Decolorization pathways of anthraquinone dye Disperse Blue 2BLN by Aspergillus sp. XJ-2 CGMCC12963

Abstract

Anthraquinone dye represents an important group of recalcitrant pollutants in dye wastewater. Aspergillus sp XJ-2 CGMCC12963 showed broad-spectrum decolorization ability, which could efficiently decolorize and degrade various anthraquinone dyes (50 mg L ¡1 ) under microaerophilic condition. And the decolorization rate of 93.3% was achieved at 120 h with Disperse Blue 2BLN (the target dye). Intermediates of degradation were detected by FTIR and GC-MS, which revealed the cleavage of anthraquinone chromophoric group and partial mineralization of target dye. In addition, extracellular manganese peroxidase showed the most closely related to the increasing of decolorization rate and biomass among intracellular and extracellular ligninolytic enzymes. Given these results, 2 possible degraded pathways of target dye by Aspergillus sp XJ-2 CGMCC12963 were proposed first in this work. The degradation of Disperse Blue 2BLN and broad spectrum decolorization ability provided the potential for Aspergillus sp XJ-2 CGMCC12963 in the treatment of wastewater containing anthraquinone dyes.

Use of bacterial isolates in the treatment of textile dye wastewater: A review

“…Bacterial strains have been used successfully to degrade and decolourise dye containing textile effluents with focus being targeted at azo dyes [ 35 , 36 , 37 ], anthraquinone [ 38 , 39 , 40 ] and triphenylmethane based dyes [ 41 , 42 ], largely because of their hazardous nature and their large consumption rates within the industry. Most of the bacterial species that have been used to degrade and decolourise dyes have been isolated from soil collected from areas surrounding the textile manufacturing plants [ 43 ], textile effluent sludge waste [ 44 ], and dye contaminated textile wastewater [ 45 ].…”

Degradation and detoxification of azo dyes with recombinant ligninolytic enzymes from Aspergillus sp. with secretory overexpression in Pichia pastoris

“…One unit of enzymatic activity was defined as the amount of enzyme transforming 1 µmol of the substrate per minute. The determined enzyme activities were referenced to the results of Pan et al [32]. Protein concentrations were measured using the Bradford assay (Coomassie brilliant blue) and bovine serum albumin as the standard.…”

“…The GC-MS analysis was performed using an Agilent 7890A gas chromatograph system coupled to an Agilent 5975C inert mass-selective detector with a Triple-Axis detector system (Agilent Technologies Inc., USA). Specific parameters were referenced to the results of Pan et al [32].…”

Enhanced Efficiency of the Removal of Cytostatic Anthracycline Drugs Using Immobilized Mycelium of Bjerkandera adusta CCBAS 930

“…In the environment, white rot fungi synthesize oxidoreductases, e.g., peroxidases, which facilitate the biodegradation of the lignocellulose complex of plant biomass. Due to their wide range of substrates, fungal peroxidases can decompose compounds with an aromatic structure, e.g., pesticides, melanoidin, industrial dyes, post-industrial lignin, personal care products, and pharmaceuticals [8,14,[16][17][18][19][20][21][22][23].…”