摘要
分别对丝瓜络进行碱化、酸解、高温高压改性,并将其应用于对水中痕量菲(Phe)、芘(Pyr)的吸附。结果表明,经高温高压改性的丝瓜络表面褶皱最多,比表面积最大,4种丝瓜络对Phe、Pyr的吸附量关系为高温高压改性丝瓜络>碱化丝瓜络>未改性丝瓜络>酸解丝瓜络;4种丝瓜络对Phe、Pyr的吸附过程均服从于准二级动力学,且吸附机制更符合单分子层吸附的Langmuir吸附模型。丝瓜络对多环芳烃的吸附能力的提高或者降低可能与甲基、三键、酰胺、芳香CC及纤维素等变化有关。
The loofah was subjected by alkalized,acid-decomposed,high-temperature and high-pressure modified,and applied to the adsorption of trace phenanthrene(Phe)and pyrene(Pyr)in water.The results showed that the high temperature and high pressure modified loofah had the largest surface wrinkles and the largest specific surface area.The adsorption relationship of four loofahs to Phe and Pyr was high temperature and high pressure modified loofah>alkalized loofah>unmodified loofah>acidolytic loofah.The adsorption processes of Pye and Pyr by four loofahs were all subject to quasi-secondary kinetics,and the adsorption mechanism is more consistent with the Langmuir adsorption model of monolayer adsorption.According to the infrared characterization,the increase or decrease of the adsorption capacity of loofah on polycyclic aromatic hydrocarbons might be related to changes in methyl,triple bond,amide,aromatic C=C and cellulose.
作者
王天杰
苏丹
李雪
普聿
王鑫
WANG Tian-jie;SU Dan;LI Xue;PU Yu;WANG Xin(School of Environmental Science,Liaoning University,Shenyang 110036,China;Key Laboratory of RegionalEnvironment and Eco-Remediation,Ministry of Education,Shenyang University,Shenyang 110044,China)
出处
《应用化工》
CAS
CSCD
北大核心
2020年第5期1082-1087,共6页
Applied Chemical Industry
基金
国家自然科学基金项目(41501346)
辽宁省自然科学基金项目(20180550587,20180550756)。
关键词
丝瓜络
改性
菲
芘
吸附
loofah
modified
phenanthrene
pyrene
adsorption
