ASCE India Conference 2017
Phytoremediation—A Sustainable Solution for Reducing Heavy Metal Contamination from the Bhalaswa Landfill Site
Publication: Urbanization Challenges in Emerging Economies: Energy and Water Infrastructure; Transportation Infrastructure; and Planning and Financing
ABSTRACT
The physico-chemical characteristics of the Bhalaswa Landfill site were studied by analyzing soil and plants species to estimate the heavy metals contamination of the site. The aim of this study was to explore the feasibility of using phytoremediation for reducing environmental contamination of heavy metals due to landfill site. The five most abundant plants species identified in the region were: Prosopis juliflora, Riccinus communis, Calotropis procera, Chenopodium murale, and Chrysopogon zizanioides, used as the indicators for the level of contamination at the site. The samples were collected from 0 m, 500 m, 1000 m, and 2000 m distance from the landfill site to assess the variations in heavy metals contents as a function of distance from the landfill site. Bio-concentration factor revealed the result that C. zizanioides was the best accumulator for iron, C. murale for copper and cadmium, and P. juliflora for silver and therefore can be used for the phytoremediation of the contaminated site. The lowest moisture content of 3.45% in soil was found to be at the landfill site, indicating high amount of dry density and thereby increased level of gas transport. One approach in making dumping of solids wastes on this landfill sustainable with regards to heavy metals pollution could be to grow these plants and harvest them upon maturity. This could help in controlling increased rate of heavy metal pollution of soil, groundwater in this region. A conscious effort is needed now to slow down the increase of metal pollution due to the Bhalaswa Landfill for protecting human health and environmental health.
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ACKNOWLEDGEMENTS
The work was done by the first author in IIT DELHI, New Delhi as a part of the summer research project of TERI University, New Delhi. The authors would like to acknowledge the support of the site officials of the Bhalaswa landfill site, New Delhi and Dr. Sanjay Kumar Gupta, Environmental Engineering Laboratory, Dept. of Civil Engineering, IIT Delhi for providing the assistance during the working period.
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Information & Authors
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Published In
Urbanization Challenges in Emerging Economies: Energy and Water Infrastructure; Transportation Infrastructure; and Planning and Financing
Pages: 247 - 255
Editors: Udai P. Singh, B. R. Chahar, Indian Institute of Technology, H. R. P. Yadav, Institution of Engineers (India), and Satish K. Vij
ISBN (Online): 978-0-7844-8202-5
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Dec 13, 2018
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