Characterization of dairy cattle manure/wallboard paper compost mixture.
The aim of this research was to evaluate the use of manufacturing wallboard paper scraps as an alternative bulking agent for dairy cattle manure composting. The characteristics of the composting process were studied based on the changes in physico-chemical parameters and final compost quality. Composting of dairy cattle manure with wallboard paper was performed in a 481-L cylindrical reactor with vacuum-type aeration. Rapid degradation of organic matter was observed during the thermophilic stage of composting due to high microbial activity. High temperature and alkaline pH conditions promoted intense ammonia emission during the early stage of composting. The number of mesophilic and thermophilic microorganisms were found to be affected by changes in temperature at different composting stages. The total nitrogen (N), phosphorus (P), potassium (K), and sodium (Na) concentrations of the mixture did not change significantly after 28days of composting. However, the presence of gypsum in the paper scraps increased the calcium content of the final compost. The wallboard paper had no phyto-inhibitory effects as shown by high germination index of final compost (GI=99%).
Saludes
Ronaldo B
RB
United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo 183-8509, Japan. rbsaludes@env.mine.utsunomiya-u.ac.jp
Iwabuchi
Kazunori
K
Miyatake
Fumihito
F
Abe
Yoshiyuki
Y
Honda
Yoshifumi
Y
D000818:Animals; D002417:Cattle; D015169:Colony Count, Microbial; D003612:Dairying; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D008372:Manure; D010209:Paper; D012987:Soil
D008372:Manure; D012987:Soil