Biological treatment of a dye solution by Macroalgae Chara sp.: Effect of operational parameters, intermediates identification and artificial neural network modeling

Khataee, Alireza; Dehghan, Gholamreza; Ebadi, Amanollah; Zarei, Mahmoud; Pourhassan, M.

doi:10.1016/j.biortech.2009.11.079

Cited by 175 publications

(71 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…6a), indicating that ANN model reproduced the adsorption well in this system. Similar results also observed in the previous studies (Ç elekli et al 2012;Khataee et al 2010;Yang et al 2011). Therefore, the network weights could be used to calculate the relative importance of input variables as follows:…”

Section: Effect Of Ionic Strength On Adsorptionsupporting

confidence: 82%

Evaluation of adsorption potential of bamboo biochar for metal-complex dye: equilibrium, kinetics and artificial neural network modeling

Yang

Lin

Wei³

et al. 2013

Int. J. Environ. Sci. Technol.

154

View full text Add to dashboard Cite

Metal-complex dyes are widely used in textile industry, but harmful to the environment and human health due to aromatic structure and heavy metal ions. The objective of this work was to evaluate the adsorption potential of bamboo biochar for the removal of metalcomplex dye acid black 172 from solutions. Freundlich model was more suitable for the adsorption process of bamboo biochar than Langmuir isotherm, indicating multilayer adsorption of acid black 172 on a heterogeneous bamboo biochar surface. Adsorption kinetics analysis of pseudo-second-order and Weber-Morris models revealed that intraparticle transport was not the only rate-limiting step. The bamboo biochar exhibited a good adsorption performance even at high ionic strength. Analysis based on the artificial neural network indicated that the temperature with a relative importance of 29 % appeared to be the most influential parameter in the adsorption process for dye removal, followed by time, ionic strength, pH and dye concentration.

show abstract

Section: Effect Of Ionic Strength On Adsorptionsupporting

confidence: 82%

Evaluation of adsorption potential of bamboo biochar for metal-complex dye: equilibrium, kinetics and artificial neural network modeling

Yang

Lin

Wei³

et al. 2013

Int. J. Environ. Sci. Technol.

154

View full text Add to dashboard Cite

show abstract

“…The initial concentration of MG and pH were kept constant at 10 mg/L and 7, respectively. Dye removal was enhanced by increasing the amount of plant; this could be due to the fact that increasing amount of plant provides more surface area for sorption of the dye molecules (Khataee et al, 2010(Khataee et al, , 2012.…”

Section: Effect Of Operational Parameters On Dye Removal Processmentioning

confidence: 99%

Feasibility and assessment of the phytoremediation potential of duckweed for triarylmethane dye degradation with the emphasis on some physiologicalresponses and effect of operational parameters

Torbati¹

2015

Turk J Biol

View full text Add to dashboard Cite

Phytoremediation is a low-cost and effective technology that removes pollutants, such as dye-containing effluents, from the environment through the use of plants. In the present study, the potential of Lemna minor L. for decolorization and degradation of the triarylmethane dye malachite green was investigated. The results revealed that the decolorization ability of the plant species is as high as 88%. The effect of some operational parameters (initial dye concentration, temperature, pH, and amount (weight) of plant) on the efficiency of biological decolorization process was determined. The metabolic fate of the dye was proposed by identifying 8 intermediate compounds produced during this process by gas chromatography-mass spectrometry. Some physiological responses of the plant were evaluated under 10 and 20 mg/L of the dye, with notable increases in superoxide dismutase and peroxidase activities at high concentrations. The results suggested that dye treatment induced oxidative stress and demonstrated duckweed's capacity to upregulate its antioxidative defense.

show abstract

“…Some algae (Daneshvar et al 2007;Khataee et al 2010), bacteria (Ayed et al 2010;Amoozegar et al 2011;Saratale et al 2011), fungi (Kaushik and Malik 2009;Novotný et al 2011;Verma et al 2012;Ali et al 2008;Jin et al 2007;Xian-Chun et al 2007;Fu and Viraraghavan 2001;Marimuthu et al 2013;Tegli et al 2014), and yeasts (Vitor and Corso 2008;Qu et al 2012) were proved to achieve acceptable and efficient dye removal. The vast majority of the research on biological decolorization has been carried out on fungi and mainly on their ligninolytic enzymes, discovered to degrade azo dyes aerobically (Erkurt et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Decolorization of acid and basic dyes: understanding the metabolic degradation and cell-induced adsorption/precipitation by Escherichia coli

Cerboneschi

Corsi

Bianchini

et al. 2015

Appl Microbiol Biotechnol

View full text Add to dashboard Cite

Escherichia coli strain DH5α was successfully employed in the decolorization of commercial anthraquinone and azo dyes, belonging to the general classes of acid or basic dyes. The bacteria showed an aptitude to survive at different pH values on any dye solution tested, and a rapid decolorization was obtained under aerobic conditions for the whole collection of dyes. A deep investigation about the mode of action of E. coli was carried out to demonstrate that dye decolorization mainly occurred via three different pathways, specifically bacterial induced precipitation, cell wall adsorption, and metabolism, whose weight was correlated with the chemical nature of the dye. In the case of basic azo dyes, an unexpected fast decolorization was observed after just 2-h postinoculation under aerobic conditions, suggesting that metabolism was the main mechanism involved in basic azo dye degradation, as unequivocally demonstrated by mass spectrometric analysis. The reductive cleavage of the azo group by E. coli on basic azo dyes was also further demonstrated by the inhibition of decolorization occurring when glucose was added to the dye solution. Moreover, no residual toxicity was found in the E. coli-treated basic azo dye solutions by performing Daphnia magna acute toxicity assays. The results of the present study demonstrated that E. coli can be simply exploited for its natural metabolic pathways, without applying any recombinant technology. The high versatility and adaptability of this bacterium could encourage its involvement in industrial bioremediation of textile and leather dyeing wastewaters.

show abstract

Biological treatment of a dye solution by Macroalgae Chara sp.: Effect of operational parameters, intermediates identification and artificial neural network modeling

Cited by 175 publications

References 31 publications

Evaluation of adsorption potential of bamboo biochar for metal-complex dye: equilibrium, kinetics and artificial neural network modeling

Evaluation of adsorption potential of bamboo biochar for metal-complex dye: equilibrium, kinetics and artificial neural network modeling

Feasibility and assessment of the phytoremediation potential of duckweed for triarylmethane dye degradation with the emphasis on some physiologicalresponses and effect of operational parameters

Decolorization of acid and basic dyes: understanding the metabolic degradation and cell-induced adsorption/precipitation by Escherichia coli

Contact Info

Product

Resources

About