Jing Li1, Qingxiang Zhou1, Yongli Liu1, Man Lei1. 1. Beijing Key Laboratory of Oil and Gas Pollution Control, China University of Petroleum Beijing , Beijing , P.R. China.
Abstract
In this study, nanoscale zero-valent iron nanoparticles (NZVIs) were coated with silica and polydopamine using a two-step process. The coated nanoparticles were applied as adsorbents for removal of two common polycyclic aromatic hydrocarbons pollutants, phenanthrene (PHE) and anthracene (ANT) from aqueous system. Adsorption kinetics followed a pseudo-second-order model. Isotherms and thermodynamics were investigated and the results indicated that the adsorption process fit best to the Freundlich model and exhibited the characteristics of an exothermal physical adsorption process. Owing to their superparamagnetic characteristics and stability, these adsorbents could be easily collected and recycled for reuse.
In this study, nanoscale zero-valent ironnanopn class="Chemical">articles (NZVIs) were coated with silica and polydopamine using a two-step process. The coated nanoparticles were applied as adsorbents for removal of two common polycyclic aromatic hydrocarbons pollutants, phenanthrene (PHE) and anthracene (ANT) from aqueous system. Adsorption kinetics followed a pseudo-second-order model. Isotherms and thermodynamics were investigated and the results indicated that the adsorption process fit best to the Freundlich model and exhibited the characteristics of an exothermal physical adsorption process. Owing to their superparamagnetic characteristics and stability, these adsorbents could be easily collected and recycled for reuse.
Entities:
Keywords:
Magnetic polydopamine nanoparticles; adsorption; anthracene; magnetic separation; phenanthrene
Authors: Thuan Van Tran; Duyen Thi Cam Nguyen; Hong-Tham T Nguyen; Sonil Nanda; Dai-Viet N Vo; Sy Trung Do; Tuyen Van Nguyen; Tuyet Anh Dang Thi; Long Giang Bach; Trinh Duy Nguyen Journal: Environ Sci Pollut Res Int Date: 2019-07-30 Impact factor: 4.223