期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 783, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2021.147103
关键词
Waste recycling; Aerobic compost; Ammonia; Greenhouse gas; Mitigation technology
资金
- National Key Research and Development Program of China [2018YFD0800100]
- Youth Fund of Hubei Academy of Agricultural Sciences [2021NKYJJ08]
- Youth Fund of Institute of Plant Protection and Soil Fertilizer, Hubei Academyof Agricultural Sciences [2021ZTSQJ11]
- Open Project of Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs of the People's Republic of China [KLFAW201804]
Composting is a reliable method for recycling manure in sustainable agriculture, but poor management can lead to decreased quality and negative environmental impacts. Meta-analysis results show that controlling feedstock properties, composting process conditions, and applying additives in combination is an effective way to reduce C and N losses, produce high-quality compost products, and minimize environmental pollution.
Composting is a reliable way to recycle manure for use on croplands in sustainable agriculture. Poor management of the composting process can result in a decrease in the final compost quality and negative environmental impacts. Optimization technologies during composting have varied effects on the mitigation of carbon (C) and nitrogen (N) losses. To determine the feasibility and effectiveness of mitigation options, a meta-analysis was performed based on 68 studies in which C and/or N losses were investigated during pig manure composting. The results indicated that 48.7% of the total C (TC) was lost with 34.8% as CO2-C and 0.9% as CH4-C. and 27.5% of the total N (TN) was lost with 17.1% as NH3-N and 1.5% as N2O-N. The composting method and bulking agent type obviously influenced the C and N losses. CO2-C and CH4-C emission was significantly influenced by the initial C/N ratio and moisture, respectively. At the same time, NH3-N and N2O-N emissions were remarkably affected by the initial pH and composting duration, respectively. The results of the meta-analysis showed that TC and TN losses were reduced by 12.4% and 275%, respectively. Controlling feedstock, including the C/N ratio and moisture, could be regarded as N conservation technology. Controlling aeration, including turning frequency and ventilation rate, would be reliable in reducing greenhouse gas emissions. Applying additives, especially biochar and superphosphate, was found to be an effective method for synergistically mitigating C and N losses. Therefore, the production of high-quality compost products and minimization of environmental pollution will be achieved by a combination of adjusting the initial substrate properties, controlling the composting process conditions and applying additives. (C) 2021 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据