Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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A Laboratory Study of the Flocculation of Dissolved Heavy Metals in Kali RiverDuring Estuarine Mixing, West Coast of India


Affiliations
1 Department of Marine Geology, Mangalore University, Mangalagangotri 574 199, India
2 Marine Chemistry Division, Bedford Institute of Oceanography, Dartmouth, NS-B2Y 4A2, Canada
     

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River water-sea water mixing experiments were carried out to study the time dependence of flocculation process, the flocculation behaviour of dissolved Cu, Pb, Zn, Ni, Co, Mn, Cr and Fe in the Kali estuary. Flocculation appears to be maximum at high salinities (>25‰) and is rapid, about 7 to 60% of the dissolved metal content flocculating within half an hour of mixing. This brings out the role of sea water as a powerful flocculating agent for the dissolved load of river water.

Keywords

Marine Geology, Pollution, West Coast, Kali River, Karnataka.
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  • A Laboratory Study of the Flocculation of Dissolved Heavy Metals in Kali RiverDuring Estuarine Mixing, West Coast of India

Abstract Views: 248  |  PDF Views: 2

Authors

K. Balakrishna
Department of Marine Geology, Mangalore University, Mangalagangotri 574 199, India
B. R. Manjunatha
Marine Chemistry Division, Bedford Institute of Oceanography, Dartmouth, NS-B2Y 4A2, Canada
R. Shankar
Department of Marine Geology, Mangalore University, Mangalagangotri 574 199, India

Abstract


River water-sea water mixing experiments were carried out to study the time dependence of flocculation process, the flocculation behaviour of dissolved Cu, Pb, Zn, Ni, Co, Mn, Cr and Fe in the Kali estuary. Flocculation appears to be maximum at high salinities (>25‰) and is rapid, about 7 to 60% of the dissolved metal content flocculating within half an hour of mixing. This brings out the role of sea water as a powerful flocculating agent for the dissolved load of river water.

Keywords


Marine Geology, Pollution, West Coast, Kali River, Karnataka.