Zhang D.Lee D.-J.Pan X.2019-05-132019-05-13201309608524https://scholars.lib.ntu.edu.tw/handle/123456789/407735Extracellular polymeric substances (EPS) existed ubiquitously in biological systems affect the mobility and availability of heavy metals in the environments. The adsorption-desorption behaviors of Hg(II) and Sb(V) on EPS were investigated. The sorption rates follow Sb(V) > Hg(II), and the desorption rates follow reverse order. Applications of ethylene diamine tetraacetic acid (EDTA), Ca(II) and pH shocks affect desorption rates and desorbed quantities of Hg(II) from EPS-Hg complex. Temperature shock minimally affects the desorption rate of Hg(II). Conversely, the EPS-Sb complex is stable subjected to EDTA, Ca(II), temperature or pH shocks. The excitation-emission matrix (EEM) fluorescence spectroscopy and fast-Fourier (FT-IR) analysis showed that Hg(II) and Sb(V) principally interacted with polysaccharides and protein-like compounds in the EPS, respectively. The EPS-Hg complex presents a time bomb that may release high levels of Hg(II) in short time period under environmental shocks. ? 2012 Elsevier Ltd.AntimonyDesorptionExtracellular polymeric substances (EPS)KineticsMercuryjournal article10.1016/j.biortech.2012.10.0892-s2.0-84870974685https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870974685&doi=10.1016%2fj.biortech.2012.10.089&partnerID=40&md5=4709cec1a824ed032ab179f5f08f9e05