The addition of BC or BC + BV into PM composting materials
influenced temperature, pH and GI changes. It shortened the time
needed to enter the thermophilic phase, decreased pH at the thermophilic
phase, and increased GI of the composting material. The
addition of BC or BC + BV reduced TKN loss and mobility of Cu
and Zn in PM composting materials. TKN loss was reduced by
74% in the 3% BC + 0.4% BV treatment. The mobility of Cu and Zn
was reduced by 35% and 39% in the 9% BC treatment. These results
indicate that the addition of BC or BC + BV into PM composting
materials is an effective method to reduce negative effects of PM
composting