@inproceedings{scholars7462,
           title = {Description of Carbon Dioxide Adsorption and Desorption onto Malaysian Coals under Subcritical Condition},
             doi = {10.1016/j.proeng.2016.06.521},
            note = {cited By 32; Conference of 4th International Conference on Process Engineering and Advanced Materials, ICPEAM 2016 ; Conference Date: 15 August 2016 Through 17 August 2016; Conference Code:131138},
          volume = {148},
           pages = {600--608},
         journal = {Procedia Engineering},
       publisher = {Elsevier Ltd},
            year = {2016},
          author = {Abunowara, M. and Bustam, M. A. and Sufian, S. and Eldemerdash, U.},
            issn = {18777058},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85013947265&doi=10.1016\%2fj.proeng.2016.06.521&partnerID=40&md5=51df6f44f5f20e61eee4f65a71b49c84},
        keywords = {Adsorption; Adsorption isotherms; Carbon; Coal; Coal deposits; Desorption; Gas adsorption; Gas emissions; Greenhouse gases; Hysteresis; Microporosity; Process engineering; Temperature, Adsorption and desorption isotherms; Adsorption and desorptions; Adsorption capacities; Carbon dioxide adsorption; Equilibrium adsorption; hystersis; isother medols; Sub-critical condition, Carbon dioxide},
        abstract = {Coal bed seams have been considered as promising sequestration reservoirs for CO2 disposal to mitigate the green house gas emissions. The CO2 adsorption and desorption attributes of CO2 on dry Malaysian coals (Sarawak, volatile bituminous) were performed using a sorptomat apparatus (ASAP 2010, Micromeritics, USA) and BELSORP-mini II machine (BEL Japan, Inc.) at 273 K, 298 K and pressure up to 1 bar. The CO2 adsorption was favourable at low temperature and dry coal conditions. However, S3 and S4 coals have the highest adsorption capacity by 0.71 and 0.73 mmol/g respectively. According to IUPAC classification of adsorption isotherms, CO2 adsorption isotherm of all coal samples follow type I which most probably describe the adsorption limited to a few molecular layers (micropores). The results of adsorption and desorption isotherm demonstrate a positive hysteresis in all coal samples. The S1 coal and S2 coal have the highest hysteresis between adsorption and desorption isotherm compared to S3 coal and S4 coal. According to hysteresis classifications, the hysteresis during CO2 adsorption and desorption process for all coal samples follows type H3 which describes micropores and mesopores. The evaluation of the equilibrium adsorption data where fitted using by Langmuir, Freundlich, Redlich-Peterson, Koble-Corrigan, Toth and Sips models. Toth model provided the best fit for all adsorption experimental data that predicting all coals having heterogeneous surface properties.}
}