Methanogenic archaea and sulfate reducing bacteria induce severe corrosion of steel pipelines after hydrostatic testing

Enze Zhou, Jianjun Wang, Masoumeh Moradi, Huabing Li, Dake Xu, Yuntian Lou, Jinheng Luo, Lifeng Li, Yulei Wang, Zhenguo Yang, Fuhui Wang, Jessica A. Smith

Table 3 Element atomic percentages (%) measured by X-ray photoelectron spectroscopy (XPS) on coupons exposed to LW or GW for 14 and 30 days.

Elements Fe Cr P Cl S N O C 14 days LW 23.57 — 1.17 0.70 0.93 2.25 42.72 28.66 GW 27.10 0.88 — — — — 51.60 20.42 30 days LW 11.21 — 1.72 — 9.92 7.85 10.36 58.94 GW 14.17 — — — — 10.22 36.45 39.16