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Preparation method of activated carbon-based water purifying agent

A technology based on water purifying agent and activated carbon, applied in chemical instruments and methods, water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of short service life, low specific surface area, and single function, and achieve low cost, Effects from a wide range of sources and use

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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Examples

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preparation example Construction

[0014] The present invention also provides a preparation method of the activated carbon-based water purifying agent, comprising the following steps:

[0015] (1) Coconut shell is pulverized, then annealed in an inert gas to obtain porous carbon powder;

[0016] (2) After reacting chitosan and chloroacetic acid at 40-80°C for 1-3h, add methacrylamide and initiator in ethanol and mix evenly, then stir and react at 50-80°C for 0.5-3h, Obtain graft modified chitosan;

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

[0018] (4) After uniformly mixing the modified chitosan, the modified porous carbon and the silane coupling agent in the polyhydric alcohol, and reacting in microwave for 5-10 minutes, an activated carbon-based water purifier is obtained.

[0019] Coconut husk Coconut husk has a wide range of s...

Embodiment 1

[0033] An activated carbon-based water purifier, made of the following parts by weight: 100 parts by weight of coconut shell, 32 parts by weight of chitosan, 5 parts by weight of chloroacetic acid, 45 parts by weight of ethylene glycol, and 8 parts by weight of methacrylamide , 2 parts by weight of dimethyl azobisisobutyrate, 0.5 parts by weight of ethyl orthosilicate, 25 parts by weight of n-butyl titanate, 3 parts by weight of aminopropyltriethoxysilane, and 60 parts by weight of ethanol.

[0034] The preparation method of described active carbon-based water purifying agent, comprises the following steps:

[0035] (1) Coconut husk is crushed into 300 mesh powder, then annealed at 400°C for 3h in an argon atmosphere to obtain porous carbon, which is ground, then passed through a 120 mesh sieve to obtain porous carbon powder;

[0036] (2) After reacting chitosan and chloroacetic acid at 60°C for 2h, add methacrylamide and dimethyl azobisisobutyrate in ethanol and mix evenly, t...

Embodiment 2

[0040] An activated carbon-based water purifier, made of the following parts by weight: 120 parts by weight of coconut shell, 24 parts by weight of chitosan, 6 parts by weight of chloroacetic acid, 40 parts by weight of 1,3-propylene glycol, 6 parts by weight of methacrylamide Parts by weight, 3 parts by weight of dimethyl azobisisobutyrate, 0.2 parts by weight of methyl orthosilicate, 15 parts by weight of n-butyl titanate, 2 parts by weight of aminoethylaminopropyl triethoxysilane, ethanol 50 parts by weight.

[0041] The preparation method of described active carbon-based water purifying agent, comprises the following steps:

[0042](1) Coconut husk is pulverized into 300 mesh powder, then annealed at 350 DEG C in an argon atmosphere for 4 hours to obtain porous carbon, the porous carbon is ground, and then passed through a 120 mesh sieve to obtain porous carbon powder;

[0043] (2) After reacting chitosan and chloroacetic acid at 60°C for 1.5h, add methacrylamide and dime...

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Abstract

The invention relates to the technical field of water purifying agents, in particular to a preparation method of an activated carbon-based water purifying agent. The preparation method of the activated carbon-based water purifying agent comprises the following steps: annealing coconut peel to obtain porous charcoal powder; sequentially performing a reaction on chitosan, chloroacetic acid and methacrylamide to obtain graft-modified chitosan; performing a reaction on organic titanate, organic silicate and the porous charcoal powder in a sealed environment to obtain modified porous charcoal; compounding the modified charcoal, the modified porous charcoal and a silane coupling agent to obtain the activated carbon-based water purifying agent. Through compounding of the porous charcoal, graftedamphoteric 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 awater body in multiple aspects is achieved; in addition, the activated carbon-based water purifying agent is wide in raw material sources, low in cost and wide in application range, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of water purifiers, in particular to a preparation method of activated carbon-based water purifiers. 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 hypochlorous acid. Although the effect of steril...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/52C02F1/54C02F1/56C02F1/00
CPCC02F1/283C02F1/00C02F1/285C02F1/286C02F1/5236C02F1/5263C02F1/54C02F1/56
Inventor 郭常青吴学军
Owner ANHUI LEJIN ENVIRONMENT TECH CO LTD