About this site
Treated effluents from flue-gas-desulfurisation (from coal combustion power plants) can contain ppm levels of selenium, most commonly as selenate, but as much as 1 g l–1 of sulfur in the form of sulfate (5). special attention is paid to the removal of selenium ions
Selenium Removal from Refinery Effluent JSE Consulting
Novel Approach for Removing Selenium from Phillips 66 Ponca City, OK Refinery Effluent AFPM, Oct 19, 2015 3 Fe(OH)3, while selenate is difficult to remove with
About this site
Apr 01, 2017 The removal of selenium from complex industrial wastewaters such as the FGD effluents by adsorption is a promising process provided efficient pre-treatment steps are deployed. Because of the structural similarity of various chemical species (e.g., sulfate and selenate), ion exchange resins could be easily exhausted, thus limiting their
About this site
Aug 24, 2021 To improve selenium removal, higher ratios, of 2, 3 and 5% respectively, were also evaluated only for the effluents M2 and M5, for the same contact time (8 hours). Thus, after 8 hours of stirring at 300 rpm and 20°C, the pH and redox potential of treated effluents were measured and the supernatant was filtered (0.45 μm) before quantification
About this site
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 exhibited a strong
About this site
Describe successful case studies of Se removal applied to aqueous effluents at the commercial or pilot stage, as well as cases of scaling up to full scale for these industry sectors: Power generation Mining and agriculture Oil and gas • Treatment is only one of three approaches for selenium removal: Prevention Source
About this site
Jan 17, 2014 The results show that MBBR can be a viable solution for biological selenium removal as well as nitrate removal from FGD and mine effluents. By combining the MBBR with traditional chemical treatment, very low effluent selenium concentrations can be reached. With so much focus on the selenium regulations, having a biological solution offers
Removal of phosphorus/selenium from aqueous solutions by
cost-effective treatment approach to phosphorus removal from municipal secondary effluents. (2) Synthesized nano-magnetite was used as an adsorbent to develop an innovative technology for selenium removal from aqueous solutions. Each case involved a series of batch adsorption experiments conducted to evaluate adsorption kinetics,
Selenium removal from mining and process wastewater: a
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.
About this site
Treated effluents from flue-gas-desulfurisation (from coal combustion power plants) can contain ppm levels of selenium, most commonly as selenate, but as much as 1 g l–1 of sulfur in the form of sulfate (5). special attention is paid to the removal of selenium ions
Selenium Removal from Refinery Effluent JSE Consulting
Novel Approach for Removing Selenium from Phillips 66 Ponca City, OK Refinery Effluent AFPM, Oct 19, 2015 3 Fe(OH)3, while selenate is difficult to remove with
About this site
Apr 01, 2017 The removal of selenium from complex industrial wastewaters such as the FGD effluents by adsorption is a promising process provided efficient pre-treatment steps are deployed. Because of the structural similarity of various chemical species (e.g., sulfate and selenate), ion exchange resins could be easily exhausted, thus limiting their
About this site
Aug 24, 2021 To improve selenium removal, higher ratios, of 2, 3 and 5% respectively, were also evaluated only for the effluents M2 and M5, for the same contact time (8 hours). Thus, after 8 hours of stirring at 300 rpm and 20°C, the pH and redox potential of treated effluents were measured and the supernatant was filtered (0.45 μm) before quantification
About this site
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 exhibited a strong
About this site
Describe successful case studies of Se removal applied to aqueous effluents at the commercial or pilot stage, as well as cases of scaling up to full scale for these industry sectors: Power generation Mining and agriculture Oil and gas • Treatment is only one of three approaches for selenium removal: Prevention Source
About this site
Jan 17, 2014 The results show that MBBR can be a viable solution for biological selenium removal as well as nitrate removal from FGD and mine effluents. By combining the MBBR with traditional chemical treatment, very low effluent selenium concentrations can be reached. With so much focus on the selenium regulations, having a biological solution offers
Removal of phosphorus/selenium from aqueous solutions by
cost-effective treatment approach to phosphorus removal from municipal secondary effluents. (2) Synthesized nano-magnetite was used as an adsorbent to develop an innovative technology for selenium removal from aqueous solutions. Each case involved a series of batch adsorption experiments conducted to evaluate adsorption kinetics,
Selenium removal from mining and process wastewater: a
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.