Advertisement

Topics

Removal of chloramphenicol in aqueous solutions by modified humic acid loaded with nanoscale zero-valent iron particles.

08:00 EDT 17th March 2019 | BioPortfolio

Summary of "Removal of chloramphenicol in aqueous solutions by modified humic acid loaded with nanoscale zero-valent iron particles."

As a natural organic carbon skeleton, humic acid (HA) was loaded with nanoscale zero-valent iron (nZVI) Particles to remove chloramphenicol (CAP) from aqueous solution. The pore morphology and structure, the type, the distribution and valence state of element, and the class of functional groups on the surface of the material were shown by SEM/EDS, XPS, BET and FTIR. When the load ratio of nZVI on HA was 1:30, the iron content in the material was minimized, the specific gravity of the economic material-HA was increased, and the removal efficiency of CAP was 80.0% or higher. In addition, the mass ratio of nZVI on HA, the dosage of nZVI/HA-30, the initial pH and CAP concentration of the solution, these four general factors, played an important role in the efficiency and equilibrium time of the CAP removal. The removal efficiency of CAP by nZVI/HA-30 was 84.2% when the dosage was 1.0 g (100 mL), the initial concentration of CAP was 30 mg L and the pH was 3. The reaction pathway and removal mechanism of ZVI/HA-30 were studied by the concentration of total and ferrous iron ions in the solution, UV-Vis and MS. The CAP was continuously denitrified and dechlorinated, decomposed into easily degradable substances by nZVI particles supported on HA, which was consistent with the first-order kinetic model within 5 min. This newly synthesized material was economical and efficient, easy to store, effectively prevented agglomeration and passivation of nZVI, and had a good application prospect for removing contaminants from water.

Affiliation

Journal Details

This article was published in the following journal.

Name: Chemosphere
ISSN: 1879-1298
Pages: 298-306

Links

DeepDyve research library

PubMed Articles [16032 Associated PubMed Articles listed on BioPortfolio]

Cu and Co nanoparticles co-doped MIL-101 as a novel adsorbent for efficient removal of tetracycline from aqueous solutions.

Chromium metal-organic framework (MIL-101(Cr)) has been widely studied for removing organic contaminants from aqueous solutions due to its excellent water stability and giant pore size, but its low ad...

Adsorption mechanisms of hexavalent chromium from aqueous solutions on modified activated carbons.

Functional groups of the activated carbon play the major role in metals removal from aqueous solutions and, for this reason, different treatments can be used to modify the adsorbent surface improving ...

Enhanced distribution of humic acid-modified nanoscale magnesia for in situ reactive zone removal of Cd from simulated groundwater.

Efficient injection and distribution of nanoparticles in porous media are considered a formidable technical hurdle for injection-based in situ remediation. One approach to enhance the mobility of nano...

Synthesis and adsorption of FeMnLa-impregnated biochar composite as an adsorbent for As(III) removal from aqueous solutions.

Groundwater with elevated As concentrations is a global concern, and low-cost, high-efficiency removal technologies are necessary. Therefore, we have prepared three adsorbent FeMnLa-impregnated biocha...

Synergistic effects and kinetics of rGO-modified TiO nanocomposite on adsorption and photocatalytic degradation of humic acid.

Graphene oxide was prepared using the modified Hummers method and reduced graphene oxide (rGO) - titanium dioxide (TiO) nanocomposite was synthesised using the one-step hydrothermal treatment. The syn...

Clinical Trials [6023 Associated Clinical Trials listed on BioPortfolio]

Ceftriaxone Versus Chloramphenicol for Treatment of Severe Pneumonia in Children

Acute lower respiratory tract infections are a leading cause of morbidity and mortality in sub Saharan Africa. The World Health Organisation (WHO) still recommends intravenous chlorampheni...

A Placebo Controlled Double Masked Clinical Assessment Study of Essential Fatty Acid Supplement and Its Effect on Patients With Apparent Aqueous Deficient Dry Eye Syndrome

To determine the effect of Essential Fatty Acids (EFA’s) on Meibomian Gland lipids and aqueous tear production in patients with “dry eyes”.

Comparison of Low Volume PEG-Asc and Lower Volume PEG-Asc With Bisacodyl

Recently a low-volume polyethylene glycol containing ascorbic acid (PEG-Asc) formulation has proven as safe and effective as traditional 4-L PEG solutions for colonoscopy preparation. Howe...

Drug Delivery Devices for Osteomyelitis

Fifty-one patients suffering from chronic post-traumatic or postoperative osteomyelitis of the lower extremities were included in the retrospective investigation. The patients were assigne...

A Study Comparing Shared Solutions® Plus MS Center Support Versus Shared Solutions® Alone

To compare the effectiveness of a 90-day Copaxone® adherence enhancement program for a sample of MS patients who are at high risk of nonadherence and receive support from Shared Solutions...

Medical and Biotech [MESH] Definitions

An enzyme that catalyzes the acetylation of chloramphenicol to yield chloramphenicol 3-acetate. Since chloramphenicol 3-acetate does not bind to bacterial ribosomes and is not an inhibitor of peptidyltransferase, the enzyme is responsible for the naturally occurring chloramphenicol resistance in bacteria. The enzyme, for which variants are known, is found in both gram-negative and gram-positive bacteria. EC 2.3.1.28.

Organic matter in a state of advanced decay, after passing through the stages of COMPOST and PEAT and before becoming lignite (COAL). It is composed of a heterogenous mixture of compounds including phenolic radicals and acids that polymerize and are not easily separated nor analyzed. (E.A. Ghabbour & G. Davies, eds. Humic Substances, 2001).

Nonsusceptibility of bacteria to the action of CHLORAMPHENICOL, a potent inhibitor of protein synthesis in the 50S ribosomal subunit where amino acids are added to nascent bacterial polypeptides.

Sterile solutions, essentially free from foreign particles and suitably compounded and dispensed, for instillation into the eye. It does not include solutions for cleaning eyeglasses or CONTACT LENS SOLUTIONS. (From Dorland, 27th ed)

Local antibacterial that probably acts by releasing formaldehyde in aqueous solutions. It is used for irrigation of infected body cavities - bladder, peritoneum, etc. and as a spray for burns.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topic

Multiple Sclerosis MS
Multiple sclerosis (MS) is the most common disabling neurological condition affecting 100,000 young adults in the UK. The condition results from autoimmune damage to myelin, causing interference in nerve signaling. Symptoms experienced depend on the pa...


Searches Linking to this Article