| Abstract
| - Hollow chitosan fibers were reacted with chloro−palladate solutions and subsequently reduced by hydrogenproduced in situ by reaction of sulfuric acid with zincpowder in order to manufacture palladium supported oncatalytic hollow chitosan fibers (C2HF−Pd). This catalyticsupport was used to degrade 3-nitrophenol (3-NP) using twodifferent hydrogen donors (hydrogen gas and sodiumformate). The solution was flowed through the lumen ofthe fiber, while the sodium formate was recirculated roundthe outside of the fiber. In the case of hydrogen gas, thegas was maintained under controlled pressure outside thefiber. The influence of the pH, residence time (ca. flowvelocity), nitrophenol concentration, and hydrogen-donorconcentration (or pressure) was investigated for both systemsin order to evaluate the limiting parameters. While thesystem using sodium formate was the most efficient fornitrophenol conversion, the system using hydrogengas avoided the production of secondary waste solutions(formate solutions with traces of nitrophenol, whichpass through the fiber membrane).
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