ENVIRONMENTAL, HEALTH AND SAFETY ISSUES RELATED TO THE PRODUCTION AND USE OF CdTe PHOTOVOLTAIC MODULES

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Abstract
This paper examines environmental, health and safety issues associated with the production and use of CdTe photovoltaic modules. Handling of Cd and Te in photovoltaic production can present hazards to health, safety and the environment. Prior recognition of these hazards can allow device manufacturers time to implement appropriate hazard management strategies. The most important health hazards are probably related to chronic low-level exposures to Cd, especially to workers in manufacturing facilities. Because of the long latency period associated with the development of health effects arising from such exposures, and the availability of environmental and biomonitoring protocols, such hazards can be monitored and controlled. The true hazard presented by CdTe is very uncertain because characterizations of its inherent biological toxicity are based on extrapolation of data from other Cd compounds. Technical and institutional mechanisms for the recycling of spent CdTe modules may be needed to ensure public acceptance of this material option and to eliminate expensive disposal costs.

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