Sugarcane Bagasse
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2021 ◽  
Vol 12 (1) ◽  
pp. 230-242
Author(s):  
Henry Okwudili Chibudike ◽  
Nelly Acha Ndukwe ◽  
Eunice Chinedum Chibudike ◽  
Nkemdilim Ifeanyi Obi ◽  
Olubamike Adetutu Adeyoju

Pulping trials were carried out using MEA and the soda process comparing their pulping potentials. The operating conditions such as the concentration of the cooking liquor (50%, 75%, 100%) for MEA and (10%, 15%, 20%) for NaOH, the maximum cooking temperature (150oC, 160oC, 170oC) and cooking time (60, 90, 120minutes) for both processes were investigated systematically to establish optimal pulping conditions. The agro-biomass used in this investigation is Sugarcane Bagasse viewed as alternative raw material for pulp and paper production. The lignin content of Bagasse (19.5%) was low; indicating that Bagasse should be easier to pulp. The optimum cooking conditions (independent variables) for MEA pulping were 75% MEA concentration, 150oC cooking temperature and 90 minutes cooking time. Excel 2013 was used to analyze the effect of independent variables on yield of bagasse pulp and properties of furnished paper from MEA process in comparison with the Soda process which include tear index, tensile index, burst index and folding endurance with errors less than 15% in all cases. The Kappa number range (12.7-16.9), viscosity (270-870 ml/g) and brightness (62.1-93.2%) of bagasse pulp are appropriate for high-brightness printing and writing papers. The physical properties of furnished paper, tear index (13.4 mN.m2/g), tensile index (71Nm/g), Burst index (4.8 KN/g) and folding endurance (82) recommend the cellulosic pulp from Sugarcane Bagasse obtained from the MEA process for strengthening the virgin fiber in recycled papers and also for developing certain types of printing and packaging papers. Due to the awareness towards the negative impact of kraft mill’s effluent to the environment recently, soda pulping started to regain its popularity among the pulp mills especially non-wood based pulp mills. MEA process is more economically attractive given its high pulp yield, despite the significant increase in chemical demand for bleaching. MEA pulping is a good alternative to soda pulping furnishing high pulp yield with less cooking temperature, i.e. 150oC, thereby saving a considerable amount of energy with less odoriferous pollutants and pollution load associated with the soda process.


2021 ◽  
Vol 9 (6) ◽  
pp. 106513
Author(s):  
Vanessa O. Nunes ◽  
Adriano C. Fraga ◽  
Raquel V.S. Silva ◽  
Nathália S. Pontes ◽  
Andrea R. Pinho ◽  
...  

2021 ◽  
pp. 096739112110490
Author(s):  
Ruey Shan Chen ◽  
Yao Hsing Chai ◽  
Ezutah Udoncy Olugu ◽  
Mohd Nazry Salleh ◽  
Sahrim Ahmad

Enormous amounts of plastic wastes are generated worldwide and the approaches related to plastic recycling or reusing have become the research focus in the field of composite materials. In this study, green composites were prepared via melt-blending method using high-density polyethylene (HDPE) sourced from plastic bags as a matrix and sugarcane bagasse (SCB) fiber as reinforcing filler. The effects of fiber loading (5, 10 and 15 wt%) and fiber modification on the mechanical and dimensional stability (weight gain by water absorption) properties of the green composites were investigated. Results showed that the inclusion of SCB fiber into recycled HDPE matrix increased the composite stiffness but decreased the mechanical strength and resistance to water absorption. With the fiber modification through alkali treatment, the mechanical strength was remarkably improved, and the modulus and water absorption of the composites were found to be reduced. From the finding, it can be concluded that the prepared green composites free of coupling agent could add value to the plastic and agricultural wastes, and serve a potential candidate to replace some conventional petroleum-based composites.


2021 ◽  
Vol 173 ◽  
pp. 114108
Author(s):  
Qinghua Ji ◽  
Xiaojie Yu ◽  
Peiwen Wu ◽  
Abu El-Gasim A. Yagoub ◽  
Li Chen ◽  
...  

Author(s):  
Romina Coniglio ◽  
Gabriela Díaz ◽  
Cinthya López ◽  
María Restelli ◽  
Emanuel Grassi ◽  
...  

2021 ◽  
Vol 10 (13) ◽  
pp. e80101320878
Author(s):  
Ana Maria Gonçalves Duarte Mendonça ◽  
Osires de Medeiros Melo Neto ◽  
John Kennedy Guedes Rodrigues ◽  
Robson Kel Batista de Lima ◽  
Ingridy Minervina Silva ◽  
...  

Sugar industry waste bagasse contains many natural fiber materials, and the application of natural fibers in asphalt mixes such as SMA (Stone Matrix Asphalt) has become an attractive alternative for the construction of flexible pavements. This study aims to evaluate the mechanical performance of an asphalt mixture modified by incorporating 0.3% sugarcane bagasse fiber and with a size of 20 mm. The asphalt binder was submitted to penetration, softening point, and rotational viscosity tests to carry out this research, and the aggregates were characterized by specific mass, particle size, and absorption tests. Furthermore, the Superpave dosage was performed to produce the specimens to be evaluated in the splitting tensile strength test, resilient modulus, Marshall stability, and draindown sensitivity. As a result, the modified asphalt mixture presented a better performance in all evaluated strength tests and the leakage content within the standard specifications. Therefore, according to this, re-search, sugarcane bagasse fibers proved to be a viable alternative for SMA-type mixtures. Thus, the application of this material in asphalt paving and improving some essential characteristics can significantly reduce the environmental impacts generated by the inadequate disposal of these residues by sugar mills.


Author(s):  
Parisa Mehrabinia ◽  
Elham Ghanbari-Adivi ◽  
Rohollah Fattahi ◽  
Heshmatollah Samimi-Shalamzari ◽  
Jalil Kermanezhad

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