Syllabus Edition
First teaching 2015
Last exams 2025
Air Pollution Management Strategies (DP IB Environmental Systems & Societies (ESS))
Revision Note
Written by: Alistair Marjot
Reviewed by: Bridgette Barrett
Air Pollution Management Strategies
Air pollution, particularly urban smog, poses significant challenges that require effective management strategies
Various approaches can be adopted to mitigate and reduce air pollution
Photo by Bhawin Jagad on Unsplash
There is a clear need to alter human activity to consume less fossil fuels
Altering Human Activity
This can be done by encouraging the use of energy-efficient technologies in homes, industries, and transportation
Another approach is to promote the use of public or shared transit systems to reduce the number of individual vehicles on the road
Encouraging walking or cycling for shorter distances also reduces reliance on motor vehicles
Regulating and Reducing Pollutants at Point of Emission
Government regulations and policies can be implemented to set emission limits and standards for industries, vehicles, and power plants
Taxes or fees on high-polluting activities can be imposed to discourage their usage and incentivise cleaner alternatives
The transition to cleaner and renewable energy sources, such as solar, wind, and hydroelectric power should be promoted (e.g. by providing financial incentives for early adopters)
Catalytic Converters
Catalytic converters are devices installed in vehicles' exhaust systems to reduce emissions of primary pollutants, such as nitrogen oxides and carbon monoxide
These devices facilitate chemical reactions that convert harmful pollutants into less harmful substances before they are released into the atmosphere
Regulating Fuel Quality
Governments can establish regulations and standards for fuel quality, ensuring that it contains fewer pollutants
For example, this can be achieved by implementing stricter controls on sulfur content in fuels, therefore reducing emissions of sulfur dioxide and related pollutants
Adopting Clean-up Measures
Reforestation efforts can help absorb carbon dioxide from the atmosphere, reducing its concentration and mitigating the greenhouse effect
Re-greening initiatives involve creating green spaces within urban areas, improving air quality and providing additional benefits such as shade and cooling effects
Conservation of natural areas and preservation of ecosystems (e.g. salt marshes, peat bogs, tropical rainforests) can contribute to carbon sequestration and the reduction of air pollution
These management strategies, when implemented collectively, aim to reduce air pollution, improve air quality, and protect human health and the environment
By addressing pollution at its sources and promoting sustainable practices, we can work towards a cleaner and healthier future
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