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 Experiment Videos

Effect of operating parameters on molinate biodegradation.

Patrícia Correia1, Rui A R Boaventura, Maria A M Reis

  • 1LEPAE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal.

Water Research
|December 29, 2005
PubMed
Summary

This study shows that a bacterial culture (DC) can degrade the herbicide molinate under various conditions. Temperature significantly impacts molinate degradation rates, with optimal performance observed at 35°C.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Global Survey of Nutrition Education in Dental Schools: Current Practices and Opportunities.

European journal of dental education : official journal of the Association for Dental Education in Europe·2026
Same author

Sustainable Production of Poly(3-hydroxybutyrate) Using Eucalyptus Bark: Integration with Green Downstream Processing.

ACS sustainable chemistry & engineering·2026
Same author

Instruments for Assessing Nursing Care Quality: A Scoping Review.

Nursing reports (Pavia, Italy)·2025
Same author

Systems Metabolic Engineering of Genome-Reduced <i>Pseudomonas putida</i> for Efficient Production of Polyhydroxyalkanoate from <i>p</i>-Coumaric Acid.

Journal of agricultural and food chemistry·2025
Same author

Environmental impact assessment of tannin-based coagulants production from chestnut shells.

Journal of environmental management·2025
Same author

A sustainable solution for aquaculture wastewater treatment: Evaluation of tannin-based and conventional coagulants.

Chemosphere·2025

Area of Science:

  • Environmental Microbiology
  • Bioremediation
  • Chemical Engineering

Background:

  • Molinate is a widely used herbicide, and its environmental persistence necessitates effective degradation strategies.
  • A defined mixed bacterial culture, designated DC, has previously demonstrated the ability to mineralize molinate.
  • Understanding the optimal operating conditions for molinate degradation by culture DC is crucial for developing efficient bioremediation processes.

Purpose of the Study:

  • To evaluate the effect of various operating conditions on molinate degradation by bacterial culture DC in a batch reactor.
  • To identify key environmental factors influencing bacterial growth and molinate mineralization rates.
  • To assess molinate degradation in river water and in a continuous stirred tank reactor (CSTR).

Main Methods:

Related Experiment Videos

  • Batch reactor experiments were conducted to monitor molinate degradation, dissolved organic carbon (DOC) consumption, and degradation product accumulation.
  • Independent testing of parameters including temperature, pH, aeration rate, salinity, and nutrient supplementation.
  • Continuous stirred tank reactor (CSTR) studies were performed to evaluate degradation under continuous flow conditions.

Main Results:

  • Bacterial culture DC successfully grew and mineralized molinate across all tested conditions.
  • Temperature exerted the most significant influence, with optimal growth and degradation rates observed at 35°C compared to 15°C.
  • 2-oxo-molinate was identified as the primary degradation product, accumulating at low concentrations (<0.133 mg/L).
  • Similar specific degradation rates were achieved in CSTR systems as in batch reactors.

Conclusions:

  • Bacterial culture DC is robust and capable of degrading molinate under a wide range of environmental conditions.
  • Temperature is a critical factor for optimizing molinate biodegradation efficiency.
  • The findings support the potential application of culture DC for the bioremediation of molinate-contaminated environments.