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Carbon capture and utilization (CCU) has been recognized as an important pathway toward mitigating climate change, but research on this topic has been heavily technology-oriented. Hence, this study aims to build understanding of CCU from a business perspective by a) exploring and conceptualizing the types of business model innovations (BMIs) employed by companies to harness CCU and b) analyzing what factors drive and determine economic value capture of these BMIs. We conducted a qualitative thematic analysis from a multiple-case study with nine industrial companies supported by a document analysis. Our results display 12 distinct CCU BMIs across carbon dioxide processing, engineering, and system optimization business domains and 17 value capture determinants grouped under four drivers, namely, policy and regulation, technology, markets and demand, and business compatibility. This study integrates carbon circulation into the circular business model and innovation management literature and strengthens the business angle of CCU research. [ABSTRACT FROM AUTHOR]

RFID readers for passive tags generally suffer from self-interference. The transmitter of the RFID reader is also in operation during receive periods to power the tag and enable backscatter modulation. The state-of-the-art solution employs a leaking carrier canceller, which needs to be adjusted. The proposed fast algorithm provides a starting point for conventional gradient based approaches, which already improves isolation by 7.2 dB at least. It is based on three scalar measurements, and does not demand for special hardware. The algorithm was tested on our RFID test bed and experiments show a significant decrease of steps necessary to reach the final leaking carrier canceller setting. [ABSTRACT FROM PUBLISHER]

In order to prevent of climate change, Carbon Capture and Storage(CCS) technologies have been developed. In conventional CCS, CO2 are captured by liquid absorbent and disposed at deep ocean or underground. However, there exist some problems such as sudden explosion or leak and one of great methods is CO2 utilization. When CO2 is absorbed by amines, it is converted to ionic state. If Ca2+ is added, precipitated calcium carbonate(PCC) can be formed. PCC is stable and can be used in various way. This is called Carbon Capture and Utilization(CCU). To maximize economic benefits, industrial solid wastes can be considered as Ca2+ source. There contained considerable amount of calcium component in petroleum cokes ash and waste cement. In this research, possibilities of CCU are dealt with. Amine absorbents were used and PCC was formed. To verify physical property of PCC, XRD and SEM images were obtained. Also, Amount of CO2 and yield of reaction were suggested. [ABSTRACT FROM AUTHOR]