Adsorption and breakdown of penicillin antibiotic in the presence of titanium oxide nanoparticles in water

Chemosphere
Jonathan W PetersonAmanda B Schuiling

Abstract

The fate and transport of antibiotics in natural water systems is controlled in part by interactions with nanometer (10(-9)m) metal oxide particles. Experiments were performed by mixing solutions of ampicillin (AMP), a common, penicillin-class human and veterinary antibiotic, with 25 nm-TiO(2) (anatase) nanoparticles at different pH conditions. Both sorption and degradation of AMP were observed in the AMP-nanoparticle solutions. For AMP concentrations from ~3 μM to 2.9 mM the overall AMP removal from solution can be described by linear isotherms with removal coefficients (K(r)) of 3028 (±267)L kg(-1) at pH 2, 11,533 (±823)L kg(-1) at pH 4, 12,712 (±672)L kg(-1) at pH 6, and 1941 (±342)L kg(-1) at pH 8. Mass spectral analysis of AMP solutions after removal of the solid nanoparticles yielded ions that indicate the presence of peniclloic acid, penilloic acid and related de-ammoniated by-products as possible compounds resulting from the degradation of AMP at the TiO(2) surface.

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Citations

Mar 7, 2014·Journal of Environmental Health Science & Engineering·Mansooreh DehghaniAmir Anushiravani
Aug 1, 2013·Environmental Science and Pollution Research International·João H O S PereiraRui A R Boaventura
Nov 9, 2012·The Science of the Total Environment·Emily M Van WierenJonathan W Peterson
Jun 20, 2015·Physical Chemistry Chemical Physics : PCCP·Libin YangBing Zhao
Sep 28, 2018·Artificial Cells, Nanomedicine, and Biotechnology·Hua-Wei LiuYong-Gang Zhou
Sep 21, 2017·TheScientificWorldJournal·Samira NorzaeeRazieh Khaksefidi
Aug 17, 2019·New Biotechnology·Ana C ReisPhilippe F X Corvini
Jan 28, 2021·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Davoud Balarak, Gordon McKay

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