Oil removal from produced water by conjugation of flotation and photo-Fenton processes

被引：93

作者：

da Silva, Syllos Santos ^{[1
]}

Chiavone-Filho, Osvaldo ^{[1
]}

de Barros Neto, Eduardo Lins ^{[1
]}

Foletto, Edson Luiz ^{[2
]}

机构：

[1] Univ Fed Rio Grande do Norte, Dept Chem Engn, BR-59072970 Natal, RN, Brazil

[2] Univ Fed Santa Maria, Dept Chem Engn, BR-97105900 Santa Maria, RS, Brazil

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2015年 / 147卷

关键词：

Oilfield; Produced water; Flotation; Photo-Fenton; Integration; FIELD WASTE-WATER; PHOTOCATALYTIC DEGRADATION; INTERFACIAL-TENSION; HYDROGEN-PEROXIDE; SOLAR-ENERGY; OXIDATION; OPTIMIZATION; EFFLUENT; PHENOL; OXYGEN;

D O I：

10.1016/j.jenvman.2014.08.021

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The present work investigates the conjugation of flotation and photo-Fenton techniques on oil removal performance from oilfield produced water. The experiments were conducted in a column flotation and annular lamp reactor for induced air flotation and photodegradation steps, respectively. A nonionic surfactant was used as a flotation agent. The flotation experimental data were analyzed in terms of a first-order kinetic rate model. Two experimental designs were employed to evaluate the oil removal efficiency: fractional experimental design and central composite rotational design (CCRD). Overall oil removal of 99% was reached in the optimum experimental condition after 10 min of flotation followed by 45 min of photo-Fenton. The results of the conjugation of induced air flotation and photo-Fenton processes allowed meeting the wastewater limits established by the legislations for disposal. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：257 / 263

页数：7

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