Transcript Mineral Resources - Wikispaces

Problems due to overuse of energy
Resources
Unit III
Part V
Problems due to overuse of energy
Resources
• Some of the major problems which arise due to over exploitation
of energy resources
• A) Extinction of resource: It has been predicted that many of
the non renewable sources like crude oil, will completely deplete
in the 35 to 40 years as they are limited and get centuries to
replenish
• B) Pollution: Overuse of energy sources results in emission of
Co2, So2, Nox, particulate matter which causes air pollution, and
related problems like , acid rains, global warming.
Extinction of Resource
Pollution
• Economic effects: As these resources will be depleted, cost will
increase, which will seriously effect economy and the
development of the nation.
• Need for the development of new technology:
• The technology used for conventional resources will become
obsolete so new technology has to be developed using alternate
fuels.
Economic Effects
Need for the development of new technology
Environmental Impact due to Mineral
Extraction
Environmental Impact due to Mineral
Extraction
• Mining and processing of minerals
have considerable impact on land,
water, air, and biological resources.
• Deforestation and degradation of
Land: The top soil and vegetation are
cleared from mining area to get
access to the deposit. Such large scale
deforestation and degradation leads
to ecological imbalance. Mining
activity can cause a considerable loss
of
land
due
to
Chemical
contamination,
destruction
of
protective layer of soil. There may be
considerable loss of wild life habitat.
Huge quantity of debris may spoil the
aesthetic value of the region
• Subsidence of land: It is associated
with
underground
mining.
The
presence of Old, deep mines may cause
the ground surface to subside, this may
seriously damage buildings, roads,
farmlands.
• Ground water contamination: Mining
activity pollutes the ground water.
Chemicals used in mining activity may
pollute the water, some heavy metals
leached into ground water and
contaminate it.
Subsidence
Water Contamination
• Surface water pollution: The acid
mine drainage waste contaminates
nearby rivers, streams and lakes. Such
acidic water is detrimental for aquatic
life, plants and people who consumes
contaminated water.
• Air Pollution: The suspended
particles, sox, soot, arsenic, lead may
be emitted in atmosphere which are
dangerous for health
• Noise pollution: Blasting activity and
transporting vehicles cause noise
disturbance to local residents and
wild life.
• Occupational Hazards: Most of
miners
suffer
from
various
respiratory and skin diseases due to
continuous exposure to SPM and toxic
substances. They may suffer from
silicosis, asbestosis.
Occupational Hazards
Activity
• Write a brief essays on the following topic
• “Every source of energy has its limitation and problems”.
Assignment
• What are the effects on environment due to extraction of
mineral resources?
• Write explanatory notes on
Over-Exploitation of Energy Resources