Efficient decolorization and deproteinization using uniform polymer microspheres in the succinic acid biorefinery from bio-waste cotton (Gossypium hirsutum L.) stalks

► We produced succinic acid from biomass waste cotton stalk. ► We decolorized and deproteinized the succinic acid SSF crude broth by microspheres. ► Polymer microspheres were compared with activated charcoal.