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Phytoremediation potential of selected plants in Netravati and Gurupura estuary of Karnataka

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Relation http://eprints.cmfri.org.in/16678/
https://www.indianjournals.com/Mobile/JournalDetails.aspx?target=journal&ccode=ijsc
 
Title Phytoremediation potential of selected plants in Netravati and Gurupura estuary of
Karnataka
 
Creator Sulochanan, Bindu
Veena, S
Jayasankar, Reeta
Pranav, P
 
Description Unsustainable land use due to increasing human population, economic development
and emerging global markets have resulted in contamination of soil, soil erosion and
eutrophication in coastal regions. Freshwater needs of people are met almost entirely
by precipitation on land, with a small though increasing amount by desalination. Hence,
appropriate technologies need to be adopted to conserve and protect both soil and
water. Use of plants to reduce environmental pollutants is considered as a non invasive
technology. Mangrove ecosystem in the estuarine waters of Netravati and Gurupura
rivers acts as a shield to absorb the heavy metals before it reaches the Arabian sea. The
heavy metal Cu absorbed by Acanthus ilicifolius (AI) was 9.24±2.87 ppm, while Cd,
Cr and Hg absorbed in the sedge plant Cyperus malaccensis (CM) was 0.40±0.47 ppm,
1.09±0.32 ppm, and 0.21±0.05 ppm, respectively. Out of the 7 different plants selected
from the estuarine area near the bar mouth of Mangaluru, Acanthus ilicifolius and
Cyperus malaccensis was observed to have greater potential to adsorb heavy metals.
Treated, semi treated and untreated wastewater discharged from urban area into the
Arabian sea through the estuary is rich in nutrients leading to eutrophication. Preliminary treatment studies were carried out to assess the removal of nutrient load from this
effluent water in laboratory conditions using aquatic weeds. This revealed that Hydrilla
verticillata reduced 42.8% ammonia in the effluent water while Eicchornia crassipes
and Pistia stratiotes reduced 61.7% phosphate and 68.2% nitrite, respectively. The
study reveals that aquatic weeds could be used to remove nutrients from wastewater
before it enters the marine ecosystem and locally available mangrove and sedge plants
aid in reduction of contaminants in the coastal ecosystem
 
Publisher Indian Association of Soil and Water Conservationists (IASWC)
 
Date 2022
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/16678/1/Indian%20Journal%20of%20Soil%20Conservation_2022_Bindu%20Sulochanan.pdf
Sulochanan, Bindu and Veena, S and Jayasankar, Reeta and Pranav, P (2022) Phytoremediation potential of selected plants in Netravati and Gurupura estuary of Karnataka. Indian Journal of Soil Conservation, 50 (3). pp. 226-231.