Four kinds of organic bentonite were synthesized by using surface active agent--- CTMAB, DTMAB, DPB, CPB, on the basis of fully understanding characters of bentonite. We want to know how do organic molecules arrayed between the bentonite levels, as well as, how does it affect the space of different levels. Simulate experiments were carried out to study how does surface active agent and its amount influence synthesized bentonite’s capability of adsorbing organic pollutant, such as p-nitrophenol, t...