Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Microbial Leaching01:27

Microbial Leaching

Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
Microbial Bioremediation of Uranium01:25

Microbial Bioremediation of Uranium

Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella, which use...
Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The hidden potential of archaea in carbon and nitrogen cycling in agricultural soils: a review.

Frontiers in microbiology·2026
Same author

Electrochemical Upcycling of Shell Waste for Sustainable Nutrient Recovery from Wastewater.

Environmental science & technology·2025
Same author

Upscaled open-culture production of microbial flocculants from industrial wastewaters.

Trends in biotechnology·2025
Same author

Effect of substrate size reduction and periodic nutrient supplementation on biological wood oxidation.

Journal of environmental management·2024
Same author

Biological S<sup>0</sup> reduction at neutral and acidic conditions: Performance and microbial community shifts in a H<sub>2</sub>/CO<sub>2</sub>-fed bioreactor.

Water research·2024
Same author

Oxygen-to-ammonium-nitrogen ratio as an indicator for oxygen supply management in microoxic bioanodic ammonium oxidation.

Water research·2024

Related Experiment Video

Updated: May 13, 2026

Biological Samples Preparation for Speciation at Cryogenic Temperature using High-Resolution X-Ray Absorption Spectroscopy
06:00

Biological Samples Preparation for Speciation at Cryogenic Temperature using High-Resolution X-Ray Absorption Spectroscopy

Published on: May 27, 2022

Microbiological selenate to selenite conversion for selenium removal.

Simon P W Hageman1, Renata D van der Weijden, Jan Weijma

  • 1Sub-department of Environmental Technology, Wageningen University, P.O. Box 17, 6700 AA Wageningen, The Netherlands. Simon.Hageman@wur.nl

Water Research
|March 15, 2013
PubMed
Summary

This study optimized bioreactor conditions to convert toxic selenate into less harmful selenite. Optimal settings achieved a high yield (79-95%), making biological selenate-to-selenite conversion a viable wastewater treatment strategy.

More Related Videos

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)
10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)

Published on: December 29, 2016

Solution&#45;Processed, Surface&#45;Engineered, Polycrystalline CdSe&#45;SnSe Exhibiting Low Thermal Conductivity
09:23

Solution-Processed, Surface-Engineered, Polycrystalline CdSe-SnSe Exhibiting Low Thermal Conductivity

Published on: May 17, 2024

Related Experiment Videos

Last Updated: May 13, 2026

Biological Samples Preparation for Speciation at Cryogenic Temperature using High-Resolution X-Ray Absorption Spectroscopy
06:00

Biological Samples Preparation for Speciation at Cryogenic Temperature using High-Resolution X-Ray Absorption Spectroscopy

Published on: May 27, 2022

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)
10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)

Published on: December 29, 2016

Solution&#45;Processed, Surface&#45;Engineered, Polycrystalline CdSe&#45;SnSe Exhibiting Low Thermal Conductivity
09:23

Solution-Processed, Surface-Engineered, Polycrystalline CdSe-SnSe Exhibiting Low Thermal Conductivity

Published on: May 17, 2024

Area of Science:

  • Environmental Science
  • Biotechnology
  • Chemical Engineering

Background:

  • Industrial wastewater increasingly contains toxic selenium compounds like selenate.
  • Current methods face challenges in efficiently removing these compounds.
  • Biological reduction offers a promising alternative for selenium remediation.

Purpose of the Study:

  • To optimize conditions for the exclusive biological reduction of selenate to selenite.
  • To maximize the yield and reduction rate of selenate to selenite.
  • To minimize the formation of elemental selenium, selenide, and organic selenium.

Main Methods:

  • Fed-batch experiments were conducted in an open high-rate bioreactor.
  • Variables tested included temperature (20-50°C), pH (6-9), biomass concentration (1-5g/L), and lactic acid concentration.
  • Selenate and selenite concentrations were monitored to determine conversion efficiency.

Main Results:

  • Optimal selenate reduction to selenite occurred at 30°C and pH 6-8, with 25 mM selenate and 13.75 mM lactic acid.
  • This yielded 79-95% selenite, with minimal further reduction.
  • Higher electron donor concentrations (5x) reduced selenite production to 22%.

Conclusions:

  • Biological conversion of selenate to selenite is feasible and efficient under optimized conditions.
  • This process can be integrated into a two-stage treatment for producing biomass-free selenium products.
  • High yields and reduction rates support its application in industrial wastewater treatment.