期刊名称：International Research Journal of Environmental Sciences
电子版ISSN：2319-1414
出版年度：2015
卷号：4
期号：8
页码：60-73
语种：English
出版社：International Science Community Association
摘要：The potentiality of low cost abundantly available material with good adsorption properties for removing phenols is investigated. The adsorbent is characterized using a number of experimental approaches like chemical analysis, XRF, XRD, FTIR and SEM /EDS. Chlorophenols i.e. o-chlorophenol (OCL). m-chlorophenol (MCL) p-chlorophenol(PCL) including phenol (PHL) are selected for the studies. The effect of various factors like adsorbent particle size. pH, phenols concentration and temperature on the adsorption p are investigated. The removals of different phenols are increased with decreasing adsorbent particle size, pH and increasing concentration and temperature. The adsorption of the chlorophenols and phenols studied followed first-order rate kinetics. Langmuir adsorption isotherm constants are calculated and it is seen that the adsorption data for phenols onto flyash fitted the Langmuir model well. Thermodynamic studies are also undertaken and the values of the various parameters such as standard free energy (G°), enthalpy (H°) and entropy () are calculated.
