Bioremediation

Question 1

Bioremediation Definition

Answer 1

Any process that uses organisms or their enzymes to return the polluted environment to its original condition.

Question 2

What is the range of oxygen needed for living organisms?

Answer 2

4-6 ppm.

Question 3

True or False: Anaerobic bacteria are used more frequently than aerobic bacteria in bioremediation.

Answer 3

False.

Question 4

What are some examples of aerobic bacteria used in bioremediation?

Answer 4

• Pseudomonas
• Alcaligenes
• Sphingomonas
• Rhodococcus
• Mycobacterium

Question 5

What are methanotrophs?

Answer 5

Aerobic bacteria that utilize methane for carbon and energy.

Question 6

What does phytoremediation involve?

Answer 6

Mitigating pollutant concentrations in contaminated soils, water, or air using plants.

Question 7

What are hyperaccumulators?

Answer 7

Plants that can contain, degrade, or eliminate metals and other contaminants.

Question 8

Which plant is known for extracting radioactive metals like cesium-137?

Answer 8

Sunflowers.

Question 9

What is the purpose of pyrolysis in the context of phytoremediation?

Answer 9

To burn off organic carbon in plants while leaving radioactive metals behind.

Question 10

Fill in the blank: Bioremediation is a __________ approach that uses organisms to degrade contaminants.

Answer 10

cost-effective

Question 11

What are the two types of bioremediation?

Answer 11

• In situ bioremediation
• Ex situ bioremediation

Question 12

What does in situ bioremediation mean?

Answer 12

The material to be bioremediated does not leave the site.

Question 13

What does ex situ bioremediation entail?

Answer 13

The material to be bioremediated is moved to another site for treatment.

Question 14

What is one major advantage of bioremediation?

Answer 14

It can potentially reduce costs by 60-90% compared to other technologies.

Question 15

What is compost?

Answer 15

Aerobically decomposed remnants of organic materials used as a soil amendment.

Question 16

How long do bioplastics take to biodegrade in an industrial composting environment?

Answer 16

Less than 180 days.

Question 17

What is the primary source of traditional plastics?

Answer 17

Petroleum.

Question 18

True or False: Phytoremediation can be used to eliminate pesticides from contaminated environments.

Answer 18

True.

Question 19

What is one negative impact of using water hyacinth for bioremediation?

Answer 19

It can lead to mosquito breeding and surface water obstruction.

Question 20

What is the role of lactobacillus in bioremediation?

Answer 20

To break down organic substances contaminated with pathogenic bacteria.

Question 21

Elaborate on the Statement “There is no waste in nature”

Answer 21

Substances from rocks and soil go to plants and animals, to air and water, and back again through microbes in a cycle

Question 22

Uses of Bacteria to clea up pollution

Answer 22

• Contained Waste (in Facotries)
• Contaminated sites (Soi land Water)

Question 23

Mircrobes used in Bioremediation

Answer 23

• Aerobic Bacteria
• Methanotrophs
• Anaerobic Bacteria
• Fungi

Question 24

Anaerobic Bacteria as a