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

29204

Sigma-Aldrich

Activated Charcoal Norit^®, Norit^® RB3, steam activated, rod

93067

Sigma-Aldrich

Activated Charcoal Norit^®, Norit^® SX2, powder, from peat, multi-purpose activated charcoal, steam activated and acid washed

97876

Sigma-Aldrich

Activated Charcoal Norit^®, Norit^® CA1, wood, chemically activated, powder

37771

Sigma-Aldrich

Activated Charcoal Norit^®, Norit^® GAC 1240W, from coal, steam activated, granular

22874

Sigma-Aldrich

Activated Charcoal Norit^®, Norit^® PK 1-3, from peat, steam activated, granular

29238

Supelco

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

80485

Supelco

Activated charcoal, for the determination of AOX, 50-150 μm particle size

C2764

Sigma-Aldrich

Activated charcoal, untreated, granular, ≤5 mm

C2889

Sigma-Aldrich

Activated charcoal, untreated, granular, 8-20 mesh

C3014

Sigma-Aldrich

Activated charcoal, untreated, granular, 20-60 mesh

C7606

Sigma-Aldrich

Activated Charcoal, meets USP testing specifications

GF24441106

Carbon, tube, graphite, 150mm, outside diameter 3.18mm, inside diameter 1.18mm, wall thickness 1.0mm, 99.95%

GF62540232

Carbon, foil, 25x25mm, thickness 0.25mm, rigid graphite, fine grain size, 99.95%

GF27136100

Carbon, foil, 25x25mm, thickness 0.25mm, rigid graphite, fine grain size, 99.997%

GF99536338

Carbon, foil, 500x500mm, thickness 0.2mm, flexible graphite, 99.8%

GF27179286

Carbon, foil, 150x150mm, thickness 1.0mm, flexible graphite, 99.8%

GF57718503

Carbon, foil, 25x25mm, thickness 0.15mm, rigid graphite, fine grain size, 99.95%

GF11412470

Carbon, foil, 100x100mm, thickness 5.0mm, rigid graphite, medium grain size, 99.5%

GF07395521

Carbon, tube, graphite, 100mm, outside diameter 3.18mm, inside diameter 1.18mm, wall thickness 1.0mm, 99.95%

GF04191971

Carbon, foil, 150x150mm, thickness 0.2mm, flexible graphite, 99.8%

GF64201249

Carbon, foil, 25x25mm, thickness 2.5mm, rigid graphite, fine grain size, 99.95%

GF82985844

Carbon, foil, 150x150mm, thickness 1.0mm, rigid graphite, fine grain size, 99.95%

GF29446814

Carbon, foil, 500x500mm, thickness 0.5mm, flexible graphite, 99.8%

GF08538970

Carbon, foil, 250x250mm, thickness 0.35mm, flexible graphite, 99.8%

GF00462912

Carbon, foil, 25x25mm, thickness 0.1mm, pyrolytic graphite, 99.99%

GF34902109

Carbon, foil, 10x10mm, thickness 2.0mm, hOpg

GF23996290

Carbon, foil, 300x300mm, thickness 0.2mm, flexible graphite, 99.8%

GF01171763

Carbon, foil, 50x50mm, thickness 0.35mm, flexible graphite, 99.8%

GF15163297

Carbon, foil, 12.5x12.5mm, thickness 0.125mm, rigid graphite, fine grain size, 99.95%

GF64932947

Carbon, foil, 10mm disks, thickness 0.2mm, flexible graphite, 99.8%