Studies on pervaporative characteristics of bacterial cellulose membrane

Abstract. Pervaporation, a membrane-based technique, is taken into consideration in order to separate water from biodiesel-methanol mixtures. Several operational conditions in biodiesel production could cause water contamination into the reaction mixture, which can affect biodiesel production and quality. In this study, bacterial cellulose-alginate (BCA) nanocomposite film was applied as a selective membrane in order to separate water from biodiesel-methanol mixtures using pervaporation. For effective operation, factors that affected the performance in the pervaporation, such as concentration of water in the biodiesel-methanol mixtures and temperature of the process were investigated. It was demonstrated that, the BCA membrane has good potential for removing water from the biodiesel-methanol mixtures. Under a permeate pressure of 10 mmHg and 30 °C, the BCA membrane could separate water from the mixture containing methyl ester (C10:0): methanol: water at a weight ratio of 42.3: 52.7: 5 with a total permeate flux of 148 g/(m 2 h) and a water selectivity of 332. The permeate was contained 94.5% w/w water and methyl ester was completely rejected by the BCA membrane. The increase of water concentration in biodiesel-methanol mixtures and the temperature rise resulted in an increase in the permeate flux but lowered the selectivity.

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“…5(b). The similar results were previously reported in pervaporation studies of BC and BC composite membranes [20,24,25]. …”

Section: Effect Of Water Content In Feedsupporting

confidence: 90%

Bacterial Cellulose-Alginate Membrane for Dehydration of Biodiesel-Methanol Mixtures

Suratago

Panitchakarn

Kerdlarpphon

et al. 2016

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“…Benefiting from its unique properties, BC has attracted an increased interest in commercial applications over the past few years. Important examples include raw materials for conductive carbon film, products for temporary skin and tissue replacement, separation membrane, calorie-free food such as Coco de Nata, and additives in the production of lattices and paper [20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Carboxymethylated-bacterial cellulose for copper and lead ion removal

Chen

Zou

Yan

et al. 2009

Journal of Hazardous Materials

252

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“…It forms on the surface of a liquid medium at 30-40°C, in a static or dynamic culture containing a suitable microbe like Acetobacter Xylinum. This microbe is a rod-shaped aerobic gram negative bacterium that occurs as a contaminant in vinegar production (Goelzer et al 2009;Dubey et al 2002;George et al 2005;Pandey et al 2005). It feeds and turns the glucose and other suitable organic components into cellulose (Kurosumi et al 2009;Keshk and Sameshima 2005;Keshk 2006).…”

Section: Introductionmentioning

confidence: 99%

The effects of cotton gauze coating with microbial cellulose

et al. 2009

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Microbial cellulose is a pure form of cellulose with widespread applications. It is very applicable for medical usage specially wound dressings due to its high liquid absorbency and hygienic nature. In this study, microbial cellulose formed/ coated on cotton gauze samples during its biosynthesis in a static medium (Hestrin & Scharm) for 6 days by Acetobacter Xylinium. Some essential factors of treated gauze samples, like water absorbency, drying time (water holding time), and amount of vertical wicking were determined and compared with untreated samples. Results showed that cotton gauze coating with microbial cellulose increases water absorbency and wicking ability over 30%, and reduces drying time about 33%. It can be concluded that covering of cotton gauze with microbial cellulose can promote some important characteristics of it specially for wound dressings.

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Studies on pervaporative characteristics of bacterial cellulose membrane

Cited by 41 publications

References 11 publications

Bacterial Cellulose-Alginate Membrane for Dehydration of Biodiesel-Methanol Mixtures

Bacterial Cellulose-Alginate Membrane for Dehydration of Biodiesel-Methanol Mixtures

Carboxymethylated-bacterial cellulose for copper and lead ion removal

The effects of cotton gauze coating with microbial cellulose

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