This study aimed to manufacture particleboards from Casuarina cunninghamiana (C), Eucalyptus camaldulensis (E), and Pinus halepensis (P) trees irrigated with treated wastewater and their mixtures (E-C, E-P, and C-P) with 50%:50% for each individual raw material. Two urea formaldehyde resin levels (9% and 13%) were used. Modulus of rupture (MOR), modulus of elasticity (MOE), and internal bond strength (IB) as mechanical properties and physical properties (water absorption and thickness swelling) were determined. The C-P panels with 9% and 13% resin levels showed the best mechanical and water resistant performance. All the 13% panels satisfy the minimum requirement of the European standard for the MOE, MOR, and IB except for the MOE of (P) panels, which was very close to the recommended value. The mixtures improved the water absorption and thickness swelling compared with the other produced panels especially for the 13% resin content panels. The (E-C) with 9% resin content showed the lowest mechanical properties and water resistance values. The three furnish types and their mixtures showed its suitability for particleboard production using the board processing conditions specified in this study.
The objective of this study is to measure and evaluate the suitability of two types of reed, namely giant reed (Arundo donax) and common reed (Phragmites australis) as non-woody raw materials using soda-anthraquinone (AQ) pulping process for pulp and paper industry. Two fractions of reed were used to produce experimental papersheets. The two fractions are woody stem and whole plant including woody stem, leaves, and sheathes. The biometric characteristics, such as extractive solvents, chemical, morphological properties, and physical properties in addition to some strength properties of the papersheets made from these resources were measured. The results indicated that P. australis had the highest contents of cellulose, hemicellulose and ash were 53.5%, 33.9% and 3.9%, respectively while the lowest lignin content value was 13.6%. Fiber length of both types of fiber length were also determined as 1800μm and 1400μm. The derived Runkel ratio and flexibility coefficient for P. australis were also determined as 1.25, 61.4, respectively. Overall strength properties of pulp and papersheets made from the two reed types were significantly different from each other. Based on the results of this study, it appears that both types of reed, giant reed and common reed could have a potential to be used as an alternative raw material for pulp and paper production with accepted properties.
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