Phosphorus removal from aqueous solution in parent and aluminum-modified eggshells: thermodynamics and kinetics, adsorption mechanism, and diffusion process

doi:10.1007/s11356-017-9072-8

	Phosphorus removal from aqueous solution in parent and aluminum-modified eggshells: thermodynamics and kinetics, adsorption mechanism, and diffusion process
	Guo, Ziyan 1,2; Li, Jiuhai 1,2; Guo, Zhaobing 1,2; Guo, Qingjun 3; Zhu, Bin 4
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2017-06-01
卷号	24 期号:16 页码:14525-14536
关键词	Phosphorous Eggshell Thermodynamics Kinetics Adsorption
ISSN号	0944-1344
DOI	10.1007/s11356-017-9072-8
通讯作者	Guo, Zhaobing(guozbnuist@163.com) ; Guo, Qingjun(guoqj@igsnrr.ac.cn)
英文摘要	Parent and aluminum-modified eggshells were prepared and characterized with X-ray diffraction, specific surface area measurements, infrared spectroscopy, zeta potential, and scanning electron microscope, respectively. Besides, phosphorus adsorptions in these two eggshells at different temperatures and solution pH were carried out to study adsorption thermodynamics and kinetics as well as the mechanisms of phosphorus adsorption and diffusion. The results indicated that high temperature was favorable for phosphorus adsorption in parent and aluminum-modified eggshells. Alkaline solution prompted phosphorus adsorption in parent eggshell, while the maximum adsorption amount was achievable at pH 4 in aluminum-modified eggshell. Adsorption isotherms of phosphorus in these eggshells could be well described by Langmuir and Freundlich models. Phosphorus adsorption amounts in aluminum-modified eggshell were markedly higher compared to those in parent eggshell. Adsorption heat indicated that phosphorus adsorption in parent eggshell was a typically physical adsorption process, while chemical adsorption mechanism of ion exchange between phosphorus and hydroxyl groups on the surface of eggshells was dominated in aluminum-modified eggshell. The time-resolved uptake curves showed phosphorus adsorption in aluminum-modified eggshell was significantly faster than that in parent eggshell. Moreover, there existed two clear steps in time-resolved uptake curves of phosphorus in parent eggshell. Based on pseudo-second order kinetic model and intraparticle diffusion model, we inferred more than one process affected phosphorus adsorption. The first process was the diffusion of phosphorus through water to external surface and the opening of pore channel in the eggshells, and the second process was mainly related to intraparticle diffusion.
资助项目	National Natural Science Foundation of China[41373023] ; National Natural Science Foundation of China[91544229] ; Jiangsu Province B333 Talent'' Cultivating Project ; Jiangsu Student Innovation Training Program[201610300038] ; Priority Academic Program Development of Jiangsu Higher Education Institutions
WOS关键词	DEGRADATION MECHANISMS ; NATURAL ADSORBENTS ; PHOSPHATE REMOVAL ; WASTE EGGSHELL ; HZSM-5 ZEOLITE ; WATER ; IRON ; NANOCOMPOSITE ; BIOMATERIAL ; EFFICIENT
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000402748300057
资助机构	National Natural Science Foundation of China ; Jiangsu Province B333 Talent'' Cultivating Project ; Jiangsu Student Innovation Training Program ; Priority Academic Program Development of Jiangsu Higher Education Institutions
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/63421]
专题	中国科学院地理科学与资源研究所
通讯作者	Guo, Zhaobing; Guo, Qingjun
作者单位	1.Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Nanjing 210044, Jiangsu, Peoples R China 2.Collaborat Innovat Ctr Atmospher Environm & Equip, Nanjing 210044, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Environm Remediat, Beijing 100101, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Guo, Ziyan,Li, Jiuhai,Guo, Zhaobing,et al. Phosphorus removal from aqueous solution in parent and aluminum-modified eggshells: thermodynamics and kinetics, adsorption mechanism, and diffusion process[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2017,24(16):14525-14536.
APA	Guo, Ziyan,Li, Jiuhai,Guo, Zhaobing,Guo, Qingjun,&Zhu, Bin.(2017).Phosphorus removal from aqueous solution in parent and aluminum-modified eggshells: thermodynamics and kinetics, adsorption mechanism, and diffusion process.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,24(16),14525-14536.
MLA	Guo, Ziyan,et al."Phosphorus removal from aqueous solution in parent and aluminum-modified eggshells: thermodynamics and kinetics, adsorption mechanism, and diffusion process".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 24.16(2017):14525-14536.