초록 |
A combination of proven technologies enabled by scalable and modular devices enables the realization of a carbon-neutral energy system. Two CO2 conversion systems have been developed as a prototype for such a system. To begin, an assymmetric hollow fiber membrane was constructed using PIM-1 (Polymer of Intrinsic Microporosity), which has a very high permeability. Calcium carbonate was generated continuously inside the module by supplying CO2 gas and a calcium-containing model solution in the opposite direction. We did quantitative assessments of the module's performance and potential issues such as scale creation. Based on the preceding results, calcium carbonate was produced utilizing a commercial membrane contactor system using calcium-containing complex solution generated from real industrial by-products. We investigated the association between module operating conditions and calcium carbonate production behavior. Cost-effective and dependable large-scale CCU can be obtained by utilizing both CO2 and industrial waste concurrently. |