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Modified cotton straw adsorbent for removing pyrazinamide through adsorption

A technology of pyrazinamide and cotton stalks, which is applied in the field of adsorption treatment of antibiotic wastewater treatment, can solve the problems of low adsorption capacity, poor selectivity and lack of antibiotics, and achieve the effects of high adsorption capacity, strong adsorption selection and strong anti-interference ability

Inactive Publication Date: 2017-07-25
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. Therefore, for specific pyrazinamide antibiotics, new The research and preparation of adsorbent materials need to be further strengthened, especially the lack of adsorbents for adsorption and removal of pyrazinamide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) 500 grams of cotton stalks are placed in a pulverizer and pulverized, and sieved with sieves with apertures of 4 mm and 6 mm respectively to obtain cotton stalks with a particle diameter of 4 to 6 mm;

[0047] (2) 80 grams of cotton stalks obtained by step (1) are washed with 400mL of deionized water and soaked in 400mL of absolute ethanol for 1 hour, and the liquid is removed after filtration to obtain substance P. After substance P is washed with 400mL of deionized water To obtain substance P1, put substance P1 into 400mL of NaOH solution with a molar concentration of 3.1mol / 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 400mL deionized water. Substance Q was obtained after being placed in a drying oven at 50°C for 12 hours;

[0048] (3) Add 4.98 grams of urea sulfate and 2.33 grams of guanidine nitrate to 500 mL of deionized water under stirring conditions of 1000 r / min, ...

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PUM

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Abstract

The invention discloses a modified cotton straw adsorbent for removing pyrazinamide through adsorption. The modified cotton straw adsorbent is prepared through the following steps of selecting cotton straws of which the particle size is 4-6mm, washing the cotton straws with deionized water, absolute ethyl alcohol and an NaOH solution and drying to obtain a substance Q; modifying the substance Q with a mixed liquid prepared from urea sulfate, guanidine nitrate, rhodium nitrate, cobalt sodium nitrate and iridous chloride, thus obtaining a substance R; modifying the substance R with a mixed liquid prepared from ceric ammonium nitrate, pyridine sulfur trioxide, duroquinol, pyridine sulfur trioxide, duroquinol, 1,5-naphthalene disulfonic acid, 2-amino-3-bromobenzoic acid and N-ethyl acetamide, thus obtaining a substance S; and modifying the substance S with a mixed liquid prepared from cupric nitrate, cadmium nitrate, lithium chloride, magnesium chloride and stannous chloride, thus obtaining a substance, namely the modified cotton straw adsorbent for removing the pyrazinamide through adsorption.

Description

technical field [0001] The invention belongs to the technical field of adsorption treatment for antibiotic wastewater treatment, and in particular relates to a modified cotton stalk adsorbent used for adsorbing and removing pyrazinamide. 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. Antibiotics represented by pyrazinamide are broad...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/38
CPCB01J20/24C02F1/286C02F2101/38C02F2103/343
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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