| As people’s awareness of environmental protection and their requirements for comfort have increased,hemp textiles have gradually attracted people’s attention.It is of great significance to study more efficient,energy-saving,and environmentally friendly pretreatment methods.In this study.An electrochemical method was used to prepare a chemically active aqueous solution,Analyze the basic properties and stability of the electrolytic solution by testing the oxidation-reduction potential,apparent active material content,hydrogen peroxide concentration,etc.Studies have found that the prepared active water has a higher apparent active substance content and hydrogen peroxide concentration,as well as a longer-lasting chemical activity retention ability.In this study,activated water was used for the hemp fiber degumming and bleaching treatment,and the process parameters of the activated water treatment of hemp fiber were optimized.The optimized process obtained was: room temperature,bath ratio 1:50,and soaking time 30 min.The study found that active water has significant degumming and bleaching effects on hemp fiber,and the test results of residual gum rate and whiteness are better than those of traditional chemical treatment.The fibers with different degumming treatments were characterized by FTIR,SEM,XRD,TG-DSC,and Raman spectroscopy.The results showed that the active water treatment effectively removed impurities such as pectin,lignin and hemicellulose in the hemp fiber,The crystallinity of the treated fiber is improved.In this study,water quality analysis of BOD,COD,AOX,TOC and other indicators was carried out on the wastewater after the degumming of active water.The results obtained provide reference for follow-up research and related enterprise applications.In this study,the degumming wastewater was electrolytically regenerated and continued to be used for the degumming of hemp.The study found that active water has the potential for recycling and reuse of waste water from hemp degumming treatment.Compared with the traditional chemical degumming method,the degumming method based on the active water produced by the electrochemical method in this subject research has the advantages of degumming and bleaching in one step,simple operation,no strong acid,strong alkali,etc.It is a kind of low energy consumption.Low emission,environmentally friendly hemp fiber degumming method. |
