Abstract: Carbon capture and
storage (CCS) can be considered as one of climate change mitigation efforts,
through capturing and injecting of CO2 in underground formations for reducing
CO2 emissions. CO2 injection in coalbed methane (CBM) reservoir has potentially
attracted for reducing CO2 emissions and enhancing coalbed methane (ECBM)
recovery. Diffusion and sorption are phenomenon of gas in the matrix on CO2
injection in CBM reservoir. The objectives of the research are focused on
understanding of diffusion and sorption of gas in the coal matrix with mathematical
model and estimating of CO2 storage in coalbed and CH4 recovery. In this
research, mathematical model is developed to describe the mechanism in the
matrix on ECBM process. Mathematical model, which have been valid, is simulated
in various variables, i.e. macroprosity (0,001; 0,005; 0,01), pressure (1 MPa,
3 MPa, and 6 MPa), temperature (305 K, 423 K, and 573 K), and initial fraction
of CO2 (0,05; 0,1; 0,3; 0,5). The results of this research show that
preferential sequestration of CO2 and preferential recovery of CH4 in the
surface of micropore on macroporosity 0,001, pressure 1 MPa, temperature 305 K,
and inital fraction CO2 0,5 conditions are 0,9936 and 0,0064.
Keywords: carbon capture and
storage (CCS); coalbed methane (CBM); enhanced coalbed methane (ECBM);
diffusion; adsorption; CO2 fraction; CH4 fraction
Penulis: Ade Nurisman, Retno
Gumilang Dewi1, Ucok WR Siagian
Kode Jurnal: jpkimiadd130115
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