Biomechanical pulping of wheat straw treated with complex biological enzymes
Pulp and paper industry is faced with many problems,such as difficult pollution control,less raw material supply and high energy consumption.This paper conducts experiments to study the compounding of three biological enzymes for pulping,using a combination of biological pulping and mechanical pulping.At the same time,two enzyme preparation treatments are designed to utilize agricultural waste wheat straw and improve the pulping process after pulping into paper.The paper performance was tested and it was found that compared with simple mechanical pulping and primary enzyme treatment,the secondary biological enzyme treatment improved the paper-forming effect.Compared with untreated straw,the tensile strength is nearly doubled,the tear strength is increased by 36.5%,and the water retention value is increased by 78.8%.