Magnetic powdered activated carbon adsorbent and preparation method and application thereof
A technology of powder activated carbon and adsorbent, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxide/hydroxide, etc., can solve the problem of insufficient adsorption capacity, achieve effective desorption regeneration, and facilitate separation , the effect of reducing the cost of use
Inactive Publication Date: 2017-03-08
ZHEJIANG UNIV
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Problems solved by technology
Due to the large number of hydroxyl and amino groups in the molecule, it has certain adsorption capacity for various anionic organic substances, but the adsorption capacity is far less than that of powdered activated carbon.
Method used
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Embodiment 1～3
[0034] Add 100mL of deionized water into a 250mL beaker, add 1.352g of hexahydrate and ferric chloride, stir until completely dissolved with an electromagnetic stirrer, slowly add 2g of chitosan, and continue stirring for 2 hours to make chitosan and Fe 3+ Fully react, then add a certain amount of powdered activated carbon and Fe according to the data in Table 1 3 o 4 , continue stirring for 2 hours. Use a magnet to separate the precipitate and supernatant, wash the precipitate 4 times with deionized water, dry it in an oven at 80°C, and grind it a little to obtain Examples 1-3, which are recorded as CS-Fe / Fe 3 o 4 / AC.
[0035] The preparation conditions of table 1 embodiment 1~7
[0036] Example The amount of activated carbon added (g) Join Fe 3 o 4 Amount (g)
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Abstract
The invention discloses a preparation method of a magnetic powdered activated carbon adsorbent. The preparation method includes (1), dissolving chitosan in a ferric chloride solution slowly, and adding powdered activated carbon and ferroferric oxide powder with stirring evenly; (2), conducting magnetic separation, washing with deionized water, drying and grinding to obtain the magnetic powdered activated carbon adsorbent. The invention further discloses the magnetic powdered activated carbon adsorbent obtained by the preparation method and an application method of the magnetic powdered activated carbon adsorbent. The preparation method has the advantages that the magnetic powdered activated carbon adsorbent can be prepared rapidly, simply, conveniently and economically through a chitosan-Fe coprecipitation method, is capable of adsorbing organic pollutants in water effectively, can be rapidly separated through a magnetic field and is capable of achieving desorption regeneration effectively.
Description
technical field [0001] The invention belongs to the technical field of adsorbent preparation, and in particular relates to a preparation method, product and application of a magnetic powder activated carbon adsorbent. Background technique [0002] In recent years, pollutants in wastewater have shown a trend of complexity, among which refractory organic pollutants represented by antibiotics have attracted people's attention. Most of these pollutants have complex structures and are difficult to biochemically degrade, so it is difficult to effectively remove them by conventional treatment methods such as activated sludge. When discharged into the environment, even at low concentration levels, these pollutants can have toxic effects on the ecology and promote the spread of resistance genes, thereby seriously threatening human health. According to reports, the current advanced oxidation method, membrane treatment method and adsorption method can effectively treat refractory orga...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/30C02F101/36
CPCB01J20/06B01J20/20B01J20/24B01J20/28009C02F1/28C02F1/281C02F1/283C02F1/286C02F2101/30C02F2101/36
Inventor 文岳中马建青刘维屏
Owner ZHEJIANG UNIV
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