Water purification research

Water purification research

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Credit: JERRY MASON/SCIENCE PHOTO LIBRARY

Caption: MODEL RELEASED. Water purification research. Chemical engineer Chedly Tizaoui using a laptop computer to study the organic pollutant-destroying effect of ozone beads (in dish at centre left). The beads are put in a column to treat waste water or industrial effluent passed through it. Each of the 2 millimetre-diameter silica beads has ozone, a highly reactive form of oxygen, adsorbed on its surface. This technique is ten times more potent than pumping ozone through waste water, where lit- tle of the ozone dissolves and attacks the pollut- ion. Once the ozone is used up, the beads must be recharged. Tizaoui heads the team from Bradford University, UK, that developed the process.

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Keywords: britain, british, chedly, chemical engineering, chemistry, contaminant, contaminated, contamination, england, english, industrial effluent, laptop computer, male, man, organic, ozone, pollutant, pollution treatment, purification, researcher, scientist, sewage, silica gel beads, tizaoui, uk, united kingdom, university of bradford, water industry

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