An innovative zinc oxide-coated zeolite adsorbent for removal of humic acid

被引：66

作者：

Wang, Lingling ^{[1
,2
]}

Han, Changseok ^{[3
]}

Nadagouda, Mallikarjuna N. ^{[4
]}

Dionysiou, Dionysios D. ^{[2
,5
]}

机构：

[1] Quanzhou Normal Univ, Coll Chem Engn & Mat, Quanzhou 362000, Fujian, Peoples R China

[2] Univ Cincinnati, Engn Res Ctr 705, Environm Engn & Sci Program, Cincinnati, OH 45221 USA

[3] US EPA, ORD, NRMRL, STD,CPB, 26 W Martin Luther King Jr Dr, Cincinnati, OH 45268 USA

[4] US EPA, ORD, NRMRL, WSWRD,WQMB, 26 W Martin Luther King Jr Dr, Cincinnati, OH 45268 USA

[5] Univ Cyprus, Sch Engn, Nireas Int Water Res Ctr, POB 20537, CY-1678 Nicosia, Cyprus

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2016年 / 313卷

关键词：

Electrostatic interaction; Humic acid; Water treatment; Zeolite; Zinc oxide; Natural organic matter; NATURAL ORGANIC-MATTER; AQUEOUS-SOLUTION; ACTIVATED CARBON; ADSORPTION; WATER; IONS; CHARGE; MONTMORILLONITE; ULTRAFILTRATION; EQUILIBRIUM;

D O I：

10.1016/j.jhazmat.2016.03.070

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Zinc oxide (ZnO)-coated zeolite adsorbents were developed by both nitric acid modification and Zn(NO3)(2)center dot 6H(2)O functionalization of zeolite 4A. The developed adsorbents were used for the removal of humic acid (HA) from aqueous solutions. The synthesized materials were characterized by porosimetry analysis, scanning electron microscopy, X-Ray diffraction analysis, and high resolution transmission electron microscopy. The maximum adsorption capacity of the adsorbents at 21 +/- 1 degrees C was about 60 mgCg(-1). The results showed that the positive charge density of ZnO-coated zeolite adsorbents was proportional to the amount of ZnO coated on zeolite and thus, ZnO-coated zeolite adsorbents exhibited a greater affinity for negatively charged ions. Furthermore, the adsorption capacity of ZnO-coated zeolite adsorbents increased markedly after acid modification. Adsorption experiments demonstrated ZnO-coated zeolite adsorbents possessed high adsorption capacity to remove HA from aqueous solutions mainly due

引用

页码：283 / 290

页数：8

共 34 条

[1] Biosorption of reactive dyes by dried activated sludge: equilibrium and kinetic modelling
Aksu, Z
[J]. BIOCHEMICAL ENGINEERING JOURNAL, 2001, 7 (01) : 79 - 84
[2] [Anonymous], 1982, HUMUS CHEM
[3] Mechanisms of pore water organic matter adsorption to montmorillonite
Arnarson, TS
Keil, RG
[J]. MARINE CHEMISTRY, 2000, 71 (3-4) : 309 - 320
[4] Ion exchange for the removal of natural organic matter
Bolto, B
Dixon, D
Eldridge, R
[J]. REACTIVE & FUNCTIONAL POLYMERS, 2004, 60 : 171 - 182
[5] Disinfection by-product formation of natural organic matter surrogates and treatment by coagulation, MIEX® and nanofiltration
Bond, T.
Goslan, E. H.
Parsons, S. A.
Jefferson, B.
[J]. WATER RESEARCH, 2010, 44 (05) : 1645 - 1653
[6] HYDROGENATION OF ETHYLENE BY ZINC OXIDE .I. ROLE OF SLOW HYDROGEN CHEMISORPTION
DENT, AL
KOKES, RJ
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1969, 73 (11) : 3772 - &
[7] THE INFRARED SPECTRUM OF HYDROGEN CHEMISORBED ON ZINC OXIDE
EISCHENS, RP
PLISKIN, WA
LOW, MJD
[J]. JOURNAL OF CATALYSIS, 1962, 1 (02) : 180 - 191
[8] PHYSICAL ADSORPTION ON SINGLE-CRYSTAL ZINC-OXIDE
ESSER, P
GOPEL, W
[J]. SURFACE SCIENCE, 1980, 97 (2-3) : 309 - 318
[9] Adsorption of humic substances on activated carbon from aqueous solutions and their effect on the removal of Cr(III) ions
Ferro-Garcia, MA
Rivera-Utrilla, J
Bautista-Toledo, I
Moreno-Castilla, C
[J]. LANGMUIR, 1998, 14 (07) : 1880 - 1886
[10] Humic acid adsorption onto Mg/Fe layered double hydroxide
Gasser, M. S.
Mohsen, H. T.
Aly, H. F.
[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2008, 331 (03) : 195 - 201

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