Premium
Release of Fixed Potassium as a Diffusion Controlled Process
Author(s) -
Mortland M. M.,
Ellis Boyd
Publication year - 1959
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1959.03615995002300050019x
Subject(s) - diffusion , potassium , vermiculite , activation energy , diffusion process , chemistry , limiting , value (mathematics) , process (computing) , chemical engineering , thermodynamics , materials science , mathematics , physics , organic chemistry , computer science , statistics , composite material , mechanical engineering , knowledge management , innovation diffusion , engineering , operating system
Rate of release of fixed K from vermiculite with 0.1 N NaCl was studied to attempt to characterize the ratelimiting process. Of the processes considered, film diffusion satisfied most criteria as rate limiting. The activation energy of the release of K by 0.1 N NaCl in the system studied was about 3,550 cal./mole, a value of the order frequently obtained for diffusion processes.