Topics

Coupling the phenolic oxidation capacities of a bacterial consortium and in situ-generated manganese oxides in a moving bed biofilm reactor (MBBR).

08:00 EDT 5th September 2019 | BioPortfolio

Summary of "Coupling the phenolic oxidation capacities of a bacterial consortium and in situ-generated manganese oxides in a moving bed biofilm reactor (MBBR)."

Phenolic wastewater containing phenol and 4-chlorophenol pose a risk to the environment and to human health. Treating them using chemical-biological coupling method is challenging. In this study, manganese oxidizing bacteria (MnOB) were enriched in moving bed biofilm reactor (MBBR) using synthetic phenol wastewater (800 mg L) to facilitate in situ production of biogenic manganese oxides (BioMnOx) after 90 days of operation. Then, 4-chlorophenol (4-CP) was added to the MBBR to simulate mixed phenolic wastewater. Comparing the MBBR (R1) without feeding Mn(II) and the MBBR with BioMnOx (R2) production, R2 exhibited robust phenol and 4-CP removal performance. 16S rRNA gene sequencing was employed to determine the microbial community. Subsequently, a batch experiment demonstrated that partly purified BioMnOx does not exhibits a capacity for phenol removal, but can efficiently remove 4-CP. Interestingly, 5-chloro-2-hydroxymuconic semialdehyde was found in the products of 4-CP degradation, which was the unique product of 4-CP degradation by catechol 2,3-dioxygenase (C23O). In both reactors, only catechol 1,2-dioxygenase (C12O) activity from microbes can be detected, indicating that the existence of BioMnOx provide an alternative pathway in addition to microbe driven 4-CP degradation. Overall, MBBR based MnOB enrichment under high phenol concentration was achieved, and 4-CP/phenol removal can be accelerated by in situ-formed BioMnOx. Considering the C23O-like activity of BioMnOx, our results suggest a new coupling strategy that involves nanomaterials and a microbial consortium.

Affiliation

Journal Details

This article was published in the following journal.

Name: Water research
ISSN: 1879-2448
Pages: 115047

Links

DeepDyve research library

PubMed Articles [13382 Associated PubMed Articles listed on BioPortfolio]

Aerobic Oxidation of in Situ Generated Cyanine Dyes Leading to DNA Damage.

DNA damage induced by noncatalytic aerobic oxidation of pyridinocyanine dyes is described. The dyes are generated in situ during spontaneous oxidations of tetrakis- and bis( N-methylpyridin-4-ium)alka...

Degradation of Bisphenol S by a Bacterial Consortium Enriched from River Sediments.

The widespread use of bisphenol S (BPS) as a bisphenol A substitute increases its potential of release into the aquatic environments. However, the degradation of BPS in aquatic systems is largely un...

Positive impact of biochar alone and combined with bacterial consortium amendment on improvement of bacterial community during cow manure composting.

The present work studied to evaluate the effectiveness under the interaction of bacterial consortium and biochar applied to give impetus to bacterial community activities among cow manure composting. ...

Catalytic alkynylation of polyfluoroarenes by amide base generated in situ.

We herein demonstrate that the amide base generated in situ from CsF and N(TMS)3 catalyzes the deprotonative coupling reactions of terminal alkynes with polyfluoroarenes, wherein mono- and dialkynylat...

Evaluation of integrated biochar with bacterial consortium on gaseous emissions mitigation and nutrients sequestration during pig manure composting.

This study focused on evaluate the effectiveness of biochar alone compare integrated with bacterial consortium amendment on the gaseous emissions mitigation as well as carbon and nitrogen sequestratio...

Clinical Trials [2718 Associated Clinical Trials listed on BioPortfolio]

Effect of a Specific Phenolic Compound on Blood Pressure

The study's main objective is to investigate the effects of acute consumption of a preparation containing 100 mg of a specific phenolic compound (patent pending, P201531587) on systolic BP...

Comparison of Biofilm Characteristics Between an in Situ Biofilm Model of Supragingival Plaque and Natural Teeth

The purpose of this study is to determine in situ the bacterial viability, thickness and bacterial diversity of a biofilm formed on different substrates in comparison to a naturally tooth-...

Investigation of Acute Mood and Cognitive Performance Effects of Beverages Containing Phenolics in Healthy Adults

An acute, randomized, placebo controlled, double blinded crossover study in health subjects. Participants will complete 4 intervention arms in random order consisting of a placebo control ...

Oat Phenolics Bioavailability

A diet rich in whole grain is inversely associated with cardiovascular disease risk and this benefit could be partly attributed to the phenolic acid content of whole grains. The exact abso...

Torsionally Adaptive Prosthesis for Individuals With Lower Limb Amputation

When prescribing a prosthetic foot, clinicians face a dizzying array of choices as more than 200 different prosthetic feet are available. While these conventional prosthetic feet primarily...

Medical and Biotech [MESH] Definitions

A condition in which abnormal cells have not spread outside the duct, lobule, or nipple to other tissues of the breast. There are 3 types of breast carcinoma in situ: DUCTAL CARCINOMA IN SITU; LOBULAR CARCINOMA IN SITU; and PAGET DISEASE OF THE NIPPLE

The reaction of two molecular entities via oxidation usually catalyzed by a transition metal compound and involving dioxygen as the oxidant.

Sets of structured vocabularies used for describing and categorizing genes, and gene products by their molecular function, involvement in biological processes, and cellular location. These vocabularies and their associations to genes and gene products (Gene Ontology annotations) are generated and curated by the Gene Ontology Consortium.

A technique that labels specific sequences in whole chromosomes by in situ DNA chain elongation or PCR (polymerase chain reaction).

The simultaneous identification of all chromosomes from a cell by fluorescence in situ hybridization (IN SITU HYBRIDIZATION, FLUORESCENCE) with chromosome-specific florescent probes that are discerned by their different emission spectra.

Quick Search


DeepDyve research library

Relevant Topic

Biological Therapy
Biological therapy involves the use of living organisms, substances derived from living organisms, or laboratory-produced versions of such substances to treat disease. Some biological therapies for cancer use vaccines or bacteria to stimulate the body&rs...


Searches Linking to this Article