Arsenic and cadmium removal from contaminated water by excised root and shoot of Micranthemum umbrosum plant


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Arsenic and cadmium removal from contaminated water by excised root and shoot of Micranthemum umbrosum plant

Md. Shariful Islam1,2*, Masaaki Kurasaki1,3, Shunitz Tanaka1,3

HIGHLIGHTS

  • Excised root and shoot of umbrosum were applied to accumulate As and Cd.
  • Excised shoot absorbed higher amount of As and Cd compared to that of excised root.
  • umbrosum plants were used in excised condition or Ikebana style.
  • It is an easy and economic way to remove As and Cd from water environment.

ABSTRACT

The metalloid arsenic (As) and heavy metal cadmium (Cd) are hazardous toxic elements and major concern due to their accumulation in soil and water environment and contaminate the food chain. The use of plants to remediate contaminated sites, known as phytoremediation, has been recognized as environment friendly and low cost technology compared to other traditional technologies. This work examines the potential application of excised root and shoot of Micranthemum umbrosum plant to accumulate As and Cd from the contaminated water environment rather than the whole plants. The excised root and shoot were exposed to 500 μg As l-1 and 400 μg Cd l-1 water in dark and normal conditions. After 7 days of hydroponic experiments, samples were analyzed for As and Cd absorption and removal efficiency. The excised shoot absorbed higher amount of As (159.64 µg g-1 oven dry basis) and Cd (105.29 µg g-1 oven dry basis) compared to that of excised root but lower than the whole plant culture at normal condition (700 and 350 µg g-1 As and Cd, respectively). Excised shoot removed 48.06 and 52.26% of As and Cd, respectively from the As and Cd incubated water. All plants were died and rotten at dark culture after a week. The findings of this research will help for further investigation using other plants at excised condition for remediation of two utmost toxic elements from contaminated water in a very easy and economic way.

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To cite this article: Islam MS, Kurasaki M, Tanaka S. Arsenic and cadmium removal from contaminated water by excised root and shoot of Micranthemum umbrosum plant. Journal of Desalination and Water Purification 2016;4:3-7.

To link this article: http://ababilpub.com/download/jdwp4-2/