India, Sept. 9 -- Down To Earth brings you the top environmental cases heard in the Supreme Court, the high courts and the National Green Tribunal

Disposal of spent catalysts

The Central Pollution Control Board (CPCB) submitted its report to the National Green Tribunal (NGT) September 8 on unscientific disposal of spent catalysts by oil refineries in India. Spent catalysts are categorised as hazardous waste and contain nickel, cadmium, zinc, copper, arsenic, vanadium and cobalt.

This has been categorised under list of common recyclable hazardous wastes at Schedule IV of Hazardous Waste Management Rules (HOWM), 2016.

Synopsis of the CPCB report:

The committee observed that spent catalyst, quantity and disposal method was not defined c...