Mineralization of sulfolane in aqueous solutions by Ozone/CaO2 and Ozone/CaO with potential for field application

被引：41

作者：

Izadifard, Maryam ^{[1
]}

Achari, Gopal ^{[1
]}

Langford, Cooper H. ^{[2
]}

机构：

[1] Univ Calgary, Dept Civil Engn, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada

[2] Univ Calgary, Dept Chem, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada

来源：

CHEMOSPHERE | 2018年 / 197卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Calcium peroxide; Lime; Ozone; Sulfolane; Groundwater; CALCIUM PEROXIDE; OZONATION; WATER; DEGRADATION; OXIDATION; DIISOPROPANOLAMINE; MECHANISM; UV;

D O I：

10.1016/j.chemosphere.2018.01.072

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Mineralization of sulfolane in aqueous systems by CaO2/O-3 and CaO/O-3 was investigated in this study. If 1.6 g/L of oxidants (CaO2 and CaO) were used along with 5 L/min of O-3 in a batch reactor, degradation of sulfolane followed a pseudo-first order kinetics model. Both sulfolane and TOC were totally removed in less than 40 and 150 min respectively. For these treatments, the pH of the aqueous solutions was above 11, which made O-3 more effective in removing sulfolane. However, the high pH of the solution didn't improve TOC removal. For TOC removal the presence of CaO2 and CaO was necessary. Once these conditions were optimised in the lab, field experiments were designed and evaluated to treat contaminated ground water samples. The field tests were successful in mineralization of sulfolane within a reasonable time (4 h). Sulfolane degradation took 150 min in these experiments. The pH of the water samples was brought to near neutral (pH= 6.5) by bubbling CO2. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：535 / 540

页数：6

共 37 条

[1]

Agatonovic V., 2005, Sulfolane Impacted Soil and Groundwater Treatibility Study

[2] Infrared study of ozone adsorption on CaO [J].

Bulanin, KM ;

Lavalley, JC ;

Tsyganenko, AA .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (15) :2917-2922

[3] The use of ozone and associated oxidation processes in drinking water treatment [J].

Camel, V ;

Bermond, A .

WATER RESEARCH, 1998, 32 (11) :3208-3222

[4]

Chou C.C., 1983, Proceedings 37th Industrial Waste Conference, West Lafayette, IN, Purdue University, P559

[5] Trends and strategies of ozone application in environmental problems [J].

da Silva, LM ;

Jardim, WF .

QUIMICA NOVA, 2006, 29 (02) :310-317

[6] Electrochemistry and green chemical processes: Electrochemical ozone production [J].

da Silva, LM ;

Santana, MHP ;

Boodts, JFC .

QUIMICA NOVA, 2003, 26 (06) :880-888

[7] Uptake of sulfolane and diisopropanolamine (DIPA) by cattails (Typha latifolia) [J].

Doucette, WJ ;

Chard, JK ;

Moore, BJ ;

Staudt, WJ ;

Headley, JV .

MICROCHEMICAL JOURNAL, 2005, 81 (01) :41-49

[8] Sulfolane degradation by mixed cultures and a bacterial isolate identified as a Variovorax sp. [J].

Greene, EA ;

Beatty, PH ;

Fedorak, PM .

ARCHIVES OF MICROBIOLOGY, 2000, 174 (1-2) :111-119

[9]

Hoigne J., 1988, CHEM OZONE PROCESS T

[10] Calcium enhanced COD removal for the ozonation of phenol solution [J].

Hsu, Yung-Chien ;

Chen, Jyh-Herng ;

Yang, Hsiang-Cheng .

WATER RESEARCH, 2007, 41 (01) :71-78

← 1 2 3 4 →