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

Abstract

Sudan has rich sources of lignocellulose materials from agricultural waste that have potential to be used as a papermaking furnish following adequate chemical compositions, elemental analysis, fibre dimensions, and morphology of millet stalks and date palm leaves. Paper sheet properties from the various pulps made were investigated, and it was found that there was no difference in the polysaccharide (cellulose and hemicelluloses) content between millet stalks and date palm leaves, although millet stalks had a high lignin content of 18.20% relative to date palm leaves' content of 15.34%. Moreover, millet stalks showed a high pulp yield (42.04%) with a viscosity of 665 mL/g compared to that (34.43%, 551 mL/g) and (38.50% and 534 mL/g) of date palm leaves and the blend, respectively. Papers produced from date palm leaves and millet stalk blends showed better physical properties compared to that of pure millet stalks and date palm leaves. The Scanning Electron Microscopy (SEM) analysis showed that fibres in the blend were more closely packed than that of the pure millet stalks and date palm leaves fibers. Based on their physical and chemical composition properties, millet stalks and date palm leaves have a high potential as a furnish for pulp and papermaking.

Sudanese Dicots as Alternative Fiber Sources for Pulp and Papermaking

“…Many studies have been carried out to fi nd new alternative lignocellulosic materials. Some of these studies have used tobacco (Shakhes et al, 2011a), rice straw, sugarcane bagasse and cotton stalk (Adel et al, 2016), pineapple (Wutisatwongkul et al, 2016) millet stalks and date palm leaves (Saeed et al, 2017b), J. procera (Nasser et al, 2015), sunfl ower stalk (Barbash et al, 2016) gracilaria and eucheuma (Machmud et al, 2013), bitter orange (Tutuş et al, 2016), ipomea carnea and cannabis sativa (Dutt et al, 2008), c. orientalis and c. tataria (Tutus et al, 2010), wheat straws (Espinosa et al, 2016) and broad bean, bell pepper and asparagus (Gonzalo et al, 2017). However, there is no previous study on the application of castor bean (Ricinus communis) and Leptadenia pyrotechnica (L. pyrotechnica) stems for pulp and paper production.…”

“…REZULTATI I RASPRAVA Chemical composition and extractives of castor bean and L. pyrotechnica in comparison with some common representatives of lignocellulosic annual plants are shown in Table 1. Castor bean and L. pyrotechnica show a relatively high cellulose content of 46.20 % and 44.30 %, respectively, compared to prunus amygdalus (Mechi et al, 2017), A. armatus(Ferhi et al, 2014a) vine stems(Mansouri et al, 2012) and bagasse(Saeed et al, 2017a), but lower than that of I. tinctoria(Comlekcioglu et al, 2016), cactus(Mannai et al, 2017) and similar to that of palm leaves(Saeed et al, 2017b). On the other hand, L. pyrotechnica show a higher amount of hemicellulose (22.15 %) compared to castor bean value of 20.50…”

The Emergence of a Sustainable and Reliable Supply Chain Paradigm in Supply Chain Network Design

“…Companies typically use these guidelines to report and monitor developments on sustainable issues because of their ease of use and comprehensiveness [196]. Regulatory pressures and market pressures are the most important factors in implementing supply chain sustainability [197]. Moreno-Camacho et al, after identifying the sustainability assessment indicators used in 113 articles on SCND in the period 2015 to 2018, stated that 96.5% of the articles focused on environmental issues and 45.2% on social issues [198].…”

An approach for application of ozone bleaching and nano‐filler loading on quality of papermaking from sorghum bagasse as a promise alternative non‐wood fiber

“…So, the whole world requires urgently searching for new resources of fibrous raw materials and in this respect, non-wood and recycled fibers have in fact a great chance to replace wood fibers in pulp and papermaking. 4,5 Currently, non-wood fibrous raw materials have become one of the most important alternative resources 6,7 especially for developed countries that have no forests.…”