Composting is an effective way to realize the treatment and recycling of livestock
manure. However, traditional composting process has the problems of slow temperature rising, poor
dehydration effect and serious
nitrogen loss. Composting experiments of pig
manure were carried out to investigate the influence of different rates of bamboo
biochar addition on the temperature rising speed,
dehydration effect and
nitrogen loss during the composting process. The results showed that the addition of bamboo
biochar could shorten the temperature rising time of the pile by 24-48 h, increase the
dehydration rate by 13.6%-21.4%, and prolong the lasting time of the thermophilic phase by 216-264 h. The NH(4+)-N, NO(3-)-N, and total
nitrogen contents in the pile were higher under the treatments with bamboo
biochar amendment than under the control, and moreover, the nitrogen fixation percentage increased by 28.3%-65.4% as compared to the control.