Study of Removal Techniques for Azo Dyes by Biosorption: A Review

Sharma, Sapna; Saxena, Ranjana; Gaur, Ghanesh

doi:10.9790/5736-071010621

Cited by 18 publications

(20 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The biosorption capacity of a microorganism is attributed to the heteropolysaccharide and lipid components of the cell wall (Solis et al 2012). Nevertheless, dye biosorption can only concentrate the pollution causing a problem of their management and cannot eliminate their hazardous risks (Sharma et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

Mnif

Maktouf

Fendri

et al. 2015

Environ Sci Pollut Res

View full text Add to dashboard Cite

Aeromonas veronii GRI (KF964486), isolated from acclimated textile effluent after selective enrichment on azo dye, was assessed for methyl orange biodegradation potency. Results suggested the potential of this bacterium for use in effective treatment of azo-dye-contaminated wastewaters under static conditions at neutral and alkaline pH value, characteristic of typical textile effluents. The strain could tolerate higher doses of dyes as it was able to decolorize up to 1000 mg/l. When used as microbial surfactant to enhance methyl orange biodecolorization, Bacillus subtilis SPB1-derived lipopeptide accelerated the decolorization rate and maximized slightly the decolorization efficiency at an optimal concentration of about 0.025%. In order to enhance the process efficiency, a Taguchi design was conducted. Phytotoxicity bioassay using sesame and radish seeds were carried out to assess the biotreatment effectiveness. The bacterium was able to effectively decolorize the azo dye when inoculated with an initial optical density of about 0.5 with 0.25% sucrose, 0.125% yeast extract, 0.01% SPB1 biosurfactant, and when conducting an agitation phase of about 24 h after static incubation. Germination potency showed an increase toward the nonoptimized conditions indicating an improvement of the biotreatment. When comparing with synthetic surfactants, a drastic decrease and an inhibition of orange methyl decolorization were observed in the presence of CTAB and SDS. The nonionic surfactant Tween 80 had a positive effect on methyl orange biodecolorization. Also, studies ensured that methyl orange removal by this strain could be due to endocellular enzymatic activities. To conclude, the addition of SPB1 bioemulsifier reduced energy costs by reducing effective decolorization period, biosurfactant stimulated bacterial decolorization method may provide highly efficient, inexpensive, and time-saving procedure in treatment of textile effluents.

show abstract

Section: Introductionmentioning

confidence: 99%

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

Mnif

Maktouf

Fendri

et al. 2015

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…3b. [1,23]. MeO is hazardous for aquatic life and is accepted as a model pollutant for photocatalytic degradation reactions [24].…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterisation of TiO ₂ nanoparticles/Fe ₂ O ₃ waste chips composite

Koohestani

2019

Micro & Nano Letters

View full text Add to dashboard Cite

Water contamination along with the environmental issues resulted by industrial wastewaters have caused a trend in applying semiconducting photocatalysts, among which TiO 2 composites have been particularly focused on to overcome the drawbacks of titanium(IV) oxide also known as titania. In the current investigation, waste chips of a structural steel bar with the chemical composition of Fe 2 O 3 were utilised to obtain the TiO 2-Fe 2 O 3 composite. X-ray diffraction (XRD), field-emission scanning electron microscopy, energy dispersive spectroscopy, diffusive reflectance spectra, and Brunauer-Emmett-Teller analyses were made to evaluate the composition and structure of the samples. Furthermore, the photocatalytic performance of the samples was studied by methyl orange (MeO) degradation. XRD spectra proved the presence of anatase and Fe 2 O 3 phases in the sample of 10%wt. Fe 2 O 3. The results indicate that as the Fe 2 O 3 content rises, the bandgap narrows. However, the specific surface area enlarges as this amount goes up to a certain limit (10%wt.), from which any further increase leads to a reduction in the specific surface area. The obtained results of MeO decolourisation presented the Fe 2 O 3 of 10%wt. and bandgap of 2.72 eV, and the specific surface area of 63 m 2 /g to be of the highest efficiency (96%).

show abstract

“…Addition of excessive amount of coagulants can be avoided, due to their in situ generation by electro-oxidation of a sacrificial anode. EC equipment is simple and easy to operate and there is no sludge production [22]. The mechanism of EC is highly dependent on the chemistry of the aqueous medium, especially conductivity and also on other characteristics such as pH, particle size, and chemical constituent concentrations.…”

Section: Figure 1 Reaction At Anode and Cathodementioning

confidence: 99%

“…Various sorbents are already being used such as mango peel, orange peel, banana peel, neem leaves, tree bark etc. Removal of dyes by using bio-sorbents occurs by the mechanism of reaction with proteinaceous material and due to the affinity to adsorbate species, the latter is attracted and removed [6]. Researchers are still finding new techniques to remove azo dyes from wastewater [6].…”

Section: Introductionmentioning

confidence: 99%

“…Removal of dyes by using bio-sorbents occurs by the mechanism of reaction with proteinaceous material and due to the affinity to adsorbate species, the latter is attracted and removed [6]. Researchers are still finding new techniques to remove azo dyes from wastewater [6]. Dyes can commonly be classified as per the fibres to which they can be applied, and their chemical nature as: 1.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Removal of Colour From Textile Wastewater by Different Methods

2017

IJAERD

View full text Add to dashboard Cite

show abstract

Study of Removal Techniques for Azo Dyes by Biosorption: A Review

Cited by 18 publications

References 60 publications

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

Synthesis and characterisation of TiO ₂ nanoparticles/Fe ₂ O ₃ waste chips composite

Removal of Colour From Textile Wastewater by Different Methods

Contact Info

Product

Resources

About

Study of Removal Techniques for Azo Dyes by Biosorption: A Review

Cited by 18 publications

References 60 publications

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

Synthesis and characterisation of TiO 2 nanoparticles/Fe 2 O 3 waste chips composite

Removal of Colour From Textile Wastewater by Different Methods

Contact Info

Product

Resources

About

Synthesis and characterisation of TiO ₂ nanoparticles/Fe ₂ O ₃ waste chips composite