Fig. 4. Proportion of NO3 as percentage of total mineralized N in leachate after each incubation period at (A) 10 and (B) 20°C. AnM, anaerobically digested municipal biosolids; AeM, aerobically digested municipal biosolids; PP1 and PP2, two pulp and paper industrial biosolids from two aerated wastewater stabilization lagoons.