Preparation Of Carboxymethyl Cellulose/β-cyclodextrin Hydrogel And Applications Of Industrial Wastewater Treatment

With the rapid development of industry, there are more emissions of pollutants in water and varieties have become more complex, and always exist in the form of mixed pollutants;there are many single or simple of treatment,so the treatment of industrial wastewater is important, especially the mixed wastewater. In this paper, crosslinked carboxymethyl-cellulose(CMC)/β-cyclodextrin(CD) hydrogel synthesized Successfully and with the properties of respective, because this hydrogel can adsorb the metal ions, cationic dyes, phenol and aniline and so on.there are an attractive prospect of dealing with such mixed industrial wastewater.In this paper, A new kind of carboxymethyl-cellulose/β-cyclodextrin(β-CD) hydrogel with epichlorohydrin as crosslinker was synthesized Successfully.The swelling behaviors of the hydrogel were researched and found that sensitive with pH. The adsorption and desorption behavior of the hydrogel for x-GRL and adsorption kinetics was investigated, and the max adsorbing capacity of the hydrogel for the x-GRL is260mg/g,pH and concentration of CMC in the hydrogel effect the adsorption.the desorption of hydrogel in Ca2+solution better than in Na+solution.Then the adsorption of Cu2+,Ni2+,Pb2+and adsorption kinetics were invertigated in detail. the max adsorbing capacity of the hydrogel for the Cu2+, Pb2+and Ni2+are2.18mmol/g,2.05mmol/g and1.93mmol/g,respectively.pH and concentration of CMC in the hydrogel effect the adsorption.Finally,the adsorption of phenol and aniline with adsorption kinetics were invertigated in detail, he max adsorbing capacity of the hydrogel for the phenol and aniline are13.5μmol/g and18.9μmol/g,respectively. The concentration ofβ-CD in the hydrogel effect the adsorption.