Kinetics of Oxidation of dl-Tartaric Acid by Potassium Permanganate in Aqueuos and Aqueous Micellar Media

Hassan, Mohammed; Alhemiary, Nabil A.; Albadani, Abdu S.

doi:10.1007/s13369-012-0242-1

Cited by 9 publications

(5 citation statements)

References 13 publications

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“…These rates were consistent with the ranges for other antibiotics under similar conditions, such as ciprofloxacin (0.61 s −1 M −1 ) [ 29 ]. Hassan et al [ 30 ] have suggested that the accelerated degradation rate observed in the presence of MnO 4 − could also be attributed to the presence of other active manganese oxide species (MnO x ) that may have acted concurrently with MnO 4 − , especially at lower solution pH levels. In our case, the organic solvent was not involved in the experimental setup and so could not cause the auto-decomposition of MnO 4 − to produce MnO 2 , as the MnO 4 − concentration ratio was quite high [ 31 ].…”

Section: Resultsmentioning

confidence: 99%

Developing a Slow-Release Permanganate Composite for Degrading Aquaculture Antibiotics

Sakulthaew,

Chokejaroenrat,

Panya

et al. 2023

Antibiotics

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Copious use of antibiotics in aquaculture farming systems has resulted in surface water contamination in some countries. Our objective was to develop a slow-release oxidant that could be used in situ to reduce antibiotic concentrations in discharges from aquaculture lagoons. We accomplished this by generating a slow-release permanganate (SR-MnO4−) that was composed of a biodegradable wax and a phosphate-based dispersing agent. Sulfadimethoxine (SDM) and its synergistic antibiotics were used as representative surrogates. Kinetic experiments verified that the antibiotic-MnO4− reactions were first-order with respect to MnO4− and initial antibiotic concentration (second-order rates: 0.056–0.128 s−1 M−1). A series of batch experiments showed that solution pH, water matrices, and humic acids impacted SDM degradation efficiency. Degradation plateaus were observed in the presence of humic acids (>20 mgL−1), which caused greater MnO2 production. A mixture of KMnO4/beeswax/paraffin (SRB) at a ratio of 11.5:4:1 (w/w) was better for biodegradability and the continual release of MnO4−, but MnO2 formation altered release patterns. Adding tetrapotassium pyrophosphate (TKPP) into the composite resulted in delaying MnO2 aggregation and increased SDM removal efficiency to 90% due to the increased oxidative sites on the MnO2 particle surface. The MnO4− release data fit the Siepmann–Peppas model over the long term (t < 48 d) while a Higuchi model provided a better fit for shorter timeframes (t < 8 d). Our flow-through discharge tank system using SRB with TKPP continually reduced the SDM concentration in both DI water and lagoon wastewater. These results support SRB with TKPP as an effective composite for treating antibiotic residues in aquaculture discharge water.

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Section: Resultsmentioning

confidence: 99%

Developing a Slow-Release Permanganate Composite for Degrading Aquaculture Antibiotics

Sakulthaew,

Chokejaroenrat,

Panya

et al. 2023

Antibiotics

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“…Oxidizers prepared from the CA chemistry have been studied extensively and most commonly used for the detection of the reducing agents. 21 The putative reaction for IPA is as followsUsing CA as the dopants, the hydroxyl functional groups are oxidized first to aldehydes and then sometimes to carboxylic acids in the presence of potassium dichromate, sulfuric acid, and silver nitrate catalyst. 20 In the case of IPA, which is a secondary alcohol, the reaction can only progress to the ketone, resulting in the generation of acetone, water, and chromium sulfate.…”

Section: Results and Discussionmentioning

confidence: 99%

“…On the basis of the known breathalyzer chemistry, we decided to dope PVP with a CA mixture containing 1 M sulfuric acid. Oxidizers prepared from the CA chemistry have been studied extensively and most commonly used for the detection of the reducing agents . The putative reaction for IPA is as follows Using CA as the dopants, the hydroxyl functional groups are oxidized first to aldehydes and then sometimes to carboxylic acids in the presence of potassium dichromate, sulfuric acid, and silver nitrate catalyst .…”

Section: Results and Discussionmentioning

confidence: 99%

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Chemically Enhanced Polymer-Coated Carbon Nanotube Electronic Gas Sensor for Isopropyl Alcohol Detection

et al. 2018

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Breathing-air quality within commercial airline cabins has come under increased scrutiny because of the identification of volatile organic compounds (VOCs) from the engine bleed air used to provide oxygen to cabins. Ideally, a sensor would be placed within the bleed air pipe itself, enabling detection before it permeated through and contaminated the entire cabin. Current gas-phase sensors suffer from issues with selectivity, do not have the appropriate form factor, or are too complex for commercial deployment. Here, we chose isopropyl alcohol (IPA), a main component of de-icer spray used in the aerospace community, as a target analyte: IPA exposure has been hypothesized to be a key component of aerotoxic syndrome in pre, during, and postflight. IPAs proposed mechanism of action is that of an anesthetic and central nervous system depressant. In this work, we describe IPA sensor development by showing (1) the integration of a polymer as an IPA capture matrix, (2) the adoption of a redox chemical additives as an IPA oxidizer, and (3) the application of carbon nanotubes as an electronic sensing conduit. We demonstrate the ability to not only detect IPA at 100–10 000 ppm in unfiltered, laboratory air but also discriminate among IPA, isoprene, and acetone, especially in comparison to a typical photoionization detector. Overall, we show an electronic device that operates at room temperature and responds preferentially to IPA, where the increase in the resistance corresponds directly to the concentration of IPA. Ultimately, this study opens up the pathway to selective electronic sensors that can enable real-time monitoring in a variety of environments for the force health prevention and protection, and the potential through future work to enable low parts-per-million and possibly high parts-per-billion selective detection of gas-phase VOCs of interest.

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“…In contrast, the positive and relatively high activation entropy could be evidence of the more complex and asymmetric structure of the transition state compared to those of the reactants due to the dissociative nature of the reaction. 33 Positive activation entropy is usually considered strong evidence that electron transfer reaction proceeds via an outer-sphere mechanism, which does not involve forming a complex between oxidant and substrate. 34 Activation Gibbs free energy was calculated using the following equation:…”

Section: Effect Of Temperaturementioning

confidence: 99%

Micellar and Polymer Catalysis in the Kinetics of Oxidation of L-lysine by Permanganate Ion in Perchloric Acid Medium

Hassan¹,

Al-Dhoun²,

Batineh³

et al. 2021

S.Afr.j.chem.

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Kinetics of oxidation of L-lysine by permanganate ion in a perchloric acid medium was investigated to explore the order of the reaction with respect to oxidant and substrate and to study the catalytic behaviour of sodium lauryl sulphate (SLS) and polyethylene glycol (PEG). The reaction was found to be first-order with respect to the oxidant and the substrate and zero-order with respect to hydrogen ion. Changes in the sodium sulphate concentration produce a non-significant variation in the rate of the reaction. SLS and PEG were found to catalyze the reaction. Surfactant catalysis was modelled by Piszkiewicz's cooperativity model, while polymer catalysis was explained with the help of the Benesi-Hildebrand equation. The temperature dependence of the rate of the reaction was elucidated, and activation parameters were obtained. Interestingly, the reaction was found to possess positive activation entropy indicating the dissociative nature of the transition state and outer-sphere electron transfer mechanism. A mechanism of the reaction that is supported by the experimental findings was suggested. KEYWORDS L-lysine, permanganate ion, micellar catalysis, polymer catalysis, outer sphere electron transfer mechanism.

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Kinetics of Oxidation of dl-Tartaric Acid by Potassium Permanganate in Aqueuos and Aqueous Micellar Media

Cited by 9 publications

References 13 publications

Developing a Slow-Release Permanganate Composite for Degrading Aquaculture Antibiotics

Developing a Slow-Release Permanganate Composite for Degrading Aquaculture Antibiotics

Chemically Enhanced Polymer-Coated Carbon Nanotube Electronic Gas Sensor for Isopropyl Alcohol Detection

Micellar and Polymer Catalysis in the Kinetics of Oxidation of L-lysine by Permanganate Ion in Perchloric Acid Medium

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