Can biochar regulate the fate of heavy metals (Cu and Zn) resistant bacteria community during the poultry manure composting?

• In this study, the influence of coconut shell biochar addition (CSB) on heavy metals (Cu and Zn) resistance bacterial fate and there correlation with physicochemical parameters were evaluated during poultry manure composting. High-throughput sequencing was carried out on five treatments, namely T1−T5, where T2 to T5 were supplemented with 2.5%, 5%, 7.5% and 10% CSB, while T1 was used as control for the comparison. The results of HMRB indicated that the relative abundance of major potential bacterial host altered were Firmicutes (52.88–14.32%), Actinobacteria (35.20–4.99%), Bacteroidetes (0.05–15.07%) and Proteobacteria (0.01–20.28%) with elevated biochar concentration (0%−10%). Beta and alpha diversity as well as network analysis illustrated composting micro-environmental ecology with exogenous additive biochar to remarkably affect the dominant resistant bacterial community distribution by adjusting the interacting between driving environmental parameters with potential host bacterial in composting. Ultimately, the amendment of 7.5% CSB into poultry manure composting was able to significantly reduce the HMRB abundance, improve the composting efficiency and end product quality. 

Ämnesord

NATURVETENSKAP  -- Biologi -- Mikrobiologi (hsv//swe)

NATURAL SCIENCES  -- Biological Sciences -- Microbiology (hsv//eng)

Nyckelord

Coconut shell biochar

Composting

Heavy metals resistant bacterial

Physicochemical properties

Poultry manure

Bacteria

Copper compounds

Fertilizers

Heavy metals

Zinc compounds

Actinobacteria

Bacterial community

Coconut shells

Environmental parameter

High-throughput sequencing

Physicochemical parameters

Relative abundance

Resistant bacteria

Manures

charcoal

copper

zinc

biochar

heavy metal

bacterium

environmental fate

manure

microbial community

physicochemical property

poultry

Article

Bacteroidetes

concentration (parameter)

controlled study

correlation analysis

Firmicutes

hierarchical clustering

high throughput sequencing

microbial diversity

nonhuman

nutshell (structure)

physical chemistry

product quality

Proteobacteria

animal

genetics

soil

Bacteria (microorganisms)

Animals

Metals

Heavy

Resource Recovery

Resursåtervinning

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)