A high-efficiency Klebsiella variicola H12-CMC-FeS@biochar for chromium removal from aqueous solution

Yu, Ruilian; Man, Meilian; Yu, Zhaojing; Wu, Xueling; Shen, Li; Liu, Yuandong; Li, Jiaokun; Xia, Mingchen; Zeng, Weimin

doi:10.1038/s41598-021-85975-z

Cited by 13 publications

(4 citation statements)

References 58 publications

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“…In contrast, raw biochar contained the least amount of carbon. Literature reported the correlation of C content with the dye sequestration capacity of the carbonaceous particles (Yu et al, 2021) and found better efficiency with high C content (Xiong et al, 2013). The higher MO sorption by the activated biochar prepared at 500°C in our study is compatible with the remarks suggested by (Xiong et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Phosphoric acid surface modified Moringa oleifera leaves biochar for the sequestration of methyl orange from aqueous solution: Characterizations, isotherm, and kinetics analysis

Islam

Roy

Afrose

2022

Remediation Journal

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Biochar is a promising engineering material to sequestrate organic pollutants from wastewater. In the current study, several surface-modified Moringa (M.) oleifera leaf biochars were prepared and utilized for the sorption of methyl orange (MO) dye from an aqueous solution. Raw biochar was produced by the carbonization of M. oleifera leaves at 350°C in a muffle furnace for 2 h. The surface-modified M. oleifera biochars were prepared at 400°C, 500°C, and 600°C using phosphoric acid (H 3 PO 4 ) at different combinations to improve the biochar pore structure, surface functional groups, and biochar stability. The highest surface area (267.15 ± 42.40 m 2 /g) of the modified biochar was achieved at 500°C with H 3 PO 4 to raw biochar ratio of 1.5. Surface morphological results revealed the formation of pores, troughs, and channels with the increasing activation temperature. The carbon (C) content (wt%) was maximum (79.61%) for activated biochar at 500°C. The presence of enhanced functional groups, e.g., hydroxyl, aliphatic carbon-hydrogen, carbonyl, ester, and phenol structures in surface-modified biochars was observed from FT-IR results. The Langmuir isotherm model was fitted to better describe the adsorption phenomenon for both surface-modified biochars and raw biochar compared to the Freundlich isotherm model. The highest adsorption capacity was

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Section: Resultsmentioning

confidence: 99%

Phosphoric acid surface modified Moringa oleifera leaves biochar for the sequestration of methyl orange from aqueous solution: Characterizations, isotherm, and kinetics analysis

Islam

Roy

Afrose

2022

Remediation Journal

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“…Promote growth on plants (Gupta et al, 2019). At present, Klebsiella variicola H12-CM-Fes@ (Yu et al, 2021a) and microbacterium Testaceum B-HS2 (Amina et al, 2019), Sporosarcina Saromensis W5 (Huang et al, 2021) and Bacillus sp. CRB-B1 (Tan et al, 2020) have been identified with high efficiency in removing chromium.…”

Section: Inductionmentioning

confidence: 99%

Effects of Cr stress on bacterial community structure and diversity in rhizosphere soils of Iris pseudacorus

Wei¹,

Zhu²,

Yang³

et al. 2022

Preprint

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Rhizosphere microorganisms play an important role in improving soil microenvironment, which contributes to plant growth under heavy metal stress. However, the effect of chromium (Cr) on plant rhizosphere bacterial community is still unknown. In this paper, sole-cultivated pattern, two-cultivated pattern and three-cultivated pattern, combined with 16S rRNA high-throughput sequencing technology, the effects of Cr stress on bacterial community structure and diversity in rhizosphere soil of Iris Pseudacorus were analyzed. The results showed that under Cr stress, I. Pseudacorus showed good tolerance and enrichment. However, under Cr stress, the Alpha diversity indices (Shannon, Chao and Sobs) of rhizosphere bacterial community decreased by 9.1%, 30.3% and 28.0% on average, respectively. The change of bacterial community was 22.6% due to Cr stress, and the common species of bacterial community decreased by 4.2%. Proteobacteria, Actinobacteria, Acidobacteria, Firmicutes and Gemmatimonadetes accounted for more than 78.2% of the total sequence. With the increase of plant diversity, Bacteroides and Pseudomonas appeared successively, and the abundance of the dominant species increased obviously. Through the symbiotic network diagram, it was found that the synergistic effect between dominant species in two-cultivated pattern was significantly enhanced, and the soil microenvironment was significantly improved. In conclusion, the results of this study will provide a reference for understanding the response of rhizosphere bacterial community to heavy metal Cr and the interaction between wetland plants and rhizosphere bacteria during wetland phytoremediation.

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“…Then they were divided into two parts. In the rst part, the samples were xed, dehydrated, and dried by glutaraldehyde, and the microstructure and element distribution of the mycelia were characterized via SEM and energy dispersive spectroscopy (EDS) (Yu et al 2021). After freeze-drying, the other samples were used to analyze the element content of thalli.…”

Section: Analysis Of the Nuclide Enrichment Characteristics Of The Fungimentioning

confidence: 99%

Bioconcentration and Tolerance Mechanism of a Trichoderma Strain Exposed to Cobalt, Strontium, and Uranium

Li¹,

Lai²,

Li³

et al. 2022

Preprint

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Microbial enrichment of radionuclides has the advantages of low cost, simple operation, and no secondary pollution, but the enrichment abilities of radionuclides differ. In this study, a Trichoderma fungus with high tolerance to a variety of radionuclides [i.e., cobalt (Co), strontium (Sr), and uranium (U)] was screened from radioactive contaminated soil by analyzing the enrichment characteristics. Combined with non-targeted metabolomics technology, the physiological response mechanism of Trichoderma fungus metabolism to cobalt, strontium and uranium exposure was revealed from the metabolic level. The results showed that the Trichoderma grew well under multi-nuclides exposure, and the Co, Sr, and U accumulated on the mycelium surface of the strain. Their enrichment reached 36.4–96.6 mg/kg, 76.7–239.7 mg/kg, and 268.5–667.0 mg/kg, respectively. With the increase in the multi-nuclides exposure concentration, the element metabolism of the strain changed, and U, Co, and Sr showed a cooperative absorption relationship. The gas chromatograph-mass spectrometer (GC-MS) non-targeted metabolome analysis showed that the amino acid metabolic pathway and the carbohydrate pathway of the strain changed when the Co, Sr, and U concentrations were 100 mg/L. The results showed that Trichoderma has strong enrichment potential and tolerance to Co, Sr, and U and can be used for radionuclide removal.

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A high-efficiency Klebsiella variicola H12-CMC-FeS@biochar for chromium removal from aqueous solution

Cited by 13 publications

References 58 publications

Phosphoric acid surface modified Moringa oleifera leaves biochar for the sequestration of methyl orange from aqueous solution: Characterizations, isotherm, and kinetics analysis

Phosphoric acid surface modified Moringa oleifera leaves biochar for the sequestration of methyl orange from aqueous solution: Characterizations, isotherm, and kinetics analysis

Effects of Cr stress on bacterial community structure and diversity in rhizosphere soils of Iris pseudacorus

Bioconcentration and Tolerance Mechanism of a Trichoderma Strain Exposed to Cobalt, Strontium, and Uranium

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