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Study on the Adsorption Treatment of Chloroform in Water by Macroporous Adsorption Resin

Author: LiYunSong
Tutor: LiZhengShan
School: Sichuan University
Course: Environmental Engineering
Keywords: Chloroform in water Adsorption separation Macroporous resin
CLC: X703
Type: Master's thesis
Year: 2005
Downloads: 382
Quote: 2
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Abstract


Chloroform extraction performance has been widely used in the chemical industry, metallurgy , medicine , and other fields ; simultaneously chloroform toxic halogenated one of the most significant carcinogenic , harmful to the human body , the world of its extremely attention, especially the formation of chloroform in water and control is of great concern . There are many ways to remove the chloroform in the water so that the waste water to be processed , and chloroform in the process to be destroyed or recycled , the formation of new chlorine compounds, all of the destructive methods will cause new pollution , some of the current recovery method is not completely the recovery of the chloroform , the residue in chloroform concentration far from being able to reach the chloroform emissions standards , also resulted in a waste of resources . This paper inadequate for current chloroform processing method , according to the structural characteristics of the halogenated hydrocarbon , by chlorine ball and Friedel-Crafts post-crosslinking reaction , the synthesized the XDA series macroporous adsorption resin and the adsorption performance test and adsorption to the chloroform solution , after screening focus on experiments in static adsorption temperature, pH and salinity of static adsorption equilibrium : the initial concentration , flow rate , temperature , pH and salinity and other factors on the adsorption properties of dynamic adsorption studies ; in taken several different desorption in the desorption and desorption effect comparison: macroporous resin treatment chloroform economic analysis . The results show that : ( 1 ) XDA -1 macroporous adsorption resin of chloroform adsorption isotherm Freundlich model , the adsorption equation : Qe = 6.070C e 1/3.309 belongs preferential adsorption isotherm ; ( 2 ) temperature , pH, salinity adsorption of chloroform certain impact , a linear relationship between temperature and Freundlich parameters ; acidic and alkaline conditions are not conducive to the adsorbed ; adding appropriate inorganic salts can effectively increase the amount of resin adsorption of chloroform ; ( 3 ) XDA -1 macroporous resin adsorption treatment of chloroform in water effect is remarkable , dynamic adsorption capacity

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
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