The Sheila Dikshit-led Congress government had issued a notification in October 2012 banning manufacture, sale, storage, usage, import and transport of all kinds of plastic carry bags.
The notification was challenged in the High Court by plastic manufacturers and the government is awaiting orders of the court so as to be able to implement the notification effectively, a government official said.
The AAP government wants a review of the decision which it said is being exploited to encourage rampant use of polythene bags. The court is slated to hear the matter soon.
The 2012 notification had expanded the scope of the ban and had done away with distinction between degradable and non-biodegradable plastic carry bags.
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The former are built with material which let them degrade in the presence of oxygen and sunlight. Although a few studies in the US and UK have disputed the claim, saying that lack of sunshine and high humidity comes in the way of their molecular breakdown.
Experts say that a ban on plastic bags, which is already in force in neighbouring states like Uttar Pradesh, will also help combat air pollution as garbage lands up in landfills which add to levels of particulate matter as well as noxious fumes when fires are lit there.