Zhou Yanbo, Zhang Ruzhuang, Gu Xiaochen, Zhao Qing, Lu Jun
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, No. 130, Meilong Road, Shanghai 200237, China E-mail:
Water Sci Technol. 2015;71(2):296-302. doi: 10.2166/wst.2014.517.
In this paper, the sorption characteristics and mechanisms of phenanthrene and pyrene onto peat (PT) and surfactant-modified peat (MPT) were investigated. Sorption results fit closely to the Partition model and Freundlich model, the coefficient of determination (R²) were higher than 0.98 and 0.99, respectively. The contributions of partition and adsorption to the total sorption of phenanthrene and pyrene by PT and MPT were analyzed quantitatively. Results indicate that the sorption process is a combination of partition and adsorption, and partition plays a major role in the sorption process. The contribution of partition increased with the increasing of initial concentrations of polycyclic aromatic hydrocarbons. The sorption ability of phenanthrene and pyrene by PT and MPT followed the order of pyrene > phenanthrene. MPT has demonstrated potential as a promising new class of materials for environmental remediation of organic pollutants.
本文研究了菲和芘在泥炭（PT）及表面活性剂改性泥炭（MPT）上的吸附特性及机制。吸附结果与分配模型和弗伦德利希模型拟合良好，决定系数（R²）分别高于0.98和0.99。定量分析了PT和MPT对菲和芘总吸附中分配和吸附的贡献。结果表明，吸附过程是分配和吸附的结合，且分配在吸附过程中起主要作用。分配的贡献随多环芳烃初始浓度的增加而增加。PT和MPT对菲和芘的吸附能力顺序为芘＞菲。MPT已显示出作为一类有前景的新型材料用于有机污染物环境修复的潜力。
