CO 2 和SRB共存产出水中咪唑啉衍生物的环境行为及缓蚀长效性研究
摘要
The inhibition behavior of imidazoline on carbon steel in CO2-saturated artificial sewag- es with sulfate reduction bacteria (SRB) was investigated by weight loss method, 3D microscope and electrochemical methods. The concentrations of imidazoline were measured by UV- visible spectrophotometer,then the breeding of SRB was studied by measuring the amount of bacteria and the molecular structure of residual materials of imidazoline was characterized by FTIR. The results showed that: imidazoline could inhibit the breeding of SRB and imidazoline exhibited rather high inhibition efficiency in the artificial sewages without and with SRB after 10 d of incubation, corre- spondingly the contents of imidazoline were reduced to 87.5% and 86.5% for the two cases. The FTIR showed that characteristic peaks of pentacyclic compounds in the infrared spectra of the imid- azoline residue could be observed, which implied that the functional groups of imidazoline were not destroyed by SRB during the corrosion process. Therefore, the imidazoline could act as inhibi- tor in the presence of the SRB for long term.