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Liu, Shuai
- Nitrogen Transformation and Loss during the Composting Process of Livestock and Poultry Manure with or without Bio-Fermentation Agent
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Authors
Shuai Liu
1,
Xudong Wang
1
Affiliations
1 College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi, 712100, CN
1 College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi, 712100, CN
Source
Nature Environment and Pollution Technology, Vol 16, No 4 (2017), Pagination: 1003-1010Abstract
The composting experiment using chicken manure, pig manure, fungus chaff and biogas residue as mixed media was conducted for 30 days with or without amendment of the bio-fermentation agent. The nitrogen transformation, changes of compost temperature and organic carbon in the mixture were investigated during the whole process. The results demonstrated that addition of the bio-fermentation agent improved the compost temperature, prolonged the high-temperature stage, expedited the process of organic carbon decomposition and lowered the C/N ratio. The amendment of bio-fermentation agent was beneficial to the transformation of organic nitrogen to ammonium (NH4+-N) in the early composting stage (the first 9 d), but to the form of nitrate (NO3--N) afterwards. Compared to the non-bio-fermentation agent treatment, the composting process was reduced by 9 d to maturity. The acid hydrolysis organic nitrogen (THN) was increased with the addition of bio-fermentation agent during the early composting period by increasing the hydrolysis of the protein. The formation of amino acid nitrogen (AAN) and amide nitrogen (AN) in the compost, with amendment of bio-fermentation agent in early stage, revealed the reason why the mineralization of organic N was fast during the composting process. Although the addition of fermentation agent accelerated the organic nitrogen to transform into available forms, it did not cause massive N loss in the whole composting process.Keywords
Livestock and Poultry Manure, Composting, Nitrogen Transformation, Bio-Fermentation Agent.Full Text
- Characteristics of Aniline and Nitrobenzene Adsorption on Single-Walled, Multi-Walled and Graphitized Multi-Walled Carbon Nanotubes
Abstract Views :220 |
PDF Views:73
Authors
Shuai Liu
1,
Yifei Zha
1,
Yuanyuan Wang
1,
Qi Wei
1,
Ying Zhang
1,
Yuankai Zhang
1,
Hongchen Wang
1,
Lu Qi
1,
Xianglong Xu
1
Affiliations
1 School of Environment and Natural Resources, Renmin University of China, No. 59 Zhongguancun Street, Beijing 100872, CN
1 School of Environment and Natural Resources, Renmin University of China, No. 59 Zhongguancun Street, Beijing 100872, CN
Source
Current Science, Vol 117, No 4 (2019), Pagination: 683-689Abstract
Herein, we assess the relative potential of singlewalled, multi-walled and graphitized multi-walled carbon nanotubes (CNTs) for the adsorptive removal of organic species using aniline and nitrobenzene as model aromatic contaminants. The obtained results reveal that the adsorption behaviour of aromatic organics is significantly affected by their functional groups (especially when functionalized CNTs are used as adsorbent), providing valuable guidance for adsorption- based removal of organic contaminants from the environment.Keywords
Adsorption, Aromatic Organics, Carbon Nanotubes, Relative Potential.Full Text
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