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Modified walnut shell adsorbent for adsorbing and removing mafenide

A technology of sulfamethoxazole and walnut shell, which is applied in the fields of adsorption water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc. High, strong adsorption selection, strong anti-interference ability

Inactive Publication Date: 2017-08-04
北京益净环保设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, commonly used adsorbents have disadvantages such as poor selectivity to specific antibiotics, low adsorption capacity, and susceptibility to environmental factors, which limit the application and development of adsorption technology in antibiotic wastewater treatment. The research and preparation of adsorbent materials need to be further strengthened, especially the lack of adsorbents for adsorbing and removing sulfametholone at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) 500 grams of walnut shells are placed in a pulverizer to pulverize, and sieved by sieves with apertures of 4 mm and 6 mm respectively to obtain walnut shells with a particle size of 4 to 6 mm;

[0033] (2) 80 grams of walnut shells obtained by step (1) are washed with 350 mL of deionized water and soaked in 350 mL of absolute ethanol for 1 hour, and the liquid is removed after filtration to obtain substance P. After substance P is washed with 350 mL of deionized water To obtain substance P1, put substance P1 into 350mL of NaOH solution with a molar concentration of 2.4mol / L and soak for 1 hour, remove the liquid after filtration to obtain substance P2, and obtain substance P3 after substance P2 is washed with 300mL deionized water. Substance Q was obtained after being placed in a drying oven at 45°C for 24 hours;

[0034] (3) Add 1.89 grams of p-chlorophenylacetonitrile and 16.46 grams of 4-methylsulfonylaniline to 150 mL of methanol, add 5.6 grams of sodium citrate...

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PUM

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Abstract

The invention discloses a modified walnut shell adsorbent for adsorbing and removing mafenide. The modified walnut shell adsorbent is prepared by selecting walnut shell of 4-6mm in grain size, using deionized water, anhydrous alcohol and NaOH solution to wash, drying to obtain a substance Q, modifying the substance Q by using mixed liquid prepared from p-chlorobenzyl cyanide, 4-methylsulfonylaniline, methanol and sodium citrate to obtain a substance S, modifying the substance S by using mixed liquid prepared from hydroxylamine hydrochloride, aluminum-sodium silicate, ammonium dimolybdate and sodium chlorite to obtain a substance U; modifying the substance U by using mixed liquid prepared from ammonium borofluoride, ammonium hexafluorophosphate, sodium aluminate and cerium oxide to obtain a substance which is the modified walnut shell adsorbent.

Description

technical field [0001] The invention belongs to the technical field of adsorption treatment of antibiotic wastewater treatment, and in particular relates to a modified walnut shell adsorbent used for adsorption and removal of sulfamepron. Background technique [0002] Antibiotic wastewater is a kind of high-concentration organic wastewater with deep color, high content of suspended solids, and high salt content. It has extremely complex components and has caused great harm to the environment. It has been listed by many foreign developed countries as a key environmental problem in the new era. The use of antibiotics will induce drug-resistant strains, and the continuous emergence of highly drug-resistant bacteria will seriously affect the ecosystem, cause toxicity to aquatic organisms, and threaten human health through food chain enrichment. Therefore, the management of antibiotics in the environment is particularly important. Sulfonamides, represented by sulfamepron, are br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/38
CPCB01J20/24C02F1/286C02F2101/40
Inventor 不公告发明人
Owner 北京益净环保设备科技有限公司
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