Why in News?

=> In a recent research, scientists from IIT (ISM) Dhanbad have succeeded in developing an adsorbent that helps in removing arsenic from groundwater.

Key Points:

=> Associate Professor of Environmental Science Engineering Department Dr. S.R.

=> A four-member team of researchers led by Samaddar claims that arsenic can be removed through the coating of nano-manganese on calcinated laterite soil arsenic.

=> Researcher Roshan Prabhakar and two MTech students Somparna Ghosh and Ali helped in the research.

=> Dr. Samaddar pointed out that arsenic has been identified as a first-class human carcinogen and the World Health Organization has set its permissible limit in drinking water at 10 micrograms per litre.

=> Dr. Samaddar said that we have developed an absorption based scalable treatment system for the resource deprived community living in rural areas .

=> He said that nano-based adsorption systems have been popular among researchers for the removal of arsenic ions, but since nano-absorbers are expensive to synthesize, this research uses cheap and readily available laterite soil as the base material for nano coating.

=> Dr. Samaddar pointed out that the treatment of 1000 liters of water with a concentration of 200 ppb requires about 0.70 kg of laterite nano manganese, most of which contains laterite clay particles.

=> It can help in removing arsenic from groundwater in different parts of the country on a percentage basis.