Adsorbent for removing PFOS and PFOA in water and preparation method thereof

An adsorbent and water removal technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problems of complex preparation process, narrow applicable pH range, low adsorption capacity, etc., and achieve good adsorption effect , low price, easy to degrade effect
CN102489260AActive Publication Date: 2012-06-13TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2012-06-13

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Abstract

The invention provides an adsorbent for removing PFOS and PFOA in water and a preparation method thereof. The adsorbent comprises cotton as a parent material, and quaternary ammonium salt is formed on the surface on the adsorbent. The use of the adsorbent can effectively remove PFOS and PFOA in water.
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Description

technical field

[0001] The invention belongs to the technical field of water treatment, in particular to an adsorbent for efficiently removing PFOA and PFOS and a preparation method thereof. Background technique

[0002] Perfluorinated compounds (PFCs) are a series of artificially synthesized compounds in which all hydrogens attached to carbon atoms are replaced by fluorine, usually containing a hydrophobic alkyl chain and a hydrophilic functional group. Since fluorine is the most electronegative element in the periodic table, after the hydrogen on the hydrocarbon chain is replaced by fluorine, the C-F bond energy is 485.3kJ / mol, which is much higher than the original C-H bond energy of 416.7kJ / mol. PFCs have very stable chemical properties and are difficult to be degraded by physicochemical methods and biodegradation, which leads to the persistent existence of PFCs in the environment and can be bioaccumulated, with the characteristics of persistence, bioaccumulation, pollut...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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