Biocorrosion inhibition effect of 2-aminopyrimidine derivatives on SRB

Abstract

In the study the biocidal activity and the corrosion inhibitor activity of 2-aminopyrimidines on growth of Desulfotomaculum sp. B2-1 and B2-2 strains and biocorrosion of X65 steel in 63a medium were determined. For this purpose 4 synthetic compounds (2-amino-4-chloro-6-methylpyrimidine (AMP1), 2-amino-4-chloro-6-morpholinepyrimidine (AMP3), 2amino-4-chloro-6-(4-methylpiperazine-1-yl) pyrimidine (AMP8), 2-amino-4-morpholine-6-methylpyrimidine (AMP11)) were tested for biocidal activity on Desulfotomaculum sp. Corrosion experiment system were prepared with standard corrosion cell were incubated at 30°C in incubator for bacterial growth. Electrochemical Impedance Spectroscopy (EIS) and potentiodynamic polarization methods were used to identify corrosion with CH Instruments 660B. The AMP1 and AMP3 compounds reduced the growth of Desulfotomaculum sp. at 25 mg L -1 concentration. Moreover, these synthetic compounds reduced the biocorrosion of X65 steel by B2-1 strain 95% and 91% for AMP1 and AMP3 sequentially.

Electrochemical studies on the corrosion resistance of 18 K gold in artificial saliva, in the absence and presence of Gemer-2 tablet (orally taken by type 2 diabetes)

“…Electrochemical studies are used to measure the corrosion resistance of metals and alloys in various media. [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] The corrosion resistance of 18K gold in aritificial saliva, in the absenc and presence of Gemer-2 has been evaluated by electrochemical studies such as polarization study and AC impedance spectra.…”

The effect of triazoloazepine bromide with biocidal activity on microbial copper corrosion

“…(1-[2-(4-Bromophenyl)-2-oxoethyl]-3-[4-methoxyphenylamino)methyl]-6,7,8,9-tetrahydro-5H- [1,2,4]triazolo[4,3-a]azepin-1-ium bromide (ТАВ) [13] was studied as an inhibitorbiocide. The enrichment culture of SRB was gathered from metal equipment surfaces of sewage treatment constructions (Chernihiv) [14].…”

“…Considerable loss of metal fund to microbial corrosion and man-caused risks demand the search of effective inhibitors with biocidal activity and the establishment of their action mechanism. Most of the researches are aimed at studying steel biocorrosion under the influence of sulfate-reducing bacteria (SRB) and its inhibition [1][2][3][4]. Under anaerobic conditions that facilitate the growth of SRB, technological copper equipment is also subject to microbial corrosion [5].…”

Influence of some tablets on corrosion resistance of orthodontic wire made of SS 316L alloy in artificial saliva

“…The AC impedance spectra of SS 316L alloy immersed in Artificial Saliva (AS) in the absence and presence of five tablets obtained from AC impedance spectra are shown in Figures 4, 5. The AC impedance parameters namely charge transfer resistance (R t ) and double layer capacitance (C dl ) derived from Nyquist plots ( Figure 4) and Bode plots ( Figure 5) are also given in this Table 3 [17][18][19][20][21]. In the Nyquist plot the extreme point in the high frequency region corresponds to R s (solution resistance).…”