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Bagasse-based carbon catalyst, as well as preparation method and application thereof

A technology of carbon catalyst and bagasse, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems that bagasse is difficult to be fully utilized, the constituent materials are not single, and environmental pollution, etc., to achieve Environmental protection, no pollution, economic benefits, high production efficiency and low price

Inactive Publication Date: 2017-12-29
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Bagasse is derived from the by-products of sugarcane sugar production. It is a biomass raw material with a wide range of sources and low cost. For a long time, most of it has been directly incinerated, causing environmental pollution and waste of resources.
Bagasse is mainly composed of cellulose, hemicellulose and lignin, and the composition of different substances makes it difficult to fully utilize bagasse

Method used

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  • Bagasse-based carbon catalyst, as well as preparation method and application thereof
  • Bagasse-based carbon catalyst, as well as preparation method and application thereof
  • Bagasse-based carbon catalyst, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The preparation of bagasse-based carbon catalyst, concrete steps are as follows:

[0038] 1) Carbonization: use discarded bagasse as raw material, first soak it in clean water, wash it to remove dirt and dust, then wash it with distilled water, and then dry it at 383K to constant weight to make bagasse as a raw material for use. Take 10g of bagasse as a raw material, put it in a porcelain boat, put it into a tubular muffle furnace, raise the temperature to 450K at a heating rate of 5K / min, keep it for 1h, and then cool it down to room temperature naturally. mL / min, to obtain carbonized bagasse;

[0039] 2) Activation: Mix the carbonized bagasse obtained in step 2) with 80 mL of zinc chloride solution (mass fraction: 100 g / L), stir for 24 hours under 298K normal pressure, then suction filter, and dry at 298K for 48 hours , to obtain activated bagasse charcoal;

[0040] 3) Re-carbonization: Put the activated bagasse charcoal obtained in step 3) into a porcelain boat and...

Embodiment 2

[0052] The preparation of the bagasse-based carbon catalyst, the specific steps are the same as in Example 1, except that the mass fraction of zinc chloride in the activation process of step 2) is changed to 130mg / L, and the residence temperature in the re-carbonization process of step 4) is maintained at 973K.

[0053] In the present embodiment, the X-ray diffraction comparison diagram of the carbonized bagasse obtained in step 1) and the finished bagasse-based carbon catalyst obtained in step 3) are as follows figure 2 Shown: Comparing (a) and (b), it can be clearly seen that (b) has obvious peaks around 31-38° and 57°, which proves that ZnO and Zn appear on the catalyst, so the bagasse-based carbon catalyst is successfully prepared .

[0054] Measured according to the performance test method described in Example 1, when 0.20 g of the bagasse-based carbon catalyst prepared in this embodiment was treated with 80 mL of 90 mg / L amoxicillin solution at 308 K, the amoxicillin so...

Embodiment 3

[0056] The preparation of the bagasse-based carbon catalyst, the specific steps are the same as in Example 1, except that the carbonization temperature in the re-carbonization process of step 3) is changed to 673K, and the re-carbonization time is 0.75h.

[0057] According to the treatment performance test method described in Example 1, when 0.25 g of the bagasse-based carbon catalyst prepared in this embodiment was treated with 80 mL of 60 mg / L amoxicillin solution at 298 K, the amoxicillin solution was within 6 hours. Reaching a balance, the highest treatment capacity is 18.46mg / g and the highest treatment efficiency can reach 96%.

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Abstract

The invention provides a bagasse-based carbon catalyst, as well as a preparation method and application thereof. The catalyst is prepared by using bagasse as a raw material through a process of charring, activating and re-charring. The preparation method comprises the following steps: washing and drying bagasse, heating to a certain temperature in a charring environment, keeping the temperature for a period, naturally cooling, and keeping inert gas to flow in the whole process to obtain charred bagasse; mixing the charred bagasse with a zinc chloride solution, stirring and activating for a period of time at a certain temperature, and drying and storing the activated charred bagasse; heating the activated charred bagasse to a certain charring temperature in a charring environment at a certain heating speed, keeping the temperature for a period of time, stopping heating, naturally cooling, and keeping the inert gas to flow in the whole process to finally obtain a finished product bagasse-based carbon catalyst. The bagasse-based carbon catalyst has an extremely good effect for penicillin broad spectrum beta-lactams in a water body; and the preparation method is simple, raw materials are low in cost.

Description

technical field [0001] The invention belongs to the technical field of solid waste resource treatment, and relates to the resource utilization of bagasse, in particular to the preparation of a bagasse-based carbon catalyst and its use for catalyzing the degradation of penicillin broad-spectrum β-lactam antibiotics. Background technique [0002] Amoxicillin has a strong bactericidal effect, and its ability to penetrate cell membranes is also strong. Amoxicillin is commonly used in humans and animals and is currently one of the most widely used antibiotics. However, the excessive use of this antibiotic will cause serious antibiotic pollution, and the amoxicillin accumulated in the human body can easily cause damage to the central nervous system and cause serious diseases such as joints and kidneys. In recent years, the impact of medical organic drug pollutants on the water environment and drug abuse in animal husbandry has become more and more serious, and the mass concentrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J37/00B01J37/22C02F1/00C02F101/38
CPCB01J21/18B01J37/00B01J37/22C02F1/00C02F2101/40
Inventor 罗晓刚刘超袁俊朱星蓉雷小娟
Owner WUHAN INSTITUTE OF TECHNOLOGY
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