摘要
选用农业秸秆中小麦秸秆为原料,研究其化学处理方法,以考察改性秸秆的吸附性能。利用NaOH、H_3PO_4分别对小麦秸秆进行处理,采用溶液吸附法研究秸秆对废水中Cu^(2+)的吸附作用,通过原子吸收法测定秸秆对废水中Cu^(2+)的吸附率,结合扫描电镜考察秸秆处理前后表面形貌的变化。结果表明,NaOH、H_3PO_4处理小麦秸秆后吸附效果均有一定提高,其中NaOH对秸秆吸附Cu^(2+)的效果影响明显,为开辟农作物秸秆资源化和含Cu^(2+)废水处理提供了一种新途径。
The chemical treatment method of wheat straw was studied to investigate the adsorption properties of treated straw.The wheat straw was treated with NaOH and H3PO4,and the adsorption effect of straw on Cu^2+in waste water was studied by solution adsorption method.The adsorption rate of Cu^2+in waste water by treated straw was measured by atomic absorption spectrometry,and the change of the surface structure of the treated straw was measured by scanning electron microscope.The results showed that the adsorption efficiency of wheat straw was improved after NaOH and H3PO4treatment.The effect of NaOH on the adsorption of Cu^2+by straw was significant,which provided a new way for the application of crop straw resources and Cu^2+waste water treatment.
作者
李雅丽
王淑荣
李卓衡
LI Yali;WANG Shurong;LI Zhuoheng(Shaanxi Province Engineering Research Center of Coal Conversion Alcohol,Weinan 714099,China;College of Chemistry and Material,Weinan Normal University,Weinan 714099,China)
出处
《化工科技》
CAS
2019年第1期14-17,共4页
Science & Technology in Chemical Industry
基金
国家自然科学基金项目(21503150)
渭南师范学院自然科学基金项目(17YKS02)
关键词
小麦秸秆
化学处理
铜离子
吸附
Wheat straw
Chemical treatment
Copper ion
Adsorption
