After the initial fuel charge such a reactor can be refueled by nuclear reprocessing.
This is the chemistry associated with any part of the nuclear fuel cycle, including nuclear reprocessing.
Both nuclear reprocessing and breeder reactors could reduce the amounts of waste.
Both also banned the development of nuclear reprocessing and uranium enrichment facilities.
But judgments about the pace and extent of nuclear reprocessing require additional information.
They plan a protest demonstration this week at Sellafield, site of the world's largest nuclear reprocessing plant.
It raises the perfectly legitimate question of whether nuclear reprocessing should continue at Sellafield.
Ion exchangers are used in nuclear reprocessing and the treatment of radioactive waste.
Many also see uranium mining and nuclear reprocessing as bad, because of the environmental risks of these activities.
See the article on nuclear reprocessing for more information.