Whiskey Byproduct Purifies Arsenic-Contaminated Water

Jan-03-14 A researcher has developed a technique that uses a byproduct of whiskey production to help purify water contaminated by arsenic.

The technique was created by Dr. Leigh Cassidy, who used the leftover residue of barley husks, called draff, as one of the cleaning agents to filter out arsenic from industrially contaminated water. The process involves modifying the draff with an ingredient that Cassidy is keeping secret, which transforms it into a cleaning agent. The draff then features as one of the ingredients in the device created by Cassidy called Dram, which combines the altered draff with local ingredients like coconut shells or rice husks that function as an organic filter to trap the arsenic.

The arsenic crisis in Bangladesh has reached a critical level, and is attributed to one in five deaths in the area. The Dram system is easy to use and can be incorporated in already existing tube wells, offering a low-cost and environmentally friendly option.

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