摘要
采用硝酸酸化法对麦壳进行改性,研究其改性后对孔雀绿的吸附性能。考察了吸附时间、吸附剂用量、初始浓度、溶液pH值、温度和盐度等吸附条件对吸附量的影响。实验结果表明:硝酸改性麦壳对孔雀绿有较好的吸附作用,吸附反应迅速,40min左右达到平衡;随吸附剂用量的增加,孔雀绿的吸附量逐渐减小;吸附量随初始浓度的增加而增加;溶液pH值、温度和盐度离子共存等条件对吸附量影响不大。
Wheat shell was modified with nitric acid and used as adsorbent to remove malachite green from aqueous solution. The effects of several factors, such as contact time, adsorbent dosage, initial malachite green concentration, pH, temperature and salinity, on adsorption quantity were studied. The results showed that nitric acid modified wheat shell was a good adsorbent of malachite green. The adsorption process was fast and it took about 40 minutes to reach equilibrium. With the increase of the amount of ad- sorbent, the adsorption quantity of malachite green decreased gradually. The adsorption quantity increased with the increase of the initial malachite green concentration. The influence of solution pH value, tempera- ture and salinity on the adsorption quantity was negligille.
出处
《化学世界》
CAS
CSCD
2016年第1期16-19,29,共5页
Chemical World
基金
河南省科技攻关项目(122102310476)
关键词
麦壳
吸附
孔雀绿
wheat shell
adsorption
malachite green
