Influence of FeONPs amendment on nitrogen conservation and microbial community succession during composting of agricultural waste: Relative contributions of ammonia-oxidizing bacteria and archaea to nitrogen conservation

Lihua Zhang; Haoran Dong; Jiachao Zhang; Yaoning Chen; Guangming Zeng; Yujie Yuan; Weicheng Cao; Wei Fang; Kunjie Hou; Bin Wang; Long Li

doi:10.1016/j.biortech.2019.121463

Influence of FeONPs amendment on nitrogen conservation and microbial community succession during composting of agricultural waste: Relative contributions of ammonia-oxidizing bacteria and archaea to nitrogen conservation

Bioresour Technol. 2019 Sep:287:121463. doi: 10.1016/j.biortech.2019.121463. Epub 2019 May 13.

Authors

Lihua Zhang¹, Haoran Dong¹, Jiachao Zhang², Yaoning Chen¹, Guangming Zeng³, Yujie Yuan⁴, Weicheng Cao¹, Wei Fang¹, Kunjie Hou¹, Bin Wang¹, Long Li¹

Affiliations

¹ College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
² College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China.
³ College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China. Electronic address: zgming@hnu.edu.cn.
⁴ Institute of Hydroecology, Ministry of Water Resources and Chinese Academy of Sciences, Wuhan 430079, PR China.

PMID: 31121445
DOI: 10.1016/j.biortech.2019.121463

Abstract

Composting amended with iron oxide nanoparticles (FeONPs, α-Fe₂O₃ and Fe₃O₄ NPs) were conducted to study the impacts of FeONPs on nitrogen conservation and microbial community. It was found that amendment of FeONPs, especially α-Fe₂O₃ NPs, reduced total nitrogen (TN) loss, and reserved more NH₄⁺-N and mineral N. Pearson correlation analysis revealed that decrease of ammonia-oxidizing bacteria (AOB) in FeONPs treatments played more important role than ammonia-oxidizing archaea (AOA) in reserving more NH₄⁺-N and mineral N, and reducing TN loss. Bacterial community composition at phylum level did not shift with addition of FeONPs. Firmicutes, Actinobacteria, and Proteobacteria were the three most dominant phyla in all treatments. Overall, this study provides a method to reduce TN loss and improve mineral N reservation during composting, and gives a deep insight into the role of AOB and AOA in nitrogen transformation.

Keywords: AOB and AOA; Composting; FeONPs; Microbial community; Nitrogen conservation.

MeSH terms

Ammonia
Archaea
Bacteria
Composting*
Microbiota*
Nitrogen
Oxidation-Reduction
Soil
Soil Microbiology

Substances

Soil
Ammonia
Nitrogen