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Carboxylated banyan aerial root fiber adsorbent and preparation method and application of carboxylated banyan aerial root fiber adsorbent

An aerial rooting and carboxylation technology, applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve the potential hazards of biological and chemical treatment methods, waste of waste plant fiber resources, and complicated preparation of adsorbents and other problems, to achieve the effect of small secondary pollution, safety guarantee, and easy operation

Inactive Publication Date: 2019-12-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention provides a carboxylated ficus aerial root fiber adsorbent and its preparation method and application, which can solve the potential hazards of biological and chemical treatment methods, complex preparation of traditional adsorbents, high cost and low safety, and waste plant fiber resources. Waste and other issues

Method used

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  • Carboxylated banyan aerial root fiber adsorbent and preparation method and application of carboxylated banyan aerial root fiber adsorbent
  • Carboxylated banyan aerial root fiber adsorbent and preparation method and application of carboxylated banyan aerial root fiber adsorbent
  • Carboxylated banyan aerial root fiber adsorbent and preparation method and application of carboxylated banyan aerial root fiber adsorbent

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Embodiment 1

[0046] A preparation method for carboxylated banyan aerial root fiber adsorbent, comprising the steps of:

[0047] (1) Cut the aerial roots of the banyan tree into small sections with a length of 1 cm, then soak them in deionized water, ultrasonically clean them for 30 minutes, rinse, drain, dry at 40°C for 15 hours, put them into a pulverizer and pulverize them, and sieve them Size is 20 orders) obtains the banyan tree fiber of pretreatment;

[0048] (2) Add the pretreated fiber described in step (1) into a citric acid solution with a concentration of 0.5mol / L, the mass volume ratio of the pretreated fiber to the citric acid solution is 1:10g / mL, and mix well , heating up for heat treatment, the heat treatment is heating in sections, first heating at 40°C for 15h, then heating at 90°C for 120min, filtering to collect the precipitate (suction filtration), washing with deionized water, and heating at 40°C The carboxylated banyan aerial root fiber adsorbent was obtained by dryi...

Embodiment 2

[0050] A preparation method for carboxylated banyan aerial root fiber adsorbent, comprising the steps of:

[0051] (1) Cut the aerial roots of the banyan tree into small sections with a length of 1 cm, then soak them in deionized water, ultrasonically clean them for 30 minutes, rinse, drain, dry at 60 ° C for 10 hours, put them into a pulverizer and pulverize them, and sieve them Size is 20 orders) obtains the banyan tree fiber of pretreatment;

[0052] (2) Add the pretreated fiber described in step (1) into a citric acid solution with a concentration of 1.5mol / L, the mass volume ratio of the pretreated fiber to the citric acid solution is 1:5g / mL, and mix well , heating up for heat treatment, the heat treatment is staged heating, first heating at 60°C for 10h, then heating at 120°C for 60min, filtering to collect the precipitate (suction filtration), washing with deionized water, and heating at 60°C The carboxylated banyan aerial root fiber adsorbent was obtained by drying a...

Embodiment 3

[0054] A preparation method for carboxylated banyan aerial root fiber adsorbent, comprising the steps of:

[0055] (1) Cut the aerial roots of the banyan tree into small sections with a length of 1 cm, then soak them in deionized water, ultrasonically clean them for 30 minutes, rinse, drain, dry at 50 ° C for 12 hours, put them into a pulverizer and pulverize them, and sieve them Size is 20 orders) obtains the banyan tree fiber of pretreatment;

[0056] (2) adding the pretreated fiber described in step (1) into a citric acid solution with a concentration of 1mol / L, the mass volume ratio of the pretreated fiber to the citric acid solution is 1:7g / mL, and mix well, Raise the temperature for heat treatment, the heat treatment is segmented heating, first heat at 50°C for 12h, then heat at 150°C for 90min, filter to collect the precipitate (suction filtration), wash with deionized water, and dry at 50°C 12h to obtain the carboxylated banyan aerial root fiber adsorbent.

[0057] I...

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Abstract

The invention discloses a carboxylated banyan aerial root fiber adsorbent and preparation method and application thereof. The preparation method of the carboxylated banyan aerial root fiber adsorbentcomprises the steps that a banyan aerial root is subjected to washing, drying, pulverizing, and sieving to obtain pretreated fibers; the pretreated fibers are added to a citric acid solution for mixing, heating, filtering, washing, and drying to obtain the carboxylated banyan aerial root fiber adsorbent. According to the preparation method, the adopted raw material of banyan tree roots is cheap, easy-to-obtain, and environment-friendly, high temperature conditions are not required during the preparation, safety is high, meanwhile the material is not carbonized, and the yield rate is also relatively high. When the adsorbent is used for adsorbing ciprofloxacin in water, the advantages of being environment-friendly, simple in operation, low in cost, high in adsorption efficiency and the likeare achieved. The adsorbent contains a large number of carboxyl surface functional groups, and can enhance the effective binding with ciprofloxacin molecules and generate strong electrostatic interaction, the emerging pollutant ciprofloxacin in a water body can be effectively adsorbed and removed, and the adsorbent is further suitable for removal of other pollutants in the water.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and in particular relates to a carboxylated banyan aerial root fiber adsorbent and a preparation method and application thereof. Background technique [0002] Antibiotics are widely used in medical health and livestock and poultry breeding to kill bacteria and prevent infection. At the same time, they are also emerging pollutants. Because they are difficult to degrade and easy to remain, they have also caused environmental problems that cannot be ignored. Ciprofloxacin (CIP), a third-generation fluoroquinolone antibiotic, is one of the most commonly used antibiotics in China due to its high stability and strong antibacterial activity, and is often detected in livestock excreta, soil and water. Because antibiotics have acute and chronic toxic effects on aquatic photosynthetic organisms, have destructive effects on native microbial populations, and induce and spread resistance genes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/36
CPCB01J20/22B01J20/24B01J2220/485C02F1/285C02F1/286C02F2101/36
Inventor 马邕文樊慧敏万金泉王艳闫志成谢全模
Owner SOUTH CHINA UNIV OF TECH
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