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As the massive agent in the paper mills, deinking agent was wasted to pollute environment. What's worse, wood extractives increased environmental pollution. Therefore, PyGC/MS was used to analyze the bioenergy resource of bamboo ethanol extractives. Relative content of each component was determined by area normalization. The ethanol extractives contain 117 compounds namely 2-furancarboxaldehyde, 5(hydroxymethyl)...
Acticarbon can absorb and gather -OH, -X etc. In phenol-containing wastewater these organic micropollutant (such as p-chlorophenol and o-chlorophenol) may affect COD value. After activation treatment, impregnated acticarbon with 6.0% Cu(NO3)2 solution, then put it into a drying oven of 270degC, copper will be reduced and thermosetting on its micro surface. Fixed bed was choosen as the equipment, absorption...
Phenol is a highly toxic and carcinogenic compound and its biological treatment has been broadly agreed that it is economical, practical and it leads to a complete removal of phenol (degraded to inorganic, CO2 H2O etc.). The effect of acclimated activated sludge in the phenol biodegradation has been studied. First, the batch acclimated period have been performed gradually by elevated the activated...
As the most expensive wood tree, Santalum album has been planted more than 2000 mu in South China now. A mass of Santalum album leaves was naturally abandoned and degradable so that the resources were wasted. Therefore, in order to overcome the negative effects, Py-GC/MS was used to analyze the extractives of autumn Santalum album leaves. Relative content of each component was determined by area normalization...
Gigantochloa ligulata is both a wide use as biomatrals and an antiquity as medicine. It contains many kinds of organosufide compounds. Therefore, Py-GC/MS was used to analyse and evaluate the application potential of Gigantochloa ligulata for biomedicine. The results indicated that the main components of the Gigantochloa ligulata by Py-GC/MS were carbon dioxide (19.67%), acetic acid (16.08%), acetone...
Wood extractives for bioenergy with high additional value is looked upon as a strategy task. In this paper, the chemical components in the benzene/ethanol extractives of Eucalyptus urophylla wood were isolated and identified by Py-GC/MS so as to increase economic benefits. In this paper, the chemical components in the acetic ether extractives of Eucalyptus urophylla wood were isolated and identified...
Complex permittivity spectra of mixtures of 1-heptanol and phenol over a range of concentration are obtained in the frequency range 30 MHz to 3.0 GHz using Vector Network Analyzer (VNA). Obtained complex permittivity data points at different frequencies were fitted into Debye model to evaluate dielectric relaxation parameters like, a relaxation time (tau), static permittivity (isin0) and permittivity...
The present work reports the findings of computational conformational analysis and dielectric studies of two alkyl alcohols and two phenols, namely hexanol, heptanol, 2-propylphenol and 4-propylphenol and their binary mixtures. The alcohol group is known to be important in the study of influence of processing liquids on the dielectric properties and performance of MEMS devices.
Support victor machine (SVM) and artificial neural networks (ANNs) including back-propagation network (BPNN) and radial basis function network (RBFNN) were used to investigate toxic effect of phenols on fathead minnows. Molecular connectivity index was used as structural descriptor. The applicability of established BPNNs, RBFNNs and SVM models based on optimized parameters was compared using leave-one-out...
Non-equilibrium plasma generated by electrical discharges in liquids initiate various chemical and physical processes that can be potentially utilized in different environmental, biological or medical applications. These processes include high electric field, ultraviolet radiation, overpressure shock waves and, of particular importance, formation of various reactive chemical species such as radicals...
A new electric-assisted solid phase microextraction (EA-SPME) technique using the lab-made carbonic fiber has been developed to sample organic compounds in water. The EA-SPME cell is composed by two electrodes: the working electrode is a SPME fiber and the counter-electrode is a piece of platinum (Pt) wire. Phenol, parachlorophenol, nitrobenzene and chloroform were examined under different electric...
In this study, the adsorption kinetic, equilibrium and thermodynamic parameters of phenol from aqueous solutions by nano-size hydroxyapatite (n-HAp) powders were investigated at various temperatures and concentrations. The first-order kinetic model, pseudo-second-order kinetic model and intraparticle diffusion model were used to describe the kinetic data, and the data constants were evaluated. The...
The degradation of atrazine, Cationic Red X-GRL in the presence of monophenolic compound (phenol, 4-CP) by Fenton system at a low Fe2+ concentration of 7 mg-L-1 was investigated, compared with that without monophenolic compound. In the absence of monophenolic compound, the degradation of atrazine was very quick at the first 2 min but then almost stopped. However, the degradation of atrazine with monophenolic...
The diagram of comparative development of frequency bands and powers by modern radioelectronic means and apparatus for biomedical technologies has been made up. Terminology and physical basis of selection of the terahertz band of electromagnetic waves are given. Comparative energy characteristics of terahertz and extremely-high frequencies waves are presented, tables of molecular spectrums of atmospheric...
This study reports the possibility of electrostatic micromanipulation of a conductive/dielectric particle using a single probe. The manipulation system consists of three objects: a conductive probe as a manipulating tool, a conductive plate as a substrate, and a conductive/dielectric particle that dubs as a micro-particle. For a conductive particle, a micromanipulation technique by applying accelerating...
High standards of drinking water quality and growing man-caused pollution of the environment require new technologies of water treatment that would allow to increase the efficiency of water purification and not to contribute any impurities by adding chemical reagents during treatment. Highly efficient are the technologies of simultaneous action of several factors, such as ultraviolet radiation and...
This work shows a technology of artificial cloning for industrial sensors by means of the use of neural networks and genetic mapping. The neural networks allow develop to the intelligent structure of the sensors. For it, the method of activation of random values is used to train the sensors and to carry out the learning originated from real devices. The genetic mapping allows the generation of codes...
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