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A kind of loaded iron ion activated carbon for adsorbing xanthate and its preparation method and adsorption method

A technology of iron ions and activated carbon, which is applied in chemical instruments and methods, adsorbed water/sewage treatment, and other chemical processes, etc., can solve problems such as the decrease in the adsorption of xanthate by activated carbon, the increase in xanthate toxicity, and the death of animals from respiratory failure. , to achieve the effect of improving resource utilization, small activity coefficient and strong binding force

Active Publication Date: 2020-04-24
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, xanthate has an inhibitory effect on the central nervous system, and when it accumulates to a certain amount in the organism, it will cause the animal to die of respiratory failure. # In the presence of oil, the toxicity of xanthate increases significantly due to a synergistic effect
[0004] At present, activated carbon adsorption is a commonly used method to treat flotation wastewater, but since non-ferrous metal beneficiation is mostly carried out under alkaline conditions, under alkaline conditions due to OH - Due to the competitive adsorption of ions, the adsorption amount of activated carbon to xanthate will be significantly reduced

Method used

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  • A kind of loaded iron ion activated carbon for adsorbing xanthate and its preparation method and adsorption method

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Embodiment 1

[0031] A kind of loaded iron ion activated carbon for adsorbing xanthate is prepared according to the following steps: take 1mol / L FeCl 3 Solution 500mL, 40g powdered activated carbon (Tianjin Beilian Fine Chemicals Development Co., Ltd.) was added to FeCl 3 solution, under the condition of rotating speed 500r / min, stirred and adsorbed for 4h to obtain the mixture; then, the mixture was filtered through a polypropylene filter cloth, and after filtering, activated carbon adsorbed with ferric ions was obtained; the activated carbon adsorbed with ferric ions was washed with clear water until The washing liquid is colorless, and the washing liquid is filtered with a polypropylene filter cloth, and the filtrate is dried at 80°C for 24 hours, and then dried in N 2 Calcined at 450°C for 1h in a protected environment to obtain it.

Embodiment 2

[0033] A kind of loaded iron ion activated carbon for adsorbing xanthate is prepared according to the following steps: take 2mol / L Fe 2 (SO 4 ) 3 Solution 500mL, 50g powdered activated carbon (Tianjin Beilian Fine Chemicals Development Co., Ltd.) was added to Fe 2 (SO 4 ) 3 solution, stirred and adsorbed for 8 hours at a rotating speed of 400r / min to obtain a mixture; then filtered the mixture with a polypropylene filter cloth to obtain activated carbon adsorbed with ferric ions; the activated carbon adsorbed with ferric ions was washed with clear water, washed Until the washing solution is colorless, filter the washing solution with polypropylene filter cloth, dry the filtrate at 100°C for 20 hours, and then dry it under N 2 Calcined at 400°C for 2h in a protected environment to obtain it.

Embodiment 3

[0035] A kind of loaded iron ion activated carbon for adsorbing xanthate is prepared according to the following steps: FeCl of 0.01mol / L 3 Solution 500mL, 30g powdered activated carbon (Tianjin Beilian Fine Chemicals Development Co., Ltd.) was added to FeCl 3 solution, under the condition of rotating speed 500r / min, stirred and adsorbed for 6h to obtain the mixture; then, the mixture was filtered with a polypropylene filter cloth, and after filtering, the activated carbon adsorbed with ferric ions was obtained; the activated carbon adsorbed with ferric ions was washed with clear water until The washing liquid is colorless, and the washing liquid is filtered with a polypropylene filter cloth, and the filtrate is dried at 80°C for 24 hours, and then dried in N 2 Calcined at 400°C for 3 hours in a protected environment to obtain it.

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Abstract

The invention discloses an activated carbon loaded with iron ions for absorbing xanthate. The activated carbon loaded with iron ions is activated carbon loaded with ferric ions, and comprises the following raw material components: a solution containing iron ions and activated carbon. The preparation method comprises the following steps: firstly, the solution containing iron ions is mixed with activated carbon, stirred and adsorbed to obtain the mixture; then the mixture is filtered to obtain activated carbon adsorbed with iron ions, and the activated carbon is washed and filtered in sequence, and the filtrate is sequentially Drying, calcination, that is. Also disclosed is an adsorption method for the loaded iron ion activated carbon used for adsorbing xanthate, which is carried out according to the following steps: the described loaded iron ion activated carbon used for adsorbing xanthate is placed in waste water containing xanthate, and allowed to stand for adsorption for 10-90min . The iron ion-loaded activated carbon used for adsorbing xanthate of the present invention has low solubility in water and is harmless to the environment. Under alkaline conditions, the adsorption rate of activated carbon to xanthate can be significantly improved, and the adsorption rate is increased by 27%.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an activated carbon loaded with iron ions for absorbing xanthate, a preparation method and an adsorption method thereof. Background technique [0002] With the development of our country's economy, there are fewer and fewer easy-to-select ores, and more and more development of poor fine miscellaneous ores. Refractory ores usually require more beneficiation chemicals. Direct discharge of mineral processing wastewater to the environment will pollute rivers, and the use of wastewater backwater will have a negative impact on production. [0003] The chemical name of xanthate is hydrocarbyl dithiocarbonate, commonly known as xanthate, composed of hydrocarbyl (R), solidophilic (OCSS - ) and alkali metal Me(Na + 、K + ) composition, divided into ethyl xanthate, butyl xanthate, amyl xanthate and so on. Xanthate is easily soluble in water, and is prone to hydrolysis and d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/30
CPCB01J20/0229B01J20/0281B01J20/0288B01J20/0296B01J20/20B01J2220/42B01J2220/4806C02F1/281C02F1/283C02F2101/40
Inventor 左可胜郑媛王浩郑英
Owner CHANGAN UNIV
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