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New Technique Cheaply and Quickly Eliminates 99.0% BPA from Water

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Published on : Aug 04, 2017

Terrence J. Collins of Carnegie Mellon University has developed a novel technique that could potentially free water from a 99.0% of harmful bisphenol A (BPA). Along with Oregon State University and University of Auckland collaborators, Collins and his research team have also collected evidence of the presence of BPA in scores of water sources and other products, besides the toxicity of the chemical. This has been published in a paper included in the journal Green Chemistry.

TAML and Hydrogen Peroxide Helped Reduce 99.0% BPA in 30 Minutes

Collins and his researchers have demonstrated the safety and efficacy of tetra-amido macrocyclic ligand (TAML) activators in executing the breakdown of BPA in the current 25-page paper. Mimicking oxidizing enzymes, small molecule TAML activators are a group of catalysts that have been used by the Collins team to offer a cheap, an effective, and a simple cleanup solution. Within just 30 minutes, the team said it has achieved a 99.0% BPA reduction at a near neutral pH with the addition of TAML and hydrogen peroxide to a sample of heavily contaminated water. At this pH, the TAML treatment has been able to accumulate BPA into oligomers, which are large units that could clump together and precipitate out of the water. The oligomers, according to Collins, could be disposed of and also filtered in a BPA water treatment outlet.

After testing the TAML-treated BPA water with oligomers with the help of Tiered Protocol for Endocrine Disruption (TiPED) assays, it has not caused abnormality nor shown sign of estrogen activity in developing zebrafish embryos and yeast.