BTX abatement using Chilean natural zeolite: the role of Bronsted acid sites

被引：22

作者：

Alejandro, S. ^{[1
,2
]}

Valdes, H. ^{[1
]}

Manero, M. -H. ^{[3
]}

Zaror, C. A. ^{[2
]}

机构：

[1] Univ Catolica Santisima Concepcion, Lab Tecnol Limpias, Fac Ingn, Concepcion, Chile

[2] Univ Concepcion, Dept Ingn Quim, Concepcion, Chile

[3] Univ Toulouse, LGC UMR 5503, IUT GCGP, F-31030 Toulouse 4, France

来源：

WATER SCIENCE AND TECHNOLOGY | 2012年 / 66卷 / 08期

关键词：

Benzene; bronsted acid sites; Lewis acid sites; natural zeolite; toluene; xylene; ADSORPTION; BENZENE; TOLUENE; PHENOL; OZONE; VOC;

D O I：

10.2166/wst.2012.390

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In wastewater treatment facilities, air quality is not only affected by conventional unpleasant odour compounds; toxic volatile organic compounds (VOCs) are also found. In this study, the adsorptive capacity of Chilean natural zeolite toward VOC removal was evaluated. Moreover, the influence of zeolite chemical surface properties on VOC elimination was also investigated. Three modified zeolite samples were prepared from a natural Chilean zeolite (53% clinoptilolite, 40% mordenite and 7% quartz). Natural and modified zeolite samples were characterised by nitrogen adsorption at 77 K, elemental analyses and X-ray fluorescence (XRF). Chemical modifications of natural zeolite showed the important role of Bronsted acid sites on the abatement of VOCs. The presence of humidity has a negative effect on zeolite adsorption capacity. Natural zeolites could be an interesting option for benzene, toluene and xylene vapour emission abatement.

引用

页码：1759 / 1765

页数：7

共 19 条

[1]

Alejandro S, 2011, J ADV OXID TECHNOL, V14, P182

[2] Adsorption of sulfur dioxide on chemically modified natural clinoptilolite. Acid modification [J].

Allen, Stephen J. ;

Ivanova, Emilia ;

Koumanova, Bogdana .

CHEMICAL ENGINEERING JOURNAL, 2009, 152 (2-3) :389-395

[3] MOLECULAR SIEVE SORBENTS FROM CLINOPTILOLITE [J].

BARRER, RM ;

MAKKI, MB .

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1964, 42 (06) :1481-&

[4] ADSORPTION OF AROMATICS IN NAY AND AIPO4-5 - CORRELATION WITH THE SORBENT PROPERTIES IN SEPARATIONS [J].

BARTHOMEUF, D ;

DEMALLMANN, A .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1990, 29 (07) :1435-1438

[5] Mass transfer in VOC adsorption on zeolite: Experimental and theoretical breakthrough curves [J].

Brosillon, S ;

Manero, MH ;

Foussard, JN .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2001, 35 (17) :3571-3575

[6] Equilibrium isotherm studies for the sorption of benzene, toluene, and phenol onto organo-zeolites and as-synthesized MCM-41 [J].

Ghiaci, M ;

Abbaspur, A ;

Kia, R ;

Seyedeyn-Azad, F .

SEPARATION AND PURIFICATION TECHNOLOGY, 2004, 40 (03) :217-229

[7] Literature review of air pollution control biofilters and biotrickling filters for odor and volatile organic compound removal [J].

Iranpour, R ;

Coxa, HHJ ;

Deshusses, MA ;

Schroeder, ED .

ENVIRONMENTAL PROGRESS, 2005, 24 (03) :254-267

[8] Removal of phenol and 4-chlorophenol by surfactant-modified natural zeolite [J].

Kuleyin, Ayse .

JOURNAL OF HAZARDOUS MATERIALS, 2007, 144 (1-2) :307-315

[9] The effect of water on the acidity of TiO2 and sulfated titania [J].

Kulkarni, AP ;

Muggli, DS .

APPLIED CATALYSIS A-GENERAL, 2006, 302 (02) :274-282

[10] The constitution and fundamental properties of solids and liquids Part I Solids [J].

Langmuir, I .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1916, 38 :2221-2295

← 1 2 →