摘要
负载铁氧化物石英砂对苯酚的吸附具有一定的效能。负载羟基氧化铁对苯酚的吸附吸附苯酚等温线用Langmuir方程比用Freundlich方程拟合得更好,相关系数R2为0.992。吸附总量随着苯酚含量的增加而增大,但是吸附率下降。同时研究了pH和腐殖酸、CO32-、Ca2+含量对苯酚吸附量的影响,结果表明,低pH有利于苯酚的吸附,苯酚吸附率随着腐殖酸、CO32-含量的增大而减小。Ca2+使苯酚吸附量产生不规则的影响,可能与羟基氧化铁表面的复杂配合反应有关。
Adsorption of phenol of the filtration sands coated by ferric hydroxide was investigated. Adsorption equilibrium curve of phenol by the coated iron oxides could meet the Langmuir equation with the R2 of 0.992,and that of the Freundlich equation with the R2 of 0.938. Total adsorption increased with increase of the phenol concentration,but the adsorption rate decreased. Effects of pH value,humic acid,CO3^2-and Ca^2＋ on the adsorption were also investigated. Low pH value was favorable for the adsorption. The adsorption decreased with the increase of humic acid and CO3^2-concentration. An irregular change of phenol adsorption could be found,which might relate to the complex coordination reactions.
出处
《水处理技术》
CAS
CSCD
北大核心
2010年第6期69-72,122,共5页
Technology of Water Treatment
基金
吉林省科技厅青年基金(20080175)
关键词
羟基氧化铁
吸附
苯酚
腐殖酸
ferric hydroxide
adsorption
phenol
humic acid
