The five-day conference on the resort island of Bali ended late Friday with a coalition of countries again stalling the ban proposal, Agus Purnomo said.
"The problem is we have almost a dozen countries who are definitely against the ban amendment and they will not make a ban legal," Purnomo said.
Rich countries such as the United States and Japan have opposed amending the Basel Convention, which governs the international movement of waste, to produce the ban.
So far only 62 of the necessary 130 countries have ratified the proposed amendment, Purnomo said.
Despite little movement over the ban issue, conference delegates declared they had agreed to "contribute to a new momentum to achieve objectives (of the Basel Convention)."
Purnomo said the declaration was a breakthrough as it set the basis for countries to tackle the waste trade voluntarily through capacity building and recylcing programmes.
"This was the re-energising consensus that we were able to achieve in Bali," he s