Selection of potential bacterial strains to develop bacterial consortia for the remediation of e-waste and its in situ implications

Debbarma, Prasenjit; Zaidi, M. G. H.; Kumar, Saurabh; Raghuwanshi, Shikha; Yadav, Amit; Shouche, Yogesh S.; Goel, Reeta

doi:10.1016/j.wasman.2018.08.026

Cited by 12 publications

(11 citation statements)

References 29 publications

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“…The PCR product was purified and sequenced using primers 343R, 704F, 907R, 1028F. Among eight selected e-waste-degrading bacterial strains, strain PE08 T was found to be closely related to Pseudomonas furukawaii KF707 T with similarity of 98.70 % based on full-length the 16S rRNA sequence (MF943158), followed by Pseudomonas aeruginosa DSM 50071 T (98.62 %) and Pseudomonas resinovorans DSM 21078 T (97.93 %) when analysed on the EzBioCloud database [8, 9]. The 16S rRNA gene-based phylogeny showed that P.…”

Section: Full-textmentioning

confidence: 99%

“…All strains were negative for indol production, p-nitrophenyl-d-galactopyranoside hydrolysis, reduction of potassium nitrate and urea hydrolysis. [8,9]. The 16S rRNA gene-based phylogeny showed that P. furukawaii KF707 T [6] and P. resinovorans DSM 21078 T [10] formed a monophyletic clade with strain PE08 T keeping P. aeruginosa DSM 50071 T in a separate outer clade.…”

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confidence: 99%

“…ContinuedLuria broth (LB) after 5 days of incubation at 4, 10, 15, 20, 25, 30, 35 and 40 °C. The pH range for growth was determined at pH 4-12 with increments of 1 pH unit over 5 days with different buffer systems: acetate (pH 4-5), phosphate (pH 6-8) and glycine-sodium hydroxide (pH[9][10][11][12]…”

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Pseudomonas lalkuanensis sp. nov., isolated from a bacterial consortia of contaminated soil enriched for the remediation of e-waste

Thorat

Kirdat

Tiwarekar

et al. 2020

International Journal of Systematic and Evolutionary Microbiology

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A novel e-waste-degrading strain, PE08T, was isolated from contaminated soil collected from a paper mill yard in Lalkuan, Uttarakhand, India. Strain PE08T was Gram-stain-negative, rod-shaped, aerobic, oxidase-positive and catalase-positive. Optimum growth was observed at 30 °C (range, 5–40 °C), with 1–2 % NaCl (range, 0–3 %) and at pH 7 (range 6–11). The phylogeny based on 16S rRNA gene sequences delineated strain PE08T to the genus Pseudomonas and showed highest sequence similarity to Pseudomonas furukawaii KF707T (98.70 %), followed by Pseudomonas aeruginosa DSM 50071T (98.62 %) and Pseudomonas resinovorans DSM 21078T (97.93 %). The genome of strain PE08T was sequenced and had one scaffold of 6056953 bp, 99.84 % completeness and 182× coverage were obtained. The G+C content in the genome was 64.24 mol%. The DNA–DNA hybridization and average nucleotide identity values between strain PE08T and its closely related type strain, P. resinovorans DSM 21078T were below 34.8 % and 87.96 %, respectively. The phylogenetic analysis based on whole-genome sequence and concatenated GyrB and RpoB proteins revealed that strain PE08T forms a district clade in the family Pseudomonadaceae . The predominant fatty acids were summed feature 8 (C18 : 1ω7c and/or C18 :1 ω6c), summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c), C16 : 0 and C12 : 0. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The phenotypic, chemotaxonomic and genetic analysis, including overall genome relatedness index values, indicated that strain PE08T represents a novel species of the genus Pseudomonas , for which the name Pseudomonas lalkuanensis sp. nov. is proposed. The type strain is PE08T (=MCC 3792=KCTC 72454=CCUG 73691).

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Pseudomonas lalkuanensis sp. nov., isolated from a bacterial consortia of contaminated soil enriched for the remediation of e-waste

Thorat

Kirdat

Tiwarekar

et al. 2020

International Journal of Systematic and Evolutionary Microbiology

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“…Debbarma et al isolated some indigenous microbial strains possessing the potential to degrade e-waste plastics. As they observed, the microbial consortium showed accelerated growth in the presence of e-waste ( Debbarma et al, 2018 ). Meanwhile, the bacterial community of tailing soil decreased during the process, except for the density of 15 g l −1 , in which the bacterial population of tailing soil showed an increasing trend within the first week of bioleaching and then started to decrease ( Figure 6 ).…”

Section: Resultsmentioning

confidence: 79%

Remediation of metals and plastic from e-waste by iron mine indigenous acidophilic bacteria

et al. 2022

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The growing consumption of electrical and electronic equipment leads to high amounts of electronic waste (e-waste), which is now considered the fastest-growing waste stream at the national and international levels. As well as being a potential secondary resource due to its precious metals content, e-waste also contains strategic metals and plastics. For instance, mobile phones have about 25–55% plastic substances. A few studies have been performed to investigate the potential of indigenous bacteria in metals’ bioleaching from the polluted environment. Heterotrophic bioleaching potential in acidic conditions had been preliminarily investigated. Two soil types of iron ore were considered the source of indigenous bacteria. Despite the acidophilic nature of the bacterial consortium, they continued their leaching activity regardless of alkaline conditions. Maximum biorecovery rate related to copper (4%) responding to the main soil, owing to the higher copper content of mobile phone waste. Chromium had the least recovery rate (⩽0.002%). Overall, the maximum metal recovery rate was 4.7%, achieved by tailing heterotrophs at an e-waste loading of 10 g l−1. Statistical analysis had shown that there was no significant difference between the metal recovery rates and soil type or even the solid-liquid ratio ( p > 0.05). Although acidophilic indigenous heterotrophs could not be an appropriate alternative for a large amount of metal recovery process, they might have considerable potential in the bioremediation of e-waste plastic fractions and metals in low concentrations simultaneously.

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“…The first stage is the evaporation stage of water, which is 23–90 °C. At this stage, the weight loss of the sample is very small, and may be caused by the loss of moisture in the sample (Debbarma et al, 2018). The second stage is between 90 °C and 175 °C, which is the transition phase of the preheating solution.…”

Section: Results and Analysismentioning

confidence: 99%

Pyrolysis molecule of Torreya grandis bark for potential biomedicine

Chen

Yue

Yang

et al. 2019

Saudi Journal of Biological Sciences

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Torreya grandis is a unique tree species in China. Although full use has been made of the timber, the processing and utilization of the bark has not been effective. In order to explore a new way to utilize the bark of Torreya grandis , a powder of T. grandis bark was prepared and analyzed qualitatively and quantitatively. Differential scanning calorimetry (TG) and pyrolysis gas chromatography-mass spectrometry (PY-GC/MS) revealed many bioactive components in the bark of T. grandis, such as acetic acid, 2-methoxy-4-vinyl phenol, D-mannose, and furfural. These substances have potential broad applications in the chemical industry, biomedicine, and food additives. The chemical constituents of the bark of T. grandis suggest a theoretical basis for the future development and utilization of the bark of T. grandis .

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Selection of potential bacterial strains to develop bacterial consortia for the remediation of e-waste and its in situ implications

Cited by 12 publications

References 29 publications

Pseudomonas lalkuanensis sp. nov., isolated from a bacterial consortia of contaminated soil enriched for the remediation of e-waste

Pseudomonas lalkuanensis sp. nov., isolated from a bacterial consortia of contaminated soil enriched for the remediation of e-waste

Remediation of metals and plastic from e-waste by iron mine indigenous acidophilic bacteria

Pyrolysis molecule of Torreya grandis bark for potential biomedicine

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