Do high pressure sodium lamps have mercury?
In a high pressure sodium lamp, a compact arc tube contains a mixture of xenon, sodium and mercury. … The mercury vapor raises the gas pressure and operating voltage, and the sodium vapor produces light when the pressure within the arc tube is sufficient.
How do you dispose of HPS bulbs?
Recycling and Disposal Guide. High-intensity discharge bulbs contain hazardous mercury and must be recycled at a free drop-off mercury lamp recycling site.
Are high pressure sodium lamps hazardous waste?
The ruling includes fluorescent, high-intensity discharge, neon, mercury vapor, high-pressure sodium, and metal halide lamps. The universal waste category applies to several common, widely dispersed hazardous wastes, including pesticides, batteries, thermostats, and now lamps.
What happens if you inhale mercury from a light bulb?
Mercury in CFLs are present as elemental (or metallic) mercury. Once inhaled, the mercury vapor can damage the central nervous system, kidneys, and liver. These toxic effects are why any mercury spill should be handled carefully, including one that results from a CFL breaking.
Do HID lamps contain mercury?
All commonly available fluorescent tubes and high-intensity discharge (HID) lamps contain mercury. The most common HID lamps are mercury vapor, metal halide, and high-pressure sodium lamps. … Lamps manufactured after 1994 contain less mercury—an average of a little less than 23 milligrams of mercury per 4-foot-long lamp.
What problems are associated with light bulbs that contain mercury?
The problem comes when a bulb breaks. Mercury escapes as vapor that can be inhaled and as a fine powder that can settle into carpet and other textiles.
Do LED light bulbs contain hazardous material?
Compact fluorescent bulbs, high intensity discharge bulbs (HID), and light emitting diode (LED) bulbs are hazardous and must NOT go in any trash, recycling, or composting bin.
What is a high pressure sodium lamp used for?
High pressure sodium lamps are used in outdoor lighting of streets and parking lots and in indoor settings where color rendering is not critical. These indoor settings include warehouse and shipping areas and some manufacturing areas.
What harmful chemicals are in light bulbs?
Mercury, an extremely toxic heavy metal, is used in fluorescent light bulbs to increase energy efficiency. In addition to mercury, some HID bulbs contain radioactive substances like Krypton-85 and thorium used for quick and easy light ignition.