Related Experiment Video
Updated: May 28, 2026

Mesocosm-Scale Constructed Wetland Design for Wastewater Treatment
Published on: May 2, 2025
A study on the waste metal remediation using floriculture at East Calcutta Wetlands, a Ramsar site in India
Soumya Chatterjee1, Lokendra Singh, Buddhadeb Chattopadhyay
1Defence Research Laboratory, Post Bag No. 02, Tezpur, 784001 Assam, India. drlsoumya@gmail.com
Abstract:
Use of specific plant species in remediation of heavy metal-contaminated soil and water was a promising eco-friendly technology. The present study indicated the possibilities of phytoremediation of metal-contaminated (namely Ca, Cr, Mn, Fe, Cu, Zn, and Pb) soil by using plant species important for floriculture of East Calcutta Wetlands, a Ramsar site at the eastern fringe of Calcutta city. Plant species like sunflower (Helianthus annuus), marigold (Tagetes patula), and cock's comb (Celocia cristata) grew on soil contaminated by industrial sludge and irrigated regularly with wastewater accumulated different metals in different plant parts in varied concentrations. Pot culture study in the laboratory setup was also done to ascertain the efficiency of these plants for ameliorating contaminated soil. It was found that general accumulation patterns of metals concerned in different plant parts were root > leaf > stem > flower. This work indicated the importance of cultivation of economically important, non-edible, ornamental plant species as an alternative cost-effective practice to remediate heavily contaminated farmlands of East Calcutta Wetlands.
Related Concept Videos
Biological Treatment of Effluent and Waste Water
Microbial Wastewater Treatment
Bioremediation
Microbial Leaching
Microbial Bioremediation of Pesticides

