Pecan shell based activated carbon for removal of iron(II) from fracking wastewater: Adsorption kinetics, isotherm and thermodynamic studies

被引：128

作者：

Kaveeshwar, Aditya Rajeev ^{[1
]}

Ponnusamy, Senthil Kumar ^{[2
]}

Revellame, Emmanuel D. ^{[3
,5
]}

Gang, Daniel D. ^{[4
,5
]}

Zappi, Mark E. ^{[1
,5
]}

Subramaniam, Ramalingam ^{[1
,5
]}

机构：

[1] Univ Louisiana Lafayette, Dept Chem Engn, 218 D Madison Hall,131 Rex St,POB 42291, Lafayette, LA 70504 USA

[2] SSN Coll Engn, Dept Chem Engn, Madras 603110, Tamil Nadu, India

[3] Univ Louisiana Lafayette, Dept Ind Technol, POB 43636, Lafayette, LA 70504 USA

[4] Univ Louisiana Lafayette, Dept Civil Engn, POB 42291, Lafayette, LA 70504 USA

[5] Univ Louisiana Lafayette, Energy Inst Louisiana, POB 42291, Lafayette, LA 70504 USA

来源：

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION | 2018年 / 114卷

关键词：

Adsoprtion; Fracking water; Iron; Pecan shells; Isotherms; Kinetics; AQUEOUS-SOLUTION; METAL ADSORPTION; GAS-PRODUCTION; UNITED-STATES; SHALE GAS; EQUILIBRIUM; IONS; FE(II); COPPER; ACID;

D O I：

10.1016/j.psep.2017.12.007

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Pecan shell based activated carbon (PSBAC) developed in this work had a high specific surface area (1500 m(2)/g) and pore volume (0.7 cm(3)/g). The maximum adsorption capacity of the PSBAC was found to be 41.66 mg/g at 55 mg/L iron(II), pH=3, 3 g/L adsorbent dose, at 90 min and at 30 degrees C. Iron(II) adsorption can be best described by the pseudo second order model. The adsorption system was thermodynamically favorable, endothermic and increase in entropy. The experimental data were fitted against common adsorption isotherms and yielded excellent fits in the following order: Temkin > Freundlich > Sips > Halsey Dubinin-Radushkevich > Langmuir > Harkins-Jura > Redlich-Peterson > Elovich. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：107 / 122

页数：16

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