Activated carbons from sisal waste by chemical activation with K2CO3: Kinetics of paracetamol and ibuprofen removal from aqueous solution

被引：131

作者：

Mestre, Ana S. ^{[2
,3
]}

Bexiga, Ana S. ^{[1
,2
,3
]}

Proenca, Margarida ^{[1
,2
,3
]}

Andrade, Marta ^{[2
,3
]}

Pinto, Moises L. ^{[2
,3
]}

Matos, Ines ^{[1
]}

Fonseca, Isabel M. ^{[1
]}

Carvalho, Ana P. ^{[2
,3
]}

机构：

[1] Univ Nova Lisboa, REQUIMTE, Dept Quim, Fac Ciencias & Tecnol, P-2829516 Quinta Da Torre, Caparica, Portugal

[2] Univ Nova Lisboa, Dept Quim & Bioquim, P-1749016 Lisbon, Portugal

[3] Univ Nova Lisboa, Fac Ciencias, CQB, P-1749016 Lisbon, Portugal

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 17期

关键词：

Sisal; Activated carbons; K2CO3; Ibuprofen; Paracetamol; SURFACE-CHEMISTRY; PHOSPHORIC-ACID; ADSORPTION; PHARMACEUTICALS; FIBERS; WATER; RESIDUES; SYSTEMS;

D O I：

10.1016/j.biortech.2011.06.024

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Sisal waste was used as precursor to prepare carbons by chemical activation. The influence of the K2CO3 amount and activation temperature on the materials textural properties were studied through N-2 and CO2 adsorption assays. As the severity of the treatment increases there is a development of supermicropores, and the micropore size distribution changes from mono to bimodal. A carbon with an apparent surface area of 1038 m(2) g(-1) and pore volume of 0.49 cm(3) g(-1) was obtained. TPD results showed the incidence in acidic type groups although the pH(PZC) reveals an almost neutral character of the surface. Adsorption kinetic data of ibuprofen and paracetamol show that the processes obey to a pseudo-second order kinetic equation. Regarding the removal efficiency the prepared samples attained values comparable to a commercial carbon (>65%), revealing that chemical activation of sisal wastes with K2CO3 allows obtaining samples suitable for pharmaceutical compounds removal from liquid phase. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：8253 / 8260

页数：8

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