Arsenic Contamination Current Affairs - 2020

Light Weight Carbon Foam Batteries developed by CSIR

The researcher from Council of Scientific and Industrial Research (CSIR) has developed light carbon foam that will replace lead batteries. The carbon foam is easy to fabricate, non-toxic and affordable.


The researcher is a recipient of INSPIRE Faculty award. The material developed by the institute has the potential to replace lead-acid batteries. It is also useful to make heat sink, electromagnetic interference shielding in aerospace, electrode for lead-acid batteries, hydrogen storage and water purification systems.


The raw materials to make the carbon foam is easily available. It also helps to remove oil, arsenic and other metals from contaminated water.

Carbon Foam Batteries

The Carbon foams are porous. The pores in the batteries help increase efficiency. The micro cells completely make a new type of electrolyte structure. Hence, the power, energy and life cycle of the batteries increases.

How are carbon foam batteries better than Lead-acid batteries?

Carbon Foam batteries have better life cycle as compared to the lead-acid batteries. They are built three-fifth the cost of other advanced batteries.

India in Carbon Foam Batteries

The world’s first carbon foam manufacturing unit was set up in Gujarat in 2011. 20% of the produce in these industries are being exported and the rest are being used for electric vehicles.

Government inks $240 million loan agreement with ADB for WB Drinking Water Sector Improvement Project           

India and Asian Development Bank (ADB) signed $240 million loan agreement for West Bengal Drinking Water Sector Improvement Project to provide safe drinking water to people in three districts of West Bengal. The project aims at providing safe and sustainable drinking water to people in Bankura, North 24 Parganas and Purba Medinipur affected by arsenic, fluoride and salinity.

West Bengal Drinking Water Sector Improvement Project

The project will help mitigate health risks from using groundwater with elevated levels of arsenic and fluoride that can lead to health problems including cancer and bone diseases.  It will help to reduce burden of diseases from contaminated groundwater. It will also help to mitigate these risks through provision of continuous potable water through metered connections to about 390,000 individual households in three districts.

The project is also supported by grant of $3 million from Japan Fund for Poverty Reduction and $2 million grant from ADB’s Urban Climate Change Resilience Trust Fund. It will support state in strengthening its smart water management system, improve flood-related early warning and response and provide training on operation and maintenance as well as climate change and disaster resilience.