{"title":"A Parametric Study of CO 2 Absorption from CO 2/Air Mixture using Packed Column","authors":"M. Mesfer, M. Danish, V. Parthasarthy","doi":"10.2139/ssrn.3721554","DOIUrl":"https://doi.org/10.2139/ssrn.3721554","url":null,"abstract":"In the current work, the packed bed CO2 absorption from a mixture of air/CO2 using water as solvent has been investigated. The initial CO2 level, solvent flow and air flow rate are the operating parameters considered for the analyzing the influence on CO2 absorption rate and absorption flux. The CO2 absorption rate and CO2 flux strongly depend on the CO2 level in the feed, CO2 rate, solvent rate and the air rate and varies directly with operating conditions. It is observed that rate of absorption increases with increased CO2 % level in the feed mixture and solvent rate. The maximal absorption rate and flux of 5.16 mmol/min and 10.1 x 102 mmol/min.m2 were determined under constant conditions of F2= 30 L/min, Ci= 40 % CO2 and F1= 3 L/min. The minimal rate of absorption of 1.53 mmol/min was obtained at CO2 level of 10% with air flow 30 L/min. The findings may be used to optimize steady-state economical absorption of CO2 from a mixture of CO2/air using packed column.","PeriodicalId":245050,"journal":{"name":"EarthSciRN: Atmospheric Chemistry (Topic)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132480656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Exploring OECD SDGs Pilot City's 50-Year Time Series Data and Its Environmental Kuznets Curves","authors":"Q. Vuong, T. Ho, N. M. Hoang","doi":"10.2139/ssrn.3433595","DOIUrl":"https://doi.org/10.2139/ssrn.3433595","url":null,"abstract":"Can green growth policies help protect the environment while keeping the industry growing and infrastructure expanding? This study applies Auto-Regressive Distributed Lag (ARDL) method on the 50-years’ time series data, from 1967 to 2015, of Kitakyushu City, Japan, and found mixed evidence for Environmental Kuznets Curve (EKC) hypothesis. The analyses of NO2, Ox, falling dust particle, and SOx highlight a trilemma among the growth of industrial firms, infrastructure development, and reducing air-quality degradation. Nevertheless, for CO emission per capita, its logarithm has a general declining trend when plotted against both average firm size growth and paved road area expansion. This finding sheds light on the possibility of developing a regulatory framework that can harmonize a low-carbon society with industrial and infrastructure development.","PeriodicalId":245050,"journal":{"name":"EarthSciRN: Atmospheric Chemistry (Topic)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127285902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}