Advertisement

Topics

Kinetic assessment of antibiotic resistant bacteria inactivation by solar photo-Fenton in batch and continuous flow mode for wastewater reuse.

08:00 EDT 7th May 2019 | BioPortfolio

Summary of "Kinetic assessment of antibiotic resistant bacteria inactivation by solar photo-Fenton in batch and continuous flow mode for wastewater reuse."

The presence of antibiotic resistant bacteria in municipal wastewater treatment plants represents a real risk to human health. For the first time, this paper shows that the inactivation rate of cefotaxime resistant bacteria is the same as total bacteria when secondary effluents are treated by the solar photo-Fenton process. To obtain this result, an exhaustive and comparative kinetic study on the inactivation of both total and cefotaxime resistant bacteria (Total coliform, Escherichia coli and Enterococcus sp) was carried out, taking into account the effects of the main operation conditions, such as solar irradiance and iron concentration, and operation mode (batch and continuous). In all the operation conditions studied, no significant differences were found between the first order inactivation rate constants, k, of total and cefotaxime resistant bacteria. Additionally, k increased with solar irradiance and iron concentration. As for the effect of the operation mode, the main finding of this work is much quicker inactivation in continuous flow mode than in batch mode, pointing out its potential application at large scale. The best continuous operation condition to inactivate the bacteria to the detection limit (1 CFU mL), was at 22.4 min of hydraulic residence time with 5 mg Fe L and 30 mg HO·L. This treatment time is approximately a third of that reported in batch mode. The efficiency, in terms of figure of merits, of the continuous flow operation was 2.7 m of solar collector area to reduce one log of E. coli concentration per m of treated water and per hour, in comparison with 2137 m calculated for batch operation under the same solar UVA irradiance, 30 W m. This paper encourages research into continuous solar disinfection processes due to its enhanced efficiency with regard to the commonly used batch wise operation and shows that efficient removal of total bacteria ensures the removal of antibiotic resistant bacteria.

Affiliation

Journal Details

This article was published in the following journal.

Name: Water research
ISSN: 1879-2448
Pages: 184-191

Links

DeepDyve research library

PubMed Articles [15136 Associated PubMed Articles listed on BioPortfolio]

Tertiary treatment of urban wastewater by solar and UV-C driven advanced oxidation with peracetic acid: Effect on contaminants of emerging concern and antibiotic resistance.

Photo-driven advanced oxidation process (AOP) with peracetic acid (PAA) has been poorly investigated in water and wastewater treatment so far. In the present work its possible use as tertiary treatmen...

Treatment of antibiotic-resistant bacteria by encapsulation of ZnO nanoparticles in an alginate biopolymer: Insights into treatment mechanisms.

Treating multidrug-resistant bacteria has been a challenging task, although the bacteria have been reported as a trace contaminant present in tap water. Given emerging issues on antibiotic-resistant b...

Effects of UV disinfection on phenotypes and genotypes of antibiotic-resistant bacteria in secondary effluent from a municipal wastewater treatment plant.

To elucidate the effects of UV disinfection on antibiotic resistance in biologically-treated wastewater, we investigated the antibiotic resistance profiles, species of cultivable heterotrophic bacteri...

Porphyrinoid photosensitizers mediated photodynamic inactivation against bacteria.

The multi-drug resistant bacteria have become a serious problem complicating therapies to such a degree that often the term "post-antibiotic era" is applied to describe the situation. The infections w...

Photo-inactivation of Neisseria gonorrhoeae: A paradigm changing approach for combating antibiotic-resistant gonococcal infection.

Antimicrobial resistance in Neisseria gonorrhoeae is a major issue of public health, and there is a critical need for the development of new anti-gonococcal strategies. In this study, we investigated ...

Clinical Trials [6200 Associated Clinical Trials listed on BioPortfolio]

Antibiotic-resistant Bacterial Infection of Hepatic Patients

the investigators want to identify the microbial profile, antibiotic resistant bacteria in hepatic patients with infections in Liver ICU, and explore risk factors and outcomes in those pat...

Effects of MAC Preventive Therapy on Disease-Causing Bacteria in HIV-Infected Patients: A Substudy of CPCRA 048

Some people who have taken azithromycin to prevent MAC (Mycobacterium avium Complex, a bacterial infection common in HIV-infected persons) have been found to carry antibiotic-resistant bac...

Study of Accuracy of New Diagnostic Technology to Determine Guide Rapid Antibiotic Treatment for Serious Infections

Military service members and the U.S. veteran population face a growing and serious health threat: widespread antibiotic resistance resulting from resistant bacteria and a dwindling pipe-l...

Feasibility Studies to Inform Novel Proposals to Avert Community-Based Antimicrobial Resistance Spread

There are many bacteria that naturally live in our gut and are essential for good health. These bacteria have a variety of helpful functions, such as aiding digestion, synthesizing vitamin...

Incidence of Antibiotic Resistant E.Coli in Patients Undergoing Repeat Prostate Biopsy

The purpose of this study is to discover how often certain bacteria are found in the rectum at the time of a prostate needle biopsy to diagnose prostate cancer. Certain bacteria are of imp...

Medical and Biotech [MESH] Definitions

Strains of the genus Enterococcus that are resistant to the antibiotic VANCOMYCIN. The enterococci become resistant by acquiring plasmids carrying genes for VANCOMYCIN RESISTANCE.

An antibiotic similar to FLUCLOXACILLIN used in resistant staphylococci infections.

A semisynthetic cephamycin antibiotic resistant to beta-lactamase.

Bacteria resistant to high temperatures, as in PASTEURIZATION.

A beta-lactamase inhibitor with very weak antibacterial action. The compound prevents antibiotic destruction of beta-lactam antibiotics by inhibiting beta-lactamases, thus extending their spectrum activity. Combinations of sulbactam with beta-lactam antibiotics have been used successfully for the therapy of infections caused by organisms resistant to the antibiotic alone.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article