Laser diffraction analysis of purified Descurainia Sophia seeds by a tribo-aero-electrostatic system M., Jafari-Naeimi K., Samimi-Akhijahani H. (2019): Laser diffraction analysis of purified Descurainia Sophia seeds by a tribo-aero-electrostatic system. Res. Agr. Eng., 65: 123-130.
download PDF

In order to separate the impurities in vegetable seeds, a tribo-aero-electrostatic separator was designed and manufactured. The data analysis of the pure Descurainia Sophia seed shows that the interaction of the voltage, distance and angle was significant on the weight of the D. Sophia at the level of 1%. To determine and compare the size of the separated seeds, a laser diffraction device with the possibility of analysing the size distribution of the particles was used. The results showed that the best purity (99.5%) with the highest percentage of the relative frequency of the D. Sophia seeds size was obtained for box 1 (the first box) with a seed size of 680 μm. By moving from box 1 towards box 4, the amount of the impurities due to the variation of the electrical properties of the materials increases, although the value of the impurities for the samples is acceptable.

Aksa W., Medles K., Rezug M., Boukhoulda M.F., Bilici M., Dascalescu L. (2013): Two stage electrostatic separator for the recycling of plastics from waste electrical and electronic equipment. Journal of Electrostatic, 71: 681–688.
Aman F., Morar R., Kohnlechner R., Samuila A., Dascalescu L. (2004): High-voltage electrode position: a key factor of electrostatic separation efficiency. Journal of IEEE Transactions on Industry Applications, 40: 905–910.
Cross J.A., Mumford-van Urk H., Singh S. (1981): Some experiments in powder charging and its significance to industrial processes. Journal of Electrostatic, 10: 235–243.
Chen Z., Liu F., Wang L., Li Y., Wang R., Chen Z. (2014): Tribo-charging properties of wheat bran fragments in air–solid pipe flow. Food Research International, 62: 262–271.
Cunha M., Carvalho C., Marcal A.R.S. (2012): Assessing the ability of image processing software to analyse spray quality on water-sensitive papers used as artificial targets. Biosystems Engineering, 111: 11–23.
Dodbiba G., Shibayama A., Miyazaki T., Fujita T. (2003): Triboelectrostatic separation of ABS, PS and PP plastic mixture. Materials Transactions, 44: 161–166.
Dwari R. K., Rao K. (2009): Fine coal preparation using novel tribo-electrostatic separator. Minerals Engineering, 22: 119–127.
Healy R.M. (2013): Quantitative determination of carbonaceous particle mixing state in Paris using single particle mass spectrometer and aerosol mass spectrometer measurements. Atmospheric Chemistry and Physics, 13: 9479–9496.
Jafari M., Chegini G., Shayegani Akmal A.A., Rezaeealam B. (2019): A roll type corona discharge–electrostatic separator for separating wheat grain and straw particles. Journal of Food Process Engineering, 42: 1–8.
Haji Sharifi A. (2003): Secrets of Herbal Drugs. Tehran, Golshan Publication: 44.
Jiang W., Jia L., Zhen-Ming X. (2009): A new two-roll electrostatic separator for recycling of metals and nonmetals from waste printed circuit board. Journal of Hazardous Materials, 161: 257–262.
Leonov V.S. (1984): Seed divisibility criteria during electrical separation. Mekhanizasiya I Elektrifikatsiya Sotsialistcheskogo Sel skogo Khozyiastv, 4: 47–49.
Li T.X., Ban H., Hower J. C., Stencel J. M., Sario K. (1999): Dry triboelectrostatic separation of mineral particles: a potential application in space exploration. Journal of Electrostatics, 47: 133–142.
Martin M.A., Montero E. (2002): Laser diffraction and multifractal analysis for the characterization of dry soil volume-size distributions. Soil Tillage Research, 64: 113–123.
McDonald M.B. Copeland L.O. (1997): Seed Production: Principles and Practices. New York, International Thomson Publishing: 749.
Naik S., Hancock B., Abramov Y., Weili Y, Rowland M., Huang Z., Chudhuri B. (2016): Quantification of tribocharging of pharmaceutical powders in v-blenders: experiments, multiscale modeling, and simulations. Journal of Pharmaceutical Sciences, 105: 1467–1477.
Patel M.K., Parveen B., Sahoo H.K., Patel B., Kumar A., Singh M., Nayak M.K., Rajan P. (2017): An advance air-induced air-assisted electrostatic nozzle with enhanced performance. Computer and Electronics in Agriculture, 135: 280–288.
Pieri L., Bittelli M., Rossi Pisa P. (2006): Laser diffraction, transmission electron microscopy and image analysis to evaluate a bimodal Gaussian model for particle size distribution in soils. Geoderma, 135: 118–132.
Tilmatine A., Bendimerad S. (2009): Plastic wastes recovery using electrostatic forces. Frontier Electronic and Electron Engineering, 4: 446–450.
Trigwell S., Grable N., Yurteri C.U., Mazumder M.K., Grable N., Mazumder M.K. (2001): Effects of surface properties on the tribo-charging characteristics of polymer powder as applied to industrial processes. In: Proceeding from 36th IAS Annual Meeting of, published by IEEE, Chicago, Sept 30.–Oct 4., 2001: 39, 79–86.
Trigwell S. (2003): Correlation between surface structure and tribocharging of powders. [Ph.D. Thesis.] Fayetteville, University of Arkansas: 214.
Turcaniova L., Soong Y., Lovas M., Mockovciakova A., Orinak A., Justinova M., Znamenackova I., Bezovska M., Marchant S. (2004): The effect of microwave radiation on the triboelectrostatic separation of coal. Fuel, 83: 2075–2079.
Winkel A., Mosquera J., Aarnink A.J.A., Koerkamp P.W.G.G., Ogink N.W.M. (2015): Evaluation of a dry filter and an electrostatic precipitator for exhaust air cleaning at commercial non-cage laying hen houses. Biosystems Engineering, 129: 212–225.
Xin-xi Z., Dai-yon D., Bing T., Jin-song W., Feng D., Hai-sheng L., Rui-xin M. (2009): Research on the triboelectrostatic separation of minerals from coal. Procedia Earth and Planetary Science, 1: 845–850.
Zeinizadeh S., Heydari M. (2002): Electricity and Magnetic. Tehran, Ghaem pres: 420.
download PDF

© 2020 Czech Academy of Agricultural Sciences