Influence of humic acids of different origins on oxidation of phenol and chlorophenols by permanganate

He, Di; Guan, Xiaohong; Ma, Jun; Yang, Xue; Cui, Chongwei

doi:10.1016/j.jhazmat.2010.06.086

Cited by 65 publications

(43 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reaction of chlorophenols with permanganate was second order and first order with respect to chlorophenol and permanganate (Lee and Sebastian 1981;He et al 2010). Therefore, the reactions of chlorophenols with permanganate under un-buffered conditions are assumed to be second order and first order with respect to each reactant.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the reactions of chlorophenols with permanganate under un-buffered conditions are assumed to be second order and first order with respect to each reactant. Pseudo-first-order reaction rates for chlorophenol consumption by excess permanganate have been reported as 2,6-DCP>2,4-DCP>2-CP>4-CP (He et al 2010) while Zhang et al (2003) found the following sequence: 4-CP>2,4-DCP>2,6-DCP. The reaction sequences for second-order rates were 2, 4-DCP > 2-CP > 3-CP (Waldemer and Tratnyek 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Commonly used quenching agents for oxidants include sodium sulfite, peroxide, sodium thiosulfate and hydroxylamine hydrochloride. He et al (2010) used sodium thiosulfate as a quenching agent for permanganate with subsequent analysis by high-performance liquid chromatography using UV detection at 270-305 nm. Zhang et al (2003) used sodium sulfite as a quenching agent followed by gas chromatography.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Oxidation of Chlorophenols in Aqueous Solution by Excess Potassium Permanganate

Hossain

McLaughlan

2011

Water Air Soil Pollut

View full text Add to dashboard Cite

A simple spectrophotometric method was developed to quantify chlorophenol (CP) concentrations after reaction with potassium permanganate and quenching with sodium sulfite. Other quenching agents (peroxide, sodium thiosulfate and hydroxylamine hydrochloride) were found to create absorbance in the spectral range required for CP quantification. Analysis at pH 12 gave greater absorption and sensitivity for the method compared with pH 5.6. The calibration curves of the proposed methods were linear in the concentration ranges 0.0061-0.61 and 0.0078-0.78 mM with detection limit of 0.0006 and 0.0008 mM for dichlorophenols and monochlorophenols, respectively. The oxidation kinetics of five chlorophenols in aqueous solution with excess potassium permanganate were evaluated using the analytical method. The pseudo-first-order reaction rates were found to be relatively rapid 1.42× 10 −3 to 0.024 s −1 and followed the sequence 2-chlorophenol (2-CP) > 2,6-dichlorophenol (2,6-DCP)> 4-chlorophenol (4-CP) > 2,4-dichlorophenol (2, 4-DCP)>3-chlorophenol (3-CP). The apparent second-order rate constant was calculated from the measured pseudo-first-order rate constant with respect to CP with initial KMnO 4 concentration (1.5 mM) and follows the same sequence of pseudofirst-order rate constant. This shows that chlorine atoms in the structure of chlorophenol had a significant influence on the oxidation of chlorophenols by potassium permanganate. Permanganate can be used for the treatment of chlorophenolcontaminated soil and groundwater.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Oxidation of Chlorophenols in Aqueous Solution by Excess Potassium Permanganate

Hossain

McLaughlan

2011

Water Air Soil Pollut

View full text Add to dashboard Cite

show abstract

“…Coated membranes were prepared with size 5.5 cm in diameter 12 . The solute concentrations of feed and permeate (Cf and Cp) were evaluated using UV-Vis spectrometer at a wavelength of 254nm [13][14] . PWF and rejection values were calculated using following Equation (1) and (2):…”

Section: Membrane Performancementioning

confidence: 99%

Membrane Performance: TiO2 Nanoparticles Coated on Polysulfone (PSf) Ultrafiltration Membrane Surfaces

et al. 2013

View full text Add to dashboard Cite

This study focuses on the modification polysulfone (PSf) ultrafiltration membrane surfaces via coated and irradiated with titanium dioxide (TiO2) nanoparticles with UV lights respectively. Basically, the flat sheet membrane was prepared using phase inversion technique with three conditions: (i) uncoated PSf membrane, (ii) coated PSf membrane with TiO2 and (iii) PSf membrane coated with TiO2 irradiated to UV. The coating process was carried out using dipping method into TiO2 nanoparticles suspension at different concentrations (0.01, 0.03 and 0.05 wt.%). Membrane was immersed in all suspension for 15 and 30 minutes. Then, coated membranes were exposured under 184 Watts UV lamp at two different durations, 15 and 30 minutes. The performance of membranes was evaluated in terms of pure water flux (PWF) and humic acid (HA) rejection. The morphology of membranes was characterized using scanning electron microscopy (SEM). Analysis of the result revealed that 15 minutes immersion of membrane in TiO2 suspension showed a better performance in term permeation and rejection of compared to 30 min immersion. This is due to the pore plugging as time of immersion increased. Therefore, the coated membranes with 0.03 wt.% of TiO2 nanoparticles at 15 minutes immersion and 15 minutes exposure of UV light irradiation were determined as an ideal performance of rejection and permeation compared to the other.

show abstract

“…Potassium permanganate (Mn(VII)) is a strong and active oxidant and has been extensively used in drinking water and wastewater treatment practices for decades (He et al, 2010;Aleboyeh et al, 2009). There have been reports that Mn(VII) could oxidize a wide range of emerging environmental micropollutants, such as chlorophenol, ciprofloxacin, lincomycin, triclosan, estradiol, bisphenol A and sulfamethoxazole (Gao et al, 2014;Liu et al, 2009;Hossain and McLaughlan, 2012;Hu et al, 2011;Zhang et al, 2013;Jiang et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Oxidation of cefazolin by potassium permanganate: Transformation products and plausible pathways

Wei

et al. 2016

Chemosphere

View full text Add to dashboard Cite

Influence of humic acids of different origins on oxidation of phenol and chlorophenols by permanganate

Cited by 65 publications

References 41 publications

Oxidation of Chlorophenols in Aqueous Solution by Excess Potassium Permanganate

Oxidation of Chlorophenols in Aqueous Solution by Excess Potassium Permanganate

Membrane Performance: TiO2 Nanoparticles Coated on Polysulfone (PSf) Ultrafiltration Membrane Surfaces

Oxidation of cefazolin by potassium permanganate: Transformation products and plausible pathways

Contact Info

Product

Resources

About