Response of methane production via propionate oxidation to carboxylated multiwalled carbon nanotubes in paddy soil enrichments.

ABSTRACT: Carboxylated multiwalled carbon nanotubes (MWCNTs-COOH) have become a growing concern in terms of their fate and toxicity in aqueous environments. Methane (CH₄) is a major product of organic matter degradation in waterlogged environments. In this study, we determined the effect of MWCNTs-COOH on the production of CH₄ from propionate oxidation in paddy soil enrichments. The results showed that the methanogenesis from propionate degradation was accelerated in the presence of MWCNTs-COOH. In addition, the rates of CH₄ production and propionate degradation increased with increasing concentrations of MWCNTs-COOH. Scanning electron microscopy (SEM) observations showed that the cells were intact and maintained their structure in the presence of MWCNTs-COOH. In add

SUBMITTER: Zhang J 

PROVIDER: S-EPMC5768162 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature