Abstract

Zheneta Tashmukhambetova¹, Yermek Aubakirov¹, Zhanat Shomanova², Kairat Burkhanbekov¹, Ruslan Safarov³, Larissa Sassykova¹, Nurbubi Zhakirova¹ and Maria Faizullaeva⁴

DOI : http://dx.doi.org/10.13005/ojc/330622

This paper represents the results of studies of the influence of non-traditional pretreatment methods of carbon-containing wastes (used tires and waste plastics) by sonication, radiation exposure, treatment with liquid nitrogen and grinding for thermal catalytic recycling in the presence of heavy oil residue. The processes were carried out with composite catalysts based on ferroalloy production waste and natural zeolite in 40:60 and 60:40 wt. % proportions. The sonication of tire and plastic crumbs were done in the range of intensity I = 1-5 W /cm² and t = 50-150 sec time and didn’t give clear patterns about the yields of gaseous and liquid products. Pretreatment of the waste samples with irradiation was examined between 100 to 500 kGy doses and their thermal catalytic recycling had shown increasing of gases about 4-5 wt. % and decreasing of liquid fractions approximately 8-10 wt. %. By the results of pretreatment with liquid nitrogen was found that mainly external changes occur on waste tire and due to this for the grinding method was chosen just the tire sample. The thermal catalytic recycling of ground tire sample and waste plastic had illustrated the highest yield of liquid products compared to other methods of pretreatment.

pre-treating; sonication; irradiation; liquid nitrogen; catalyst

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