Insight into highly efficient co-removal of p-nitrophenol and lead by nitrogen-functionalized magnetic ordered mesoporous carbon: Performance and modelling.
Highly efficient simultaneous removal of Pb(II) and p-nitrophenol (PNP) contamination from water was accomplished by nitrogen-functionalized magnetic ordered mesoporous carbon (N-Fe/OMC). The mutual effects and inner mechanisms of their adsorption onto N-Fe/OMC were systematically investigated by sole and binary systems, and thermodynamic, sorption isotherm and adsorption kinetics models. The liquid-film diffusion step might be the rate-limiting step for PNP and Pb(II). The fitting of experimental data with Temkin model indicates that the adsorption process of PNP and Pb(II) involve physisorption and chemisorption. There exist site competition and enhancement of PNP and Pb(II) on the sorption to N-Fe/OMC. Moreover, N-Fe/OMC could be regenerated effectively and recycled by using dilute NaOH and acetone. These demonstrated superior properties of N-Fe/OMC indicate that it could be applied to treatment of wastewaters containing both lead and PNP.
College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
Yaoyu
Y
Zhou
College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
Xiaocheng
X
Liu
College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China. Electronic address: tanglin@hnu.edu.cn.
Lin
L
Tang
College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
Fengfeng
F
Zhang
College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China.
Guangming
G
Zeng
College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
Xiangqi
X
Peng
College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
Lin
L
Luo
College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China.
Yaochen
Y
Deng
Department of Biotechnology and Environmental Science, Changsha College, Changsha 410003, China.
Ya
Y
Pang
College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
Jiachao
J
Zhang
Lead; Modelling; Ordered mesoporous carbon; Sorption; p-nitrophenol