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Toxicity assessment of inorganic nanoparticles to acetoclastic and hydrogenotrophic methanogenic activity in anaerobic granular sludge.
J Hazard Mater. 2013 Sep 15; 260:278-85.JH

Abstract

Release of engineered nanoparticles (NPs) to municipal wastewater from industrial and residential sources could impact biological systems in wastewater treatment plants. Methanogenic inhibition can cause failure of anaerobic waste(water) treatment. This study investigated the inhibitory effect of a wide array of inorganic NPs (Ag(0), Al₂O₃, CeO₂, Cu(0), CuO, Fe(0), Fe₂O₃, Mn₂O₃, SiO₂, TiO₂, and ZnO supplied up to 1500 mgL(-1)) to acetoclastic and hydrogenotrophic methanogenic activity of anaerobic granular sludge. Of all the NPs tested, only Cu(0) and ZnO caused severe methanogenic inhibition. The 50% inhibiting concentrations determined towards acetoclastic and hydrogenotrophic methanogens were 62 and 68 mgL(-1) for Cu(0) NP; and 87 and 250 mgL(-1) for ZnO NP, respectively. CuO NPs also caused inhibition of acetoclastic methanogens. Cu(2+) and Zn(2+) salts caused similar levels of inhibition as Cu(0) and ZnO NPs based on equilibrium soluble metal concentrations measured during the assays, suggesting that the toxicity was due to the release of metal ions by NP-corrosion. A commercial dispersant, Dispex, intended to increase NP stability did not affect the inhibitory impact of the NPs. The results taken as a whole suggest that Zn- and Cu-containing NPs can release metal ions that are inhibitory for methanogenesis.

Authors+Show Affiliations

Department of Chemical and Environmental Engineering, University of Arizona, PO Box 210011, Tucson, AZ 85721, USA. jorgegonzaleze@arizona.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23770618

Citation

Gonzalez-Estrella, Jorge, et al. "Toxicity Assessment of Inorganic Nanoparticles to Acetoclastic and Hydrogenotrophic Methanogenic Activity in Anaerobic Granular Sludge." Journal of Hazardous Materials, vol. 260, 2013, pp. 278-85.
Gonzalez-Estrella J, Sierra-Alvarez R, Field JA. Toxicity assessment of inorganic nanoparticles to acetoclastic and hydrogenotrophic methanogenic activity in anaerobic granular sludge. J Hazard Mater. 2013;260:278-85.
Gonzalez-Estrella, J., Sierra-Alvarez, R., & Field, J. A. (2013). Toxicity assessment of inorganic nanoparticles to acetoclastic and hydrogenotrophic methanogenic activity in anaerobic granular sludge. Journal of Hazardous Materials, 260, 278-85. https://doi.org/10.1016/j.jhazmat.2013.05.029
Gonzalez-Estrella J, Sierra-Alvarez R, Field JA. Toxicity Assessment of Inorganic Nanoparticles to Acetoclastic and Hydrogenotrophic Methanogenic Activity in Anaerobic Granular Sludge. J Hazard Mater. 2013 Sep 15;260:278-85. PubMed PMID: 23770618.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Toxicity assessment of inorganic nanoparticles to acetoclastic and hydrogenotrophic methanogenic activity in anaerobic granular sludge. AU - Gonzalez-Estrella,Jorge, AU - Sierra-Alvarez,Reyes, AU - Field,James A, Y1 - 2013/05/24/ PY - 2013/02/14/received PY - 2013/04/16/revised PY - 2013/05/15/accepted PY - 2013/6/18/entrez PY - 2013/6/19/pubmed PY - 2014/4/2/medline KW - COD KW - Copper KW - Engineered nanoparticles KW - Inhibition KW - Methanogenesis KW - NMA KW - NPs KW - PSD KW - VSS KW - ZP KW - Zinc oxide KW - chemical oxygen demand KW - engineered nanoparticles KW - normalized methanogenic activity KW - particle size distribution KW - volatile suspended solids KW - zeta potential SP - 278 EP - 85 JF - Journal of hazardous materials JO - J Hazard Mater VL - 260 N2 - Release of engineered nanoparticles (NPs) to municipal wastewater from industrial and residential sources could impact biological systems in wastewater treatment plants. Methanogenic inhibition can cause failure of anaerobic waste(water) treatment. This study investigated the inhibitory effect of a wide array of inorganic NPs (Ag(0), Al₂O₃, CeO₂, Cu(0), CuO, Fe(0), Fe₂O₃, Mn₂O₃, SiO₂, TiO₂, and ZnO supplied up to 1500 mgL(-1)) to acetoclastic and hydrogenotrophic methanogenic activity of anaerobic granular sludge. Of all the NPs tested, only Cu(0) and ZnO caused severe methanogenic inhibition. The 50% inhibiting concentrations determined towards acetoclastic and hydrogenotrophic methanogens were 62 and 68 mgL(-1) for Cu(0) NP; and 87 and 250 mgL(-1) for ZnO NP, respectively. CuO NPs also caused inhibition of acetoclastic methanogens. Cu(2+) and Zn(2+) salts caused similar levels of inhibition as Cu(0) and ZnO NPs based on equilibrium soluble metal concentrations measured during the assays, suggesting that the toxicity was due to the release of metal ions by NP-corrosion. A commercial dispersant, Dispex, intended to increase NP stability did not affect the inhibitory impact of the NPs. The results taken as a whole suggest that Zn- and Cu-containing NPs can release metal ions that are inhibitory for methanogenesis. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/23770618/Toxicity_assessment_of_inorganic_nanoparticles_to_acetoclastic_and_hydrogenotrophic_methanogenic_activity_in_anaerobic_granular_sludge_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(13)00345-2 DB - PRIME DP - Unbound Medicine ER -