Removal of Selenium from Industrial Effluent Streams

Unfortunately, most of them are unable to achieve good levels of selectivity for the removal of selenium in the presence of sulfur or other contaminants, limiting

Get Price

Removal of selenium from water and wastewater ...

2007-2-24  Selenium finds extensive application in the manufacture of photocells, rectifiers, xerography equipment, paint, Limestone and insecticides. Selenium concentration in

Get Price

Selenium-rich mine effluents treatment using zero-valent ...

2021-8-24  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).

Get Price

Selenium Removal Using a Moving Bed Biofilm Reactor

2014-1-17  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

Get Price

Review of Available Technologies for the Removal of ...

2016-8-23  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

Get Price

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

Get Price

Selenium removal method - Chevron U.S.A. Inc.

Effluents of sour water strippers are difficult to treat for selenium removal because of the unpredictable nature and unpredictable quantities of contaminants that

Get Price

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

Get Price

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

Get Price

Industrial Selenium Pollution: Wastewaters and Physical ...

2017-9-3  Adsorption is a less financially demanding alternative treatment option; however, the competition with other anions present in real industrial effluents severely

Get Price

Removal of selenium from water and wastewater ...

2007-2-24  Selenium finds extensive application in the manufacture of photocells, rectifiers, xerography equipment, paint, Limestone and insecticides. Selenium concentration in industrial effluents may vary from 1 to 7000 μg/L. This paper reviews various treatment technologies for the removal of selenium from water and wastewater such as sedimentation ...

Get Price

Selenium removal method - Chevron U.S.A. Inc.

Effluents of sour water strippers are difficult to treat for selenium removal because of the unpredictable nature and unpredictable quantities of contaminants that are present in the effluents. These contaminants often hinder irreversibly selenium removal processes that use membrane, ion exchange resins or inorganic adsorbents.

Get Price

Review of Available Technologies for the Removal of ...

2016-8-23  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 ...

Get Price

Selenium Removal Using a Moving Bed Biofilm Reactor

2014-1-17  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

Get Price

Removal of phosphorus/selenium from aqueous

2020-3-9  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,

Get Price

Industrial Selenium Pollution: Wastewaters and Physical ...

2017-9-3  Adsorption is a less financially demanding alternative treatment option; however, the competition with other anions present in real industrial effluents severely limits the Se removal performance. Chemical treatment has been tested for selenium removal, being mainly founded on the redox change of this element.

Get Price

Removal of Selenium from Wastewater using ZVI and

2021-5-12  REMOVAL OF SELENIUM FROM WASTEWATER USING ZVI AND HYBRID ZVI/IRON OXIDE PROCESS . A Thesis . by . ZHEN YANG . Submitted to the Office of Graduate Studies of . Texas AM University . in partial fulfillment of the requirements for the degree of . MASTER OF SCIENCE . Approved by: Chair of Committee, Yongheng Huang. Committee Members, Binayak ...

Get Price

) technology demonstrates low selenium effluents in ...

2015-3-20  removal of residual mill organics; O A two-stage EBR system each with a 6 -hour HRT to remove the total selenium and other metals; O An anaerobic post-treatment system with a 6-hour HRT to polish the EBR system effluents and remove the residual nutrients prior to discharge; and O A 24-hour holding pond prior to discharge – site specified.

Get Price

Mo, Sb and Se Removal from Scrubber Effluent of a Waste ...

Common physicochemical treatment of industrial wastewater is not very efficient regarding the removal of the oxyanion forming elements selenium, molybdenum and antimony. An industrial case is described where effluents from the wet treatment of flue gases from a rotary kiln for the incineration of industrial waste, contain variable amounts of ...

Get Price

Methods of Removing Heavy Metals from Industrial

2015-11-30  the removal of heavy metals from industrial wastewater. Physico-chemical removal processes such as; adsorption on new adsorbents, ion exchange, membrane filtration, electrodialysis, reverse osmosis, ultrafiltration and photocatalysis were discussed. Their advantages and drawbacks in application were evaluated.

Get Price

Removal of selenium from water and wastewater ...

2007-2-24  Selenium finds extensive application in the manufacture of photocells, rectifiers, xerography equipment, paint, Limestone and insecticides. Selenium concentration in industrial effluents may vary from 1 to 7000 μg/L. This paper reviews various treatment technologies for the removal of selenium from water and wastewater such as sedimentation ...

Get Price

Review of Available Technologies for the Removal of ...

2016-8-23  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 ...

Get Price

Removal of phosphorus/selenium from aqueous

2020-3-9  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,

Get Price

) technology demonstrates low selenium effluents in ...

2015-3-20  removal of residual mill organics; O A two-stage EBR system each with a 6 -hour HRT to remove the total selenium and other metals; O An anaerobic post-treatment system with a 6-hour HRT to polish the EBR system effluents and remove the residual nutrients prior to discharge; and O A 24-hour holding pond prior to discharge – site specified.

Get Price

Mo, Sb and Se Removal from Scrubber Effluent of a Waste ...

Common physicochemical treatment of industrial wastewater is not very efficient regarding the removal of the oxyanion forming elements selenium, molybdenum and antimony. An industrial case is described where effluents from the wet treatment of flue gases from a rotary kiln for the incineration of industrial waste, contain variable amounts of ...

Get Price

Advancement in Non-Biological Selenium Removal

2018-2-5  material will passivate through generation of iron oxide surface layers, reducing the selenium removal efficiency. In addition, the kinetics of selenate removal using iron-based sorbents is slow. Generally, sorbent materials have to be in contact with selenium containing water for a long time (2-12 hours) in order to remove selenium effectively.

Get Price

Removal of selenium from water by ion-exchange - Nalco ...

1995-3-1  Particularly, selenium removal may be accomplished by the use of anion exchange resins containing thiouronium groups. While commercially available ion exchange resins of the type described and claimed herein have been utilized for the recovery of precious metals such as gold or the removal of highly toxic metal ions such as mercury, they are ...

Get Price

Biological Removal of Selenate and Selenite from ...

2020-6-5  Purpose of Review Different selenium species released into the environment by anthropogenic activities pollute surface and ground water resources and can cause severe damage to the environment and ecosystems due to bio-accumulation. Though several physico-chemical methods are available to treat selenium

Get Price

Removal of chromium from industrial effluents using ...

2017-7-11  The presence of chromium in industrial effluents has become a huge problem worldwide as hexavalent chromium is highly toxic to animals due to its ability to generate reactive oxygen species in cells. The trivalent state of chromium, on the other hand, is significantly less toxic and also serves as an essential element in trace amounts. When industries such as electroplating, tannery, dyeing ...

Get Price

Methods of Removing Heavy Metals from Industrial

2015-11-30  the removal of heavy metals from industrial wastewater. Physico-chemical removal processes such as; adsorption on new adsorbents, ion exchange, membrane filtration, electrodialysis, reverse osmosis, ultrafiltration and photocatalysis were discussed. Their advantages and drawbacks in application were evaluated.

Get Price