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selenium removal enhanced

Desulfurization: Critical step towards enhanced selenium ...

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

SBIR Phase I: Enhanced Biocatalytic Selenium Removal

2021-1-26 · Name: Michael Melnick Title: DSc Phone: (510) 344-0668 Email: [email protected]ch

Desulfurization: Critical step towards enhanced selenium ...

2017-4-1 · 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 ...

Desulfurization: critical step towards enhanced selenium ...

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 ...

Enhanced Adsorption of Selenium Ions from Aqueous

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 microscopy (SEM), X-ray ...

Enhanced Adsorption of Selenium Ions from Aqueous

2017-5-7 · 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 ].

Enhanced Adsorption of Selenium Ions from Aqueous ...

2017-5-7 · 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.

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.

Removal of Selenium from Industrial Effluent Streams

Removal of Selenium from Industrial Effluent Streams Material characterisation, modelling and process implementation By Carl Mac Namara*, Javier Torroba# and ... facile regeneration and enhanced selectivity for selenium ions against competing sulfate ions. Finally, the performance of these materials in a

Removal of selenium from refinery wastewater - Nalco

7419602: Selenium removal from water: 2008-09-02: Alexander et al. 7138063: Method of removing arsenic and other anionic contaminants from contaminated water using enhanced coagulation

Desulfurization: Critical step towards enhanced selenium ...

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 ...

Desulfurization: Critical step towards enhanced selenium ...

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 ...

SBIR Phase I: Enhanced Biocatalytic Selenium Removal

2021-1-26 · Name: Michael Melnick Title: DSc Phone: (510) 344-0668 Email: [email protected]

Desulfurization: critical step towards enhanced selenium ...

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 ...

Enhanced Adsorption of Selenium Ions from Aqueous

2017-5-7 · 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 ].

Enhanced Adsorption of Selenium Ions from Aqueous ...

2017-5-7 · 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.

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.

Removal of Selenium from Industrial Effluent Streams

Removal of Selenium from Industrial Effluent Streams Material characterisation, modelling and process implementation By Carl Mac Namara*, Javier Torroba# and ... facile regeneration and enhanced selectivity for selenium ions against competing sulfate ions. Finally, the performance of these materials in a

Selenium Partitioning and Removal Across a Wet FGD ...

2015-11-10 · 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.

Industrial Selenium Pollution: Wastewaters and Physical ...

2017-9-3 · 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) Adsorption

SBIR Phase I: Enhanced Biocatalytic Selenium Removal

2021-1-26 · Name: Michael Melnick Title: DSc Phone: (510) 344-0668 Email: [email protected]

Enhanced Adsorption of Selenium Ions from Aqueous

2017-5-7 · 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 ].

Selenium Removal from Wastewater| SUEZ

2021-9-29 · 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 ...

Enhanced Adsorption of Selenium Ions from Aqueous ...

2017-5-7 · 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.

Selenium removal process - ConocoPhillips Company

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.

Removal of Selenium from Industrial Effluent Streams

Removal of Selenium from Industrial Effluent Streams Material characterisation, modelling and process implementation By Carl Mac Namara*, Javier Torroba# and ... facile regeneration and enhanced selectivity for selenium ions against competing sulfate ions. Finally, the performance of these materials in a

Selenium Partitioning and Removal Across a Wet FGD ...

2015-11-10 · 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.

Coal-fired O&M: A novel, non-biological process for ...

2020-3-6 · ChemTreat’s patent-pending process SeQuester offers a physical-chemical alternative to the biological method of selenium removal. The process utilizes an enhanced adsorptive matrix along with ...

Passive Treatment Strategies for Selenium at Coal Mines ...

2018-3-28 · removal in stratified flooded pits can be enhanced at low cost through bioengineering methods (e.g., fertilization). • Organic matter is the fuel that drives oxygen demand and rates of microbially-mediated redox reactions. • Organic matter production can be greatly enhanced via nutrient addition. Pit Lakes: Enhanced Bioremediation

Industrial Selenium Pollution: Wastewaters and Physical ...

2017-9-3 · 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) Adsorption