Development of artificial consortia of microalgae and bacteria for efficient biodegradation and detoxification of lindane

Kumari, Moni; Ghosh, Pooja; Swati, Swati; Thakur, Indu Shekhar

doi:10.1016/j.biteb.2020.100415

Cited by 14 publications

(2 citation statements)

References 43 publications

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“…42 Reduction in cytotoxicity caused by metabolites has also been reported by Kumari et al, which is also in agreement with our results. 43 DAPI analysis was done for qualitative analysis of the cells. Figure 7b represents the images obtained through fluorescent microscopy when cells were stained using DAPI.…”

Section: Effect On Mammalian Cell Linesmentioning

confidence: 99%

Bioremediation of Imidacloprid in a Stirred Tank Reactor Using Bacterial Consortium: Kinetic Analysis and Toxicity Assessment

Tiwari

Tripathi

Mohan

et al. 2023

Ind. Eng. Chem. Res.

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Imidacloprid is an insecticide of systemic nature that exhibits an adverse impact on several non-target organisms. In the present study, potential bacteria have been isolated and used for biodegradation of imidacloprid in batch studies and stirred tank reactor. The optimum process condition for degradation has been found to be at pH 7, a temperature of 35 °C, and a shaking speed of 150 rpm. Maximum degradation of 78% has been achieved by the bacterial consortium in the batch study, while, in the reactor, it increases to 90%. Kinetics analysis suggests that the Teisser model best fits the experimental data, with a correlation coefficient (R 2) of 0.98. Ecotoxicological assessment using luminescent bacteria reveals 40% and 90% inhibition in luminescence in the case of untreated sample upon exposure for 30 min and 24 h, respectively, while the values obtained in the case of treated samples are 9% and 29%, respectively. Cytotoxicity assessment indicates 60% reduction in cell proliferation in untreated samples and <10% cell proliferation inhibition in treated samples, indicating a considerable decrease in toxicity post-bacterial treatment.

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Section: Effect On Mammalian Cell Linesmentioning

confidence: 99%

Bioremediation of Imidacloprid in a Stirred Tank Reactor Using Bacterial Consortium: Kinetic Analysis and Toxicity Assessment

Tiwari

Tripathi

Mohan

et al. 2023

Ind. Eng. Chem. Res.

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“…Microalgae are the largest group of primary producers in the aqueous environment and play a key role in the ecological cycle [5,6]. They have been considered one of the potential candidates for bioremediation because of their large surface-to-volume ratio, rapid metal uptake, strong reproductive capacity, and costeffectiveness [7,8]. In addition, bacteria have been widely used to clean up pollution owing to their rapid growth [6].…”

mentioning

confidence: 99%

Effects of algal–bacterial ratio on the growth and cadmium accumulation of Chlorella salina–Bacillus subtilis consortia

et al. 2021

J Basic Microbiol

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Algae-bacteria consortia have been proven effective in the removal of metal pollutants, but the effects of algal-bacterial ratio in the metal accumulation and resistance by this symbiotic system have not been systematically investigated. In this study, we set up consortia with various ratios of Chlorella salina-Bacillus subtilis, determined their growth, Cd accumulation, levels of intracellular glutathione (GSH), extracellular polysaccharide, phosphorus (P) in the culture medium, and functional groups of consortia after Cd treatments (0.1, 0.5, 1 mg L −1 ) for 7 days. With the addition of B. subtilis in the C. salina culture, the dry weight and specific growth rate of the consortia significantly increased compared with C. salina alone, reaching 68.33 mg and 0.382 (mg L −1 ) d −1 respectively at the 1:4 algal-bacterial ratio with 1 mg L −1 Cd treatment. Maximum Cd removal (51.66%) was also observed upon the same Cd exposure and algal-bacterial ratio. Cadmium was mostly taken up into cells at 1 mg L −1 Cd whereas its adsorption dominated the accumulation when Cd was 0.1 and 0.5 mg L −1 . The amounts of extracellular polysaccharides, GSH, and P of the symbiotic system were also increased by the bacterial addition. Besides, Fouriertransform infrared (FTIR) spectroscopy analysis showed that functional groups like N-H, O-H, and P-O-C were involved in the Cd complexation. Taken together, a higher bacterial ratio promoted the Cd accumulation and detoxification by the C. salina-B. subtilis consortia through intra-and extracellular processes. K E Y W O R D S accumulation, algae-bacteria consortia, cadmium, detoxification 1 | INTRODUCTION Cadmium (Cd) is a toxic heavy metal and has been considered as a human carcinogen by the US Department of Health and Human Services [1]. It causes severe consequences in human health such as pathological changes in the liver, kidney, and other organs, neuralgia, osteoporosis, bone pain, and severe bone deformity [2,3]. Recently, Cd bioremediation has been extensively investigated due to its advantages such as cost-effectiveness

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Biodegradation of Environmental Pollutants by Autochthonous Microorganisms – A Precious Service for the Restoration of Impacted Ecosystems

Fernandes

Alexandrino

Mucha

et al. 2022

Assessing the Microbiological Health of Ecosystems

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Development of artificial consortia of microalgae and bacteria for efficient biodegradation and detoxification of lindane

Cited by 14 publications

References 43 publications

Bioremediation of Imidacloprid in a Stirred Tank Reactor Using Bacterial Consortium: Kinetic Analysis and Toxicity Assessment

Bioremediation of Imidacloprid in a Stirred Tank Reactor Using Bacterial Consortium: Kinetic Analysis and Toxicity Assessment

Effects of algal–bacterial ratio on the growth and cadmium accumulation of Chlorella salina–Bacillus subtilis consortia

Biodegradation of Environmental Pollutants by Autochthonous Microorganisms – A Precious Service for the Restoration of Impacted Ecosystems

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