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

Bioremediation00:46

Bioremediation

21.0K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
21.0K
Metabolism of Chemolithotrophs01:15

Metabolism of Chemolithotrophs

304
Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
304
E1 Reaction: Kinetics and Mechanism02:46

E1 Reaction: Kinetics and Mechanism

15.9K
Here, in contrast to the E2 reaction mechanism, we delve into the aspects of the E1 reaction mechanism, which has two steps: rate-limiting loss of the leaving group and abstraction of the beta hydrogen by a weak base. Typically, the experimental proof for the E1 mechanism is via kinetic studies or isotope studies. While the former demonstrates the first-order kinetics—the dependence of the reaction solely on substrate concentration—the latter proves the abstraction of hydrogen only...
15.9K
E2 Reaction: Kinetics and Mechanism02:45

E2 Reaction: Kinetics and Mechanism

10.9K
SN2 substitutions and E2 eliminations of alkyl halides proceed via a concerted pathway. While the nucleophile attacks the alpha carbon in SN2 reactions, it functions as a strong base and abstracts a beta hydrogen in the E2 mechanism. The rate-limiting transition state in E2 elimination reactions is characterized by partially broken carbon–hydrogen and carbon–halogen bonds and a partially formed pi bond between the alpha and beta carbons. The beta hydrogen and halide are eliminated...
10.9K
Electrolysis03:00

Electrolysis

27.9K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
27.9K

You might also read

Related Articles

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

Sort by
Same author

Sustainable Oxygen Reduction Catalyzed by Whole-Cell Electro-Mutualism.

Environmental science & technology·2026
Same author

Iron-mediated photochemical fate of algal-derived DOM: Unraveling upward and downward environmental effects.

Water research·2025
Same author

Breaking the Carbon-Fluorine Stronghold: Reductive Defluorination of PFASs.

Environmental science & technology·2025
Same author

Metabolic allocation strategies of Geobacter in electroactive biofilms to adapt to varying acetate supply concentrations.

Water research·2025
Same author

Extracellular Electron Uptake Mediated by H<sub>2</sub>O<sub>2</sub>.

Environmental science & technology·2025
Same author

Dual-purpose elemental sulfur for capturing and accelerating biodegradation of petroleum hydrocarbons in anaerobic environment.

Water research X·2024

Related Experiment Video

Updated: Oct 13, 2025

Characterizing Electron Transport through Living Biofilms
08:52

Characterizing Electron Transport through Living Biofilms

Published on: June 1, 2018

8.6K

Bioelectrochemical system for dehalogenation: A review.

Xuemei Zhu1, Xin Wang1, Nan Li2

  • 1MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin, 300350, China.

Environmental Pollution (Barking, Essex : 1987)
|November 18, 2021
PubMed
Summary

Bioelectrochemical technology offers a promising solution for degrading persistent halogenated organic compounds. This review explores microbial electrochemical dehalogenation systems for effective in-situ remediation of contaminated sites.

Keywords:
BiocathodeDehalogenationExtracellular electron transferHalogenated organic compoundsOrganohalide-respiring bacteria

More Related Videos

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1
09:00

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1

Published on: April 16, 2018

10.2K
Electrochemically and Bioelectrochemically Induced Ammonium Recovery
09:50

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Published on: January 22, 2015

12.9K

Related Experiment Videos

Last Updated: Oct 13, 2025

Characterizing Electron Transport through Living Biofilms
08:52

Characterizing Electron Transport through Living Biofilms

Published on: June 1, 2018

8.6K
Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1
09:00

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1

Published on: April 16, 2018

10.2K
Electrochemically and Bioelectrochemically Induced Ammonium Recovery
09:50

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Published on: January 22, 2015

12.9K

Area of Science:

  • Environmental Science
  • Microbiology
  • Electrochemistry

Background:

  • Halogenated organic compounds are persistent pollutants that pose significant risks to human health and ecosystems.
  • Traditional physicochemical methods are often ineffective for complete removal of these contaminants.
  • In-situ remediation using bioelectrochemical technology presents a viable alternative.

Purpose of the Study:

  • To review microbial electrochemical dehalogenation systems for removing halogenated organic compounds.
  • To summarize reactor configurations and relevant organohalide-respiring bacteria.
  • To discuss the mechanisms and applications of bioelectrochemical technology in bioremediation.

Main Methods:

  • Review of existing literature on microbial electrochemical dehalogenation.
  • Analysis of reactor configurations and microbial consortia.
  • Examination of electrode potential regulation and extracellular electron transfer mechanisms.

Main Results:

  • Bioelectrochemical systems show promise for in-situ degradation of halogenated organic compounds.
  • Electrode potential modulation is key to microbial dehalogenation efficiency.
  • Extracellular electron transfer plays a crucial role in the dehalogenation process.

Conclusions:

  • Bioelectrochemical technology provides a promising strategy for the in-situ bioremediation of halogenated organic compounds.
  • This review offers theoretical support for developing efficient remediation technologies.
  • Insights are provided for removing refractory fluorides using these methods.