Integration of reverse osmosis and membrane crystallization for sodium sulphate recovery

被引：40

作者：

Li, Wenqi ^{[1
]}

Van der Bruggen, Bart ^{[1
]}

Luis, Patricia ^{[2
]}

机构：

[1] Katholieke Univ Leuven, Dept Chem Engn, Proc Engn Sustainable Syst Proc, B-3001 Heverlee, Belgium

[2] Catholic Univ Louvain, Mat & Proc Engn iMMC IMAP, B-1348 Louvain La Neuve, Belgium

来源：

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2014年 / 85卷

关键词：

Na2SO4; recovery; Membrane crystallization; Reverse osmosis; Membrane-based integrated process; SULFUR-DIOXIDE; ASSISTED CRYSTALLIZATION; CARBON-DIOXIDE; DISTILLATION; WATER; ABSORPTION; SO2; ENERGY; OPTIMIZATION; PURIFICATION;

D O I：

10.1016/j.cep.2014.08.003

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Reverse osmosis and membrane crystallization are evaluated in this work as stand-alone and integrated technologies for the recovery of Na2SO4 from aqueous solutions. When SO2 is removed from flue gases by absorption in an aqueous solution and reacts with NaOH, a reusable product (i.e., Na2SO4) of industrial interest can be obtained. For stand-alone reverse osmosis, the effect of the concentration of the feed solution and pressure is studied. For membrane crystallization, the influence of the concentration and flow rate of the feed and osmotic solutions on the process performance has been determined. The characterization of the obtained crystals shows that Na2SO4 center dot 10H(2)O is obtained. From the experimental results, the potential for integration of reverse osmosis and membrane crystallization is simulated. It was concluded that using a reverse osmosis unit prior to the membrane crystallization unit minimizes the total membrane area in comparison with the stand-alone processes. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：57 / 68

页数：12

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