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A kind of biosorbent, preparation method and use

A biosorbent, a technology for use, applied in the field of environmental pollution control, can solve problems such as unsatisfactory wastewater treatment effects, and achieve the effects of easy separation, strong hydrophilicity, and large specific surface area

Active Publication Date: 2017-01-11
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the biological method for the degradation of organic matter mainly adopts bacterial degradation. Since bacteria are sensitive to heavy metals, the treatment effect for wastewater with double pollution of heavy metal pollution and organic pollutants is not ideal.

Method used

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  • A kind of biosorbent, preparation method and use
  • A kind of biosorbent, preparation method and use
  • A kind of biosorbent, preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 : As a preferred embodiment of the present invention, a kind of biosorbent is provided, comprising magnetic particle 01, Penicillium brevius powder 02, sodium alginate 03, wherein the mass ratio of magnetic particle 01, Penicillium brevius 02, sodium alginate 03 The ratio is 1:5:20, sodium alginate 03 is coated on Penicillium simpleum 02, and Penicillium simplex 02 is coated on magnetic particles 01.

[0028] Among them, the magnetic particle 01 is Fe 3 o 4 Nanoparticles.

[0029] Embodiment 1 is only a preferred embodiment of the present invention. In the present invention, the mass ratio of magnetic particles 01, Penicillium brevius powder 02, and sodium alginate 03 is not limited to 1:5:20. can be implemented.

[0030] figure 2 It is the shape of the biosorbent in Example 1 under an electron microscope. image 3 It is the surface structure of the biosorbent in Example 1 under an electron microscope.

Embodiment 2

[0032] Such as Figure 4 As shown, the preparation method of biosorbent of the present invention specifically comprises the following steps:

[0033] 1) Preparation of Penicillium jejunum powder 02: Sterilize the liquid culture medium (the composition of the aforementioned liquid culture medium is shown in Table 1) at 115° C. for 20 minutes, and then cool it down to room temperature under aseptic conditions. Inoculate the Penicillium simplex cells into the aforementioned sterilized and cooled liquid culture medium, and culture in a shaking incubator at a temperature of 28° C. and a rotational speed of 150 r / min for 48 hours. After the shaking culture is over, take the logarithmic growth phase of Penicillium chinensis and filter it with silk cloth, take the filter residue and wash it with deionized water for 3 times, then scrape off the cells left on the silk cloth, grind it into powder after freeze-drying to obtain Jianqing Mold powder 02.

[0034] Table 1 Liquid Medium Comp...

Embodiment 3

[0040] 1) Biosorbent adsorption: 1.37g of the biosorbent of Example 1 (the constant weight of 1.37g of the biosorbent after drying at 65°C is 0.1g) was added to 100ml, and the concentration was 50mg / L of Cd 2+ , in a phenol complex solution with a concentration of 25 mg / L, shaken for 48 hours at a pH of 5, a temperature of 35°C to 40°C, and a rotation speed of 150rpm, Cd 2+ The concentration decreased to 6.125mg / L, the concentration of phenol decreased to 1.322mg / L, and the removal rates were 87.75% and 94.71%, respectively. Filter the biosorbent, desorb the biosorbent with 100ml of hydrochloric acid solution with a concentration of 1mol / L at a temperature of 37°C and a rotating speed of 150rpm for 24h, and the Cd 2+ The desorption rate of phenol reaches 91.34%, and the desorption rate of phenol reaches 92.13%.

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Abstract

The invention belongs to the field of environmental pollution control, and particularly relates to a bio-adsorbent, a preparation method and application. The bio-adsorbent comprises magnetic particles, penicillium simplicissimum powder and sodium alginate, wherein the sodium alginate covers the penicillium simplicissimum powder and the penicillium simplicissimum covers the magnetic particles. The preparation method of the bio-adsorbent specifically comprises the following steps: adding the penicillium simplicissimum powder and the magnetic particles into the sodium alginate solution, and agitating the mixture to obtain a mixed solution; and dropwise adding the mixed solution into a calcium chloride solution to obtain the bio-adsorbent. The penicillium simplicissimum powder and the magnetic particles are used as the adsorbent, sodium alginate is used as an embedding carrier, and the penicillium simplicissimum powder, the magnetic particles and sodium alginate supplement one another, so that heavy metal and / or organic pollutants in water can be effectively removed. The bio-adsorbent has the advantages of high removal efficiency, wide adaptability, strong selectivity, simplicity in operation, low raw material cost, renewability and the like.

Description

technical field [0001] The invention belongs to the field of environmental pollution control, and specifically relates to a biosorbent, a preparation method and an application. Background technique [0002] At present, with the development of industry, coking, oil refining, petrochemicals, chemical fertilizers and pesticides, manufacturing of plastics, and waste gas and waste water generated during fuel combustion are discharged into the environment, causing complex pollution of heavy metals and organic pollutants, resulting in production and living environments. The pollution of metals and organics is becoming more and more serious, and people's demand for the treatment of metal and organic pollution is imminent. [0003] At present, the methods for treating heavy metal or organic waste water mainly include: chemical precipitation and activated carbon adsorption, ion exchange and ozone oxidation, electrochemical treatment, reverse osmosis membrane technology, distillation, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F3/34C02F1/28
Inventor 徐卫华谢浩刘云国简浩顾岩岭王达菲谭小飞
Owner HUNAN UNIV
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