ABSTRACT

In this study, we combined synchrotron-based techniques including Scanning Transmission X-ray Microscopy (STXM) and X-ray Absorption Near Edge Structure (XANES) spectroscopy and incubation experiments to explore the redox transformation and mobility of adsorbed As(V) on nano-TiO2 in association with SRB. The objectives of our study were therefore to (1) evaluate the desorption and reduction of adsorbed As(V) on nano-TiO2; and (2) quantify the contribution of SRB to As release in reducing conditions.