[1]刘焱,王世和,吴玲琳,等.工业废渣基复合除磷材料的吸附动力学及热力学分析[J].东南大学学报(自然科学版),2009,39(6):1231-1235.[doi:10.3969/j.issn.1001-0505.2009.06.028]
　Liu Yan,Wang Shihe,Wu Linglin,et al.Adsorption kinetics and thermodynamics of efficient phosphorus removal composite[J].Journal of Southeast University (Natural Science Edition),2009,39(6):1231-1235.[doi:10.3969/j.issn.1001-0505.2009.06.028]
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工业废渣基复合除磷材料的吸附动力学及热力学分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第6期
页码:
1231-1235
栏目:
环境科学与工程
出版日期:
2009-11-20

文章信息/Info

Title:
Adsorption kinetics and thermodynamics of efficient phosphorus removal composite
作者:
刘焱;  王世和;  吴玲琳;  张怡;  黄敏
东南大学土木工程学院, 南京 210096
Author(s):
Liu Yan;  Wang Shihe;  Wu Linglin;  Zhang Yi;  Huang Min
School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
除磷;  吸附;  动力学;  热力学;  高效复合除磷材料
Keywords:
phosphorus removal;  adsorption;  kinetics;  thermodynamics;  efficient phosphorus removal composite
分类号:
X703.1
DOI:
10.3969/j.issn.1001-0505.2009.06.028
摘要:
以自行开发的高效复合除磷材料(EPRC)为对象,对在不同初始磷浓度、不同温度下的吸附除磷动力学过程进行了分析.结果表明,一级和准二级动力学模型均可较好地反映不同初始浓度下的等温吸附动力学,一级的相关系数略大于二级,可更准确地描述吸附过程.热力学分析表明,在不同温度下,EPRC对磷的吸附焓变均为正值,为吸热过程,且其最小值大于40 kJ/mol; 平均吸附能E的能量范围为8～16 kJ/mol,表明该吸附属化学吸附.EPRC在高温下容易吸附磷,反应的ΔG0为负值,该过程是自发进行的,其表观活化能小于100 kJ/mol.
Abstract:
Adsorption kinetic process of phosphorus adsorption by efficient phosphorus removal composite(EPRC)which was developed by ourselves was investigated under different initial phosphorus concentration and different temperature. Results show that both the pseudo-first and second-order kinetic models can well describe the isothermal adsorption process under different initial phosphorus concentration, and the correlation coefficients of the pseudo-first equations is better, so it can describe the adsorption process more accurately. The enthalpy change of the phosphorus adsorption by EPRC is positive, so the process is endothermic and the minimal value is more than 40 kJ/mol. The range of average adsorption energy E is between 8-16 kJ/mol and it indicates that the adsorption process belongs to chemical adsorption. EPRC can adsorb phosphorus well under high temperature, and the value of ΔG0 is negative, so the process is spontaneous and the apparent activation energy is less than 100 kJ/mol.

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备注/Memo

备注/Memo:
作者简介: 刘焱(1963—),男,博士,副教授; 王世和(联系人),男,教授,博士生导师,wshhj@seu.edu.cn.
基金项目: 江苏省科技厅太湖水污染治理科技专项资助项目(BS2007146).
引文格式: 刘焱,王世和,吴玲琳,等.工业废渣基复合除磷材料的吸附动力学及热力学分析[J].东南大学学报:自然科学版,2009,39(6):1231-1235. [doi:10.3969/j.issn.1001-0505.2009.06.028]
更新日期/Last Update: 2009-11-20