With up to 100 million people drinking water with arsenic concentrations above the recommended limit of 10�g/l � the majority of whom are living in developing countries � there is a need for research into appropriate technological removal methods using natural resources such as solar power, and locally available materials. This research reports an investigation of using a Solar Oxidation and Removal of Arsenic (SORAS) process in a continuous flow reactor to photochemically oxidize As(III) to As(V). Small and large scale experiments were carried out on CPC reflectors focusing light into transparent tubing, using artificial UV lamps and natural sunlight. The main parameters investigated with regards to process efficiency were arsenic, iron, UV dose and citrate, as well as other water quality parameters. An investigation into an appropriate technology for the removal of precipitate, and the dissolution of iron from corrosion products for the required iron dose were also carried out.

Development of a continuous flow arsenic removal system using solar oxidation

245th National Meeting (2013)

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