Chemical and morphological characterization and pulping of Casuarina equisetifolia

Abstract

Bangladesh is very much successful in coastal afforestation programmes, which protects from frequent cyclones. Casuarina equisetifolia has showed a climate resilient and promising species. No study has been done on industrial application of C. equisetifolia in Bangladesh. In this study, C. equisetifolia was characterized in terms of chemical, morphological and anatomical properties. It is characterized with higher α-cellulose, similar hemicelluloses and lignin as compared to other hardwood species grown in Bangladesh. The C. equisetifolia lignin contained mainly of syringyl unit followed by guaiacyl unit. The fiber of C. equisetifolia was shorter in length with very thick cell wall and narrow lumen, consequently the wood density and runkel ratio were very high (2.89). The C. equisetifolia was also fractionated by formic acid (FA) at atmospheric pressure to pulp, dissolved lignin and hemicelluloses. Pulp yield was 50 % with kappa number of 40 at the conditions of 3 h treatment with 90 % FA followed by 2 h peroxyformic acid treatment. But in the kraft process, C. equisetifolia produced pulp yield of 44 % with kappa number 17. Both pulps showed good bleachability. The papermaking properties were in acceptable range. Finally, it can be said that C. equisetifolia is promising species for pulping.

Valorisation of Underutilized Grass Fibre (Stem) as a Potential Material for Paper Production

“…Undoubtedly, a higher lignin content necessitates a large amount of energy and chemicals [ 34 ]. The presence of lignin is detrimental to the stability of chemical and mechanical paper properties [ 35 ].…”

Evaluation of Erythrina fusca Lour. as a pulping raw material

“…Table 2 shows the morphological properties and its derived values, which are important in assessing the suitability of fibrous raw material for pulping. The fibre length of E. fusca was 1.11 mm and longer than Casuarina equisetifolia (Sarkar et al 2021) and Acacia auriculiformis (Table 2) and close to typical hardwood (Ferreira et al 2011). A higher tearing strength of paper is obtained from a longer fibre pulp (Gallay 1962).…”

“…Different fast-growing trees such as Acacia auriculiformis, A. mangium , Trema orientalis , Gmelina arborea , etc. have been explored to produce more wood using the same land, and pulpwood quality has also been evaluated (Jahan and Mun 2004, 2011; Haque et al 2019; Sarkar et al 2021; Sharma et al 2021).…”

Extraction and characterization of a newly developed cellulose enriched sustainable natural fiber from the epidermis of Mikania micrantha

“…The Klason approach was used to calculate the proportion of lignin applied (TAPPI T211 om-83). According to the TAPPI (T211 os-76) test technique, the ash content was assessed [ 19 ]. There were two replications.…”