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

Hydrogen Bonds00:26

Hydrogen Bonds

135.8K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
135.8K
Hydrogen Bonds01:04

Hydrogen Bonds

15.6K
A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
15.6K
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

14.6K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
14.6K
Bioremediation00:46

Bioremediation

22.7K
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.
22.7K
Hydrolysis01:15

Hydrolysis

124.0K
Overview
Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
Hydrolysis Reverses Dehydration Synthesis
Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...
124.0K
Environmental Applications of Microorganisms01:30

Environmental Applications of Microorganisms

1.3K
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
1.3K

You might also read

Related Articles

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

Sort by
Same author

Intertwined Digital Human and Robot Modeling-Driven Development of Reharob 3.0: The Quad-Arm Functional Upper Limb Rehabilitation Robot System.

IEEE ... International Conference on Rehabilitation Robotics : [proceedings]·2025
Same author

Testing the Limit Range of Motion Safety Function of Upper Limb Rehabilitation Robots with an Anthropometrically Adjustable and Sensorized Dummy Limb<sup></sup>.

IEEE ... International Conference on Rehabilitation Robotics : [proceedings]·2022
Same author

The Diversity of Nitrogen-Cycling Microbial Genes in a Waste Stabilization Pond Reveals Changes over Space and Time that Is Uncoupled to Changing Nitrogen Chemistry.

Microbial ecology·2020
Same author

SVD-clustering, a general image-analyzing method explained and demonstrated on model and Raman micro-spectroscopic maps.

Scientific reports·2020
Same author

Orthopaedic metallic artefact reduction algorithm facilitates CT evaluation of the urinary tract after hip prosthesis.

Clinical radiology·2019
Same author

Effect of Production System and Pruning on Temporal Development of Cercospora depazeoides and on Berry Yield in Black Elderberry Orchards.

Plant disease·2019

Related Experiment Video

Updated: Mar 7, 2026

Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

3.3K

Recent advances in biohydrogen research.

K L Kovács1, Cs Bagyinka2, L Bodrossy1

  • 1Department of Biotechnology, A. József University, H-6726 Szeged, Temesvári krt. 62, Hungary, , , , , , HU.

Pflugers Archiv : European Journal of Physiology
|February 9, 2017
PubMed
Summary

Future energy demands necessitate alternatives as fossil fuels deplete. Hydrogen offers a clean, transportable energy carrier, with biological production methods currently under intensive molecular investigation.

Keywords:
Key words: biohydrogenbiogasdenitrification.environmental biotechnologyenzyme stabilitymetalloenzymes

More Related Videos

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

4.0K
A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

20.4K

Related Experiment Videos

Last Updated: Mar 7, 2026

Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

3.3K
Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

4.0K
A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

20.4K

Area of Science:

  • Energy Science
  • Biotechnology
  • Environmental Science

Background:

  • Fossil fuel formation lags behind consumption, leading to dwindling reserves.
  • Global energy demand is rising, exacerbating resource scarcity.
  • Hydrogen is a promising alternative energy carrier due to its transportability and clean combustion products (water vapor).

Purpose of the Study:

  • To highlight the challenges in future energy supply.
  • To emphasize the advantages of hydrogen as an alternative energy carrier.
  • To underscore the nascent stage of understanding biological hydrogen production.

Main Methods:

  • Review of energy supply challenges.
  • Analysis of hydrogen properties as an energy carrier.
  • Identification of research gaps in biological hydrogen production.

Main Results:

  • Fossil fuel depletion is a critical global issue.
  • Hydrogen presents a viable, eco-friendly energy solution.
  • Molecular mechanisms of biological hydrogen production require further elucidation.

Conclusions:

  • Transitioning to alternative energy sources like hydrogen is imperative.
  • Biological hydrogen production holds significant potential but needs more research.
  • Further investigation into the molecular details of biological hydrogenesis is crucial for future energy solutions.