Biodegradation of reactive dye (Verofix Red) by the white-rot fungus Phanerochaete chrysosporium using Box-Behnken experimental design

1999 ◽  
Vol 20 (5) ◽  
pp. 435-440 ◽  
Author(s):  
G. Nagarajan ◽  
G. Annadurai
2006 ◽  
Vol 1 (3) ◽  
Author(s):  
Dawen Gao ◽  
Xianghua Wen ◽  
Yonggang Zeng ◽  
Yi Qian

Most studies on decolourization of reactive dye with Phanerochaete chrysosporium have been performed under sterile conditions. In this paper, Phanerochaete chrysosporium, suspended in liquid medium, immobilized on nylon nets, and immobilized on polyurethane foams were studied to decolorize a textile-reactive dye in agitated liquid incubation under non-sterile conditions. The results showed that the decolourization against reactive brilliant red K-2BP by mycelia pellets in suspended cultures, the fungi immobilized on nylon nets and immobilized on polyurethane foams were 0%, 52% and 95%, respectively. The suspended incubation system and the system with nylon nets were contaminated with yeasts, which deteriorated the decolourization effects. The three-dimensional reticular structure of polyurethane foam was benefit to Phanerochaete chrysosporium growth in spreading mycelia taking nutrients and oxygen effectively. The foam could quickly absorb liquid medium into its holes, leaving much less nutrients to support the growth of single cell micro-organisms such as yeast in liquid. The micro-environment existed in polyurethane foam was close to the wild growth conditions of white rot fungus in nature. In conclusion, immobilized culture with polyurethane foam carriers is advantaged to reduce the colonization of other micro-organisms, and makes Phanerochaete chrysosporium possess higher decolorizing ability under non-sterile conditions.


2014 ◽  
Vol 175 (3) ◽  
pp. 1281-1293 ◽  
Author(s):  
Qihua Zhang ◽  
Guangming Zeng ◽  
Guiqiu Chen ◽  
Min Yan ◽  
Anwei Chen ◽  
...  

2018 ◽  
Vol 162 ◽  
pp. 225-234 ◽  
Author(s):  
Zhu Ming ◽  
Shicheng Feng ◽  
Ailimire Yilihamu ◽  
Shengnan Yang ◽  
Qiang Ma ◽  
...  

2021 ◽  
Vol 11 (2) ◽  
pp. 91-99
Author(s):  
Vivekanandhan K. ◽  
Dr.M.P. Ayyappadas ◽  
Dr. S. K. Ayyappadas ◽  
R. Renugadevi, ◽  
M. Flory Shobana ◽  
...  

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1340 ◽  
Author(s):  
Qiang Ma ◽  
Ailimire Yilihamu ◽  
Zhu Ming ◽  
Shengnan Yang ◽  
Mengyao Shi ◽  
...  

Carbon nanomaterials are widely studied and applied nowadays, with annual production increasing. After entering the environment, the complete degradation of these carbon nanomaterials by microorganisms is proposed as an effective approach for detoxification and remediation. In this study, we evaluated the degradation of pristine multiwalled carbon nanotubes (p-MWCNTs) and oxidized multiwalled carbon nanotubes (o-MWCNTs) by the white rot fungus Phanerochaete chrysosporium, which is a powerful decomposer in the carbon cycle and environmental remediation. Both p-MWCNTs and o-MWCNTs were partially oxidized by P. chrysosporium as indicated by the addition of oxygen atoms to the carbon skeleton in the forms of C=O and O–H bonds. The fungal oxidation led to the shortening of MWCNTs, where precipitated o-MWCNTs showed more short tubes. During the transformation, the defects on the tubes became detached from the carbon skeleton, resulting in decreases of the ID/IG (intensity of D-band/ intensity of G-band) values in Raman spectra. The transformation mechanism was attributed to the enzymatic degradation by laccase and manganese peroxidase excreted by P. chrysosporium. The results collectively indicated that MWCNTs could be transformed by P. chrysosporium, but complete degradation could not be achieved in a short time period. The implications on the environmental risks of carbon nanomaterials are discussed.


Sign in / Sign up

Export Citation Format

Share Document