bioresources. com
PEER-REVIEWED ARTICLE
Methods 3ODVPDDSSOLFDWLRQPHWKRG
The wheat straw surface was modified by atmospheric cold plasma in a mixing agent designed to treat particles and other loose materials (Fig. 1). The base consisted of an iron vessel (outer diameter of 415 mm) attached to a rotating platform. At the top, the container was covered with transparent polycarbonate (PC) to close the plasma application environment and to enable visualization of the course of the modification. Inside the container was an eccentrically-positioned cylinder (outer diameter of 110 mm) that was attached to a fixed arm that held it in a stable position relative to the bowl.
Fig. 1. Side view of the set-up of the stationary plasma aggregate with designed mixing agent The plasma beam was generated by a high-voltage discharge from the FG 1001 generator (PlasmaTreat GmbH, Steinhagen, Germany) with a maximum output of 1000 VA, and it was distributed to the surface of the particles using compressed air (2 bar). Cold air plasma generated at atmospheric pressure was used. The rotary system of the nozzle of plasma aggregate RD1004 (PlasmaTreat GmbH, Steinhagen, Germany) with the standard AGR 131A (25°) nozzle produced a conical beam shape. To compare the effect of the treatment on wheat-straw using plasma, two variants of surface treatment and one reference variant without treatment (R) were proposed. The variants of plasma application are shown in Table 1. Table 1. Variants of Plasma Modifications Voltage (Generator Set Up) Current (Generator Set Up) Modification A 26.9 V 6.9 A Modification B 28.6 V 8.7 A
5067
Hýsek et al . (2018). “Cold plasma & straw board,” B io R esources 13(3), 5065-5079.
Made with FlippingBook Ebook Creator