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This paper deals with the application of polyaniline conducting polymer as a new sensor material for detection of phenol. The sensor is designed using bare carbon paste electrode (cPE), nonimprinted polymer-modified electrode (CPE/NIP) and imprinted polymer-modified electrode (CPE/MIP). These electrodes were prepared by electropolymerization of the monomer (aniline) in the presence of phenol as the...
Effects on electromagnetic field (EMF) characteristics inside aircraft due to internal structures, such as phenol internal walls are experimentally investigated using a reverberation chamber. This is aiming to improve the accuracy of the numerical analysis method for the electromagnetic compatibility estimation of the Boeing 777 class large aircraft based on finite-difference time-domain (FDTD) technique...
Wastewater from chemical plant, refinery and pharmaceutical factory contains many kinds of aromatic compounds. Wastewater including aromatic compounds is hazardous and difficult to be biodegraded. This study concerned the method of extracting aromatic compounds from the wastewater using biodiesel as extracting solvent. Biodiesel as solvent has some special characteristics: its solubility in water...
The nitrogen-fluorine-doped nano-titanium dioxide was synthetised by hydrothermal method, which was compounded at 180 °C and calcined in the temperature of 500 °C. With phenol taken as analog source, ultraviolet lamp as light source, the photocatalytic degradation was carried out in different reaction conditions. The results showed that, under the condition as follows: initial pH of solution was 6,...
A new phenol-degrading bacterium with high biodegradation activity and high tolerance of phenol, strain B3, was isolated from the coking wastewater of Coking Plant of Shougang in Beijing. The physic-biochemical characteristics as well as 16SrDNA gene sequence analysis were applied to classify the bacteria and its characteristics of degrading phenol. The results showed that the strain B3 was identified...
H2O2 and O3 when used in water under UV light is particularly well suited for the breakdown of organic molecules as the cleavage of the O-O bond gives OH radicals or “O” atoms. The OH radical is known to be extremely reactive with most organic molecules with H-atom donor properties and promptly attacks such species to produce new types of radicals which may subsequently initiate several radical chain...
In view of the possibility of Phenol pollution accident existing in source water, experimental study on the application of powdered activated carbon (PAC) regarded as an emergency way to Phenol pollution treatment is performed in this article, taking the water from Songhua River as raw water. Comparing the Phenol adsorption efficiency of four types of powdered activated carbon through static tests...
The hypercrosslinked polystyrene adsorbents of LY-4 and LY-5 were prepared By Friedel-Crafts post-crosslinking reaction with phenol and naphtho. The physical properties of absorbents showed that both phenolic hydroxyl group content and BET surface area of LM-5 are higher than LM-4. Accordingto the adsorption experiment in aqueous solution, the adsorption capacity of aniline onto LM-5 is bigger than...
The use of TiO2 for photocatalytic degradation of phenol solution was investigated. The effects of operating parameters such as catalyst dosage, oxidant dosage, the initial phenol concentration, and pH of the solution on photodegradation process were examined. The efficiency of photocatalytic degradation is the highest as pH=6, photocatalyst TiO2 dosage 0.2 g·L−1, 20 min UV irradiation, the efficiency...
Dicumyl peroxide(DCPO) is usually employed as an initiator for polymerization, a source of free radicals, a hardener, and a linking agent. The calculation about the kinetics and thermal decomposition of dicumyl peroxide (DCPO) and DCPO mixed with catalysts are required for safety concerns, because of its wide applications and accident cases. The isoconversional kinetic study on the thermal behaviour...
A post-chemiluminescence (PCL) phenomenon was observed when phenol solution was injected into the reaction mixture after the finish of chemiluminescence (CL) reaction of alkaline potassium ferricyanide and calcein. The optimum conditions for this chemiluminescent reaction are in detail studied using a flow injection system. Based on the PCL reaction, a rapid and sensitive method for the determination...
The micro/mesoporous composite Ti/13X/MCM-41 was prepared under hydrothermal conditions. X-ray power diffraction pattern, nitrogen adsorption data and Fourier-transform infrared confirmed the presence of mesoporous MCM-41 and microporous 13X in the composite and the well-dispersed TiO2 over the 13X/MCM-41 surface. Scanning electron microscope studies revealed that the micro/mesoporous composite was...
The quite effective electro-oxidation of phenol was experimentally investigated using a three-dimension electrode reactor in this paper. Experiments were conducted to examine the effects of the operating conditions, such as voltage, air-liquid ratio and dosage of NaCl on the phenol removal efficiency. The experimental results shown that the operational factor of applied voltage played the most important...
To explore treatment of phenol wastewater, carbonate pillared Mg/Al hydrotalcites and four kinds of modified Mg/Al hydrotalcites with different concentration of SDBS were synthesized by coprecipitation method and characterized by XRD and FTIR respectively. Then the five kinds of Mg/Al hydrotalcites were used as adsorbent to adsorb phenol in solution, in the meantime the adsorption mechanism and influencing...
In this paper, two kinds of CNT/TiO2 composites were synthesized by different sol-gel methods. Comparing to the TiO2 /CNTs prepared by method 1 (Tetrabutyl titanate+CNT, H2O), the catalysts synthesized by method 2 (Tetrabutyl titanate, CNT+H2O) showed higher photocatalytic activity and the optimum content of CNT was 1%. Furthermore, diverse reactors were introduced to deal with methyl orange and phenol...
The research studied enhanced treatment of sewage from discharging points of rivers by biofilm process dosing with enzyme and the effect of phenol on removal rates of the main pollution indexes, and investigated promotion effect of enzyme (including the laboratory developed compounded enzyme and the foreign composite enzyme) on treatment of sewage by biofilm process. The research results indicated...
The effect of inorganic ions on Fenton's reagent to degrade phenol in water is studied. Experimental results show that ferric ions can enhance the catalyst-oxidation ability of Fenton's reagent. Phosphate,chloride ions, copper ions and carbonate ions will suppress the catalyst-oxidation ability, and the inhibition ability of ions is: H2PO4->;Cl- >;Cu2+>;HCO3-~CO32-.For the ions of sulfate...
The research studied enhanced treatment of sewage from discharging points of rivers by biofilm process dosing with enzyme and the effect of phenol on removal rates of the main pollution indexes, and investigated promotion effect of enzyme (including the laboratory developed compounded enzyme and the foreign composite enzyme) on treatment of sewage by biofilm process. The research results indicated...
Wood vinegar is a product of agriculture and forestry residues pyrolysis with insecticidal, antibacterial effect, and is even found to have health care. In recent years, wood vinegar is being taken seriously more and more by people. Cotton stalk wood vinegar is derived from cotton stalk pyrolysis. It is the gases generated from the pyrolysis of cottons talk, changing into liquid products through condensation,...
Recovery of phenol from the wastewater produced in the multi-cogeneration system has been studied. Based on the experimental results and theoretical analysis, butyl acetate was selected as the extractant and 99.95% of the volatile phenols in the wastewater was recovered in five stage extraction. The solvent recovery in the distillation column and the stripping column were also considered. Moreover,...
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