OSAKA -- The Osaka Municipal Government began a separate collection for plastic bottles Oct. 1 to enable such containers to be recycled.Starting this month, the city will collect polyethylene terephthalate, or PET, bottles once every two weeks along with cans, glass bottles and other containers that are already collected separately as recyclable waste.The city plans to collect 1,100 tons of plastic bottles in a half-year period for recycling. The Law for Promotion of Sorted Collection and Recycling of Containers and Packaging, which was enacted in April, states that if a local government decides to start separate collection of containers, manufacturers are obliged to take them and recycle them.