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Preparation method of adsorbent for removing antibiotics in water, prepared adsorbent and application thereof

An adsorbent and antibiotic technology, applied in the field of wastewater treatment, can solve problems such as difficult sustainable utilization, complicated preparation process, and increased production cost, and achieve the effect of low equipment requirements, simple process, and low cost

Inactive Publication Date: 2013-05-22
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can effectively treat antibiotic wastewater, it has the following deficiencies: (1) Using commercial activated carbon as raw material, nitrogen, deionized water and a reaction temperature as high as 850 ° C are required in the activation process of activated carbon, which undoubtedly increases production costs and Increase energy consumption; (2) Complex preparation process; (3) Difficult to recycle, high regeneration cost, difficult to sustainable use

Method used

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  • Preparation method of adsorbent for removing antibiotics in water, prepared adsorbent and application thereof
  • Preparation method of adsorbent for removing antibiotics in water, prepared adsorbent and application thereof
  • Preparation method of adsorbent for removing antibiotics in water, prepared adsorbent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Preparation of adsorbent for removing antibiotics in water

[0023] The first step is to dry, crush and siev the fiber raw material to obtain raw material powder;

[0024] Among them, the fiber raw materials are wood chips, peanut shells, peels, straw, straw, corn cobs, bagasse, bark, or leaves; the drying conditions are: drying temperature 55℃-65℃, drying to constant weight (preferably drying time 5-12 hours); the sieving condition is 20-100 mesh sieve.

[0025] In the second step, the treatment liquid is added to the raw material powder and reacted at room temperature for 1 to 5 hours to obtain a reactant; the treatment liquid is an alkali solution or an alcohol solution;

[0026] Among them, the alkali solution is a NaOH solution or KOH solution with a mass concentration of 2-20%; the alcohol solution is an ethanol solution with a mass concentration of 76-95%; the weight-volume ratio of the raw material powder to the treatment solution is 1:25-1:100 .

[0027] In t...

Embodiment 2

[0036] Example 2 The performance test of the adsorbent prepared in Example 1 for removing antibiotics in water

[0037] Prepare 100 mL of simulated wastewater containing oxytetracycline, tetracycline, and doxycycline. The initial concentration of the three antibiotics is 200 mg / L, and the pH of the solution is 7. 3g of adsorbent was put into each, and after 20 hours of shaking reaction in the dark at room temperature, the removal rate of antibiotics in wastewater was detected.

[0038] The results of removing antibiotics in each case of Example 1 are shown in the following table.

[0039] Table 4 Results of removing antibiotics in water

[0040]

[0041]

[0042] For comparison, the fiber raw materials-peanut shells and wood chips that have not been processed by the method in Example 1 are used to directly adsorb antibiotics, and the adsorption conditions are as described above. The results of the experiment were as follows: the removal rates of oxytetracycline, tetracycline, and dox...

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Abstract

The invention relates to a preparation method of an adsorbent for removing antibiotics in water, a prepared adsorbent and application thereof. The method comprises the steps of 1, drying, crushing and sieving a fiber material to obtain material powder; 2, adding conditioning fluid to the material powder to react for 1-5 hours at room temperature to obtain a reactant, wherein the conditioning fluid is aqueous alkali or alcoholic solution; and 3, washing and filtering the reactant, baking, crushing and sieving the solid to obtain an adsorbent product. The preparation method disclosed by the invention is low in cost, and simple in craft process, and has wide market prospect; industrialization can be carried out; the prepared adsorbent is stable in property, and good in absorption efficiency; and the adsorbent also can be used as fuel, a fermentation substrate adjuster, or a nutrient source of special microorganism after being used. Therefore, secondary pollution is avoided to a great extent, and regeneration does not need to be considered.

Description

Technical field [0001] The invention relates to a preparation method of an adsorbent for removing antibiotics in water, the prepared adsorbent and application thereof, and belongs to the technical field of wastewater treatment. Background technique [0002] In our country, environmental pollution caused by the abuse of antibiotics is becoming more and more serious. Various industries such as medical treatment, pharmaceuticals, livestock and poultry and aquaculture all produce wastewater containing antibiotics. Antibiotics have been detected in soil, surface water and groundwater. Antibiotic wastewater contains difficult-to-degrade substances and is biologically toxic. It is a complex organic wastewater that is difficult to degrade. These residual antibiotics not only cause adverse effects on the ecological environment, but may also harm human health through the food chain. [0003] At present, the treatment of antibiotic wastewater is mostly based on biodegradation technology, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F1/58
Inventor 张宇峰丁竹红刘希罗平陈进磊
Owner NANJING UNIV OF TECH