Reuse of expired cefort drug in nickel electrodeposition from Watts’ bath
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2023-03-23 22:09
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DUCA, Delia-Andrada, DAN, Mircea Laurentiu, VASZILCSIN, Nicolae. Reuse of expired cefort drug in nickel electrodeposition from Watts’ bath. In: Ecological and environmental chemistry : - 2017, Ed. 6, 2-3 martie 2017, Chișinău. Chisinau, Republic of Moldova: Academy of Sciences of Moldova, 2017, Ediția 6, p. 160.
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Ecological and environmental chemistry
Ediția 6, 2017
Conferința "Ecological and environmental chemistry 2017"
6, Chișinău, Moldova, 2-3 martie 2017

Reuse of expired cefort drug in nickel electrodeposition from Watts’ bath


Pag. 160-160

Duca Delia-Andrada, Dan Mircea Laurentiu, Vaszilcsin Nicolae
 
Politehnica University of Timisoara
 
 
Disponibil în IBN: 15 martie 2019


Rezumat

In this paper, the possibility to use ceftriaxone active compound from expired cefort drug as additive in nickel electrodeposition from Watts bath has been investigated. The large drugs amount, expired or non-compliant, makes their disposal a serious issue which requires new environmental friendly removal techniques [1,2]. Even small quantities of active substances found in these drugs can act as additives in electroplating baths. Additives role in galvanization consists in a good influence on physical and mechanical properties, brightness and levelling for metallic deposits [3-5]. Acidic Watts bath type is most commonly used for nickel and nickel based alloys deposition and it maintains actuality due to the anticorrosive efficiency and ornamental effect of nickel coatings [6]. Sodium ceftriaxone is the active substance found in cefort drug, a cephalosporin antibiotic. The systematic (IUPAC) name is: (Z)-7-[2-(2-aminothiazol-4-yl)-2-methoxyimi-noacetamido]-3-[(2,5 -dihydro- 6 -hydroxy- 2 -methyl- 5 -oxo- 1,2,4 -triazin- 3 -yl)thiomethyl]- 3 -cephem- 4 -carboxylic acid (disodium salt, sesquaterhydrate) [7]. According to its structure, ceftriaxone sodium is a promising additive. Ceftriaxone electrochemical behaviour and preliminary information about its influence on nickel electrodeposition process were obtained using cyclic voltammetry (CV) technique. CVs have been recorded on platinum electrode at scan rates between 5 and 500 mV s-1. Linear voltammograms recorded at low scan rate showed the drug concentration influence in 5 g L-1 Ni2+ electrolyte solution. Kinetic parameters, exchange current density io and cathodic transfer coefficient 1-α, have been calculated from Tafel polarization plots at different temperatures, in 25 – 65oC range. Further, electrochemical impedance spectroscopy technique was used to investigate the charge transfer resistance in same solutions containing different concentration of ceftriaxone.