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Photocatalytic biosorbent and its preparation method and application

A biosorbent, photocatalytic technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problems of low adsorption and organic pollutant degradation efficiency , to achieve the effect of high photoelectron conversion rate, high photocatalytic efficiency and high biological activity

Active Publication Date: 2019-03-22
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phanerochaete chrysosporium among the white-rot fungi has a strong adsorption effect on heavy metals. However, in the complex polluted wastewater containing heavy metals and organic pollutants, the adsorption of Phanerochaete chrysosporium to heavy metals and the degradation of organic pollutants low efficiency

Method used

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  • Photocatalytic biosorbent and its preparation method and application
  • Photocatalytic biosorbent and its preparation method and application
  • Photocatalytic biosorbent and its preparation method and application

Examples

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Embodiment 1

[0032] A kind of photocatalytic biosorbent of the present invention, this photocatalytic biosorbent comprises Phanerochaete chrysosporium bacterial ball, graphite type C 3 N 4 and calcium alginate; graphite type C 3 N 4 The hyphae of Phanerochaete chrysosporium balls are coated by calcium alginate.

[0033] A preparation method of the above-mentioned photocatalytic biosorbent of the present embodiment, comprising the following steps:

[0034] (1) Weigh 5g of urea into a 50mL crucible, cover the lid, and then wrap it tightly with tin foil; place the above sample in the middle of the muffle furnace for calcination. The calcination is specifically as follows: heating the urea from room temperature to 600° C. at a heating rate of 5° C. / min, and then keeping the temperature at 600° C. for calcination at a constant temperature for 2 hours. After cooling in the air, grind the sample in a mortar for 3 minutes, the resulting bright yellow powder is graphite type C 3 N 4 Material. ...

Embodiment 2

[0049] A kind of photocatalytic biosorbent of the present invention, this photocatalytic biosorbent comprises Phanerochaete chrysosporium bacterial ball, graphite type C 3 N 4 and calcium alginate; graphite type C 3 N 4 The hyphae of Phanerochaete chrysosporium balls are coated by calcium alginate.

[0050] A preparation method of the above-mentioned photocatalytic biosorbent of the present embodiment, comprising the following steps:

[0051] (1) Weigh 5g of urea into a 50mL crucible, cover the lid, and then wrap it tightly with tin foil; place the above sample in the middle of the muffle furnace for calcination. The calcination is specifically as follows: heating the urea from room temperature to 600° C. at a heating rate of 5° C. / min, and then keeping the temperature at 600° C. for calcination at a constant temperature for 2 hours. After cooling in the air, grind the sample in a mortar for 3 minutes, the resulting bright yellow powder is graphite type C 3 N 4 Material ...

Embodiment 3

[0057] A kind of application of the photocatalytic biosorbent of the present invention in the treatment of cadmium-containing and 2,4,6-trichlorophenol composite wastewater comprises the following steps:

[0058] To 100mL of cadmium and 2,4,6-trichlorophenol composite wastewater containing cadmium and 2,4,6-trichlorophenol with an initial concentration of 10mg / L and an initial concentration of 2,4,6-trichlorophenol, add 1g of the light compound prepared in Example 1. Catalyzed biosorbent S1 was placed in a shaking incubator, under the condition of 37°C and 150r / min for 72 hours of adsorption and degradation under light, and solid-liquid separation after standing to complete the adsorption and degradation of composite wastewater.

[0059] Figure 4 It is a picture of the removal effect of cadmium and 2,4,6-trichlorophenol by the photocatalytic biosorbent in this example under different treatment times. like Figure 4 Shown, for the compound waste water that initial concentrat...

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Abstract

The invention discloses a photocatalytic biosorbent and its preparation method and application. The photocatalytic biosorbent includes Prochaeta chrysosporium pellets, graphite type C 3 N 4 and calcium alginate, graphite type C 3 N 4 Calcium alginate is used to coat the hyphae of P. chrysosporium cocci. The preparation method includes: converting graphite type C 3 N 4 The material is added to the sodium alginate solution for ultrasonic dispersion, and then the spore suspension of P. chrysosporium is added and mixed evenly. The resulting mixed solution is added dropwise to the calcium chloride solution to harden. After hardening, the embedded pellet is obtained for shaking culture. A photocatalytic biosorbent was obtained. The photocatalytic biosorbent of the present invention has the advantages of strong photocatalytic ability, high adsorption efficiency, low cost, convenient separation and recovery, etc. It can be used to treat composite wastewater containing cadmium and 2,4,6-trichlorophenol, and can simultaneously remove wastewater The heavy metal cadmium and organic pollutant 2,4,6-trichlorophenol are contained in it, and the adsorption and degradation efficiency is high.

Description

technical field [0001] The invention belongs to the field of photocatalytic biosorbent materials, and relates to a photocatalytic biosorbent and its preparation method and application, in particular to Phanerochaete chrysosporium and graphite type C 3 N 4 Photocatalytic biosorbents of materials and their preparation methods and applications. Background technique [0002] At present, methods such as adsorption, coagulation, and biofilm are usually used to treat heavy metal wastewater. These methods are generally favored by people because of their low cost. Phanerochaete chrysosporium among the white-rot fungi has a strong adsorption effect on heavy metals. However, in the complex polluted wastewater containing heavy metals and organic pollutants, the adsorption of Phanerochaete chrysosporium to heavy metals and the degradation of organic pollutants low efficiency. Graphite C 3 N 4 The material is a typical photochemical catalyst, which can catalyze and degrade organic po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34B01J31/06C02F101/36C02F101/20
CPCC02F1/288C02F1/30C02F3/341B01J31/069C02F2101/20C02F2101/36B01J35/39
Inventor 曾光明胡亮陈桂秋万佳武海鹏于志刚郭志黄真真何凯王利超
Owner HUNAN UNIV
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