of care）这个概念,意思是集合一系列有循证基础的治疗及护理措施来处理某种难治的临床疾患[1]。展开更多
CO2 capture and storage(CCS) is an important strategy in combatting anthropogenic climate change.However,commercial application of the CCS technique is currently hampered by its high energy expenditure and costs.To ov...CO2 capture and storage(CCS) is an important strategy in combatting anthropogenic climate change.However,commercial application of the CCS technique is currently hampered by its high energy expenditure and costs.To overcome this issue,CO2 capture and utilization(CCU) is a promising CO2 disposal method.We,for the first time,developed a promising method to mineralize CO2 using earth-abundant potassium feldspar in order to effectively reduce CO2 emissions.Our experiments demonstrate that,after adding calcium chloride hexahydrate as an additive,the K-feldspar can be transformed to Ca-silicates at 800 C,which can easily mineralize CO2 to form stable calcium carbonate and recover soluble potassium.The conversion of this process reached 84.7%.With further study,the pretreatment temperature can be reduced to 250 C using hydrothermal method by adding the solution of triethanolamine(TEA).The highest conversion can be reached 40.1%.The process of simultaneous mineralization of CO2 and recovery of soluble potassium can be easily implemented in practice and may provide an economically feasible way to tackle global anthropogenic climate change.展开更多
文摘文章介绍了我国CCS及CCUS的基本情况,并对其发展过程中存在的主要困难与问题进行了分析,鉴于CO2地质封存可能成为CCS或CCUS技术发展的主要障碍,作者提出了在我国实现大规模CO2矿化利用的CCU(CO2 capture and utilization)发展新理念,选取了可参考的三条CCU技术发展路线,即利用氯化镁矿化CO2联产盐酸和碳酸镁技术路线、固废磷石膏矿化CO2联产硫基复合肥技术路线和利用钾长石矿化利用CO2的技术路线。文章最后就如何在我国发展和部署CCU技术路线方案提出了若干建议。
文摘随着循证医学和循证护理的发展,我们越来越体会到循证实践指南的重要性,但如何实施指南,使病人最大程度地获益是医务工作者关注的问题。针对这一情况,美国医疗改进中心（institute for healthcare improvement,IHI）首先提出了集束化干预（bundles of care）这个概念,意思是集合一系列有循证基础的治疗及护理措施来处理某种难治的临床疾患[1]。
基金supported by the International Cooperative Research Project of CO2 Storage and Utilization in Saline Aquifer (2012DFA60760)from the Ministry of Science and TechnologyBasic Research for Chinese Energy Storage in Caverns Built in Highly Impure Rock Salt(51120145001) from the Natural Science Foundation of China+2 种基金the National Natural Science Funds for Distinguished Young Scholars (51125017)the National Basic Research Projects of China (2011CB201201,2010CB226804)from the Ministry of Science and TechnologyKey Research Program from the Ministry of Education of China
文摘CO2 capture and storage(CCS) is an important strategy in combatting anthropogenic climate change.However,commercial application of the CCS technique is currently hampered by its high energy expenditure and costs.To overcome this issue,CO2 capture and utilization(CCU) is a promising CO2 disposal method.We,for the first time,developed a promising method to mineralize CO2 using earth-abundant potassium feldspar in order to effectively reduce CO2 emissions.Our experiments demonstrate that,after adding calcium chloride hexahydrate as an additive,the K-feldspar can be transformed to Ca-silicates at 800 C,which can easily mineralize CO2 to form stable calcium carbonate and recover soluble potassium.The conversion of this process reached 84.7%.With further study,the pretreatment temperature can be reduced to 250 C using hydrothermal method by adding the solution of triethanolamine(TEA).The highest conversion can be reached 40.1%.The process of simultaneous mineralization of CO2 and recovery of soluble potassium can be easily implemented in practice and may provide an economically feasible way to tackle global anthropogenic climate change.
