Some said the number of submissions represented progress, while campaign group Greenpeace said it was "chaos".
Greenpeace said a successful deal would require the United States and the European Union to show greater leadership than they have so far.
The International Pollutants Elimination Network (IPEN), a global network of non-governmental organisations, however, said the proposals reflected the robustness of the Nairobi talks.
Less than 10% of the plastic waste is recycled, the U.N.
Members of the Saudi delegation at the talks declined to talk to Reuters, while Russian delegates could not immediately be reached for comment.
Persons:
INC3, Graham Forbes, IPEN, Duncan Miriri, George Obulutsa, Barbara Lewis
Organizations:
Greenpeace, Plastics, United Nations, Kenyan, European Union, International Union for Conservation, Nature, European, Saudi, Thomson
Locations:
NAIROBI, Russia, Saudi Arabia, United States, Nairobi, Switzerland, Uruguay, Canada, Kenya, European Union