Effect and mechanism of modification treatment on ammonium and phosphate removal by ferric-modified zeolite

被引:15
作者
Gao, Lin [1 ]
Zhang, Chenyi [1 ]
Sun, Yi [1 ]
Ma, Chuanming [1 ]
机构
[1] China Univ Geosci, Sch Environm Studies, Wuhan 430074, Hubei, Peoples R China
关键词
Ferric-modified zeolite; ammonium; phosphate; modification treatment; FLY-ASH; AQUEOUS-SOLUTIONS; DRINKING-WATER; IRON; ADSORPTION; CLINOPTILOLITE; SORPTION; ADSORBENT; MANGANESE; LEAD;
D O I
10.1080/09593330.2018.1435729
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, the reason for the decline of ammonium sorption capacity by zeolite after ferric modification and the effect of modification treatment on ammonium and phosphate removal by ferric-modified zeolite were studied. Modification treatment media (Na salt and HCl) and Na concentration (0.1 and 0.9 mol/L) have been investigated. Zeolites have been characterized by SEM, XRD, BET and XRF; meanwhile, CEC and pHpzc have been also determined. Equilibrium batch sorption for ammonium and phosphate individually and kinetics batch sorption for ammonium were conducted. The results showed a decline in sorption capacity or diffusion coefficients for ammonium but an increase for phosphate after ferric modification. The decrease of surface negative charge was the main contributor for the former, but iron loading did not well account for the latter. The performance of 0.1 mol/L Na modification treatment was better than other treatments for ammonium sorption and equal to HCl modification treatment for phosphate sorption, and the enhancement extent increased for ammonium but declined for phosphate when Na concentration increased. The advantage of Na modification treatment for ammonium was due to the enhancement of textural properties and high exchange rate with ammonium. [GRAPHICS] .
引用
收藏
页码:1959 / 1968
页数:10
相关论文
共 39 条
  • [1] The investigation into the ammonium removal performance of Yemeni natural zeolite: Modification, ion exchange mechanism, and thermodynamics
    Alshameri, Aref
    Ibrahim, Abdullateef
    Assabri, Amer M.
    Lei, Xinrong
    Wang, Hongquan
    Yan, Chunjie
    [J]. POWDER TECHNOLOGY, 2014, 258 : 20 - 31
  • [2] [Anonymous], 2001, IRON OXIDES LAB PREP, P74
  • [3] Armbruster T., 2001, Zeolites and mesoporous materials at the dawn o f the 21st century. Studies in Surface Science and Catalysis, V135, P13, DOI [DOI 10.1016/S0167-2991(01)81183-6, 10.1016/S0167-2991(01)81183-6, 10.1016/s0167-2991, DOI 10.1016/S0167-2991]
  • [4] Removal of arsenic from drinking water using modified natural zeolite
    Baskan, Meltem Bilici
    Pala, Aysegul
    [J]. DESALINATION, 2011, 281 : 396 - 403
  • [5] Colella C, 1996, MINER DEPOSITA, V31, P554, DOI 10.1007/s001260050062
  • [6] In situ and ex situ study of the enhanced modification with iron of clinoptilolite-rich zeolitic tuff for arsenic sorption from aqueous solutions
    Davila-Jimenez, M. M.
    Elizalde-Gonzalez, M. P.
    Mattusch, J.
    Morgenstern, P.
    Perez-Cruz, M. A.
    Reyes-Ortega, Y.
    Wennrich, R.
    Yee-Madeira, H.
    [J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2008, 322 (02) : 527 - 536
  • [7] A SIMPLE METHOD OF DETERMINING PORE AND SURFACE DIFFUSIVITIES IN ADSORPTION STUDIES
    DO, DD
    RICE, RG
    [J]. CHEMICAL ENGINEERING COMMUNICATIONS, 1991, 107 : 151 - 161
  • [8] Removal of Mn2+ ions from drinking water by using Clinoptilolite and a Clinoptilolite-Fe oxide system
    Doula, Maria K.
    [J]. WATER RESEARCH, 2006, 40 (17) : 3167 - 3176
  • [9] Simultaneous removal of Cu, Mn and Zn from drinking water with the use of clinoptilolite and its Fe-modified form
    Doula, Maria K.
    [J]. WATER RESEARCH, 2009, 43 (15) : 3659 - 3672
  • [10] Guan Q, PHOSPHATE REMOVAL MA