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

Gonzalez‐Estrella, Jorge; Puyol, Daniel; Sierra-Álvarez, Reyes; Field, Jim A.

doi:10.1016/j.jhazmat.2014.10.030

Cited by 50 publications

(34 citation statements)

References 27 publications

(41 reference statements)

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“…When the bioassays were spiked with either Cu 0 -NPs or CuCl 2 salt, accumulation of VFAs and unidentified metabolites, and incomplete conversion of intermediates to methane was observed in glucose fermentation and SPO bioassays. Severe inhibition of acetoclastic methanogenesis by Cu 0 NP and CuCl 2 has been found in our previous study (Gonzalez-Estrella et al, 2015). The K i values found in that research are shown in Fig.…”

Section: Comparison To Other Studiessupporting

confidence: 60%

“…Very similar values of K i were determined for three different trophic groups evaluated in this study (0.001 to 0.008 mM Cu) irrespective of whether the source was Cu 0 NP or CuCl 2 . The K i values of acetocalsitic methanogenesis from the previous study were included and they appear to indicate a moderately higher tolerance to freely soluble Cu(II) (Gonzalez-Estrella et al, 2015). However, the difference may be in part due to a different incubation times prior to measuring free Cu(II).…”

Section: K I For the Different Anaerobic Trophic Groupsmentioning

confidence: 99%

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Elemental copper nanoparticle toxicity to different trophic groups involved in anaerobic and anoxic wastewater treatment processes

Gonzalez‐Estrella

Puyol

Gallagher

et al. 2015

Science of The Total Environment

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Section: Comparison To Other Studiessupporting

confidence: 60%

Section: K I For the Different Anaerobic Trophic Groupsmentioning

confidence: 99%

Elemental copper nanoparticle toxicity to different trophic groups involved in anaerobic and anoxic wastewater treatment processes

Gonzalez‐Estrella

Puyol

Gallagher

et al. 2015

Science of The Total Environment

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“…Mu et al 2011;Gonzalez-Estrella et al 2013;Luna-del Risco et al 2011, have examined the toxic effects of metallic nanoparticles in AD and explored ways to reduce their effects. Biologically produced sulphide has been shown to be a good candidate to reduce the toxic effect of ZnO and Cu 0 nanoparticles in aceticlastic methanogenesis by 14-and 7-fold, respectively (Gonzalez-Estrella et al 2015).…”

Section: Sulphide As a Metal Detoxification Mechanismmentioning

confidence: 99%

Methanogens, sulphate and heavy metals: a complex system

Paulo

Stams

Sousa

2015

Rev Environ Sci Biotechnol

118

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Anaerobic digestion (AD) is a well-established technology used for the treatment of wastes and wastewaters with high organic content. During AD organic matter is converted stepwise to methanecontaining biogas-a renewable energy carrier. Methane production occurs in the last AD step and relies on methanogens, which are rather sensitive to some contaminants commonly found in wastewaters (e.g. heavy metals), or easily outcompeted by other groups of microorganisms (e.g. sulphate reducing bacteria, SRB). This review gives an overview of previous research and pilot-scale studies that shed some light on the effects of sulphate and heavy metals on methanogenesis. Despite the numerous studies on this subject, comparison is not always possible due to differences in the experimental conditions used and parameters explained. An overview of the possible benefits of methanogens and SRB co-habitation is also covered. Small amounts of sulphide produced by SRB can precipitate with metals, neutralising the negative effects of sulphide accumulation and free heavy metals on methanogenesis. Knowledge on how to untangle and balance sulphate reduction and methanogenesis is crucial to take advantage of the potential for the utilisation of biogenic sulphide as a metal detoxification agent with minimal loss in methane production in anaerobic digesters.

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“…ZnONPs are extensively used in the industrial field, and may have exposure to humans via several possible routes including inhalation or ingestion or uptake by the gastrointestinal tract. Recently, there have been reports that NPs can reach the brain via blood-brain barrier (BBB) penetration and subsequently cause damage by the induction of oxidative stress, inflammatory responses, and cytotoxicity [1][2][3][4]. It has also been found that ZnONPs could reach the brain after oral administration in animals or translocation along the olfactory nerve pathway [5,6] and may induce the changes in the spatial learning and memory ability of rats by altering the synaptic plasticity [7], and induce toxic effects in the blood and brain [8].…”

Section: Introductionmentioning

confidence: 99%

Exposure to Zinc Oxide Nanoparticles Induces Neurotoxicity and Proinflammatory Response: Amelioration by Hesperidin

Ansar

Abudawood

Hamed

et al. 2016

Biol Trace Elem Res

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Zinc oxide nanoparticles (ZnONPs) are widely used in food packaging and may enter the body directly if exposed. Hereby, in this study, the oral administration was selected as the route of exposure for rats to nanoparticles and the effect of hesperidin (HSP, 100 mg/kg bwt) was evaluated on ZnONP (600 mg/kg bwt)-induced neurotoxicity in rats. ZnONPs were characterized using transmission electron microscopy. Neurotoxicity was observed as seen by elevation in serum inflammatory markers including tumor necrosis factor alpha (TNF-α), interleukin 1 (IL-1β), interleukin-6 (IL-6), C-reactive protein (CRP), and activities of catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), and glutathione (GSH) content in rat brains. Pretreatment of rats with HSP in ZnONP-treated group elevated activities of antioxidant enzymes. HSP also caused decrease in TNF-α, IL-1β, IL-6, and CRP levels which was higher in the ZnONP-treated group. The results suggest that HSP augments antioxidant defense with anti-inflammatory response against ZnONP-induced neurotoxicity. The increased antioxidant enzymes enhance the antioxidant potential to reduce oxidative stress.

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

Cited by 50 publications

References 27 publications

Elemental copper nanoparticle toxicity to different trophic groups involved in anaerobic and anoxic wastewater treatment processes

Elemental copper nanoparticle toxicity to different trophic groups involved in anaerobic and anoxic wastewater treatment processes

Methanogens, sulphate and heavy metals: a complex system

Exposure to Zinc Oxide Nanoparticles Induces Neurotoxicity and Proinflammatory Response: Amelioration by Hesperidin

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