Nutrient transformations during composting of pig manure with bentonite
Document Type
Article
Publication Date
10-1-2012
Abstract
This work aimed to evaluate the influence of different amounts of bentonite on nutrients transformation during pig manure composting process. The results showed that bentonite had no significant effects on compost temperature and pH changes. While, EC, moisture, OM, TN and NO3--N were notably influenced by BT addition. The adding of BT could facilitate OM degradation, increase TKN content and decrease the C/N ratio. Increasing the proportion of bentonite in pig manure compost to reduce extractable heavy metal content is feasible. However, potherb mustard seed GI decreased with the proportion of added bentonite increasing. The results suggest that a proportion of less than 2.5% bentonite is recommended for addition to pig manure compost, and examining the additive ratio in a comprehensive waste composting project is a worthwhile direction for future research. © 2012 Elsevier Ltd.
Publication Source (Journal or Book title)
Bioresource Technology
First Page
362
Last Page
368
Recommended Citation
Li, R., Wang, J., Zhang, Z., Shen, F., Zhang, G., Qin, R., Li, X., & Xiao, R. (2012). Nutrient transformations during composting of pig manure with bentonite. Bioresource Technology, 121, 362-368. https://doi.org/10.1016/j.biortech.2012.06.065