The relatively inert nature of rocks has been exploited in many methods to immobilize chemical and / or radioactive wastes; the Australian researcher, A . E . Ringwood, developed a titanate ceramic called Synroc, his acronym for " synthetic rock ".
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For example, Synroc-C is designed to contain about 20 wt . % of calcined HLW and it consists of approximately ( in wt . % ) : 30 hollandite; 30 zirconolite; 20 perovskite and 20 Ti-oxides and other phases.
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In 2015 he told the " Australian Financial Review " that " The social licence is an issue, but the science and technology is not . " He has also stated that there are likely to be synergies between unconventional gas and waste storage interests in the future, possibly building upon synroc technology.
