Modelling pH evolution in Boom Clay porewater during in situ heating
During an in situ thermal perturbation on a clayey rock, CO2 production by decomposition of immature, labile kerogen can take place and acidify the porewater. Calculation of pH changes during five years of heating in the CERBERUS project (a demonstration test to study the near-field effects of a high level radioactive waste canister in an argillaceous formation) is carried out, using a coupled production-diffusion model, combined with or without chemical reaction with calcite. Re-equilibration time of the water-rock system is evaluated and perspectives are given for further developments in the frame of research for disposal of heat-emitting waste in a clay formation.
H.Pitsch C.Beaucaire F.Behar F.Lorant I.Deniau C.Largeau P.De Cannière M.Van Geet
IRSN, DESTQ/DICST, Fontenay aux Roses, France CEA, DEN/DPC/SECR/L3MR, Gif sur Yvette, France IFP, Geology-Geochemistry division, Rueil-Malmaison, France LCBOP, CNRS UMR 7618, ENSCP, Paris Cedex, France SCK.CEN, Waste and Disposal, Mol, Belgium
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
381-384
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）