Figure 18. Graphic Representation of the Data Collected on the Consumer Behaviour with EEE and Replacement Batteries at End of Use
This result is confirmed by a detailed analysis of the batteries contents of MSW measured in the french countryside in the vicinity of Paris (November 1999). In 8,900 tonnes of MSW, the quantity of portable rechargeable batteries identified represented less than 5% of the volume introduced during the same year on the market (SCRELEC -Michaux 1999)
A more recent study performed on 10,000 tonnes of MSW by STIBAT (STIBAT -Bartels-1999) in the Netherlands has revealed that less than 10% of the portable rechargeable batteries are found in the MSW.
This study, like another made previously in Japan (Fujimoto 1999 and 2001) shows that the concept of average lifetime of a battery is not appropriate. Indeed, it is observed that more than 90% of the equipment purchased within the last ten years is still at home, either in use or not.
The most appropriate concept to evaluate the success of spent battery collection campaigns or programs is the collection efficiency that is based on measured data: the quantity of batteries present in waste (municipal solid and other industrial waste) and the quantity collected on a national basis from the various collection sources.
In this respect, this study demonstrates the coherence between data collected from two different sources: the measurement of quantities of batteries present in MSW and the evaluation of the quantities available for collection by this type of consumer survey. This study also confirms that the quantities of batteries purchased with equipment and left in hoarding remain the largest fraction of batteries introduced into the market during the last 10 years. It can be concluded that an efficient collection system should take into consideration several factors:
the large potential stock to collect,
- the low level of willingness of the consumer to eliminate the equipment,
- the need to control this hoarding by an appropriate public awareness campaign,
- the joint effort needed in collecting WEEE and spent batteries incorporated and/or sold to power this equipment.
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