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

Microbes and Other Elemental Cycles01:24

Microbes and Other Elemental Cycles

Microbial activity plays a pivotal role in the biogeochemical cycling of iron and manganese, especially at the redox gradients characteristic of stratified aquatic environments. These cycles are driven by microbial transformations between oxidized and reduced forms of the metals, allowing organisms to exploit them for metabolic energy and structural purposes.Iron Cycling Across Redox GradientsIn neutral, oxygen-rich surface waters, iron is predominantly found in its oxidized, insoluble ferric...
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 Wastewater Treatment01:30

Microbial Wastewater Treatment

Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
Biological Treatment of Effluent and Waste Water01:30

Biological Treatment of Effluent and Waste Water

Biological wastewater treatment relies on the metabolic activity of microorganisms to remove pollutants from sewage. In modern treatment systems, this process is organized into sequential stages that progressively reduce solid material, dissolved organic matter, and microbial contamination. Each stage plays a distinct role in improving water quality and preparing the effluent for safe discharge or reuse.Primary and Secondary TreatmentPrimary treatment is a physical process that removes large...
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...

You might also read

Related Articles

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

Sort by
Same author

A New In-Line GAC-Based Device for Concentrating Viruses in Treated Wastewater: Implications for Full-Scale UV C LED Treatment.

ACS ES&T water·2026
Same author

Nitrate-Mediated Photooxidation of Steroid Estrogens: Efficacy and Prospects for Wastewater Treatment.

ACS ES&T water·2025
Same author

Photolysis at the Speed of Light: Chemical-Free Degradation of Trace Organic Contaminants by Bespoke Photolysis Using High-Intensity Ultraviolet C Light-Emitting Diodes.

ACS ES&T water·2025
Same author

Impact of material properties for improved Pseudomonas aeruginosa biofilm inactivation with 280 nm UV LEDs.

Scientific reports·2025
Same author

Detection of avian influenza virus in surface waters using passive samplers.

Npj viruses·2025
Same author

Evaluating Orthophosphate-Silicate Blend as an Alternative to Blended Phosphates for Corrosion Control and Sequestration.

ACS ES&T water·2025
Same journal

The overlooked risk of horizontal transfer of plasmid-borne antibiotic resistance genes induced by organophosphate esters in aquaculture environments.

Water research·2026
Same journal

Coastal saltmarshes as nature-based solutions for pesticide mitigation through groundwater-surface water interactions.

Water research·2026
Same journal

Coupled geochemical profiling and metagenomics reveal controls on phosphine preservation and emission in a eutrophic Estuary.

Water research·2026
Same journal

Enabling smart decentralized constructed wetlands for greywater reuse with an attention-enhanced ensemble model: from nutrient treatment optimization to process-informed modeling.

Water research·2026
Same journal

Patterns and mechanisms of cross-media antimicrobial resistance development in a typical reclaimed water-receiving urban river.

Water research·2026
Same journal

Development of an electronic nose to characterize geosmin and 2-methylisoborneol of water collected from different phases in water treatment plants.

Water research·2026
See all related articles

Related Experiment Video

Updated: Jun 30, 2026

Experimental Column Setup for Studying Anaerobic Biogeochemical Interactions Between Iron (Oxy)Hydroxides, Trace Elements, and Bacteria
06:52

Experimental Column Setup for Studying Anaerobic Biogeochemical Interactions Between Iron (Oxy)Hydroxides, Trace Elements, and Bacteria

Published on: December 19, 2017

Manganese removal during bench-scale biofiltration.

Mark S Burger1, Stephen S Mercer, Gordon D Shupe

  • 1Department of Civil and Resource Engineering, Dalhousie University, 1360 Barrington Street, Halifax, Nova Scotia B3J 1Z1, Canada.

Water Research
|September 24, 2008
PubMed
Summary
This summary is machine-generated.

Biological manganese removal using Leptothrix discophora SP-6 and indigenous biofilms effectively removes manganese. This research shows biological filters work across a wider pH range than previously known.

More Related Videos

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
15:19

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor

Published on: October 15, 2015

Related Experiment Videos

Last Updated: Jun 30, 2026

Experimental Column Setup for Studying Anaerobic Biogeochemical Interactions Between Iron (Oxy)Hydroxides, Trace Elements, and Bacteria
06:52

Experimental Column Setup for Studying Anaerobic Biogeochemical Interactions Between Iron (Oxy)Hydroxides, Trace Elements, and Bacteria

Published on: December 19, 2017

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
15:19

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor

Published on: October 15, 2015

Area of Science:

  • Environmental Science
  • Microbiology
  • Water Treatment

Background:

  • Biological manganese removal is gaining traction in water treatment.
  • Understanding the mechanisms and operational limits of biological manganese removal is crucial.
  • Existing research has not fully elucidated the operational characteristics of biological manganese filters.

Purpose of the Study:

  • To compare the efficacy of indigenous biofilms versus Leptothrix discophora SP-6 for manganese removal.
  • To investigate the mechanisms of manganese removal in biological filters.
  • To determine the operational range, specifically pH, for effective biological manganese removal.

Main Methods:

  • Batch tests were conducted to assess manganese removal with and without manganese oxidizing bacteria.
  • Bench-scale biofiltration experiments compared indigenous biofilms and L. discophora SP-6 inoculations.
  • Operational parameters, including pH, were varied to determine the 'field of activity' for manganese removal.

Main Results:

  • Manganese removal exceeded 90% with both mixed indigenous populations and L. discophora SP-6, while air alone showed no removal.
  • Biological filters inoculated with L. discophora SP-6 achieved manganese removal comparable to indigenous biofilms.
  • Manganese removal was observed at a pH as low as 6.5, expanding the known operational range.

Conclusions:

  • Manganese oxidizing bacteria are essential for the auto-catalytic process in biological filters.
  • Manganese removal is a result of both adsorption to manganese oxides and biological oxidation.
  • Biological manganese removal is feasible across a broader range of influent conditions, making it a viable option for more communities.