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Preparation method and application of cyclodextrin improved biomass coffee grounds

A technology of coffee grounds and cyclodextrin, applied in separation methods, chemical instruments and methods, water pollutants, etc., can solve the problems of limiting the application of activated sludge method, improving the toxicity of water pollutants, etc., and achieve excellent recycling ability, Achieve multiple recycling and improve the effect of combining efficiency

Active Publication Date: 2019-12-03
CHENGDU TECHCAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the rapid development of society, the types and quantities of water pollutants are increasing, which greatly increases the toxicity of water pollutants, thus limiting the application of activated sludge in wastewater treatment.

Method used

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  • Preparation method and application of cyclodextrin improved biomass coffee grounds

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Comparison scheme
Effect test

Embodiment 1

[0030] A kind of preparation method of cyclodextrin improved biomass coffee grounds of the present embodiment, comprises the following steps:

[0031] Step 1, coffee grounds pretreatment: wash and filter the coffee grounds first, then irradiate with ultraviolet light with a wavelength of 0.2mm under vacuum conditions for 10 minutes, and then place them in an activation solution for activation treatment. The activation treatment uses a mass fraction of Soak in 40-% rare earth lanthanum chloride solution for 10 minutes, and the soaking temperature is 70°C;

[0032] Step 2: Preparation of activated carbon from coffee grounds: Dry the pretreated coffee grounds in a drying oven at a drying temperature of 55°C and a drying time of 5 hours, then send them into a tube furnace with protective gas for carbonization treatment first Then, sinter at 400°C for 2h, carbonize first at 100°C for 25min, then raise the temperature to 3°C at a rate of 3°C / min, and keep it for 1h;

[0033] Step 3...

Embodiment 2

[0038] A kind of preparation method of cyclodextrin improved biomass coffee grounds of the present embodiment, comprises the following steps:

[0039] Step 1, coffee grounds pretreatment: wash and filter the coffee grounds first, then irradiate them with ultraviolet light with a wavelength of 0.5mm for 20 minutes under vacuum conditions, and then place them in an activation solution for activation treatment. The activation treatment uses mass fraction Soak in 50% rare earth lanthanum chloride solution for 20 minutes, and the soaking temperature is 80°C;

[0040] Step 2: Preparation of activated carbon from coffee grounds: Dry the pretreated coffee grounds in a drying oven at a temperature of 65°C and a drying time of 9 hours, then send them into a tube furnace with protective gas for carbonization treatment Then, sinter at 800°C for 10h, and carbonize first at 100°C for 35min, then raise the temperature to 350°C at a rate of 6°C / min, and keep it warm for 2h;

[0041]Step 3, m...

Embodiment 3

[0046] A kind of preparation method of cyclodextrin improved biomass coffee grounds of the present embodiment, comprises the following steps:

[0047] Step 1, coffee grounds pretreatment: wash and filter the coffee grounds first, then irradiate them with ultraviolet light with a wavelength of 0.35mm for 15 minutes under vacuum conditions, and then place them in an activation solution for activation treatment. The activation treatment uses mass fraction Soak in 45% rare earth lanthanum chloride solution for 15 minutes, and the soaking temperature is 75°C;

[0048] Step 2: Preparation of activated carbon from coffee grounds: Dry the pretreated coffee grounds in a drying oven at a drying temperature of 60°C and a drying time of 7 hours, then send them into a tube furnace with protective gas for carbonization treatment first Then, sinter at 600°C for 6h, carbonize first at 100°C for 30min, then raise the temperature to 350°C at a rate of 4.5°C / min, and keep it warm for 1.5h;

[0...

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Abstract

The invention relates to the technical field of water body antibiotic pollution treatment. The invention provides a preparation method and application of cyclodextrin improved biomass coffee grounds.The preparation method comprises the following steps: step 1, pretreating coffee grounds, wherein firstly cleaning and filtering coffee grounds, then placing the coffee grounds under a vacuum condition, irradiating the coffee grounds for 10-20 minutes with ultraviolet light at the wavelength of 0.2-0.5 mm, and then placing the coffee grounds in an activating solution for activating treatment; step2, preparation of coffee grounds activated carbon: drying the pretreated coffee grounds in a drying box for 5-9 h at a drying temperature of 55-65 DEG C, then putting the coffee grounds into a tubular furnace, introducing protective gas, carrying out carbonization, sintering at the temperature of 400-800 DEG C. According to the preparation method, the low-cost coffee grounds are combined with cyclodextrin with a cavity structure to prepare an improved activated carbon; it is shown by experiment results that the beta-cyclodextrin improved coffee grounds activated carbon is high in efficiency in treatment of antibiotics and possesses excellent regeneration capacity, and can be applied to practical antibiotic wastewater treatment.

Description

technical field [0001] The invention relates to the technical field of antibiotic pollution treatment of water bodies, in particular to a preparation method and application of cyclodextrin-improved biomass coffee grounds. Background technique [0002] At present, the increasingly serious antibiotic pollution of water body has caused great harm to human health, so the treatment of antibiotics in water has attracted more and more countries' attention and attention. So far, domestic and foreign research fields have developed many methods for treating antibiotic pollution in water bodies, mainly including biological methods, advanced oxidation technology, electrochemical methods, membrane filtration and adsorption methods. [0003] China is a big producer and user of antibiotics, and the abuse of antibiotics in our country is very serious. Domestic sewage, medical wastewater and agricultural runoff contain various antibacterial substances. Over time, antibiotics will enhance th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30B01J20/34C02F1/28C02F101/20C02F101/30
CPCB01J20/24B01J20/20B01J20/3475C02F1/283C02F1/286B01J2220/4887C02F2303/16C02F2101/30C02F2101/20
Inventor 肖秀婵倪家明任亚琦李强林周筝江庆杨涵
Owner CHENGDU TECHCAL UNIV
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