Removal of selenium from river water by a microbial community enhanced with Enterobacter taylorae in organic carbon coated sand columns Sci Total Environ . 2005 Jun 15;346(1-3):280-5. doi: 10.1016/j.scitotenv.2005.02.019.

The removal of selenium from aqueous medium is complex and expensive, because of the high wastewater volumes generated, low discharge limits (even in μg/L) and the presence of Se(IV) and Se(VI) species (Santos et al. 2015).As regulatory limits are becoming stricter, selenium removal from wastewater has become more and more challenging.

Immobilization of selenium and iodine as radionuclide surrogates in cement related materials. ACS Pure and Applied Chemistry International Conference 2019, Bangkok, Thailand, Feb. 2019. Guo, B., and Sasaki, K. Removal of selenate by co-precipitate with

This resin also removed residual seleniuni to below 10 (ig/L. Trials on high‐salinity drainage waters, similar to those found in evaporation ponds, were successful and gave enhanced specific selenium removal rates. The costs of removing selenium or selenium and boron from the drainage water were estimated to be $ 0.038 ‐ 0.052 / m 3 and $ 0 ...

A selenium removal efficiency of 92% was achieved in a bioreactor with initial biomass of 2.2 × 10 6 cells / g AIAA after a 70-day operation period. Little improvement was observed by lowering the influent Se(VI) concentration from 50 to 10 mg / L, while the removal efficiency was significantly enhanced by either extending the HRT from 3.2 to ...

ABMet* for selenium removal from water & wastewater. ABMet is a revolutionary biological process that removes metals and inorganics from wastewater to below non-detect levels. The ABMet process uses naturally occurring, non-pathogenic microbes to reduce and precipitate target compounds. The result is a highly efficient biological system that ...

The adsorption parameters of the selenium ions from water using raw CNTs and iron oxide impregnated carbon nanotubes (CNT-Fe 2 O 3) were optimized. Total removal of 1 ppm Se ions from water was achieved when 25 mg of CNTs impregnated with 20 wt.% of iron oxide nanoparticles is used.

The total (both phases) removal of Se across the scrubber averaged 61%, and was enhanced when hydrated lime sorbent was injected. There was evidence of gas-to-particle conversion of selenium across the scrubber, based on the dependence of selenium concentration on particle diameter downstream of the scrubber and on thermodynamic calculations.

of CNT s enhanced the removal of the selenium ions from. t h ew a t e r.O nt h eo t h e rh a n d,l o a d i n gF e. 2 O 3 NPs onto the. surface of CNT s …

Novel selenium removal method developed for mine waste-water. January 11, 2021. BRIMM Researcher Sue Baldwin and co-authors Frank Nkansah-Boadu and Ido Hatam (both of the Department of Chemical and Biological Engineering) have discovered new bacterial species capable of reducing selenium and nitrate simultaneously.

Staicu LC, Morin-Crini N, Crini G (2017) Desulfurization: critical step towards enhanced selenium removal from industrial effluents. Chemosphere 117:111–119 CrossRef Google Scholar Su T, Guan X, Gu G, Wang J (2008) …

Selenium is an important element that is required for humans, animals, plants and other life forms. Selenium is naturally present in the Earth's crust and its worldwide distribution has led to complex interactions between selenium and the natural environment (water, soil, sediments and air). The discharge of selenium contaminated water into the environment from …

Higher removal of selenium from mining wastewater during ferro-sonication process was due to the addition of FeSO 4, as well as production of H 2 O 2 in the medium during ultrasonic treatment, which enhanced the formation of hydroxyl (OH) radicals in the solution.

The removal of selenium from superficial and waste water is a worldwide problem. The maximum limit according to the World Health Organization (WHO) for the selenium in the water is set at a concentration of 10 μg/L. Carbon based adsorbents have attracted much attention and recently demonstrated promising performance in removal of selenium.

In another instance, the presence of nitrate enhanced dissolved selenium removal by enrichments from a pond receiving coal mine waste seepage (Lagoon A). When enrichments from Lagoon A and Goddard Marsh, respectively, were tested for dissolved selenium removal from actual coal MIW, the former achieved greater (40%) than the latter (10%).

The aim of this research was to investigate the potential of raw and iron oxide impregnated carbon nanotubes (CNTs) as adsorbents for the removal of selenium (Se) ions from wastewater. The original and modified CNTs with different loadings of Fe 2 O 3 nanoparticles were characterized using high resolution transmission electron microscopy (HRTEM), scanning electron …

Selenium (Se) removal from synthetic solutions and from real Flue Gas Desulfurization (FGD) wastewater generated by a coal-fired power plant was studied for the first time using a commercial iron ...

A process for removing selenium from an aqueous stream using a supported sulfur material, and optionally the addition of an activating agent for enhanced removal of selenite, is disclosed.

Desulfurization: Critical step towards enhanced selenium removal from industrial effluents

Selenium (Se) removal from synthetic solutions and from real Flue Gas Desulfurization (FGD) wastewater generated by a coal-fired power plant was studied for the first time using a commercial iron oxide impregnated strong base anion exchange resin, Purolite ® FerrIX A33E. In synthetic solutions, the resin showed high affinity for selenate and selenite, while sulfate …

iron oxides and selenium oxyanions can differ based on pH, it is often found that iron oxides tend to be more effective for selenite removal due to the formation of inner-sphere complexes between the selenite anion and iron centers, which is a more difficult interaction to achieve with selenate, making its removal less effective.7b,8

7419602: Selenium removal from water: : Alexander et al. 7138063: Method of removing arsenic and other anionic contaminants from …

Selenium (Se) has become an increasingly serious water contamination concern worldwide. It is an essential micronutrient for humans and animals, however, can be extremely toxic if taken in excess. Sorption can be an effective treatment for Se removal from a wide range of water matrices.

Industrial Wastewater System. McCue offers standard containerized water treatment units for the treatment and removal of common water contaminants. Some of these contaminants include, but are not limited to, Selenium, Sulphate, Metals and Suspended Solids. In addition, McCue offers containerized units for the control and reduction of High pH in ...

This innovative selenium removal technology reduces selenium concentrations via chemical and physical methods while helping avoid capital expenditures by transferring costs towards operations and maintenance. It utilizes an enhanced adsorptive matrix and process adjustments along with conventional wastewater treatment equipment such as holding ...

In order to find the maximum selenium removal by CNTs and to model the experimental data, two well-known kinetic models, pseudo-first-order and pseudo-second-order models, were used in this study. The Lagergren pseudo-first-order model proposes that the rate of sorption is proportional to the number of sites unoccupied by the adsorbate [ 37 ].