The effect of multi-walled carbon nanotubes on soil microbial activity

Chung, Haegeun; Son, Yowhan; Yoon, Tae Kyung; Kim, Seungwook; Kim, Woong

doi:10.1016/j.ecoenv.2011.01.004

Cited by 165 publications

(103 citation statements)

References 40 publications

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“…TiO 2 and ZnO nanoparticles significantly decreased protease, catalase, and peroxidase activities in wheat soil, which might be due to dissolved ions in soil (Du et al 2011). b-Glucosidase and phosphatase activities were inhibited in sandy loam treated with multi-walled carbon nanotubes (Chung et al 2011). …”

Section: Resultsmentioning

confidence: 99%

The Effect of Metal Oxide Nanoparticles on Functional Bacteria and Metabolic Profiles in Agricultural Soil

Chai

Yao

Sun

et al. 2015

Bull Environ Contam Toxicol

148

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A significant knowledge gap in nanotechnology is the absence of standardized protocols for examining the effect of engineered nanoparticles on soil microorganisms. In this study, agricultural soil was exposed to ZnO, SiO2, TiO2 and CeO2 nanoparticles at 1 mg g(-1). The toxicity effect was evaluated by thermal metabolism, the abundance of functional bacteria and enzymatic activity. ZnO and CeO2 nanoparticles were observed to hinder thermogenic metabolism, reduce numbers of soil Azotobacter, P-solubilizing and K-solubilizing bacteria and inhibit enzymatic activities. TiO2 nanoparticles reduced the abundance of functional bacteria and enzymatic activity. SiO2 nanoparticles slightly boosted the soil microbial activity. Pearson's correlation analysis showed that thermodynamic parameters had a strong correlation with abundance of functional bacteria and enzymatic activity. These findings demonstrated that the combined approach of monitoring thermal metabolism, functional bacteria and enzymatic activity is feasible for testing the ecotoxicity of nanoparticles on agricultural soil.

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Section: Resultsmentioning

confidence: 99%

The Effect of Metal Oxide Nanoparticles on Functional Bacteria and Metabolic Profiles in Agricultural Soil

Chai

Yao

Sun

et al. 2015

Bull Environ Contam Toxicol

148

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“…20 However, MWCNTs at high concentration (≥5 mg g −1 ) altered the relative abundance of bacterial taxa in the community, reduced soil microbial biomass, and repressed enzyme activity. 18,20 Soil Fungal Community. We also examined treatment effects on soil fungal communities, which are generally more tolerant than bacteria to desiccation 53 and which have been studied for their potential to biodegrade ECNMs.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Long-Term Effects of Multiwalled Carbon Nanotubes and Graphene on Microbial Communities in Dry Soil

Priester²,

Mortimer

et al. 2016

Environ. Sci. Technol.

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Little is known about the long-term effects of engineered carbonaceous nanomaterials (ECNMs) on soil microbial communities, especially when compared to possible effects of natural or industrial carbonaceous materials. To address these issues, we exposed dry grassland soil for 1 year to 1 mg g–1 of either natural nanostructured material (biochar), industrial carbon black, three types of multiwalled carbon nanotubes (MWCNTs), or graphene. Soil microbial biomass was assessed by substrate induced respiration and by extractable DNA. Bacterial and fungal communities were examined by terminal restriction fragment length polymorphism (T-RFLP). Microbial activity was assessed by soil basal respiration. At day 0, there was no treatment effect on soil DNA or T-RFLP profiles, indicating negligible interference between the amended materials and the methods for DNA extraction, quantification, and community analysis. After a 1-year exposure, compared to the no amendment control, some treatments reduced soil DNA (e.g., biochar, all three MWCNT types, and graphene; P < 0.05) and altered bacterial communities (e.g., biochar, carbon black, narrow MWCNTs, and graphene); however, there were no significant differences across the amended treatments. These findings suggest that ECNMs may moderately affect dry soil microbial communities but that the effects are similar to those from natural and industrial carbonaceous materials, even after 1-year exposure.

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“…However, the majority of these studies seem to conclude that CNTs decreased soil microbial activity [71e74]. Enzymatic activities of soil bacteria were repressed by both MWCNTs and SWCNTs: MWCNTs decreased enzymatic activities of two natural soils (sandy loam and loamy sand soils) at 500 mg/kg [71]. Likewise Jin et al [72] found that SWCNTs lowered significantly enzyme activities of a natural sandy loam soil at concentrations between 30 and 300 mg/kg.…”

Section: Fate and Impacts Of Carbon Nanotubes On Soil And Related Orgmentioning

confidence: 99%

Carbon nanotubes: Impacts and behaviour in the terrestrial ecosystem - A review

Liné

Larue

Flahaut

2017

Carbon

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The effect of multi-walled carbon nanotubes on soil microbial activity

Cited by 165 publications

References 40 publications

The Effect of Metal Oxide Nanoparticles on Functional Bacteria and Metabolic Profiles in Agricultural Soil

The Effect of Metal Oxide Nanoparticles on Functional Bacteria and Metabolic Profiles in Agricultural Soil

Long-Term Effects of Multiwalled Carbon Nanotubes and Graphene on Microbial Communities in Dry Soil

Carbon nanotubes: Impacts and behaviour in the terrestrial ecosystem - A review

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