Towards advanced aqueous dye removal processes: a short review on the versatile role of activated carbon.

Towards advanced aqueous dye removal processes: a short review on the versatile role of activated carbon.

Journal of environmental management (2012-03-31)

Gergo Mezohegyi, Frank P van der Zee, Josep Font, Agustí Fortuny, Azael Fabregat

ABSTRACT

During the last decade, several physico-chemical and biological techniques have been developed to remove colour from textile wastewaters. Some of these techniques rely on and many will profit from activated carbon (AC). The role of AC is versatile: (1) it acts as a dye adsorbent, not only in straightforward adsorption processes but also in AC-enhanced coagulation and membrane filtration processes; (2) it generates strong oxidising agents (mostly, hydroxyl (OH) radicals) in electrochemical dye oxidation; (3) it catalyses OH production in advanced oxidation processes; (4) it catalyses anaerobic (azo) dye reduction and supports biofilm growth in microbial dye removal. This paper reviews the role of AC in dye decolourisation, evaluates the feasibility of each AC-amended decolourisation technique and discusses perspectives on future research.

MATERIALS

Product Number

Brand

Product Description

29238

Supelco

Activated Charcoal Norit^®, Norit^® RBAA-3, rod

633100

Sigma-Aldrich

Carbon, nanopowder, <100 nm particle size (TEM)

GF24425805

Carbon - Vitreous, rod, 200mm, diameter 7.0mm, glassy carbon

GF65427587

Carbon - Vitreous, rod, 100mm, diameter 3.0mm, glassy carbon

GF23417434

Carbon, foil, 100x100mm, thickness 1.0mm, flexible graphite, 99.8%

GF59400233

Carbon - Vitreous, tube, 100mm, outside diameter 10mm, inside diameter 3mm, wall thickness 3.5mm, glassy carbon

GF61342220

Carbon - Vitreous, foam, 150x150mm, 0.05g.cmué, porosity 96.5%, 24 pores/cm

GF99431523

Carbon - Vitreous, foil, 10x10mm, thickness 4.0mm, glassy carbon

GF86742120

Carbon, foil, 100x100mm, thickness 0.5mm, rigid graphite, fine grain size, 99.997%

GF20176680

Carbon - Vitreous, rod, 5mm, diameter 3.0mm, glassy carbon

GF19690735

Carbon - Vitreous, foil, 50x50mm, thickness 4.0mm, glassy carbon

GF39873369

Carbon - Vitreous, foam, 150x150mm, thickness 3.2mm, bulk density 0.05g/cm³, porosity 96.5%

GF72189782

Carbon - Vitreous, rod, 100mm, diameter 1.0mm, glassy carbon

GF06230922

Carbon - Vitreous, foam, 300x300mm, thickness 30mm, bulk density 0.05g/cm³, porosity 96.5%

GF91212511

Carbon, foil, 100x100mm, thickness 0.25mm, rigid graphite, fine grain size, 99.95%

GF37715182

Carbon, foil, 100x100mm, thickness 0.5mm, rigid graphite, fine grain size, 99.95%

GF93251011

Carbon - Vitreous, rod, 50mm, diameter 1.0mm, glassy carbon

GF96762864

Carbon - Vitreous, foil, 50x50mm, thickness 1.0mm, glassy carbon

GF44375609

Carbon, foil, 100x100mm, thickness 2.5mm, rigid graphite, fine grain size, 99.95%

GF04031132

Carbon - Vitreous, foam, 300x300mm, thickness 20mm, bulk density 0.05g/cm³, porosity 96.5%

GF13300322

Carbon, foil, 100x100mm, thickness 0.125mm, rigid graphite, fine grain size, 99.95%

GF68195403

Carbon - Vitreous, rod, 100mm, diameter 7.0mm, glassy carbon

GF89520521

Carbon - Vitreous, foil, 25x25mm, thickness 4.0mm, glassy carbon

GF05962765

Carbon - Vitreous, rod, 100mm, diameter 5.0mm, glassy carbon

GF09325009

Carbon - Vitreous, foil, 100x100mm, thickness 6.0mm, glassy carbon

GF46470944

Carbon, foil, 100x100mm, thickness 0.35mm, flexible graphite, 99.8%

GF10355958

Carbon - Vitreous, foil, 25x25mm, thickness 0.5mm, glassy carbon

GF61313600

Carbon, foil, 100x100mm, thickness 1.0mm, rigid graphite, fine grain size, 99.95%

GF39088648

Carbon - Vitreous, tube, 50mm, outside diameter 10mm, inside diameter 3mm, wall thickness 3.5mm, glassy carbon

GF07378476

Carbon - Vitreous, foam, 150x150mm, thickness 2.5mm, bulk density 0.05g/cm³, porosity 96.5%