thermal or nuclear power stations, and factories where water is utilized as coolant.
As an outcome of hot water exonerate, the hotness of water body amplify. Ascend
in temperature diminish the DO content of the water, disturbing negatively the
aquatic existence. This modifies the spectrum of organisms, which can approve to
live at that temperature and DO point. When organic matter is also found, the
bacterial feat amplifies owing to increase in temperature; therefore, ensuing in
speedy diminishes of DO. The release of hot water directs to the thermal layering in
the water bodies, where hot water will stay on the upper level [97, 98].
3.11 Radioactive Pollution
Atomic energy is basis of clean-air and carbon free electricity but the radioactive
ion contamination that is originated from, e.g., tailings and heap leakage remains of
uranium mining (such as
226 Ra ions), nuclear fusions derivatives (such as
90 Sr),
nuclear weapon tests, medical research and leakage and accidental explosions in the
nuclear reactors can create a long-term effect in the form of a serious threat to
human health [99, 100]. Nuclear power plants and industrial effluents are the source
of radioactive pollution in water. The fission process released huge energy and this
energy travels in the form of waves and even little bit of this is enough to cause
damage in human cells, tissues and organs. These harmful waves cannot be treated
physically, chemically and biologically. Radioactive effects persist in the environment for extended duration depending upon the elemental half-life [101].
Geologically long term deposition of all elements including radioactive minerals
get exposed to the geological agents after weathering and erosion and radioactive
elements get mobilized with time. The weathering rate depends on the mineral
composition, environmental condition and geological agents also [102]. Minimum
trace of radioactive element associated with all groundwater depending upon the
geological rock and strata of that area.
Radionuclides either natural or artificial have been present in water due to their
radius size and decay byproducts. Some of the examples of radioactive elements
emitting low radiation energy are potassium-40 (
40 K), tritium (
3
H), carbon-14 (
14 C),
and rubidium-87 (
87 Rb). While emitting high radiation energy alpha particles are
radium-226 (
226 Ra), the daughters of radium-228 (
228 Ra), polonium-210 (
210 Po),
uranium (U), thorium (Th), radon-220 (
220 Rn), and radon-222 (
222 Rn), also present
in trace amount in the water [103]. Among the oxo-anions, the pertechnetate (TcO 4
2
− ) ion, has significant attention as technetium isotope (
99 Tc) is a radioactive element
with a very high half-life time (2.1 * 10
5 years). In fission field,
99 Tc is byproduct
of nuclear fission of
235 U or
239 Pu with a high fission yield [101].
56
S. Madhav et al.
As an outcome of hot water exonerate, the hotness of water body amplify. Ascend
in temperature diminish the DO content of the water, disturbing negatively the
aquatic existence. This modifies the spectrum of organisms, which can approve to
live at that temperature and DO point. When organic matter is also found, the
bacterial feat amplifies owing to increase in temperature; therefore, ensuing in
speedy diminishes of DO. The release of hot water directs to the thermal layering in
the water bodies, where hot water will stay on the upper level [97, 98].
3.11 Radioactive Pollution
Atomic energy is basis of clean-air and carbon free electricity but the radioactive
ion contamination that is originated from, e.g., tailings and heap leakage remains of
uranium mining (such as
226 Ra ions), nuclear fusions derivatives (such as
90 Sr),
nuclear weapon tests, medical research and leakage and accidental explosions in the
nuclear reactors can create a long-term effect in the form of a serious threat to
human health [99, 100]. Nuclear power plants and industrial effluents are the source
of radioactive pollution in water. The fission process released huge energy and this
energy travels in the form of waves and even little bit of this is enough to cause
damage in human cells, tissues and organs. These harmful waves cannot be treated
physically, chemically and biologically. Radioactive effects persist in the environment for extended duration depending upon the elemental half-life [101].
Geologically long term deposition of all elements including radioactive minerals
get exposed to the geological agents after weathering and erosion and radioactive
elements get mobilized with time. The weathering rate depends on the mineral
composition, environmental condition and geological agents also [102]. Minimum
trace of radioactive element associated with all groundwater depending upon the
geological rock and strata of that area.
Radionuclides either natural or artificial have been present in water due to their
radius size and decay byproducts. Some of the examples of radioactive elements
emitting low radiation energy are potassium-40 (
40 K), tritium (
3
H), carbon-14 (
14 C),
and rubidium-87 (
87 Rb). While emitting high radiation energy alpha particles are
radium-226 (
226 Ra), the daughters of radium-228 (
228 Ra), polonium-210 (
210 Po),
uranium (U), thorium (Th), radon-220 (
220 Rn), and radon-222 (
222 Rn), also present
in trace amount in the water [103]. Among the oxo-anions, the pertechnetate (TcO 4
2
− ) ion, has significant attention as technetium isotope (
99 Tc) is a radioactive element
with a very high half-life time (2.1 * 10
5 years). In fission field,
99 Tc is byproduct
of nuclear fission of
235 U or
239 Pu with a high fission yield [101].
56
S. Madhav et al.