The distribution of selenium in Wet Flue Gas Desulfurization (WFGD) process is still unclear and even in controversial, impeding the development of selenium removal technologies. This research has found that the selenite in simulated slurry could be reduced by SO 2 while selenate has not been affected. Characterization methods including X-ray ...

In this paper, we aim to exclusively bio-reduce selenate to selenite in an open high-rate bioreactor. This conversion could be part of a two-stage process in which the selenite is subsequently reduced by chemical means under optimal conditions to produce a biomass-free selenium product.

Selenite was immobilized by simple adsorption onto GR at pH 8, and by adsorption–reduction at pH 9. Selenate was immobilized by adsorption–reduction to selenite and zero valent selenium …

Selenites can form insoluble surface complexes with metal oxides such as ferric hydrous oxide and manganese hydroxide, and can therefore be removed that way. Elemental selenium can also be produced from selenites or selenates by using a reduction process, biological or otherwise.

In this paper, we aim to exclusively bio-reduce selenate to selenite in an open high-rate bioreactor. This conversion could be part of a two-stage process in which the selenite is …

The distribution of selenium in Wet Flue Gas Desulfurization (WFGD) process is still unclear and even in controversial, impeding the development of selenium removal …

Selenites can form insoluble surface complexes with metal oxides such as ferric hydrous oxide and manganese hydroxide, and can therefore be removed that way. Elemental selenium can …

In this work, a continuous-flow anaerobic membrane bioreactor (AnMBR) was employed for the first time to treat synthetic wastewater containing 0.2 mM soluble selenite (SeO 3 2−). The SeO 3 2− removal efficiency by the AnMBR …

Indeed, during selenite treatment, a drastically diminution of selenium concentration occurred even at positive ORP values (e.g. 0.0025 mg/L final concentration, 96.2% selenium removal, at 190.5...

In this study, we investigated the dynamic process of Se (IV) oxidation and adsorption on manganese oxide via a stirred-flow method. We hypothesized that selenium simultaneous …

In this study, we investigated the dynamic process of Se (IV) oxidation and adsorption on manganese oxide via a stirred-flow method. We hypothesized that selenium simultaneous adsorption and oxidation on manganese oxide occurs with different speed limiting conditions.

A decrease in selenite binding to microwave-assisted and non microwave-assisted synthetic Fe 3 O 4 nanomaterials was observed to begin at the introduction of 10 and 100 ppm of PO 4 3−, respectively. In the presence of 100 ppm PO 4 3−, the molar ratio of selenite to phosphate is 1 SeO 3 2−:1000 PO 4 3−. Even at this large molar ratio of ...

We demonstrate that both pathways significantly contribute to selenite immobilization in a microfluidic flow cell having a transverse mixing zone between propionate and selenite that …

We demonstrate that both pathways significantly contribute to selenite immobilization in a microfluidic flow cell having a transverse mixing zone between propionate and selenite that mimics the reaction zone along the margins of a selenite plume undergoing bioremediation in the presence of background sulfate.

A decrease in selenite binding to microwave-assisted and non microwave-assisted synthetic Fe 3 O 4 nanomaterials was observed to begin at the introduction of 10 and 100 ppm …

It is found that with the increase of SO 2 concentration in flue gas, the reduction of selenite increased and the reduction reaction is an exothermic reaction. Meanwhile, the oxidation effect of S 2 O 82− competes with the reduction effect of SO 2.

It is found that with the increase of SO 2 concentration in flue gas, the reduction of selenite increased and the reduction reaction is an exothermic reaction. Meanwhile, the oxidation effect of S 2 O 82− competes with the reduction effect of SO 2.

In this work, a continuous-flow anaerobic membrane bioreactor (AnMBR) was employed for the first time to treat synthetic wastewater containing 0.2 mM soluble selenite (SeO 3 2−). The SeO 3 2− removal efficiency by the AnMBR was approachable to 100% in most of the time, regardless of the fluctuation in influent salinity and sulfate (SO 4 2 ...

Selenite was immobilized by simple adsorption onto GR at pH 8, and by adsorption–reduction at pH 9. Selenate was immobilized by adsorption–reduction to selenite and zero valent selenium (Se0) at both pH 8 and 9. In the process, GR oxidized to a mixture of goethite (FeOOH) and magnetite (Fe3O4).