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Bhatt, Manish; Patel, Mohan N.; Rawal, B.; Novotný, Čeněk; Molitoris, Hans-Peter; Šašek, V.

doi:10.1023/a:1008937503675

Cited by 38 publications

(5 citation statements)

References 14 publications

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“…A modified method for dye desorption from soil samples, as described by Bhatt et al [30], was adopted. A mixture of methanol, chloroform and water in equal v/v ratio (1:1:1) was used for the desorption of effluent colour from the barley husks post SS-fermentation in order to estimate the amount of dyes degraded, this method of desorption was previously optimised by us….…”

Section: Desorption Of Synthetic Textile-dye Effluent From Barley Husksmentioning

confidence: 99%

Remediation of Textile Dye Waste Water Using a White-Rot Fungus Bjerkandera adusta Through Solid-state Fermentation (SSF)

Robinson

Nigam

2008

Appl Biochem Biotechnol

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A strict screening strategy for microorganism selection was followed employing a number of white-rot fungi for the bioremediation of textile effluent, which was generated from one Ireland-based American textile industry. Finally, one fungus Bjerkandera adusta has been investigated in depth for its ability to simultaneously degrade and enrich the nutritional quality of highly coloured textile effluent-adsorbed barley husks through solid-state fermentation (SSF). Certain important parameters such as media requirements, moisture content, protein/biomass production and enzyme activities were examined in detail. A previously optimised method of dye desorption was employed to measure the extent of dye remediation through effluent decolorisation achieved as a result of fungal activity in SSF. B. adusta was capable of decolourising a considerable concentration of the synthetic dye effluent (up to 53%) with a moisture content of 80-85%. Protein enrichment of the fermented mass was achieved to the extent of 229 g/kg dry weight initial substrate used. Lignin peroxidase and laccase were found to be the two main enzymes produced during SSF of the dye-adsorbed lignocellulosic waste residue.

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Section: Desorption Of Synthetic Textile-dye Effluent From Barley Husksmentioning

confidence: 99%

Remediation of Textile Dye Waste Water Using a White-Rot Fungus Bjerkandera adusta Through Solid-state Fermentation (SSF)

Robinson

Nigam

2008

Appl Biochem Biotechnol

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“…This was due to the woodchips giving a yellowish color to the effluent and thus raising the absorbance measurement when assessed using spectrophotometer at the same wavelength. Decolorization occurred because adsorption by soil particles, organic matter, and sand particles went well [11], but not when the water reached the woodchips layer. Other than adsorption, degradation by proteins secreted by living organisms could affect the level of decolorization, because when substrates were sampled and re-dissolved into water, no color was produced; this indicates that not only adsorption occurred in the systems (because adsorbed materials could be released back into the environment and create the same effect as before) [11].…”

Section: A Reduction Of Chromiummentioning

confidence: 97%

Effectivity of Vertical Sub-Surface Downflow Constructed Wetland System with Varying Composition in Reducing Chromium and Color in Synthetic Textile Wastewater

2016

IJACEBS

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Abstract-Textile and leather tannery wastewater pollute water bodies with their content of chromium metal (Cr) and synthetic dyes which are highly toxic. The use of constructed wetland systems is an approach to treat such wastewater before being discharged directly into the environment. This study was conducted to examine the effectiveness of vertical sub-surface downflow constructed wetlands with varying composition in decreasing Cr concentration and color thickness (value) in synthetic textile wastewater. Systems were varied by substrate composition and presence of the plant Leersia hexandra. Synthetic textile wastewater containing K 2 Cr 2 O 7 and reactive dye were flowed downward into five systems: (1) soil-sandgravel substrate, without plants; (2) soil-sand-wood chips substrate, without plants; (3) soil-sand-gravel substrate, and L.hexandra plants; (4) soil-sand-wood chips substrate, and L. hexandra plants; and (5) a system without substrate or plants as control. Chromium concentration and color thickness were measured at 8, 16, 24, 32 and 40 hours after treatment. Measurements at 8 hours showed that systems no. 1, 2, 3, and 4 decreased Cr concentration in effluent as much as 87,6%; 79,1%; 81,4%; and 89,2% respectively. Meanwhile Cr concentration in the control system's effluent remained relatively constant. Systems no. 1, 2, 3, and 4 decolorized the effluent up to 94,6%; 89,6%; 93,4%; and 86,0% respectively; meanwhile, color in the control system was unchanged. All four treatment systems could effectively reduce Cr concentration and color thickness in synthetic textile wastewater. However, results did not support the hypothesis that the presence of plants would significantly affect Cr removal, or that the addition of wood chips to substrate would enhance decolorization effects.

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“…Remazol Brilliant Blue R is a harmful anthraquinone dye used in the textile industry. It is stable and does not decompose biologically due to the presence of aromatic rings. − RBBR dye degradation was carried out in both dark and photocatalytic conditions. To compare the removal efficiencies of RBBR dye, control experiments were carried out.…”

Section: Photocatalytic Applicationmentioning

confidence: 99%

Metal Exchange of ZIF-8 and ZIF-67 Nanoparticles with Fe(II) for Enhanced Photocatalytic Performance

2021

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Zeolitic imidazolate frameworks (ZIFs), such as ZIF-8 and ZIF-67, were found to be efficient catalysts. However, ZIFs are not used much in photocatalysis due to their low photocatalytic activity for most reactions. The photocatalytic activity can be improved by modifying the framework by exchanging the Zn(II) ions (ZIF-8) and Co(II) ions (ZIF-67) with a more photocatalytically active metal(II) ion to form an efficient bimetallic ZIF photocatalyst. Redox-active iron (Fe)-based materials are known to be highly potent photocatalysts. Thus, incorporating iron into ZIFs could significantly enhance their photocatalytic performance. In this study, we modified nanosized ZIF-8(Zn) and ZIF-67(Co) via metal (Fe2+) exchange to produce bimetallic frameworks that are photocatalytically more active than their parent ZIFs. Nanosized ZIF-8 and ZIF-67 were synthesized isothermally in either water or methanol under ambient conditions. From these, Fe-containing bimetallic ZIF-8 and ZIF-67 nanoparticles were synthesized via the metal exchange, and their performance on the photocatalytic degradation of dye was evaluated. The morphology and crystal structures of the pristine ZIF-8 and ZIF-67 nanoparticles were retained to a large extent during the iron exchange. Their Brunauer–Emmett–Teller (BET) surface areas decreased by less than 15% for nZIF-8 and less than 12% for nZIF-67. The binding energy values on X-ray photoelectron spectroscopy (XPS) confirmed the preservation of the oxidation state of Fe(II) during the exchange process. A remarkably higher catalytic activity was observed for the photocatalytic degradation of dye by the Fe-exchanged nZIF-8 and nZIF-67 compared to their parent ZIFs. This proved that the incorporation of Fe(II) centers into the ZIF framework enhanced the photocatalytic activity of the framework dramatically. In addition, these catalysts can be regenerated and reused without an appreciable loss in activity.

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Cited by 38 publications

References 14 publications

Remediation of Textile Dye Waste Water Using a White-Rot Fungus Bjerkandera adusta Through Solid-state Fermentation (SSF)

Remediation of Textile Dye Waste Water Using a White-Rot Fungus Bjerkandera adusta Through Solid-state Fermentation (SSF)

Effectivity of Vertical Sub-Surface Downflow Constructed Wetland System with Varying Composition in Reducing Chromium and Color in Synthetic Textile Wastewater

Metal Exchange of ZIF-8 and ZIF-67 Nanoparticles with Fe(II) for Enhanced Photocatalytic Performance

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