Adsorption mechanism of chromium(III) using biosorbents of Jatropha curcas L.

被引：23

作者：

Goncalves, Affonso Celso, Jr. ^{[1
]}

Nacke, Herbert ^{[1
]}

Schwantes, Daniel ^{[2
]}

Campagnolo, Marcelo Angelo ^{[3
]}

Miola, Alisson Junior ^{[1
]}

Teixeira Tarley, Cesar Ricardo ^{[4
]}

Dragunski, Douglas Cardoso ^{[5
]}

Cajamarca Suquila, Fabio Antonio ^{[4
]}

机构：

[1] State Univ Western Parana, Ctr Agr Sci, Pernambuco St 777, BR-85960000 Rondon, PR, Brazil

[2] Univ Fed Parana, Dept Engn, Agron, Pioneiro St 2154, BR-85950000 Palotina, Brazil

[3] Pontificia Univ Catolica Parana, Polytech Sch, Environm Engn, Uniao Ave 500, BR-85902532 Toledo, Brazil

[4] Univ Estadual Londrina, Dept Chem, BR-86050482 Londrina, PR, Brazil

[5] State Univ Western Parana, Dept Chem, Coll St 645, BR-85903000 Toledo, PR, Brazil

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2017年 / 24卷 / 27期

关键词：

Agro-industrial wastes; Natural adsorbents; Recuperation of water sources; Chromium; LIQUID-PHASE ADSORPTION; PALM KERNEL FIBER; AQUEOUS-SOLUTION; HEAVY-METALS; ACTIVATED CARBON; WASTE-WATER; HEXAVALENT CHROMIUM; METHYLENE-BLUE; RICE HUSK; REMOVAL;

D O I：

10.1007/s11356-017-9749-z

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The removal of Cr3+ from water solutions by biosorbents from the rind, endosperm, and endosperm + episperm of the Jatropha curcas was evaluated. Adsorption tests were performed in batch systems for evaluating the influence of the solution's pH, adsorbent mass, contact time, initial Cr3+ concentrations, and solution temperature during the adsorption process. Kinetic, adsorption isotherm, and thermodynamic studies were performed to investigate the mechanisms that control adsorption. Ideal conditions for the adsorption process included pH of the solution of 5.5 and 8 g L-1 adsorbent mass, within 60 min time contact between adsorbent and adsorbate. Maximum adsorption capacities by Langmuir model for rind, endosperm, and endosperm + episperm of the J. curcas were, respectively, 22.11, 18.20, and 22.88 mg g(-1), with the occurrence of chemosorption in mono and multilayers. Results show that the biosorbents obtained from J. curcas have a high potential to recuperate Cr3+ from contaminated water sources.

引用

页码：21778 / 21790

页数：13

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