Assessment of Heavy Metal Removal Efficiency of lemnaminor

Waste water treatments through ‘conventional methods’, which rely on heavy aeration, are expensive to install and operate as well as waste generated from such technologies possessed a great hazards to the ecosystem. Phytoremediation is a novel technology for wastewater treatment as well as heavy metal removal.Most of the heavy metals are toxic or carcinogenic in nature and may pose a threat to human health and the environment at higher concentrations. This review paper illustrating the efficiency of lemna minor (common Duckweed) for heavy metal removal. Any aquatic plant that is capable of recovering or extracting nutrients or pollutants and has a fast growth rate coupled with high nutritive value is an excellent candidate for bio-remediation of waste waters. Lemnaminor appear to be the better alternative and have been recommended for wastewater treatment as they are more tolerant to cold than water hyacinth as well as more easily harvested than algae, and  capable of rapid growth. The aim of the paper is oriented towards eco-friendly, low cost wastewater treatment with the use of Lemnaminor plant for the benefit of the society.