Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering

Taiyuan, China

Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering

Taiyuan, China
SEARCH FILTERS
Time filter
Source Type

Zhang L.,North University of China | Ni C.,North University of China | Jiu H.,North University of China | Xie C.,North University of China | And 2 more authors.
Ceramics International | Year: 2017

The Ag-TiO2/r-GO nanocomposite was synthesized via a facile one-pot solvothermal method. X-ray diffraction (XRD), Transmission electron microscopy (TEM),High resolution transmission electron microscopy(HRTEM), UV-vis diffuse reflectance spectroscopy (DRS), Fourier transformed infrared spectroscopy (FT-IR), Photoluminescence (PL) and N2 adsorption-desorption were used for the characterization of prepared samples. The adsorbent and photocatalytic performance of prepared samples were evaluated by remove of Rh B dyes and reduction of CO2. Both the adsorbent and photocatalytic ability of all the Ag-TiO2/r-GO samples were much higher than pure hollow TiO2. The excellent adsorbent capacity can be attributed to the large BET surface area and the enhanced photocatalytic activity can be assigned to the predominant properties of graphene and the localized surface plasmon(LSPR) effect of Ag nanoparticles. © 2017 Elsevier Ltd and Techna Group S.r.l.


Xue C.-F.,North University of China | Xue C.-F.,Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering | Liu Y.-Z.,North University of China | Liu Y.-Z.,Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering | And 2 more authors.
Huaxue Gongcheng/Chemical Engineering (China) | Year: 2015

In order to explore the treatment effect of acrylonitrile wastewater in the rotating packed bed (RPB) with different packings and appropriate packings for high gravity air stripping acrylonitrile wastewater technology, the experiments on air stripping acrylonitrile wastewater in the RPB loaded with packing A and packing B respectively were carried out. The effects of packing A and packing B on the removal rate of acrylonitrile were studied comparatively under the same conditions. The results show that the removal rate of acrylonitrile can reach more than 60% with packing A and packing B under the operating conditions. The efficient packing is helpful to improving the removal rate, and the influence of gas-liquid ratio on the removal rate of increase amplitude is most significant, followed by high gravity factor. Compared with the packing A, only considering the effect and cost of acrylonitrile wastewater treatment, packing B is more suitable for the RPB by high gravity air stripping technology. The results provide reference for selection of packing in RPB and industrial application of high gravity air stripping technology. ©, 2015, Editorial Office of Chemical Engineering (China). All right reserved.


Xue C.-F.,North University of China | Xue C.-F.,Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering | Liu Y.-Z.,North University of China | Liu Y.-Z.,Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering | And 2 more authors.
Desalination and Water Treatment | Year: 2015

Air stripping is the one of effective technologies for removing volatile organic compounds from wastewater. However, the low removal rate of acrylonitrile in wastewater by air stripping at ambient temperature and the huge stripping column remain a technical problem. Hence, high gravity is adopted to intensify air stripping process which is strongly affected by gas–liquid mass transfer. The effects of high gravity factor, gas–liquid ratio, liquid spray density and initial concentration of acrylonitrile wastewater on the liquid overall mass transfer coefficient and the removal rate of acrylonitrile were investigated separately. Under the suitable conditions, the liquid overall mass transfer coefficient and acrylonitrile removal efficiency could reach 0.906 kmol m−3 s−1 and 69.1%, respectively. Furthermore, correlations of liquid overall mass transfer coefficient and removal rate of acrylonitrile were established. Comparing experimental data with fitting data, the average relative errors are both below 4%, revealed that the accuracy of correlations was reasonable. In addition, high gravity air stripping and conventional technologies were compared. The obtained results imply great potential and good economic benefits of high gravity air stripping technology in the treatment of acrylonitrile wastewater. © 2015 Balaban Desalination Publications. All rights reserved.


Feng Z.-R.,North University of China | Feng Z.-R.,Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering | Jiao W.-Z.,North University of China | Jiao W.-Z.,Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering | And 10 more authors.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2015

To reduce the content of nitrobenzene in wastewater, an air stripping-O3/H2O2 oxidation treatment process enhanced by high gravity technology was established for the first time. The pretreatment of high concentration nitrobenzene-containing wastewater was conducted by air stripping method, which was enhanced by high gravity technology. The effects of high gravity factor β, gas-flow rate G, liquid-flow rate L and stripping times on the nitrobenzene stripping efficiency were investigated. The experimental results show that the combination of high gravity technology can effectively improve the nitrobenzene removal rate. When the G=20 m3·h-1, L=20 L·h-1, β=80, the concentration of nitrobenzene after stripping for 10 times is decreased to 100 mg·L-1. Then the changes of stripping efficiency are significantly weakened. The lower content wastewater is further treated by advanced oxidation process of O3/H2O2 enhanced by high gravity technology. When L=120 L·h-1, β=80, gas phase O3 concentration CO3=50 mg·L-1, the concentration of H2O2 CH2O2=4. 9 mmol·L-1, initial pH=10.5 and the processing time is 25 min, the removal efficiency of nitrobenzene can reach 99.6% and BOD5/CODCr=0.38; the wastewater treated can meet the standard of biochemistry treatment of integrated wastewater discharge standard(GB8978-1996). ©, 2015, Institute of Chemical Materials, China Academy of Engineering Physics. All right reserved.


Yu L.-S.,North University of China | Yu L.-S.,Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering | Jiao W.-Z.,North University of China | Jiao W.-Z.,Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering | And 8 more authors.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2016

Aim at the problem of easily passivation and poorly continuous usability of iron and carbon packings in iron carbon micro-electrolysis treatment of organic wastewater, the ultrasound (US)-zero valent iron/granular active carbon (Fe0/GAC) micro-electrolysis was used to degrade nitrobenzene wastewater. The continuous usability of Fe0 and GAC was studied. The effect of Fe0 dosage, GAC dosage and initial pH value of wastewater on nitrobenzene degradation by US-Fe0/GAC were investigated. The results show that, when Fe0/GAC is not changed, the removal efficiency of four batches of same nitrobenzene wastewater treated by US-Fe0/GAC is all about 90%, whereas under Fe0/GAC treatment, 4 times of nitrobenzene removal efficiencies are 48%, 36%, 25% and 17%, respectively. The ultrasound can not only maintain the high activety of iron and carbon packings to use them continuously, but also can effectively improve the removal efficiency of nitrobenzene treated by Fe0/GAC. The suitable operating parameters of degrading nitrobenzene obtained are Fe0 dosage 20 g·L-1, GAC dosage 10 g·L-1, initial pH=4 for wastewater. Under these conditions, after 80 min, the removal efficiency of nitrobenzene reaches 93% and the biochemical coefficient BOD5/CODcr of effluent reaches 0.32, which can meet the requirement of biochemical treatment. © 2016, Editorial Board of Chinese Chinese Journal of Energetic Materials. All right reserved.


Wu X.-N.,North University of China | Wu X.-N.,Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering | Liu Y.-Z.,North University of China | Liu Y.-Z.,Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering | And 2 more authors.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2016

Rotating packed bed (RPB) was applied in adsorption removal of phenol from simulation wastewater, with the activated carbon as adsorbent. The influence of operating parameters of RPB on removal efficiency such as high gravity factor, flow rate and initial concentration of phenol wastewater were examined to determine the optimum operating conditions. The pseudo-first-order model and the pseudo-second-order model were used to study the adsorption kinetics. The effect of operating parameters on the adsorption rate constant were studied. The removal efficiency and adsorption rate constant were compared with those of traditional adsorption method. Results show that under the operational conditions: high gravity factor of 44.68, flow rate of 35 L·h-1, initial concentration of phenol wastewater of 1000 mg·L-1, the adsorption time of 2 h, the removal efficiency of phenol can reach maximum about 90%, which is 30% higher than the traditional adsorption method. The adsorption rate constant obtained by pseudo-second-order model increases with the increasing of high gravity factor and flow rate. The kinetics equations in RPB and traditional adsorption method under the optimum condition are as follows: t/qt=0.02648+0.77932t, t/qt=0.02869+1.55707t, and the adsorption rate constant improves from 5.28×10-4 to 9.02×10-4. © 2016, Editorial Board of Chinese Chinese Journal of Energetic Materials. All right reserved.

Loading Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering collaborators
Loading Shanxi Province Key Laboratory of Higee Oriented Chemical Engineering collaborators