摘要
研究了溶液的pH值与初始质量浓度、竹炭用量、吸附时间以及温度等因素对As(Ⅲ)离子吸附效果的影响。研究结果表明,在pH为3.00和12.50的情况下,竹炭对As(Ⅲ)离子有较好的吸附效果;同时吸附率随初始质量浓度的增加而降低,吸附能在180 m in内达到吸附平衡;等温吸附服从Freund lich吸附等温方程式,酸性条件和碱性条件的最佳吸附温度分别为30℃和40℃。认为竹炭可作为理想的除砷吸附材料。
The adsorption behavior of bamboo charcoal for As （ Ⅲ ） ion in water solution was studied. Effects of some factors （ pH, quantity of absorbent, absorbing time, temperature, initial concentration） on the removing of As （ Ⅲ ） ion from water solution were investigated. The results showed that （1） bamboo charcoal solution performs excellent adsorption effects to the As （ Ⅲ ） when the pH value is 3.0 and 12. 5, so that it can keep the absorption for As（Ⅲ） ion in a good level; （2） the absorption rate decreases with the increasing of initial concentration of As（ Ⅲ ） and the absorption will be in balancing in 180 min. The isothermal adsorption behaviors of the bamboo charcoal for As （Ⅲ ） ion obey the Freundlich isothermal equation. The condition respectively. So ion. best adsorption temperature is 30℃ in acid condition and 40℃ in basic the bamboo charcoal is an ideal absorption material for the removing of As（ Ⅲ ）
出处
《广东微量元素科学》
CAS
2009年第6期31-36,共6页
Trace Elements Science
基金
福建省青年人才项目(2007F3076)
福建省教育厅A类项目资助(JA07173)
关键词
竹炭
吸附
As(Ⅲ)离子
bamboo charcoal
adsorption
As （Ⅲ ） ion
