Ecological and Technological Aspects of Liquid-phase Filling of Styrene-butadiene Rubber with Black Carbon in an Ultrasonic Field

Abstract

It has been found that black carbon exhibits increased sorption activity in relation to the emulsifying agents of the latex system under ultrasonic impact, which contributes to destabilization of the latex and the release of the elastomeric composition without the use of coagulating agents. It was revealed that as a result of the black carbon sorption of non-biodegradable leukanol, emulsifying substances in the form of resin soaps and fatty acids, the overall pollution of wastewater is reduced, and treatment efficiency of up to 98% is achieved in terms of COD. It has been shown that the liquid-phase filling of SKS-30ARK rubber at the latex stage with high-structural black carbon of grade P245 at a ratio, wt. part — rubber: black carbon = 100 : 100 allows to reduce the content of non-biodegradable leukanol down to 0.1 mg/dm³ and increase the biooxidability index of wastewater to 83%.