Molasses as a new additive in papermaking: For Bagasse and Kaolin Filled Bagasse pulps (original) (raw)
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Molasses as a new additive in papermaking: for high alpha-cellulose wood pulp
2007
The present work introduces, for the first time worldwide, molasses as an additive in papermaking. The resulting paper composites exhibit greater breaking length and remarkably higher water uptake (WRV) in comparison to paper, which did not involve molasses as an additive. Previous studies, by the author and others, have shown that incorporating the cell wall microstructure of cellulose fibers with sucrose greatly enhanced the breaking length and water uptake of paper. Also, it is well established in the literature that using gums (including starch) as additives in papermaking enhances the strength of paper. Molasses contains both sucrose and gums (including starch). Molasses is a byproduct of sugar industry, which is cheaper than sucrose; and a major part of sucrose lost in sugar industry resides in molasses. Therefore, molasses was chosen as a new additive in this work. The effect of mercerization of pulp fibers before loading them with molasses is, also, studied in this work; and mercerization is shown to greatly enhance the positive effects produced by loading with molasses. Paper composites produced in this work find their use as specialty absorbent paper. The present work shows that the benefits obtained by using molasses are close to the benefits obtained in the case of using the more expensive additive sucrose.
Introducing molasses as a new additive in papermaking
2007
This study introduced, for the first time worldwide, molasses as an additive in papermaking. The introduction of molasses as an additive in papermaking resulted in paper composites with greater breaking length and remarkably higher water retention value (WRV), compared with paper that does not have molasses as an additive. Previous studies have shown that incorporating the cell wall microstructure of cellulose fibers with sucrose greatly enhanced the breaking length and WRV. It is well established in the literature that using gums (including starch) as additives in papermaking enhances paper strength. Molasses, which contains sucrose and gums (including starch) is a byproduct of the sugar industry and is cheaper than sucrose. Mercerization of pulp fibers before loading them with molasses was shown to greatly enhance the positive effects produced by loading with molasses. Application: Paper composites produced using molasses as an additive are useful as specialty absorbent paper.
Composites Part B: Engineering, 2013
The objective of this study was to evaluate the ability of molasses, a low cost by-product of the sugarcane extraction, for improvement of the physicomechanical properties of old corrugated container (OCC) recycled paper as a dry-strength agent. The influence of fiber beating on the enhancing effect of molasses was also investigated. Five dosages (0%, 5%, 10%, 15%, and 18%) of molasses and 3 levels of freeness (420, 400, and 320 mL CFS) were used as variable factors. For each treatment, 6 handsheets, each having an area of 200 cm 2 and basis weight of 120 g/m 2 , were made. The experimental results showed that except for the case of tear index, the increase in mechanical and physical properties were considerably higher than control (untreated) samples. Significant changes of tensile and burst indices, breaking length, and air resistance were observed after the addition of 18% molasses. From a statistical viewpoint, the addition of molasses had more positive effects on the above-mentioned properties, compared to the fiber beating. However, at a certain dosage of molasses, with increased beating, the strength properties were improved remarkably. This is due to the molasses adsorption efficiency, which depends on the specific surface of particles. The water retention values (WRV) were moderately increased by applying molasses, however with increasing dosage the WRV was improved. From these findings, it is concluded that molasses is a promising dry-strength agent and it can also be used as a replacement for cellulosic fibers. This conclusion is in good agreement with the previous research articles, which introduced molasses as a new additive in papermaking.
The Usage of Bagasse Pulp for Wood Fiber Substitution in Papermaking
JURNAL SELULOSA, 2016
Penelitian pulp bagas virgin dan bagas pasaran sebagai bahan baku pembuatan kertas tisu gramatur 17 g/m 2 , kertas HVS 56 g/m 2 , dan karton BC 210 g/m 2 dalam rangka substitusi serat LBKP dan NBKP telah dilakukan. Kertas tisu MG yang dibuat di PM4 pada kecepatan 3,2 % lebih rendah dan 6,7 % kapasitas lebih rendah ternyata mampu mensubstitusi seluruh porsi LBKP (60%) tanpa efek negatif pada sifat fisik kertas. Kertas HVS dibuat di PM5 pada kecepatan 4,3 % lebih rendah dan kapasitas 1 % lebih rendah ternyata mampu meningkatkan indeks kekuatan, indeks tarik, dan indeks sobek, serta mengurangi porositas hingga 800 ml/mnt. Karton BC dibuat di PM2 pada kecepatan dan kapasitas yang sama ternyata mampu mensubstitusi porsi LBKP (40-80 %) dan NBKP (10-20 %) tanpa pengaruh negatif pada sifat fisik. Tetapi sifat BC masih berada diantara batas bawah dan batas atas BC komersial, meskipun ada penurunan tajam pada indeks kekuatan dan ketahanan lipat dibandingkan dengan BC yang menggunakan 20-30 % NBKP. Kata kunci : pulp bagas, indeks tarik, indeks kekuatan, indeks sobek, porositas
Ecology, Environment and Conservation, 2022
Present research work focused on sugarcane bagasse powder having potential cellulose source which can be used in pulp and paper industries. Ecological concerns have increased the need for nonwood pulp as a low cost raw material for paper making. This also led to the development of alternative pulping technologies that are eco-friendly. Cellulose pulp from the generated agro based waste is collected from the street vendors and chemically prepared in the laboratory and used in paper making. The optimal cooking time and dose of pulp by moist weight found were 180 minutes & 150 g of pulp per frame, respectively. To improve the quality and the shelf life of paper we incorporated sucrose in the sugarcane pulp. Sucrose acts as a natural preservative. To study the effect of sucrose as preservative we prepared a solution of sucrose and distilled water in 1:4 ratio. The solution is then mixed with sugarcane bagasse in 5:250, 10:250, 15:250 and 20:250 and observed the OD of the mixture on 20th...
Pulp and paper production from sugarcane bagasse
The pulp and paper industry is very large and is now well in excess of 200billion(FAO2009).Estimatesfortheamountofbagasseusedintheproductionofpulpandpaperproductsvarybutthegeneralconsensusisthatitaccountsfor2–5200 billion (FAO 2009). Estimates for the amount of bagasse used in the production of pulp and paper products vary but the general consensus is that it accounts for 2–5% of global production, making it one of the highest revenue earners for the global sugarcane industry. Currently, there are believed to be around 30 countries that use bagasse for paper manufacture. The paper industry remains a growth industry globally, with volumes forecast to increase 50% by 2035 (i.e., an additional 200 million tons) with most of the growth occurring in the packaging and tissue sectors. The growth will occur in emerging economies as the other economies will have net negative growth of 33 million tons by 2035 (Wilson 2013) amidst the rapid decline in newsprint consumption. As the growth is occurring in emerging economies, which constitutes the entirety of the bagasse-based paper sector, it is reasonable to presume that bagasse will grow in importance as a paper feedstock. Bagasse is used for each of the four main paper categories, namely packaging and boxes, printing, writing and photocopier paper, tissues, and newsprint. Both chemical and mechanical pulping processes are used, and these processes are described in separate sections. This chapter focuses on the considerations for bagasse-based pulp and paper manufacture with only a broad overview of the general wood-based process. Numerous comprehensive texts have a more in-depth analysis of the science of pulp and paper manufacture (Smook 1992, Gullichsen and Fogelholm 1999, Paper Engineers Association 2007–2010). Modern paper manufacturing is a highly capital-intensive industry. Wood-based chemical pulp mills typically cost in the order of billions of dollars, and cheaper mechanical pulp mills are in the order of 200billion(FAO2009).Estimatesfortheamountofbagasseusedintheproductionofpulpandpaperproductsvarybutthegeneralconsensusisthatitaccountsfor2–530–200 million. Although bagasse-based pulp mills are generally substantially smaller and cheaper than the large wood-based chemical pulp mills owing to the relatively mild pulping conditions, they are still a sizable investment. 10.2 History of bagasse in the pulp and paper industry The first continuous paper machine was developed around the year 1800, allowing large quantities of paper to be produced for the first time. At this time, paper was produced from retired fabric, and its availability was becoming increasingly scarce as paper production grew.
Production of Pulp and Paper from Bagasse
In this project sugarcane bagasse was investigated for the potential ofproducing pulp and paper. Experimentally Sudanese Bagasse is pulped applying the soda chemical pulping process. Using an alkali charge of 12.4% Na 2 O for 140 minutes cooking time at maximum temperature of 160ºC, the screened yield obtained was 50.1% which is acceptable.The unbeaten pulp has shown freeness of 16 SR while beaten pulp for 5min was 37 SR and for 10min has given 44 SR this shows the increase of SR with beating time. This indicates that the drainability of pulp increases with beating.Samples of paper were made from the pulp and tested. The testes show that the brightness and the thickness decreased with the beating time while the tensile index, the burst index and weight increase.The Sudan can be considered as one of the most suitable countries for manufacturing paper and pulp because of the availability of raw material. It is recommended to investigate establishing a paper factory in Sudan because all the possibilities are available.
Carbohydrate Polymers, 2014
This study explores the benefits of using bagasse microfibrillated cellulose (MFC) in bagasse paper. Two different types of MFC were produced from DED bleached soda bagasse pulp. The MFC was added to soda bagasse pulp furnishes in different amounts. Cationic polyacrylamide (C-PAM) was selected as retention aid. The results show that addition of MFC increased the strength of paper as expected. Interestingly, 1% MFC in combination with 0.1% C-PAM yielded similar drainage time as the reference pulp, which did not contain MFC. In addition, the samples containing 1% MFC and 0.1% C-PAM yielded (i) a significant increment of the tensile index, (ii) a minor decrease of opacity and (iii) preserved Gurley porosity. Hence, this study proves that small fractions of MFC in combination with adequate retention aids can have positive effects with respect to paper properties, which is most interesting from an industrial point of view.
Environmentally friendly pulping and bleaching of bagasse
Industrial Crops and Products, 2006
Depithed Sudanese bagasse was examined for its suitability for pulp production. Bagasse fibre dimensions, morphological and chemical characteristics are reported. The pulping trials were carried out with soda-AQ and alkaline sulphite-AQ (AS-AQ) methods and soda method as reference. The AS-AQ pulping gave the best results in yield, degree of delignification, mechanical and optical pulp properties. Blending of bagasse and bamboo alkaline sulphite-anthraquinone pulps in different ratios gave well-balanced pulp strength characteristics with good tensile and tear indices, widening the range of different end products from bagasse pulp. Totally chlorine free bleaching (Q 1 O/PQ 2 P) of the best unbleached bagasse pulps gave bleached pulps of 76.9% ISO brightness, suitable for use in writing and printing grades of paper.