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- Title
Exogenous enzyme amendment accelerates maturity and changes microflora succession in horse and wildlife animal manure co-composting.
- Authors
Du, Guilin; Feng, Wenwen; Cai, Hanbin; Ma, Zhiguo; Liu, Xiangcen; Yuan, Chenyang; Shi, Jiping; Zhang, Baoguo
- Abstract
Composting has been a rational method to dispose of horse or wildlife animal manures, especially in the developed cities with horse clubs and wildlife parks. However, few studies have focused on the mechanism and improvement methods for composting the horse or wildlife animal manures. In this study, we investigated the effect of exogenous compound enzymes on thermophilic composting, which could potentially support the management of horse and wildlife animal manures. With the presence of exogenous enzymes, the duration of high temperature (> 60 °C) was significantly prolonged (p < 0.05), and the germination index was significantly improved (p < 0.05). More-efficient improvement of composting maturity was associated with the addition of that exogenous enzyme that might influence microflora succession and the interaction among microorganic communities, especially fungal, during the composting process. Furthermore, redundancy and canonical correspondence analyses indicated that the C/N ratio, temperature, and germination index were significant variations to influence bacterial communities (p < 0.05). The dominant Flavobacterium, Thermopolyspora, Thermomonospora, and Chaetomium and Saccobolus could play an essential role in carbohydrate and phytotoxin degradation, while Thermobispora and norank_f_Limnochordaceae could lead to temperature rising.
- Subjects
HORSES; WILDLIFE management; COMPOSTING; ENZYMES; BACTERIAL communities; HIGH temperatures
- Publication
Environmental Science & Pollution Research, 2021, Vol 28, Issue 17, p21610
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-020-11568-4