Agriculture Business Week
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New findings in forestry described by J.Y. Lee and co-researchers
June 9th, 2008
"This study was carried out to develop a technology for the removal of fluorescent whitening agents (FWAs) from recycled fibers. Enzymatic treatment was evaluated as a method for removing fluorescent whitening agents from the recycled fibers," scientists in South Korea report.
"The a-amylase showed high efficiency in FWA removal by degrading surface sizing starch of fine papers which contained substantial amount of FWAs. The pH of the pulp suspension, which affects the solubility and affinity of FWA onto fibers, was a critical factor in FWA removal. It was found that maintaining an alkaline pH is required to prevent the readsorption of FWAs onto fibers. The temperature of...
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Source: Agriculture Business Week (2008-06-09)