With the development of manufacturing technology on the nanoscale, the precision of nano-devices is rapidly increasing with lower cost. Different from macroscale or microscale fluids, many specific phenomena and advan...With the development of manufacturing technology on the nanoscale, the precision of nano-devices is rapidly increasing with lower cost. Different from macroscale or microscale fluids, many specific phenomena and advantages are observed in nanofluidics. Devices and process involving and utilizing these phenomena play an important role in many fields in chemical engineering including separation, chemical analysis and transmission.In this article, we summarize the state-of-the-art progress in theoretical studies and manufacturing technologies on nanofluidics. Then we discuss practical applications of nanofluidics in many chemical engineering fields,especially in separation and encountering problems. Finally, we are looking forward to the future of nanofluidics and believe it will be more important in the separation process and the modern chemical industry.展开更多
Reclaimed asphalt pavement(RAP)has significant recycling value because it contains nonrenewable resources including asphalt and aggregate.However,thus far,only a small part of RAP materials can be used in the con-stru...Reclaimed asphalt pavement(RAP)has significant recycling value because it contains nonrenewable resources including asphalt and aggregate.However,thus far,only a small part of RAP materials can be used in the con-struction of recycled asphalt pavement,and the usage is regarded as a low-value utilization in the underlying layers.One of the most important reasons for this shortcoming is the problem of false particle size and pseudo gradation of RAP materials.Therefore,identifying suitable asphalt-aggregate separation technology is essential for improving the utilization of RAP materials in recycled asphalt mixture and enhancing the construction quality of recycled asphalt pavement.To address this,the paper performed a systematic review of asphalt-aggregate separation technologies for processing RAP materials and their prospects.Firstly,based on the composition of the asphalt mixture and the characteristics of RAP materials after aging,the key RAP separation technologies were proposed.Then,the concept,principle,and implementation methods of physical,chemical,and biological sep-aration methods of RAP materials were comprehensively analyzed.Moreover,the advantages and disadvantages of various separation technologies were discussed by comparing them with the related technologies in the petrochemical industry.The application prospects of various asphalt-aggregate separation methods for RAP materials can provide a reference for upgrading and expanding solid waste recycling technology for asphalt pavement.展开更多
深化专业课程教育教学改革,培养大学生的创新精神、职业素养和工程实践能力,是地方本科院校普遍面临的难点问题。以滁州学院为例,介绍了该校化学工程与工艺专业教师团队将工程教育专业认证和学习产出教育(outcomes based education,OBE...深化专业课程教育教学改革,培养大学生的创新精神、职业素养和工程实践能力,是地方本科院校普遍面临的难点问题。以滁州学院为例,介绍了该校化学工程与工艺专业教师团队将工程教育专业认证和学习产出教育(outcomes based education,OBE)理念融入专业课程改革,并从教育教学改革理念与思路、课程思政育人模式、课程内容体系设计、教学方法改革及教学考评方式5个方面采取的具体举措。结果表明:上述措施有利于知识传授和价值塑造互融互通,提升地方院校化工专业人才的工程实践能力。展开更多
基金Supported by the National Natural Science Foundation of China(No.21476125)Tsinghua University Foundation,(No.2013108930)performed at the “Exploration 100” platform supported by Tsinghua National Laboratory for Information Science and Technology
文摘With the development of manufacturing technology on the nanoscale, the precision of nano-devices is rapidly increasing with lower cost. Different from macroscale or microscale fluids, many specific phenomena and advantages are observed in nanofluidics. Devices and process involving and utilizing these phenomena play an important role in many fields in chemical engineering including separation, chemical analysis and transmission.In this article, we summarize the state-of-the-art progress in theoretical studies and manufacturing technologies on nanofluidics. Then we discuss practical applications of nanofluidics in many chemical engineering fields,especially in separation and encountering problems. Finally, we are looking forward to the future of nanofluidics and believe it will be more important in the separation process and the modern chemical industry.
基金This paper was financially supported by the National Natural Science Foundation of China(No.52178420 and 51878229)Research Project of Liaoning Provincial Transportation Investment Group Co.,Ltd.(202004)Key R&D projects in Liaoning Province(No.2020JH2/10300097).
文摘Reclaimed asphalt pavement(RAP)has significant recycling value because it contains nonrenewable resources including asphalt and aggregate.However,thus far,only a small part of RAP materials can be used in the con-struction of recycled asphalt pavement,and the usage is regarded as a low-value utilization in the underlying layers.One of the most important reasons for this shortcoming is the problem of false particle size and pseudo gradation of RAP materials.Therefore,identifying suitable asphalt-aggregate separation technology is essential for improving the utilization of RAP materials in recycled asphalt mixture and enhancing the construction quality of recycled asphalt pavement.To address this,the paper performed a systematic review of asphalt-aggregate separation technologies for processing RAP materials and their prospects.Firstly,based on the composition of the asphalt mixture and the characteristics of RAP materials after aging,the key RAP separation technologies were proposed.Then,the concept,principle,and implementation methods of physical,chemical,and biological sep-aration methods of RAP materials were comprehensively analyzed.Moreover,the advantages and disadvantages of various separation technologies were discussed by comparing them with the related technologies in the petrochemical industry.The application prospects of various asphalt-aggregate separation methods for RAP materials can provide a reference for upgrading and expanding solid waste recycling technology for asphalt pavement.
文摘深化专业课程教育教学改革,培养大学生的创新精神、职业素养和工程实践能力,是地方本科院校普遍面临的难点问题。以滁州学院为例,介绍了该校化学工程与工艺专业教师团队将工程教育专业认证和学习产出教育(outcomes based education,OBE)理念融入专业课程改革,并从教育教学改革理念与思路、课程思政育人模式、课程内容体系设计、教学方法改革及教学考评方式5个方面采取的具体举措。结果表明:上述措施有利于知识传授和价值塑造互融互通,提升地方院校化工专业人才的工程实践能力。
