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表面活性剂接枝生物质材料去除水中多环芳烃的研究

发表时间:2012-12-31  浏览量:1593  下载量:615
全部作者: 周彦波,张汝壮,鲁军
作者单位: 华东理工大学资源与环境工程学院;华东理工大学煤气化及能源化工教育部重点实验室
摘 要: 采用木屑(MX)、稻草(DC)、棕榈丝(ZLS)、玉米芯(YMX)和泥炭(NT)5种生物质材料吸附去除水中的多环芳烃(polycyclic aromatic hydrocarbons, PAHs),对比研究不同生物质材料以及不同表面活性剂改性对去除效果的影响,并利用元素分析、红外光谱等手段对改性生物质材料的吸附机理进行研究。结果表明:在5种天然生物质材料中,泥炭的吸附效果最好;季铵盐类表面活性剂可以有效提高生物质材料的吸附效果。在3种不同的改性剂中,具有长链基团的溴代十六烷基三甲基铵(CTAB)促进生物质去除PAHs的效果最好,制得的CTAB改性泥炭吸附效果最优。研究结果对指导生物质吸附剂的开发和应用具有重要意义。
关 键 词: 环境工程学;生物质材料;改性;多环芳烃;表面活性剂
Title: Removal of PAHs from aqueous solution by surfactant modified biosorbents
Author: ZHOU Yanbo, ZHANG Ruzhuang, LU Jun
Organization: School of Resource & Environmental Engineering, East China University of Science & Technology; Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science & Technology
Abstract: polycyclic aromatic hydrocarbons (PAHs) were removed from aqueous solution by adsorptions of five modified biomasses (sawdust, straw, palm, corncob and peat). Then the effects of the modifications and different surfactant modifiers on PAHs removal efficiency were compared. The adsorption mechanism of modified biomasses was investigated using FTIR and EA techniques. The results showed that peat exhibited the best adsorption capacity among five kinds of natural adsorbents. The adsorption efficiency had been improved by quaternary ammonium salt surfactants. And peat modified by CTAB is the best combination for the removal of PAHs in three modifiers. These experimental results have a direction for the development and application of the biomass adsorbent.
Key words: environmental engineering; biomass; modification; polycyclic aromatic hydrocarbons; surfactant
发表期数: 2012年12月第24期
引用格式: 周彦波,张汝壮,鲁军. 表面活性剂接枝生物质材料去除水中多环芳烃的研究[J]. 中国科技论文在线精品论文,2012,5(24):2308-2313.
 
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