Novel materials and processes have been developed that can be used to remove arsenic from drinking water and semiconductor manufacturing waste and can also remove phosphate from aquaria with high efficiency. One technology is unusual iron and iron/zinc oxide oxyhydroxide phases that have high capacity for arsenic sorption.  Another approach is metal organic coordination polymers with startlingly high capacity for arsenic that are also amenable to developing processes for a one-step treatment of highly acidic concentrated gallium arsenide aqueous waste stream. It is possible to recover the arsenic through a thermal process so that it may be reused. To close the cycle, the iron and other metal ions may also be recycled.

New technologies for arsenic and phosphate remediation

246th National Meeting (2013)

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