STATISTISTICAL OPTIMIZATION OF CHROMIUM IONS ADSORPTION ON DEHPA-IMPREGNATED AMBERLITE XAD7

被引：7

作者：

Ciopec, Mihaela ^{[1
]}

Davidescu, Corneliu Mircea ^{[1
]}

Negrea, Adina ^{[1
]}

Grozav, Ion ^{[2
]}

Lupa, Lavinia ^{[1
]}

Muntean, Cornelia ^{[1
]}

Negrea, Petru ^{[1
]}

Popa, Adriana ^{[3
]}

机构：

[1] Politehn Univ Timisoara, Fac Ind Chem & Environm Engn, Timisoara 300006, Romania

[2] Politehn Univ Timisoara, Fac Mech, Timisoara 300006, Romania

[3] Romanian Acad, Inst Chem Timisoara, Timisoara 300223, Romania

来源：

ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL | 2012年 / 11卷 / 03期

关键词：

Amberlite XAD7; chromium; design; di-(2-ethylhexyl)-phosphoric acid; SIRs; PRECONCENTRATION; RESINS; METALS; CD(II); ZN(II);

D O I：

10.30638/eemj.2012.065

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Statistical thinking and statistical methods play an important role in planning, conducting, analyzing and interpreting data from experiments. When several variables influence a certain characteristic of a product, the best strategy is then to design an experiment so that valid, reliable and sound conclusions can be drawn effectively, efficiently and economically. The present paper investigates the efficiency of chromium ions removal onto Amberlite XAD7 using the solvent impregnated resin (SIRs) method. The Amberlite XAD7 resin was impregnated with di-(2-ethylhexyl)-phosphoric acid (DEHPA) and ethylic alcohol as solvent by dynamic column impregnation method. The results showed that the maximum efficiency of chromium ions removal was reached after 60 min. At this moment, the efficiency of chromium ions removal was of similar to 90%. In this paper the design of experiments was used to study the performance of a chemical process. The process transforms the inputs into an output that has two observable responses (absorbability and efficiency). By analyzing the results of the second-order model, the process has been optimized.

引用

页码：525 / 531

页数：7

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