Guidelines for Techno-Economic Analysis of Adsorption Processes

Techno-economic analyses (TEAs) of CO2 capture technologies have risen in popularity, due to growing interest in meeting CO2 emissions reduction targets. Adsorption processes are one of the technologies proposed for CO2 capture, and although difficult, standardization of TEAs for adsorption should be attempted. The reason is that TEAs are often referred to as input data to other forms of modeling, to guide policy, and to act as summaries for those unfamiliar with adsorption processes. Herein, we discuss the aspects that should be considered when conducting TEAs for CO2 adsorption processes, and we present the implications of choices made at the TEA stage and offer guidance on best practice. our aim is to make TEAs of adsorption processes widely accessible to the adsorption community, and more generally to communities engaged in the evaluation of CCS technologies.

Green Technological Development and Deployment in the Association of Southeast Asian Economies (ASEAN)—At Crossroads or Roundabout?

Southeast Asia faces one of the fastest growths in electricity demand in the world, driven by increasing incomes, urbanization and industrialization. Development and deployment of green energy technologies offer a natural conduit to meet the growing electricity needs of the Association of Southeast Asian Economies (ASEAN) region while also serving as a viable strategy to adapt to climate change. The aim of this study is to formulate the policy lessons for the ASEAN economies and governments in facilitating the development and deployment of green technologies and alternatives energy options based on a specific case review of the ASEAN. The ASEAN economic region is prioritizing sustainable economic growth while minimizing the regional impacts of climate change through decarbonization. The study undertakes a case-specific analysis in reviewing green energy deployment in the context of green growth and energy transition using secondary data sources and discusses the current status and future options of renewable energy development in the ASEAN. We find that carbon capture and storage (CCS) technologies will allow the ASEAN to continue to use fossil fuels while achieving sustainable economic growth as coal demand increases in the region. The deployment of CCS technologies will also act as an enabler of hydrogen energy as a green energy solution in the region in the longer term. Boosting public acceptance to nuclear energy, implementing energy efficiency improvement policies and eliminating fossil fuels consumption subsidies are feasible short-term and medium-term policies. Increasing both the public and private sector energy investments and development of CCS technologies in the longer term are necessary complementary policies to maximize the benefits of greater deployment of renewable energy sources in the region and combat climate change.

Development of Educational Tools in Russia to Accumulate Knowledge about Sequestration Technologies

The latest technologies for climate change mitigation are carbon capture and storage (CCS). Some countries are developing CCS projects, and they are currently at different stages of deployment. Despite the signing of international agreements on climate change mitigation, Russia does not ensure the development of CCS technologies and their implementation. Given the long-term development of such technologies, its main goal is to raise public awareness of carbon capture, storage and use.Currently, the problem of creating public awareness about CCS technologies has gained a huge momentum in the Russian Federation. A high level of awareness and approval of such projects will encourage the deployment of CCS projects in the Russian Federation.The purpose of this article is to study the level of awareness of the Russian society regarding CCS technologies, as well as to develop a multi-level complex system of measures to ensure that such awareness is raised in the near future.To achieve this goal, we used such methods as research of secondary and primary sources of information on this topic. In addition to analyzing the information of scientific publications on the subject under study, both secondary (content analysis of printed media materials, video hosting, social networks) and primary research (personal survey, experiment) were conducted.As the most important results, we can highlight the obtained structure of popularity of environmental information sources among students of two universities in Saint Petersburg. In addition, it has been proved that currently in the Russian Federation, insufficient attention is paid to the popularization of carbon sequestration technologies. the analysis of the dissemination of information about CCS technologies in social networks, school textbooks, Newspapers, and video hosting services was carried out. Content analysis of existing social groups and videos in social networks is presented.

Carbon Dioxide (CO2) Adsorption Behaviour and Its Relationship with Nano-Structure in an Organic-Rich Shale: A Case Study of the Longmaxi Shale in Southeast Chongqing

Carbon capture and storage (CCS) technologies in shale reservoirs have attracted increasing interest in recent years. To study the CO2 adsorption behaviour in the Longmaxi shale, isothermal adsorption experiments, scanning electron microscopy (SEM) and other techniques were employed in this study. The results show that when the pressure is less than 7.37 MPa, the Langmuir model fits well with the experimental CO2 adsorption data in the shale. In contrast, when the pressure is greater than 7.37 MPa, the D+R-K model fits better with the experimental data. From low pressure to high pressure (>20 MPa), the CO2 adsorption isothermal curves can be divided into four stages: rapid adsorption stage, slow adsorption stage, linear decreasing stage and slightly decreasing stage. With increases in temperature, the CO2 adsorption capacity decreases as expected. In addition, the effects of the Longmaxi shale nano-structure on the CO2 adsorption behaviour were also investigated. It was found that organic matter has a greater influence than clay and quartz on the CO2 adsorption behaviour. Based on the SEM observations, large numbers of nanoscale organic pores were found in the shale samples, and these nanoscale organic pores may control the CO2 adsorption behaviour in organic-rich Longmaxi shale. With increasing total organic carbon (TOC) content, the CO2 adsorption capacity increases linearly. In this study, the characteristics of the CO2 adsorption in shale and its relationship with the shale nano-structure were studied, which may be helpful for understanding CCS technologies and their application in enhanced shale gas recovery.

Guanidine as a strong CO2 adsorbent: A DFT study on cooperative CO2 adsorption

Among the various carbon capture and storage (CCS) technologies, direct air capture (DAC) of CO2 by engineered chemical reactions on suitable adsorbents has attained more attention in recent times. Guanidine...