摘要
对柚子皮吸附去除水中Pb（Ⅱ）的模拟试验研究结果表明,pH、吸附时间、柚皮粉用量和Pb（Ⅱ）初始浓度、温度等因素对柚皮粉吸附水中Pb（Ⅱ）有显著影响。适宜的吸附条件为：pH 5.3~6.0,吸附时间1.5 h,柚皮粉用量8 g/L,Pb（Ⅱ）初始浓度50 mg/L,温度30℃。在该条件下,Pb（Ⅱ）的去除率可达到90%以上。柚皮粉对水中Pb（Ⅱ）的吸附符合动力学二级反应,等温吸附规律可用Freundlich、Langmuir和Temkin模式较好地描述。
Grapefruit husk was employed to be as adsorbent to remove lead ions in water in this simulation research.Adsorption kinetics and adsorption law were investigated.The results showed that the factors enumerated above have remarkably influence on adsorption of Pb（Ⅱ） ions onto grapefruit husk powder.The suitable conditions for the adsorption are as following： pH is 5.3~6.0;shaking time is 1.5 hours;grapefruit husk powder dosage is 8 g/L;initial concentration of Pb（Ⅱ） is 50 mg/L;temperature is 30℃.Under the suitable conditions,the removal rate of Pb（Ⅱ） can reach more than 90%.Adsorption kinetics of lead ions onto grapefruit husk obeyed pseudo-second-order equation.The isothermal adsorption can be described well by Freundlich,Langmuir and Temkin models.
出处
《广东农业科学》
CAS
CSCD
北大核心
2011年第16期134-136,共3页
Guangdong Agricultural Sciences
基金
广东省大学生创新性实验项目(1184510134)
关键词
柚子皮
Pb(Ⅱ)
吸附
grapefruit husk
lead ion
adsorption
