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Impact of carbon nanomaterials on microbial activity in soil

Research output: Contribution to journalJournal article

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<mark>Journal publication date</mark>07/2015
<mark>Journal</mark>Soil Biology and Biochemistry
Volume86
Number of pages9
Pages (from-to)172-180
Publication statusPublished
Early online date13/04/15
Original languageEnglish

Abstract

In this study, effects of an increase in concentration of ftillerene-C-60, single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs) or fullerene soot (FS) on overall microbial activity was investigated over a 21 d incubation period. Microbial utilisation of C-14-glucose and uptake of C-14-glucose into the microbial biomass was investigated. For CNM-amended soils, greater extents of C-14-glucose mineralisation were found in the C-60-amended soils compared to MWCNT-, SWCNT- or FS-amended soils. In addition, the 100 and 1000 mg kg(-1) were consistently found to have higher extents of mineralisation in C-60, MWCNT, SWCNT or FS-amended soils, respectively. Further, the incorporation of C-14-glucose into the microbial biomass declined slightly with an increase in concentration in the amended soils, but no consistent pattern was observed. As a result, the biophysical quotient (BQ) increased significantly (P