Role of biogenic sulfide in attenuating zinc oxide and copper nanoparticle toxicity to acetoclastic methanogenesis

Jorge Gonzalez-Estrella; Daniel Puyol; Reyes Sierra-Alvarez; Jim A. Field

doi:10.1016/j.jhazmat.2014.10.030

Role of biogenic sulfide in attenuating zinc oxide and copper nanoparticle toxicity to acetoclastic methanogenesis

Jorge Gonzalez-Estrella, Daniel Puyol, Reyes Sierra-Alvarez, Jim A. Field

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

Soluble ions released by zinc oxide (ZnO) and copper (Cu⁰) nanoparticles (NPs) have been associated with toxicity to methanogens. This study evaluated the role of biogenic sulfide in attenuating ZnO and Cu⁰ NP toxicity to methanogens. Short- and long-term batch experiments were conducted to explore ZnO and Cu⁰ NPs toxicity to acetoclastic methanogens in sulfate-containing (0.4mM) and sulfate-free conditions. ZnO and Cu⁰ were respectively 14 and 7-fold less toxic in sulfate-containing than in sulfate-free assays as indicated by inhibitory constants (K_i). The K_i with respect to residual soluble metal indicated that soluble metal was well correlated with toxicity irrespective of the metal ion source or presence of biogenic sulfide. Long-term assays indicated that ZnO and Cu⁰ NPs caused different effects on methanogens. ZnO NPs without protection of sulfide caused a chronic effect, whereas Cu⁰ NPs caused an acute effect and recovered. This study confirms that biogenic sulfide effectively attenuates ZnO and Cu⁰ NPs toxicity to methanogens by the formation of metal sulfides.

Original language	English (US)
Pages (from-to)	755-763
Number of pages	9
Journal	Journal of Hazardous Materials
Volume	283
DOIs	https://doi.org/10.1016/j.jhazmat.2014.10.030
State	Published - Jan 1 2015

Keywords

Anaerobic digestion
Elemental copper and zinc oxide nanoparticles
Inhibition
Sulfate-reduction

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

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10.1016/j.jhazmat.2014.10.030

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title = "Role of biogenic sulfide in attenuating zinc oxide and copper nanoparticle toxicity to acetoclastic methanogenesis",

abstract = "Soluble ions released by zinc oxide (ZnO) and copper (Cu0) nanoparticles (NPs) have been associated with toxicity to methanogens. This study evaluated the role of biogenic sulfide in attenuating ZnO and Cu0 NP toxicity to methanogens. Short- and long-term batch experiments were conducted to explore ZnO and Cu0 NPs toxicity to acetoclastic methanogens in sulfate-containing (0.4mM) and sulfate-free conditions. ZnO and Cu0 were respectively 14 and 7-fold less toxic in sulfate-containing than in sulfate-free assays as indicated by inhibitory constants (Ki). The Ki with respect to residual soluble metal indicated that soluble metal was well correlated with toxicity irrespective of the metal ion source or presence of biogenic sulfide. Long-term assays indicated that ZnO and Cu0 NPs caused different effects on methanogens. ZnO NPs without protection of sulfide caused a chronic effect, whereas Cu0 NPs caused an acute effect and recovered. This study confirms that biogenic sulfide effectively attenuates ZnO and Cu0 NPs toxicity to methanogens by the formation of metal sulfides.",

keywords = "Anaerobic digestion, Elemental copper and zinc oxide nanoparticles, Inhibition, Sulfate-reduction",

author = "Jorge Gonzalez-Estrella and Daniel Puyol and Reyes Sierra-Alvarez and Field, {Jim A.}",

note = "Funding Information: This work was supported by the Semiconductor Research Corporation (SRC)/ Sematech Engineering Research Center for Environmentally Benign Semiconductor Manufacturing. Gonzalez-Estrella was partly funded by CONACyT . Publisher Copyright: {\textcopyright} 2014 Elsevier B.V.",

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doi = "10.1016/j.jhazmat.2014.10.030",

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AU - Gonzalez-Estrella, Jorge

AU - Puyol, Daniel

AU - Sierra-Alvarez, Reyes

AU - Field, Jim A.

N1 - Funding Information: This work was supported by the Semiconductor Research Corporation (SRC)/ Sematech Engineering Research Center for Environmentally Benign Semiconductor Manufacturing. Gonzalez-Estrella was partly funded by CONACyT . Publisher Copyright: © 2014 Elsevier B.V.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Soluble ions released by zinc oxide (ZnO) and copper (Cu0) nanoparticles (NPs) have been associated with toxicity to methanogens. This study evaluated the role of biogenic sulfide in attenuating ZnO and Cu0 NP toxicity to methanogens. Short- and long-term batch experiments were conducted to explore ZnO and Cu0 NPs toxicity to acetoclastic methanogens in sulfate-containing (0.4mM) and sulfate-free conditions. ZnO and Cu0 were respectively 14 and 7-fold less toxic in sulfate-containing than in sulfate-free assays as indicated by inhibitory constants (Ki). The Ki with respect to residual soluble metal indicated that soluble metal was well correlated with toxicity irrespective of the metal ion source or presence of biogenic sulfide. Long-term assays indicated that ZnO and Cu0 NPs caused different effects on methanogens. ZnO NPs without protection of sulfide caused a chronic effect, whereas Cu0 NPs caused an acute effect and recovered. This study confirms that biogenic sulfide effectively attenuates ZnO and Cu0 NPs toxicity to methanogens by the formation of metal sulfides.

AB - Soluble ions released by zinc oxide (ZnO) and copper (Cu0) nanoparticles (NPs) have been associated with toxicity to methanogens. This study evaluated the role of biogenic sulfide in attenuating ZnO and Cu0 NP toxicity to methanogens. Short- and long-term batch experiments were conducted to explore ZnO and Cu0 NPs toxicity to acetoclastic methanogens in sulfate-containing (0.4mM) and sulfate-free conditions. ZnO and Cu0 were respectively 14 and 7-fold less toxic in sulfate-containing than in sulfate-free assays as indicated by inhibitory constants (Ki). The Ki with respect to residual soluble metal indicated that soluble metal was well correlated with toxicity irrespective of the metal ion source or presence of biogenic sulfide. Long-term assays indicated that ZnO and Cu0 NPs caused different effects on methanogens. ZnO NPs without protection of sulfide caused a chronic effect, whereas Cu0 NPs caused an acute effect and recovered. This study confirms that biogenic sulfide effectively attenuates ZnO and Cu0 NPs toxicity to methanogens by the formation of metal sulfides.

KW - Anaerobic digestion

KW - Elemental copper and zinc oxide nanoparticles

KW - Inhibition

KW - Sulfate-reduction

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Role of biogenic sulfide in attenuating zinc oxide and copper nanoparticle toxicity to acetoclastic methanogenesis

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