Development of low cost upflow column bioreactor for degradation and detoxification of Blue HERD and textile effluent by Lysinibacillus sp. RGS immobilized on Loofa

Bedekar, Priyanka A.; Saratale, Ganesh Dattatraya; Govindwar, Sanjay P.

doi:10.1016/j.ibiod.2014.09.007

Cited by 28 publications

(11 citation statements)

References 31 publications

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“…To remove the dyes from a substantial amount of wastewater generated from the textile and dyestuff industries, there is a need for a continuous treatment process like immobilized microbial culture column reactors. Recently single culture immobilized bioreactors for the treatment of azo dyes and textile effluents under continuous operation using Luffa cylindrica as the immobilization material were reported [ 20 , 53 ]. However, single culture could not remove the mixture of structurally different dyes presents in the textile effluents as compared to microbial consortia [ 19 ], while, the mixed culture immobilized bioreactors are considered to represent a high rate continuous process suitable for the treatment of large amounts of dye-containing wastewaters [ 21 ].…”

Section: Resultsmentioning

confidence: 99%

“…This takes advantage of microorganisms to breakdown dyes and convert them into CO 2 and H 2 O [ 16 ]. A wide spectrum of microorganisms, including bacteria and fungi, has been reported for the degradation of azo dyes [ 17 , 18 , 19 ] and different bioreactor studies have also been performed with pure cultures as well as their consortia [ 20 , 21 ]. It is worth mentioning that many of these studies were often performed with single cultures which are known to form toxic aromatic amines as azo dye degradation metabolites.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the studies on dye-degrading bioreactors often use defined growth media such as nutrient broth, which is not affordable for use at commercial levels [ 27 ]. Alternatively, the use of agricultural waste as a growth medium has been suggested a low-cost alternative to make bioreactor use more economical [ 20 , 22 ]. Millions of tonnes of crop biomass and their by-products are generated as agricultural waste every year worldwide and are abundantly available at low-cost [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

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Mineralization and Detoxification of the Carcinogenic Azo Dye Congo Red and Real Textile Effluent by a Polyurethane Foam Immobilized Microbial Consortium in an Upflow Column Bioreactor

Lade

Govindwar

Paul

2015

IJERPH

120

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A microbial consortium that is able to grow in wheat bran (WB) medium and decolorize the carcinogenic azo dye Congo red (CR) was developed. The microbial consortium was immobilized on polyurethane foam (PUF). Batch studies with the PUF-immobilized microbial consortium showed complete removal of CR dye (100 mg·L−1) within 12 h at pH 7.5 and temperature 30 ± 0.2 °C under microaerophilic conditions. Additionally, 92% American Dye Manufactureing Institute (ADMI) removal for real textile effluent (RTE, 50%) was also observed within 20 h under the same conditions. An upflow column reactor containing PUF-immobilized microbial consortium achieved 99% CR dye (100 mg·L−1) and 92% ADMI removal of RTE (50%) at 35 and 20 mL·h−l flow rates, respectively. Consequent reduction in TOC (83 and 79%), COD (85 and 83%) and BOD (79 and 78%) of CR dye and RTE were also observed, which suggested mineralization. The decolorization process was traced to be enzymatic as treated samples showed significant induction of oxidoreductive enzymes. The proposed biodegradation pathway of the dye revealed the formation of lower molecular weight compounds. Toxicity studies with a plant bioassay and acute tests indicated that the PUF-immobilized microbial consortium favors detoxification of the dye and textile effluents.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mineralization and Detoxification of the Carcinogenic Azo Dye Congo Red and Real Textile Effluent by a Polyurethane Foam Immobilized Microbial Consortium in an Upflow Column Bioreactor

Lade

Govindwar

Paul

2015

IJERPH

120

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“…The band in region at 1384-1380 cm −1 corresponds to C-H bending and stretching of -CH3 of the dye molecules (Du et al 2012). The band for S = O stretching at 1141 cm −1 and vibrations of C-OH bonds at 1049 cm −1 present in the naphthol group was observed (Bedekar et al 2014;Babu et al 2015). All treatments caused a reduction in the intensity of these bands, possibly indicating the breakage of these bonds during the biodegradation process.…”

Section: Ftir Analysis Of Metabolites Formed During Biodegradationmentioning

confidence: 89%

Acid Blue 161: Decolorization and Toxicity Analysis After Microbiological Treatment

Almeida

Corso

2016

Water Air Soil Pollut

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Concern for the incorrect disposal of potentially toxic substances in aquatic environments is growing due to adverse effects caused to the organisms exposed to them. Synthetic azo dyes are part of this group of substances, and increasingly, researchers seek alternatives able to degrade and remove these molecules to prevent their discharge to the environment. Thus, this study sought to examine the dye removal capacity Acid Blue 161 by biosorption and biodegradation from filamentous fungi Aspergillus niger and Aspergillus terreus and perform acute toxicity tests with Lactuca sativa organisms and Artemia salina. The biossorption treatment resulted in 46 % decolorization of the solutions and reducing the toxicity of the means for both organisms tested. While the biodegradation study resulted in 84 % decolorization at the end of treatment. The resulting solution of such treatment did not show toxicity to the larvae of A. salina and the L. sativa seeds were increased by 40 % in the inhibition of root growth of seedlings. FTIR studies indicated the presence of amines in the middle, which justifies the increase in toxicity to seedlings, since these compounds are potentially toxic to a variety of organisms.

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“…6). Karim et al 67 also suggested a decrease in genotoxicity induced by TE on exposure to the fungal consortium-GR. Genotoxicity of the TE also was removed by Lysinibacillus sp.…”

Section: Phytotoxicity Assaymentioning

confidence: 98%

Immobilized fungal consortium‐GR: a novel textile effluent treatment alternative for removal of azo dyes and other pollutants

Sen¹,

Das

Rajhans

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: Cleaning up the environment by the elimination of harmful contaminants from textile effluents (TE) is a critical and challenging crisis that requires long-term appropriate solutions. In this work, a fungal consortium-GR containing two fungi Geotrichum candidum F4 and Rhodotorula glutinis F7, in the ratio 1:1, is demonstrated to treat the organic contaminants in TEs. RESULTS:The immobilized consortium-GR in coconut fibre is 24% more efficient at treating TE than free consortium-GR, showing a maximum decolorization of 88.4% in 6 h immersion, at optimal conditions of pH 5.5, temperature 35°C, inoculum size 5% and fibre quantity 2.5 g L −1 . Biodegradation was confirmed by using UV-visible spectrophotometry, high-performance liquid chromatography and Fourier transform infrared spectroscopy, and the degradation pathway of methyl orange was confirmed by gas chromatography-mass spectroscopy study. The novel immobilized consortium-GR in the bioreactor was assessed by the reduction of toxic parameters in 6 h: colour by 70%, total dissolved solids by 62%, total suspended solids by 81%, biological oxygen demand by 51%, chemical oxygen demand by 58%, chloride by 78%, ammonia by 64%, sulfate by 55%, lead by 12.5% and chromium by 75%. During this process of bioconversion, maximum laccase activity of 3.25 U L −1 was observed in 6 h by immobilized consortium-GR. Phytotoxicity and genotoxicity studies revealed the detoxification of TE. CONCLUSION: Through the continuous reuse of treated water in subsequent dyeings, the proposed TE treatment process represented a 92.86% reduction in water use and a total cost reduction of 22.47%.This study is a step towards upcoming onsite, field and short-term applications of consortium-GR for the management of TE.

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Development of low cost upflow column bioreactor for degradation and detoxification of Blue HERD and textile effluent by Lysinibacillus sp. RGS immobilized on Loofa

Cited by 28 publications

References 31 publications

Mineralization and Detoxification of the Carcinogenic Azo Dye Congo Red and Real Textile Effluent by a Polyurethane Foam Immobilized Microbial Consortium in an Upflow Column Bioreactor

Mineralization and Detoxification of the Carcinogenic Azo Dye Congo Red and Real Textile Effluent by a Polyurethane Foam Immobilized Microbial Consortium in an Upflow Column Bioreactor

Acid Blue 161: Decolorization and Toxicity Analysis After Microbiological Treatment

Immobilized fungal consortium‐GR: a novel textile effluent treatment alternative for removal of azo dyes and other pollutants

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