abstract
The objective of this study was to characterize the properties of pulp and paper manufactured from two agricultural residues namely, wheat straw (Triticum aestivumL. em Thell.)
and date palm midribs (Phoenix dactyliferaL.) widely available in Saudi Arabia by employing soda-anthraquinone (AQ) pulping process. Specimens from cedar wood (Juniperus
proceraHochst. ex Endl.) wood was also used as control samples. Chemical and the morphological characteristics of all three types of raw materials in addition to basic properties
of hand sheets made from such resources were evaluated. The results indicated that wheat
straw had the highest hemicellulose and ash values of 35% and 7% and the lowest lignin
content value of 18%, respectively. The fibre length of the both palm fronds and wheat
straw was lower than that of 2.2 mm which was found forJ. procera. Overall strength properties of the handsheet made from two agricultural raw materials were significantly lower
than those made fromJ. procerapulp. Wheat straw handsheets also had higher strength
properties than those made from date palm midribs with an exception of their tear index.
Based on the results of this study it appears that both types of raw materials, date palm
midribs and wheat straw could have a potential to manufacture pulp and paper with
accepted properties so that such underutilized species can be converted into value-added
products