The Properties and Application of an Ultrasonic-Assisted Wheat Straw Pulp having Enhanced Tendency for Ash Formation

Abstract

Ultrasonic-assisted pulping technology integrates pulping and bleaching processes in one reactor with good yields performance of approximately 60% to 70%. The properties of ultrasonic-assisted wheat straw pulp were compared, i.e., composition, strength, and whiteness, with those of other conventionally pulps. The ash content of ultrasonic wheat straw pulp (the content is 27.81%) was much higher than that of traditional wheat straw pulp (the content was approximately 15%). Upon comparison with the ash content of the raw material, X-ray diffraction analysis, and thermogravimetry, the authors believe that some heat-resistant material was produced during the ultrasonic pulping process. The strength and whiteness performance of ultrasonic wheat straw pulp was better than that of traditional wheat straw pulp and was close to that of reed sodaanthraquinone (soda-AQ) pulp. Offset paper was successfully made using ultrasonic wheat straw pulp.

Ultrasonic-assisted Method of Graphite Preparation from Wheat Straw

“…From the results of the author's previous research (Xing et al 2017), it was demonstrated that many protrusion spherical granular materials were present on the fiber surface of UP, and the pulp had commendable strength performances. Meanwhile, the ash content of UP reached 27.8%, which was far higher than that of the traditional wheat straw pulp.…”

Novel Medium-density Fibreboard Produced by Ultrasonic-assisted Pulp with Superhydrophobic and Flame-Resistant Properties

“…The straw was cut into small pieces (with lengths of 2 cm to 3 cm), and then processed with an ultrasonic-assisted pulping treatment in an ultrasonic reactor (self-made, 5-L volume). The UWP pulping methods were in line with relevant literature (Xing et al 2017). Ethanol, tetraethylorthosilicate (TEOS), and ammonium hydroxide (28% in water) were obtained from the Sinopharm Company (Shanghai, China).…”

“…Compared to the conventional pulp currently on the market, UWP has lower output costs and better strength properties (Xing et al 2017). Meanwhile, fabricating superhydrophobic and flame-resistant surfaces of medium-density fibreboard also form an important link to overcome the drawbacks of the hydrogen bonds, which easily lose efficacy when contacted with water.…”

Sudanese Agro-residue as a Novel Furnish for Pulp and Paper Manufacturing

“…An increase in pulp and paperboard consumption, stricter environmental and sustainability regulations, and the increased use of wood materials for furniture production have prompted scientists and researchers to seek additional lignocellulosic material for pulp and papermaking (Danielewicz and Surma-Slusarska 2011;Xing et al 2016). Globally, non-wood cellulosic materials are a major part of raw material inventories for pulping and paper.…”