Related Experiment Video
Updated: Aug 6, 2026

04:40
Electrostatic Method to Remove Particulate Organic Matter from Soil
Published on: February 10, 2021
Microbial treatment of soil to remove pentachlorophenol
1School of Chemical Engineering, Cornell University, Ithaca, New York 14853-0294.
Applied and Environmental Microbiology
|March 1, 1983
Summary
Introducing pentachlorophenol (PCP)-degrading bacteria into contaminated soil offers a rapid cleanup solution. This bioremediation method significantly reduces PCP
Area of Science:
- Environmental microbiology
- Bioremediation
- Environmental chemistry
Background:
- Pentachlorophenol (PCP) is a persistent organic pollutant used in wood preservatives.
- PCP contamination poses risks to aquatic ecosystems through soil runoffs.
- Effective remediation strategies are needed to mitigate PCP hazards.
Purpose of the Study:
- To evaluate the efficacy of direct bacterial inoculation for PCP-contaminated soil remediation.
- To assess the potential of PCP-degrading bacteria as a prophylactic measure against environmental contamination.
Main Methods:
- Laboratory experiments at 30°C involving direct inoculation of PCP-utilizing Arthrobacter into contaminated soil.
- Field tests conducted in an outdoor shed to assess PCP disappearance rates.
Main Results:
- Direct inoculation of Arthrobacter reduced soil PCP half-life from 2 weeks to less than 1 day in laboratory tests.
- Soil inoculation effectively accelerated PCP disappearance in outdoor field tests.
Conclusions:
- Direct bacterial inoculation is a highly effective method for rapid remediation of PCP-contaminated soil.
- This bioremediation approach offers a promising prophylactic strategy to prevent environmental pollution from PCP.
Related Concept Videos
Bioremediation
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.
Chemical Agents for Microbial Control
Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
Microbial Bioremediation of Hydrocarbons
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to physical or...
Microbial Bioremediation of Pesticides
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
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 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...

