Factors influencing the dechlorination of 2,4-dichlorophenol by Ni-Fe nanoparticles in the presence of humic acid.
作者： Zhen Zhang , Naman Cissoko , Jingjing Wo , Xinhua Xu
DOI: 10.1016/J.JHAZMAT.2008.09.080
关键词:
摘要: The dechlorination of 2,4-dichlorophenol (2,4-DCP) by Ni-Fe nanoparticles in the presence humic acid (HA) was investigated to understand feasibility using for situ remediation contaminated groundwater. 2,4-DCP first adsorbed nanoparticles, then quickly reduced o-chlorophenol (o-CP), p-chlorophenol (p-CP), and finally phenol (P). However, introduction HA decreased removal percentage 2,4-DCP, as a result, production rates dropped from 86% (in absence HA) 29% within 2h. Our data suggested that rate dependent on number factors including availability, Ni loading over Fe, temperature, pH, concentration. In particular, determined be 100, 99, 95, 84 69%, concentrations 0, 5, 10, 30 40 mg L(-1), respectively. kinetic calculations indicated k values 0.14, 0.051, 0.039, 0.021 0.011 min(-1) with increasing L(-1).
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