Sludge-based activated carbon catalyzed HO oxidation of reactive azo dyes.

Environ Technol

School of Energy and Environment, Anhui University of Technology, Ma'anshan, People's Republic of China.

Published: February 2021

Sludge-based activated carbon (ZAC) was successfully employed as both adsorbent and catalyst for the oxidation process of reactive yellow 86 (RY86) and reactive black 5 (RB5). Physicochemical properties of the prepared sewage sludge-derived activated carbon were evaluated by N adsorption/desorption, Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The effects of parameters such as initial pH, HO concentrations, ZAC dosages, dye concentrations and temperature on the removal of RY86 and RB5 were investigated. Kinetics results showed that the adsorption rates of RY86 and RB5 by ZAC can be approximated by the pseudo-first order model, and that the oxidation rates by Behnajady-Modirshahla-Ghanbery (BMG) model. Under the optimum conditions in the experiment, i.e. pH = 6.0,  = 303 K, [HO] = 49.5 mmol/L, [ZAC] = 4 g/L, [dyes] = 300 mg/L and  = 150 min, 99%, 88% and 84% of colour, COD and TOC were removed by Fenton -like oxidation for RY86, while for RB5, the three removal rates were 90%, 70% and 62%, respectively, indicating that sludge-based activated carbon can be used as an effective catalyst to oxidation of dyes by HO from coloured wastewater.

Download full-text PDF

Source
http://dx.doi.org/10.1080/09593330.2019.1643409DOI Listing

Publication Analysis

Top Keywords

activated carbon
16
sludge-based activated
12
ry86 rb5
12
catalyst oxidation
8
oxidation
5
carbon
4
carbon catalyzed
4
catalyzed oxidation
4
oxidation reactive
4
reactive azo
4

Similar Publications

White root rot disease caused by Rosellinia necatrix is a growing issue in orchards, and biochar pyrolyzed from the pruned branch residues of fruit trees has potential as a soil amendment agent with a number of benefits, such as long-term carbon sequestration. However, the effects of pruned branch biochar on white root rot disease remain unclear. Therefore, we compared direct antagonism against R.

View Article and Find Full Text PDF

Background: Ethiopia is recognized as a significant center of origin for a wide variety of plant species, particularly those with medicinal properties. A substantial segment of the population across the nation depends on these therapeutic plants for their primary healthcare needs. Many communities, both rural and urban, engage in traditional medicine practices, passing down their knowledge orally from one generation to the next.

View Article and Find Full Text PDF

Investigation of adsorption/desorption properties of vancomycin on ionic liquid modified magnetic activated carbon in aqueous solutions and cytotoxicity evaluation of synthesized nanoparticles.

Environ Sci Pollut Res Int

December 2024

Infectious Diseases and Tropical Medicine Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Zahedan, 98167-43463, Iran.

Effluents containing antibiotics raise concerns due to their potential to promote or sustain bacterial resistance and disrupt essential cycles and processes critical to aquatic ecology, agriculture, and animal farming. Vancomycin is a glycopeptide antibiotic, recognized as the treatment for cases in which other antibiotics are unsuccessful. The efficient elimination of antibiotics plays a crucial role in managing antibiotic pollution.

View Article and Find Full Text PDF

This study reports the development and implementation of a straightforward, rapid, and cost-effective voltammetric technique for piroxicam (PIR) detection at nanomolar concentrations in biological and environmental samples. The method involved the use of a screen-printed electrode (SPE) enhanced with a combination of Printex L6 carbon (PL6C) and polyaniline-based activated carbon (PAC) on a chitosan film crosslinked with epichlorohydrin (CTS:EPH). The detection was carried out using square-wave adsorptive anodic stripping voltammetry (SWAdASV) in a 0.

View Article and Find Full Text PDF

Broth microdilution protocol for determining antimicrobial susceptibility of Legionella pneumophila to clinically relevant antimicrobials.

J Microbiol Methods

December 2024

Medical Microbiology, Division of Infection and Immunity, Cardiff University, Cardiff, UK; UK Health Security Agency, Bacteriology Reference Department, London, UK. Electronic address:

Currently there is no detailed, internationally agreed protocol defined to evaluate antimicrobial susceptibility testing (AST) for Legionella pneumophila (required to establish epidemiological cut-off value or "ECOFF" boundaries); therefore, antimicrobial resistance in these isolates cannot be defined. AST methods utilising media containing activated charcoal as an ingredient, to enable Legionella growth, are unreliable as noted in an internationally authored opinion paper and a new gold standard is required. Here we define a detailed protocol for broth microdilution (BMD) using defined cell culture collection-deposited control reference strains (Philadelphia-1 and Knoxville-1) as well as two accessible reference strains with moderately (lpeAB-carrying) and markedly (23S rRNA mutation-carrying) elevated azithromycin minimum inhibitory concentration (MIC).

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!