摘要
利用天然矿物材料硅藻土对水中聚乙烯醇(Polyvinyl Alcohol,PVA)进行吸附去除研究,采用平衡吸附法研究硅藻土投加量、溶液初始pH值、共存离子对硅藻土吸附PVA的影响。结果表明:投加量10mg,pH值接近中性时,吸附效果较好。NaHCO_3、Na_2HPO_4、Na_2SO_4和NaNO_34种共存离子对硅藻土吸附PVA都起到抑制作用,随着共存离子质量浓度的增加,抑制作用增强。Langmuir方程和Koble-Corrigan方程2种经典的等温线模型对硅藻土吸附PVA的等温线模拟效果较好。
Natural mineral materials diatomite were used to adsorpt and remove polyvinyl alcohol of wastewater to study the effect of diatomite dosing amount, initial solution pH value, and coexisting ions on the absorption of PVA using the equilibrium adsorption method. The results show that when the dosing amount is 10 mg and the pH value is close to neutral, the adsorption effect is better. Four kinds of coexisting ions NaHCO3, Na2HPO4, Na2SO4 and NaNO3 had an inhibitory effect on the adsorption of PVA on diatomite. With the increase of the concentration of coexisting ions, the inhibition effect was enhanced. Two kinds of classic model of isothermal Langmuir equation and Koble-Corrigan equation had a better simulation effect of PVA adsorption on diatomite.
出处
《河南农业大学学报》
CAS
CSCD
北大核心
2016年第1期110-114,共5页
Journal of Henan Agricultural University
基金
河南省高等学校青年骨干教师资助计划项目(2013GGJS-088)
中国地质科学院中国地质调查评价项目(12120113088200)
关键词
硅藻土
吸附
聚乙烯醇
diatomite
adsorption
polyvinyl alcohol
