70 -4 T,--- "-- 0 SSng- p -- SM-s - - J II Se Mix-Des -1.6 -1.2 -0.- -0.+ 0 C.4 0.S 1.z 1.6 Log solution concentration -1 .5 i ,. , Lo| sot Mix-Adsc t ao n Log solution concentration Figure 5-6. PCP sorption isotherms on soil with sludge.