Bioremediation Flashcards
Bioremediation Definition
Any process that uses organisms or their enzymes to return the polluted environment to its original condition.
What is the range of oxygen needed for living organisms?
4-6 ppm.
True or False: Anaerobic bacteria are used more frequently than aerobic bacteria in bioremediation.
False.
What are some examples of aerobic bacteria used in bioremediation?
- Pseudomonas
- Alcaligenes
- Sphingomonas
- Rhodococcus
- Mycobacterium
What are methanotrophs?
Aerobic bacteria that utilize methane for carbon and energy.
What does phytoremediation involve?
Mitigating pollutant concentrations in contaminated soils, water, or air using plants.
What are hyperaccumulators?
Plants that can contain, degrade, or eliminate metals and other contaminants.
Which plant is known for extracting radioactive metals like cesium-137?
Sunflowers.
What is the purpose of pyrolysis in the context of phytoremediation?
To burn off organic carbon in plants while leaving radioactive metals behind.
Fill in the blank: Bioremediation is a __________ approach that uses organisms to degrade contaminants.
cost-effective
What are the two types of bioremediation?
- In situ bioremediation
- Ex situ bioremediation
What does in situ bioremediation mean?
The material to be bioremediated does not leave the site.
What does ex situ bioremediation entail?
The material to be bioremediated is moved to another site for treatment.
What is one major advantage of bioremediation?
It can potentially reduce costs by 60-90% compared to other technologies.
What is compost?
Aerobically decomposed remnants of organic materials used as a soil amendment.
How long do bioplastics take to biodegrade in an industrial composting environment?
Less than 180 days.
What is the primary source of traditional plastics?
Petroleum.
True or False: Phytoremediation can be used to eliminate pesticides from contaminated environments.
True.
What is one negative impact of using water hyacinth for bioremediation?
It can lead to mosquito breeding and surface water obstruction.
What is the role of lactobacillus in bioremediation?
To break down organic substances contaminated with pathogenic bacteria.
Elaborate on the Statement “There is no waste in nature”
Substances from rocks and soil go to plants and animals, to air and water, and back again through microbes in a cycle
Uses of Bacteria to clea up pollution
- Contained Waste (in Facotries)
- Contaminated sites (Soi land Water)
Mircrobes used in Bioremediation
- Aerobic Bacteria
- Methanotrophs
- Anaerobic Bacteria
- Fungi
Anaerobic Bacteria as a
