Refrigerator appliance and methods of operation

A method of operating a refrigerator appliance comprising a cabinet defining a chilled chamber, a storage bin defining a storage volume, a lid positioned on the storage bin to selectively cover the storage volume in a closed position, an ozone passage defined through at least one of the plurality of walls in fluid communication with the storage volume, an air conduit disposed in selective fluid communication with the ozone passage, an air handler disposed in fluid communication with the air conduit to direct ozone through the ozone passage, a first ozone filter disposed in fluid communication with the air conduit to filter ozone passing from the storage volume through the air conduit, a second ozone filter positioned on the lid above the storage volume, the method comprising:

• receiving a closed lid signal from a position sensor in operable communication with the lid;
• initiating a supply flow of ozone in a first flow direction from the air conduit to the storage volume in response to receiving the closed lid signal;
• receiving an ozone evacuation command;
• and
• initiating an evacuation flow of ozone in a second flow direction from the storage volume to the air conduit in response to receiving the ozone evacuation command.