Anaerobic biodegradation of phenol in wastewater treatment: achievements and limits

Tomei, M. Concetta; Angelucci, Domenica Mosca; Clagnan, Elisa; Brusetti, Lorenzo

doi:10.1007/s00253-021-11182-5

Cited by 59 publications

(15 citation statements)

References 173 publications

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“…The biodegradation of phenol by microorganisms can occur in aerobic and anaerobic conditions (Gao et al, 2010;Tomei et al, 2021). Activated sludge is at present widely used as a type of aeration-based wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Phenol Biodegradation in Antibiotic and Heavy Metal Resistant Acinetobacter lwoffii NL1

Qiu

Yang

et al. 2021

Front. Microbiol.

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Phenol is a common environmental contaminant. The purpose of this study was to isolate phenol-degrading microorganisms from wastewater in the sections of the Chinese Medicine Manufactory. The phenol-degrading Acinetobacter lwoffii NL1 was identified based on a combination of biochemical characteristics and 16S rRNA genes. To analyze the molecular mechanism, the whole genome of A. lwoffii NL1 was sequenced, yielding 3499 genes on one circular chromosome and three plasmids. Enzyme activity analysis showed that A. lwoffii NL1 degraded phenol via the ortho-cleavage rather than the meta-cleavage pathway. Key genes encoding phenol hydroxylase and catechol 1,2-dioxygenase were located on a megaplasmid (pNL1) and were found to be separated by mobile genetic elements; their function was validated by heterologous expression in Escherichia coli and quantitative real-time PCR. A. lwoffii NL1 could degrade 0.5 g/L phenol within 12 h and tolerate a maximum of 1.1 g/L phenol, and showed resistance against multiple antibiotics and heavy metal ions. Overall, this study shows that A. lwoffii NL1 can be potentially used for efficient phenol degradation in heavy metal wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Analysis of Phenol Biodegradation in Antibiotic and Heavy Metal Resistant Acinetobacter lwoffii NL1

Qiu

Yang

et al. 2021

Front. Microbiol.

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“…According to the international regulatory agencies of the World Health Organization and EPA, the estimated value of phenol >1 ppm is carcinogenic and non-acceptable in water resources for inhabitants (Zarin et al, 2018). Due to its wide use and hazardous consequences, the removal of phenol from wastewater attains considerable interest among researchers by different conventional and advanced methods, that is, including adsorption/biosorption (Francis et al, 2020), biological degradation (Tomei et al, 2021), electrochemical oxidation (Yavuz and Koparal, 2006), solvent extraction (Liu et al, 2013), membrane filtration (Li et al, 2010), and photocatalytic degradation (Mohamed et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Application of Ag-Biochar Composite for Sono-Adsorption of Phenol

Khan

Siddique

Mirza

et al. 2022

Front. Environ. Sci.

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The silver-embedded wheat straw biochar (Ag–WBC) composite was tailored effectively via the green synthetic route and was used as a nano-adsorbent for the removal of phenol by using adsorption and sono-adsorption processes. Ligustrum lucidum leaf extract was employed as a reducer to prepare silver nanoparticles, and biochar was synthesized from wheat straw via pyrolysis at 450–500°C. The synthesized biochar and Ag–WBC were characterized by using UV–Vis, SEM, EDX, and FTIR. The study confirms the ability of plant leaf extract of L. lucidum to synthesize AgNPs and Ag–WBC composites for the first time. UV–vis spectroscopic analysis confirms the formation of AgNPs and Ag–WBC composites (400–440 nm). SEM results showed that the size of the Ag–WBC composite is in the range of 80–100 nm. The elemental profile of the synthesized Ag–WBC composite shows a higher count at 3 kev due to silver. FTIR analysis revealed the presence of various functional groups involved in reducing Ag metal ions into Ag nanoparticles onto the surface of the composite. Batch experiments executed adsorption and sono-adsorption studies on WBC and Ag–WBC composites, and the results revealed that under optimum conditions, that is, pH= 3, adsorbate concentration= 10 mg L−1, adsorbents dosage= 0.05 g, time= 90 min, and US power = 80 W, the phenol removal efficiencies onto Ag–WBC composite were 78% using sono-adsorption compared to the non-sonicated adsorption. Langmuir and Freundlich isotherm models for fitting the experimental equilibrium data were studied, and the Langmuir model was chosen as an efficient model for the sono-adsorption process. The feasibility of the sono-adsorption process was also evaluated by calculating kinetics.

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“…As an example of the latter, high density formation of non-fermenting bacteria as well as coliforms were observed in cultures of the aquatic plant Lemna minor exposed to different levels of bisphenol A while colonies of the plant ceased to grow, as a sign of the bacterial capabilities to make efficient catabolic use of phenolic derivates [7]. Several research groups have reported the biodegradation kinetics of phenol and derivates by these species along with the genes encoding for the metabolic pathways partly or completely [8,9]. The use of selected bacterial strains to treat sites contaminated by phenolic compounds is gaining importance as a promising bioremediation tool that could replace other less environmentally friendly methods [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Several research groups have reported the biodegradation kinetics of phenol and derivates by these species along with the genes encoding for the metabolic pathways partly or completely [8,9]. The use of selected bacterial strains to treat sites contaminated by phenolic compounds is gaining importance as a promising bioremediation tool that could replace other less environmentally friendly methods [9,10]. Massive sequencing boosts the accurate selection of specific strains with outstanding biodegradation capabilities, thereby developing successful bioremediation solutions to complex pollution problems.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of a Complex Phenolic Industrial Stream by Bacterial Strains Isolated from Industrial Wastewaters

et al. 2021

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Molecular and metabolomic tools were used to design and understand the biodegradation of phenolic compounds in real industrial streams. Bacterial species were isolated from an industrial wastewater treatment plant of a phenol production factory and identified using molecular techniques. Next, the biodegradation potential of the most promising strains was analyzed in the presence of a phenolic industrial by-product containing phenol, alfa-methylstyrene, acetophenone, 2-cumylphenol, and 4-cumylphenol. A bacterial consortium comprising Pseudomonas and Alcaligenes species was assessed for its ability to degrade phenolic compounds from the phenolic industrial stream (PS). The consortium adapted itself to the increasing levels of phenolic compounds, roughly up to 1750 ppm of PS; thus, becoming resistant to them. In addition, the consortium exhibited the ability to grow in the presence of PS in repeated batch mode processes. Results from untargeted metabolomic analysis of the culture medium in the presence of PS suggested that bacteria transformed the toxic phenolic compounds into less harmful molecules as a survival mechanism. Overall, the study demonstrates the usefulness of massive sequencing and metabolomic tools in constructing bacterial consortia that can efficiently biodegrade complex PS. Furthermore, it improves our understanding of their biodegradation capabilities.

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Anaerobic biodegradation of phenol in wastewater treatment: achievements and limits

Cited by 59 publications

References 173 publications

Analysis of Phenol Biodegradation in Antibiotic and Heavy Metal Resistant Acinetobacter lwoffii NL1

Analysis of Phenol Biodegradation in Antibiotic and Heavy Metal Resistant Acinetobacter lwoffii NL1

Synthesis, Characterization, and Application of Ag-Biochar Composite for Sono-Adsorption of Phenol

Biodegradation of a Complex Phenolic Industrial Stream by Bacterial Strains Isolated from Industrial Wastewaters

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