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Numerical study of integrated pollutant control equipment with activated carbon absorbers

100%

Hao X. , Chao X. , Zhao Y.

Polish Journal of Environmental Studies

2014

tom 23

nr 1

Novel pollutant control equipment, which were called integrated pollutant control equipment, consisted of bag filters and activated carbon (AC) absorbers. The AC absorbers were put forward to absorb the additional pollutants between the old and new emission standards to satisfy Chinese emission standards. The absorbers could be fixed (mobile) bed, annular column, or fluidized bed. The numerical method was employed to simulate the inner flow fields in the integrated equipment. The results show that annular column absorbers can make the flow field more uniform than the others, but its absorption duration has to be discussed. The mobile bed and the annular column absorbers are recommended. The fluidized bed absorber can be applied only if strong heat and mass transfer during absorbtion are needed.

Effect of goose parvovirus and duck circovirus coinfection in ducks

75%

Liu J. , Yang X. , Hao X. , Feng Y. , Zhang Y. , Cheng Z.

Journal of Veterinary Research

2020

tom 64

nr 3

Luminescence of hydrothermally fabricated PbF2:Er3+ particles and their application in bifacial silicon solar cells

75%

Yang F. , Wu C. , Hao X. , Chen Y. , Lu J. , Yang S.

Optica Applicata

2014

tom Vol. 44, nr 3

463--473

We report the synthesis of PbF2:Er3+ particles using a hydrothermal method. The structure and upconversion emission properties of the products are investigated by scanning electron microscopy, X-ray diffractometer, Raman spectrophotometer and fluorescence spectrometry. An increase in Er3+ concentration in the crystals changes the PbF2 structure from a mixed phase to a cubic phase and decreases the grain size to nanoscale levels. Enhanced upconversion efficiency is achieved after annealing resulted from the formation of the cubic phase and the increase of grain size. The optimal Er3+ concentration is found to be 4% after annealing, and applied to the back of a bifacial silicon solar cell, maximum external quantum efficiencies of 0.38% and 0.79% are respectively obtained under 0.77 W/cm2 laser excitation (1560 nm) and AM1.5 + laser co-excitation.