The aim of this study was to assess the utilization of agricultural waste as the support material for rhodococcus cells immobilization. Hazelnut (Corylus avellana L.) shell, common walnut (Juglans regia L.) shell, peanut (Arachis hypogaea L.) shell, pistachios (Pistacia vera L.) shell, pumpkin (Cucurbita pepo L.) and sunflower (Helianthus annuus L.) seeds husk were used to immobilize cells of Rhodococcus rhodochrous CNMN-Ac-05, destructor of persistent organic pollutants. The peanut shell as a support material demonstrated a good adsorption of bacterial cells – 7.95 mg dry cells per gram of carrier (34.3%), while the efficiency of cells immobilization on the sunflower’s husk was very low – 6.2%. The reduction of carrier particle size to 100–500 μm was contributed to an increase in the number of cells adsorbed on supports made from peanut and hazelnut shells. The efficiency of bacterial immobilization was in 1.5 and 3 times higher than the initial one for supports made of peanut and hazelnut shell accordingly.