Study on a novel immobilized microbe pellets constructed with Alcaligenes sp. R3 and its ability to remove tetracycline

Liu, Zhuangzhuang; Yang, Yabo; Liu, Gang; Fang, Jun

doi:10.1016/j.jece.2023.109378

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…TC is an amphoteric molecular, and its existing form depends on the environmental pH: TCH 3+ (pH < 3.30), neutral or amphoteric ions (3.30 < pH < 7.68), TCH − (7.68 < pH < 9.68) and TC 2− (pH > 9.68) [38]. The chemical structure of tetracycline is shown in Figure S3 [39]. Biochar derived from cassava stalk, rubber wood and sugarcane bagasse had similar functional groups in our study, and the proposed chemical structure of these biochar is shown in Figure S2 [31]: -OH of alcohol or phenolic [18], C-H of alkane [32], C=O of ester or aldehyde [33], C=C of aromatic structure [34] and C-O-C of ether [35] (Figure 3d).…”

Section: Environmental Ph Affected the Removal Of Tcmentioning

confidence: 99%

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Removal Performance of KOH-Modified Biochar from Tropical Biomass on Tetracycline and Cr(VI)

et al. 2023

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Biochar can be used to address the excessive use of tetracycline and micronutrient chromium (Cr) in wastewater that potentially threatens human health. However, there is little information about how the biochar, made from different tropical biomass, facilitates tetracycline and hexavalent chromium (Cr(VI)) removal from aqueous solution. In this study, biochar was prepared from cassava stalk, rubber wood and sugarcane bagasse, then further modified with KOH to remove tetracycline and Cr(VI). Results showed that pore characteristics and redox capacity of biochar were improved after modification. KOH-modified rubber wood biochar had the highest removal of tetracycline and Cr(VI), 1.85 times and 6 times higher than unmodified biochar. Tetracycline and Cr(VI) can be removed by electrostatic adsorption, reduction reaction, π–π stacking interaction, hydrogen bonding, pore filling effect and surface complexation. These observations will improve the understanding of the simultaneous removal of tetracycline and anionic heavy metals from wastewater.

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Section: Environmental Ph Affected the Removal Of Tcmentioning

confidence: 99%

Section: Environmental Ph Affected the Removal Of Tcmentioning

confidence: 99%

Removal Performance of KOH-Modified Biochar from Tropical Biomass on Tetracycline and Cr(VI)

et al. 2023

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“…SQY5 and Alcaligenes sp. R3 [47][48][49][50][51]. The biodegradation of tetracycline is achieved by complicated metabolic reactions catalysed by enzymes.…”

Section: Pathway and Enzyme-encoding Genes Of Tetracycline Biodegrada...mentioning

confidence: 99%

Key genes of electron transfer, the nitrogen cycle and tetracycline removal in bioelectrochemical systems

Zhao,

Qin,

Jing

et al. 2023

Biotechnol Biofuels

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Background Soil microbial fuel cells (MFCs) can remove antibiotics and antibiotic resistance genes (ARGs) simultaneously, but their removal mechanism is unclear. In this study, metagenomic analysis was employed to reveal the functional genes involved in degradation, electron transfer and the nitrogen cycle in the soil MFC. Results The results showed that the soil MFC effectively removed tetracycline in the overlapping area of the cathode and anode, which was 64% higher than that of the control. The ARGs abundance increased by 14% after tetracycline was added (54% of the amplified ARGs belonged to efflux pump genes), while the abundance decreased by 17% in the soil MFC. Five potential degraders of tetracycline were identified, especially the species Phenylobacterium zucineum, which could secrete the 4-hydroxyacetophenone monooxygenase encoded by EC 1.14.13.84 to catalyse deacylation or decarboxylation. Bacillus, Geobacter, Anaerolinea, Gemmatirosa kalamazoonesis and Steroidobacter denitrificans since ubiquinone reductase (encoded by EC 1.6.5.3), succinate dehydrogenase (EC 1.3.5.1), Coenzyme Q-cytochrome c reductase (EC 1.10.2.2), cytochrome-c oxidase (EC 1.9.3.1) and electron transfer flavoprotein-ubiquinone oxidoreductase (EC 1.5.5.1) served as complexes I, II, III, IV and ubiquinone, respectively, to accelerate electron transfer. Additionally, nitrogen metabolism-related gene abundance increased by 16% to support the microbial efficacy in the soil MFC, and especially EC 1.7.5.1, and coding the mutual conversion between nitrite and nitrate was obviously improved. Conclusions The soil MFC promoted functional bacterial growth, increased functional gene abundance (including nitrogen cycling, electron transfer, and biodegradation), and facilitated antibiotic and ARG removal. Therefore, soil MFCs have expansive prospects in the remediation of antibiotic-contaminated soil. This study provides insight into the biodegradation mechanism at the gene level in soil bioelectrochemical remediation.

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Adsorption characterization of tetracycline antibiotics on alkali-functionalized rice husk biochar and its evaluation on phytotoxicity to seed germination

Wang,

Chen,

et al. 2023

Environ Sci Pollut Res

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Study on a novel immobilized microbe pellets constructed with Alcaligenes sp. R3 and its ability to remove tetracycline

Cited by 8 publications

References 38 publications

Removal Performance of KOH-Modified Biochar from Tropical Biomass on Tetracycline and Cr(VI)

Removal Performance of KOH-Modified Biochar from Tropical Biomass on Tetracycline and Cr(VI)

Key genes of electron transfer, the nitrogen cycle and tetracycline removal in bioelectrochemical systems

Adsorption characterization of tetracycline antibiotics on alkali-functionalized rice husk biochar and its evaluation on phytotoxicity to seed germination

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