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| Study on the Treatment of AOX in Bleaching Wastewater by Metal Organic Framework Supported Phosphomolybdic Acid |
| Received:September 20, 2020 |
| DOI：10.11980/j.issn.0254-508X.2021.01.001 |
| Key Words:phosphomolybdic acid metal organic framework hydrogen peroxide adsorbable organic halides（AOX） wastewater treatment |
| Fund Project:国家自然科学基金项目（21466004）；广西大学科研基金（XJZ160945）。 |
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| Abstract:The supported catalyst （PMA@UiO-66） was prepared by encapsulating phosphomolybdic acid （PMA） with zirconium metal organic framework （UiO-66） and its structure was characterized by FT-IR， XRD， BET， SEM， TG， XPS and other means.The degradation of pulping and bleaching wastewater by PMA@UiO-66 under H2O2 action was analyzed and adsorbable organic halides（AOX） changes in wastewater were discussed. The recycle and stability of supported catalyst were studied.The results showed that the PMA was successfully loaded on the metal skeleton， which did not destroy the UiO-66 crystal structure of the metal skeleton. The supported catalyst had large specific surface area and pore size， which was conductive to the entry of pollutants into the active site. Under the action of PMA@UiO-66/H2O2， the removal rate of AOX and TOC in bleaching wastewater could reach 55.7% and 60.0%， respectively.Supported catalyst PMA@UiO-66 showed good reuse and stability， after four cycles， its removal rate towards AOX could till reach to 51.8%， and the structure of PMA@UiO-66 did not change before and after the reaction. |
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