Keratin heavy metal adsorbent and preparation method thereof

A keratin and heavy metal technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of inconvenient use, difficult to degrade, low adsorption capacity, etc., and achieve high adsorption strength and easy amplification. , the effect of high adsorption capacity

Inactive Publication Date: 2017-06-06
由永峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Adsorption is an ideal method to treat heavy metal-contaminated wastewater, but the heavy metal adsorbents currently used or reported in the literature (such as activated carbon, resin, nanomaterial adsorbent, biomass adsorbent, agricultural waste cheap adsorbent, inorganic cheap adsorbent There are various disadvantages, such as high price, low adsorption capacity, inconvenient use, or difficult to degrade, etc.

Method used

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  • Keratin heavy metal adsorbent and preparation method thereof
  • Keratin heavy metal adsorbent and preparation method thereof
  • Keratin heavy metal adsorbent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A preparation method of a keratin heavy metal adsorbent, comprising the following steps:

[0026] 1. Clean the chicken feathers, dry them at 80°C, break them up, and set aside.

[0027] Two, (carry out oxidation reaction to prepared chicken feather) get 10g chicken feather, be placed in the aqueous solution of 500mL potassium hydrogen persulfate compound salt (0.2%, w / v). The solution contained 0.1% (v / v) of non-ionic surfactant Triton X-100. Shaking or agitation was applied during the reaction. The temperature is 25°C and the time is 30 minutes. After the reaction, the chicken feathers were washed briefly with water, and then squeezed to remove excess water.

[0028] Three, (reducing the oxidized chicken feathers) get the oxidized chicken feathers and put them in 500mL sodium sulfite (Na 2 SO 3 ) in an aqueous solution (1.0%, w / v, adjusted to pH 8.2 with dilute sulfuric acid in advance). Shaking or agitation was applied during the reaction. The temperature is 25...

Embodiment 2

[0031] A preparation method of a keratin heavy metal adsorbent, comprising the following steps:

[0032] 1. Clean the waste wool, dry it at 80°C, and smash it. spare.

[0033] Two, (oxidize the prepared wool) take 10g of wool and put it in 500mL aqueous solution of sodium persulfate complex salt (0.2%, w / v). The solution contained 0.1% (v / v) of non-ionic surfactant Triton X-100. Shaking or agitation was applied during the reaction. The temperature is 25°C and the time is 30 minutes. After the reaction, the wool is washed briefly with water and then squeezed to remove excess water.

[0034] Three, (reduce the oxidized wool) take the oxidized wool and put it in 500mL sodium sulfite (Na 2 SO 3 ) in aqueous solution (1.0%, w / v, adjusted to pH 8.2 with dilute sulfuric acid in advance). Shaking or agitation was applied during the reaction. The temperature is 25°C and the time is 30 minutes. After the reaction, the wool was washed briefly with water, then squeezed to remove ...

Embodiment 3

[0036] A preparation method of a keratin heavy metal adsorbent, comprising the following steps:

[0037] 1. Clean the chicken feathers, dry them at 80°C, and smash them into pieces. spare.

[0038] Two, (oxidation reaction is carried out to prepared chicken feather) get 10g chicken feather, be placed in the aqueous solution of 500mL sodium persulfate compound salt (0.2%, w / v). The solution contained 0.1% (v / v) of non-ionic surfactant Triton X-100. Shaking or agitation was applied during the reaction. The temperature is 25°C and the time is 30 minutes. After the reaction, the chicken feathers were washed briefly with water, and then squeezed to remove excess water.

[0039] Three, (reducing the oxidized chicken feathers) get the oxidized chicken feathers and put them in 500mL sodium metabisulfite (Na 2 S 2 o 5 ) in an aqueous solution (1.0%, w / v, adjusted to pH 8.2 with dilute sulfuric acid in advance). Shaking or agitation was applied during the reaction. The temperat...

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Abstract

The invention provides a preparation method of a keratin heavy metal adsorbent. The preparation method comprises the following steps: step I, cleaning and smashing a keratin raw material; step II, carrying out oxidation reaction on the ready keratin raw material: taking the keratin raw material, and putting the keratin raw material in an oxidant aqueous solution to carry out oxidation reaction, wherein an oxidant is a potassium monopersulfate composite salt or a sodium monopersulfate composite salt; and step III, carrying out reduction reaction on the oxidized keratin material: taking the oxidized keratin material, putting the oxidized keratin material in an aqueous solution containing a reducing agent to carry out reaction, and drying the obtained keratin material to obtain the keratin heavy metal adsorbent, wherein the reducing agent is one of sodium sulfite, sodium metasulfite, sodium bisulfite, potassium sulfite, potassium metasulfite and potassium bisulfate. The prepared heavy metal adsorbent has certain selectivity, is high in adsorption efficiency, low in cost, simple and convenient to operate, mild in required condition and does not generate secondary pollution.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a keratin heavy metal adsorbent and a preparation method thereof. Background technique [0002] The discharge of heavy metals (especially lead and cadmium) in industrial production seriously pollutes the environment and endangers human health. Adsorption is an ideal method to treat heavy metal-contaminated wastewater, but the heavy metal adsorbents currently used or reported in the literature (such as activated carbon, resin, nanomaterial adsorbent, biomass adsorbent, agricultural waste cheap adsorbent, inorganic cheap adsorbent There are various disadvantages, such as high price, low adsorption capacity, inconvenient use, or difficult to degrade. Therefore, there is an urgent need for new adsorbents in the market to treat heavy metal polluted wastewater. Contents of the invention [0003] For the above-mentioned deficiencies that exist in the prior art, the pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/24B01J2220/4856C02F1/286C02F2101/20
Inventor 由永峰
Owner 由永峰
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