Photocatalysis bio-adsorbent and preparing method and application thereof

A biosorbent and 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 efficiency of adsorption and degradation of organic pollutants , to achieve high photoelectron conversion rate, high photocatalytic efficiency, and strong structure

Active Publication Date: 2016-11-23
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Photocatalysis bio-adsorbent and preparing method and application thereof
  • Photocatalysis bio-adsorbent and preparing method and application thereof
  • Photocatalysis bio-adsorbent and preparing method and application thereof

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. Such as Figure 4 Shown, for the compound waste water that initial concent...

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Abstract

The invention discloses a photocatalysis bio-adsorbent and a preparing method and application thereof. The photocatalysis bio-adsorbent comprises phanerochaete chrysosporium balls, graphite type C3N4 and calcium alginate, wherein graphite type C3N4 is wrapped in hyphae of the phanerochaete chrysosporium balls through calcium alginate. The preparing method comprises the steps of adding graphite type C3N4 to sodium alga acid solution for ultrasonic dispersion, then adding phanerochaete chrysosporium spore suspension, conducting uniform mixing, adding obtained mixed solution to calcium chloride solution dropwise for hardening, and conducting shake cultivation on embedding spheres obtained after hardening so as to obtain the photocatalysis bio-adsorbent finally. The photocatalysis bio-adsorbent has the advantages of being high in photocatalysis capacity, high in adsorption efficiency, low in cost, convenient to separate and recover and the like. The photocatalysis bio-adsorbent can be used for treating composite waste water containing cadmium and 2,4,6-trichlorophenol, the heavy metal cadmium and the organic pollutant 2,4,6-trichlorophenol in waste water can be removed at the same time, and adsorption 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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IPC IPC(8): C02F3/34B01J31/06C02F101/36C02F101/20
CPCB01J31/069B01J35/004C02F1/288C02F1/30C02F3/341C02F2101/20C02F2101/36
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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