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Method for separating out phenols substances in water by catalytic oxidation with enzyme-carrying silicon-based mesoporous molecular sieve SBA-15

A catalytic oxidation, silicon-based mesoporous technology, applied in chemical instruments and methods, oxidized water/sewage treatment, fixed on or in inorganic carriers, etc., can solve many problems and achieve the effect of good reusability

Inactive Publication Date: 2009-11-11
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are not many reports on the immobilization of HRP with mesoporous molecular sieves, and there are still no reports on the immobilization of HRP with SBA-15 and its use in phenol treatment in water.

Method used

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  • Method for separating out phenols substances in water by catalytic oxidation with enzyme-carrying silicon-based mesoporous molecular sieve SBA-15
  • Method for separating out phenols substances in water by catalytic oxidation with enzyme-carrying silicon-based mesoporous molecular sieve SBA-15
  • Method for separating out phenols substances in water by catalytic oxidation with enzyme-carrying silicon-based mesoporous molecular sieve SBA-15

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Embodiment 1

[0022] Embodiment 1: see attached figure 1 process flow chart. First, prepare SBA-15 under normal temperature conditions. The block copolymer P123 is used as the template agent, and tetraethyl orthosilicate is used as the silicon source. First weigh 2g of P123 into a beaker, then add 15g of water and 60g of 2M hydrochloric acid solution, stir at 35°C until P123 is completely dissolved, then add 4.25g of TEOS, and keep stirring at 35°C for 20h. Subsequently, the reactant was transferred to a polytetrafluoroethylene-lined reactor and reacted at 80°C for 24 hours. Finally, the solid product was collected, washed with water, and dried at room temperature. Slowly raise the temperature to 500°C within 8 hours, and calcine at constant temperature for 6 hours. The calcined powder is SBA-15 with pores. Add 0.4 g of the prepared SBA-15 into 30 ml of phosphate buffer solution with a pH value of 8, place it on a constant temperature magnetic stirrer and stir for 1 h to make it unifor...

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Abstract

The invention relates to a method for separating out phenols substances in water by catalytic oxidation with an enzyme-carrying silicon-based mesoporous molecular sieve SBA-15, which belongs to the technical field of application of immobilized enzyme biocatalyst. The method comprises the following steps of: using the silicon-based mesoporous molecular sieve SBA-15 as a carrier, fixing horse radish peroxidase (HRP) simultaneously in the mesoporous duct and the external surface of the SBA-15, using H2O2 as an oxidant, and using the mechanism that the HRP performs catalytic oxidation to the phenols compound to generate sedimentary so as to achieve the aim of separating out phenols pollutants in water. The method can achieve the favorable effect of removing phenols in water under the assistance of solid-liquid separation means. The produced enzyme-carrying SBA-15 has favorable reusability, in particular to the enzyme-carrying SBA-15 after twice fossilization, and the phenols pollutant still can achieve a removal rate of above 60 percent after the enzyme-carrying SBA-15 is reused for six times.

Description

technical field [0001] The invention relates to a method for catalytic oxidation and precipitation of phenolic substances in water by using enzyme-carrying silicon-based mesoporous molecular sieve SBA-15, which belongs to the technical field of immobilized enzyme biocatalyst application. Background technique [0002] Phenol-containing wastewater mainly comes from industrial sectors such as coking plants, gas plants, petrochemical plants, and insulation material plants, as well as production processes such as petroleum cracking to ethylene, synthetic phenol, polyamide fibers, synthetic dyes, organic pesticides, and phenolic resins. Phenolic compounds are common organic pollutants in the water environment. They are polar, ionizable, weakly acidic organic compounds, and are protoplasmic poisons. Long-term drinking of phenol-contaminated water can cause chronic cumulative poisoning. Even if the concentration of phenol in drinking water is only 0.002mg / L, it will affect human hea...

Claims

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Application Information

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IPC IPC(8): C02F1/58C02F1/72C01B39/02C12N11/14C02F101/34
Inventor 胡龙兴徐佳佳党松涛杨霞萍陆永生
Owner SHANGHAI UNIV
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