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Intensified biodegradation of Congo red dye by mixed culture in a sequential bioreactor: Kinetics and phytotoxicity studies

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Title Intensified biodegradation of Congo red dye by mixed culture in a sequential bioreactor: Kinetics and phytotoxicity studies
 
Creator Sonwani, Ravi Kumar
Patel, Diwakar
Singh, Alankriti
Singh, Ram Sharan
Rai, Birendra Nath
 
Subject Aquatic pollution
Azo dye
Chemical oxygen demand
Chickpea
Cicer arietinum
Dye removal efficiency
Sequential bioreactor
Textile industry
Wastewater
 
Description 739-745
Although textile industries lead the economic sector in several countries, the pollution that they cause, particularly to
water bodies, is a serious environmental concern. Dyes and their metabolites are harmful to human and aquatic life due to
their toxic, mutagenic, and carcinogenic potential. In this study, we have made an effort to treat the complex Congo red
(CR) dye-containing wastewater in an anaerobic-aerobic sequential bioreactor. The impact of CR dye concentration
(20-100 mg/L) on the performance of sequential bioreactor was examined. The CR dye removal efficiencies (REs) of 97,
88.1, 75.9, 68.7, and 42.56% were obtained at 20, 40, 60, 80 and 100 mg/L of CR dye, respectively. Similarly, the overall
Chemical oxygen demand (COD) RE of 90% was also obtained. It was found that the CR dye and COD REs were high at
low concentrations of CR dye. The obtained experimental data was fitted with growth and substrate inhibition models.
A phytotoxic study indicated that the Chickpea (Cicer arietinum L.) grown in treated wastewater showed better germination
(93%) than untreated wastewater (66%).
 
Date 2023-09-29T11:43:33Z
2023-09-29T11:43:33Z
2023-09
 
Type Article
 
Identifier 0975-1009 (Online); 0019-5189 (Print)
http://nopr.niscpr.res.in/handle/123456789/62645
https://doi.org/10.56042/ijeb.v61i10.1686
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJEB Vol.61(10) [October 2023]