Study on the efficiency and recyclability of Fenton-MnFe2O4 for the degumming of hemp fibers

Abstract Traditional alkali degumming (TAL) has been widely used for hemp degumming; however, the produced degumming waste liquid pollutes the environment. For this phenomenon, an improved Fenton oxidation degumming process was developed in this study, that is, MnFe2O4 (Fenton-MnFe2O4) was added to the Fenton system. The purpose was to reduce the reaction time and the addition of chemical reagents, and reuse the added MnFe2O4. The effects of the Fenton-MnFe2O4 system on fiber properties (such as residual gum rate, and breaking