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Preparation method of cyclodextrin/photocatalyst composite modified carbon-based water purifying agent

A carbon-based water purifier and composite modification technology, which can be used in adsorption water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of short service life, single function, low specific surface area, etc., and achieve low cost , the use of a wide range of effects from a wide range of sources

Inactive Publication Date: 2018-11-06
ANHUI LEJIN ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the continuous improvement of people's demand and quality requirements for activated carbon, activated carbon also shows many shortcomings, such as the single effect of purifying sewage through physical adsorption, low specific surface area, and short service life, which can no longer meet the needs of modern social development. Become the focus of the industry

Method used

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preparation example Construction

[0014] The present invention also provides a preparation method of the cyclodextrin / photocatalyst composite modified carbon-based water purifier, comprising the following steps:

[0015] (1) orange peel is crushed, then annealed in an inert gas to obtain porous carbon powder;

[0016] (2) After reacting β-cyclodextrin and chloroacetic acid at 40-80°C for 1-3 hours, add N-methylformamide and initiator in ethanol and mix them evenly, then stir the reaction at 50-80°C 0.5 to 3 hours to obtain grafted modified β-cyclodextrin;

[0017] (3) Stir the organic titanate and the soluble metal salt in the solvent evenly to obtain a mixed sol, add porous carbon powder to the mixed sol and seal the reaction at 80-150° C. for 3-6 hours to obtain a modified porous carbon;

[0018] (4) Mix the modified β-cyclodextrin, modified porous carbon, and silane coupling agent in polyvinyl alcohol evenly, and react with microwave for 5-10 minutes to obtain cyclodextrin / photocatalyst composite modified ...

Embodiment 1

[0032] A cyclodextrin / photocatalyst composite modified carbon-based water purifier, made of the following parts by weight: 100 parts by weight of orange peel, 32 parts by weight of β-cyclodextrin, 5 parts by weight of chloroacetic acid, 45 parts by weight of polyvinyl alcohol Parts by weight, 8 parts by weight of N-methylformamide, 2 parts by weight of dimethyl azobisisobutyrate, 0.5 parts by weight of silver nitrate, 25 parts by weight of n-butyl titanate, 3 parts by weight of aminopropyltriethoxysilane parts by weight, 60 parts by weight of ethanol.

[0033] The preparation method of described cyclodextrin / photocatalyst composite modified carbon-based water purifier comprises the following steps:

[0034] (1) Grinding orange peel into 300-mesh powder, annealing at 400°C for 3 hours in an argon atmosphere to obtain porous carbon, grinding the porous carbon, and passing through a 120-mesh sieve to obtain porous carbon powder;

[0035] (2) After reacting β-cyclodextrin and chl...

Embodiment 2

[0039]A cyclodextrin / photocatalyst composite modified carbon-based water purifier, made of the following parts by weight: 120 parts by weight of orange peel, 24 parts by weight of β-cyclodextrin, 6 parts by weight of chloroacetic acid, 40 parts by weight of polyvinyl alcohol Parts by weight, 6 parts by weight of N-methylformamide, 3 parts by weight of dimethyl azobisisobutyrate, 0.2 parts by weight of silver nitrate, 15 parts by weight of n-butyl titanate, aminoethylaminopropyl triethoxy 2 parts by weight of silane, 50 parts by weight of ethanol.

[0040] The preparation method of described cyclodextrin / photocatalyst composite modified carbon-based water purifier comprises the following steps:

[0041] (1) Grinding the orange peel into a 300-mesh powder, annealing at 350° C. for 4 hours in an argon atmosphere to obtain porous carbon, grinding the porous carbon, and passing through a 120-mesh sieve to obtain porous carbon powder;

[0042] (2) After reacting β-cyclodextrin and ...

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Abstract

The invention relates to the technical field of water purifying agents, in particular to a preparation method of a cyclodextrin / photocatalyst composite modified carbon-based water purifying agent. Thepreparation method of the cyclodextrin / photocatalyst composite modified carbon-based water purifying agent comprises the following steps: annealing orange peel to obtain porous charcoal powder; sequentially performing a reaction on beta-cyclodextrin, chloroacetic acid and N-methylformamide to obtain graft-modified beta-cyclodextrin; performing a reaction on organic titanate, soluble metal salt and the porous charcoal powder in a sealed environment to obtain modified porous charcoal; compounding the modified beta-cyclodextrin, the modified porous charcoal and a silane coupling agent to obtainthe cyclodextrin / photocatalyst composite modified carbon-based water purifying agent. Through compounding of the porous charcoal, grafted amphoteric chitosan and modified titanium dioxide, the water purifying agent integrates the functions of adsorption, flocculation, catalytic degradation and the like, so that the effect of purifying a water body in multiple aspects is achieved.

Description

technical field [0001] The invention relates to the technical field of water purifiers, in particular to a preparation method of a cyclodextrin / photocatalyst composite modified carbon-based water purifier. Background technique [0002] Protecting precious water resources is an important issue, especially for my country, where the per capita fresh water resources only account for a quarter of the world's average level. Although many laws and regulations on the protection of water resources such as sewage discharge have been promulgated one after another, our country started relatively late in this regard. According to relevant research, more than 50% of groundwater resources in my country have been polluted, and the proportion of inferior fifth-class water is also low. up to 30%. Therefore, it is imperative to purify polluted water sources and adopt efficient sewage treatment materials and technologies. [0003] Traditional water purifiers mainly use chlorine and hypochlorou...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/52
CPCC02F1/28C02F1/52
Inventor 郭常青
Owner ANHUI LEJIN ENVIRONMENT TECH CO LTD
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