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Study On Preparation Of New-type Photo-catalyst Iron Nitrogen Complex And Its Application In The Degradation Of Acrylic Fiber Wastewater Under Visible Light Irradiation

Posted on:2009-07-06Degree:MasterType:Thesis
Country:ChinaCandidate:X J LiFull Text:PDF
GTID:2121360245999883Subject:Environmental Science
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Aiming to search methods and develop a sort of catalyst of handling Acrylic Fibers wastewater more effectively, two sorts of solid-phase catalyst were prepared, the loading conditions of preparing catalyst and affecting factor of treating the wastewater were investigated in the process of photocatalytic degradation of Acrylic Fibers wastewater.A new solid-phase Fenton-type catalyst of high photocatalytic activity, high stability and dispense with separation were prepared, which is made from loading the iron solution onto the resin. The best loading conditions of preparing catalyst and affecting factor of treating wastewater were investigated in the process of photocatalytic degradation of Acrylic Fibers wastewater.The best conditions of preparing catalyst are as follows: loading ferrous solution onto the resin of polystyrene / divinylbenzene the chelating resin (D463). The best reaction condition of treating wastewater: the concentration of H2O2 is 55mmol·L-1, the amount of catalyst is 10g·L-1, the pH range is 3-5, the ratio of COD degradation is up to 48.95%.It becomes a efficient, simple mobile treatment system which dispense with pre-treating the wastewater pH and achieve zero emissions of ferrous ion by this catalyst in Fenton photocatalytic system.A new solid-phase type catalyst of high visible light photocatalytic activity, high stability and dispense with separation were prepared, which is made from loading the ferrous nitrogen complexe solution onto the resin. The best loading conditions of preparing catalyst and affecting factor of treating wastewater were investigated in the process of photocatalytic degradation of Acrylic Fibers wastewater.The best conditions of preparing catalyst are as follows: 1,10 phenanthroline and Fe2+ formate organic ion complex was exchanged into cationic exchange resin with Polyallylmethacrylate, PMMA/divinylbenzene. Per gram of resin can be loaded 6×10-4mol of organic complex. The best molar ratio of phenanthroline / Fe2+ is 2:1 in a range of pH (3~3.5) when referred to acrylic fiber wastewater treatment, the concentration of H2O2 is 44mmol·L-1, and the amount of catalyst is 5g·L-1. After four hours'irradiation the COD degradation of acrylic fiber wastewater rate up to 68.7%.From the experiment, the best reaction condition of treatment on the wastewater of Acrylic by Fenton and UV/Fenton was got. By comparison, solid-phase catalyst in treating the wastewater have been improving in the aspects of the recovery and utilization, COD degradation rate, responsibility of visible light and biodegradation rate.
Keywords/Search Tags:Photocatalytic, Acrylic fiber wastewater, Load, Ferrous nitrogen complex
PDF Full Text Request
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