Synthesis of Industrial Raw Material from Cellulosic Agricultural Wastes. Simply put it looks at business inputs and outputs and visually explains the resulting process within a business.
1 CHAPTER II Introduction Sodium carboxymethyl cellulose NaCMC or only CMC is water soluble cellulose ether which permits the preparation of water solutions with a viscosity which may vary between a few mPasec and several thousand mPasec.
Carboxymethyl cellulose process flow diagram. Accurately weigh 10 g of the sample into each of 4 vials add 05 ml of internal standard to each and add 0 02 04 or 06 ml of the 11000 standards to one of each vial. Focus on Carboxymethyl Cellulose. The product is then washed and dried.
Thermoplastic carboxymethyl cellulose TCMC Chemical Engineering Journal vol. Cross-linked sodium carboxymethyl cellulose is manufactured by acidifying an aqueous suspension of sodium carboxymethyl cellulose and heating the suspension to achieve cross-linking. The molecular mass of one glucose unit in CMC chain is.
Sodium carboxymethyl cellulose NaCMC is used in the textile oil-and-gas ore beneficiation construction and food industries. Synthesis of carboxymethyl cellulose from waste of cotton ginning industry. By product of sodium glycolate formulation occurs according to C1CH2 CooNa NaOH.
The aged alkali cellulose is then reacted with CS 2 to form sodium cellulose xanthate. Carboxymethyl cellulose C6H7OOH3 xOCH2COOHxn is a derivative of the regenerated cellulose C6H10O5n with hydroxy-acetic acid hydroxy ethanoic acid CH2OHCOOH or sodium monochloroacetate ClCH2COONa. BPMN diagrams are flowcharts built using the Business Process Model and Notation system to lay out how business processes flow.
The first step is activation of cellulose with an aqueous NaOH in the slurry of an organic solvent. The quality of raw material used in carboxy methyl varies with the purification of the process. The rheological properties of the Carboxymethyl cellulose used were determined in circular pipe flow using an Ultrasound Pulsed Doppler Velocimeter combined with the Pressure Difference method UPDVPD.
Farahnaky A new study on the steady shear flow thermal and functional properties of beet pulp carboxymethyl cellulose Journal of Food Processing. The carboxymethyl cellulose production cost analysis report covering supply chain analysis primary process flow raw material requirements operating cost capital Investment industry trends and revenue statistics manufacturing process reactions involved and operating and capital costs. Carboxymethyl cellulose fibers are manufactured by reacting a starting cellulose with an alkaline solution containing an etherifying agent dissolved therein while the cellulose is filled in a reactor and the solution is circulating by a pump so as to come into continuous contact with the cellulose.
CMC has the following formula. The CMC fibre is manufactured by reacting a starting cellulose with an alkaline solution containing an etherifying agent dissolved in the solution while the cellulose is filled in a reactor and the solution is circulated by using a pump to ensure continuous contact of the solution with cellulose. The carboxymetylation of cellulose is a two step process and is accompanied by a undesired side reaction Rajput Pandey Joshi 2015.
The amount of time for the aging step is based on the desired cellulose chain length. Carboxymethyl cellulose Production by Dawood university students. The process of obtaining sodium carboxymethyl cellulose from cotton cellulose is discussed.
The flow rate of circulation of the alkaline reaction mixture should preferably be greater than 10 Lmin per 1 kg of cellulose. The main chemical reactions of sodium carboxymethylcellulose are alkalization reaction of cellulose with alkali to generate alkali cellulose and etherification reaction of alkali cellulose with monochloro acetic acid. By Zahara Ayu Madina.
If playback doesnt begin shortly try restarting your device. In this work extended mercerization stages were used when producing CMC from a spruce dissolving pulp. Alkaline extraction and carboxymethylation of xylans from corn fiber_Cellulose_2019pdf.
Due to its characteristic surface properties mechanical strength tunable hydrophilicity viscous properties availability and abundance of raw materials low-cost synthesis process and likewise many contrasting aspects it is now widely used in various advanced application fields for example food paper. Very few industrial units at present are employed in the. The aim of this work was to investigate aqueous solutions of Carboxymethyl cellulose CMC.
It is also produced during the manufacture of sodium carboxymethyl cellulose by lowering the pH and heating to cause cross-linking. Sodium Carboxy Methyl Cellulose prescribes requirement and the method of sampling and test for water. Their rheological properties and pipe flow behaviour in circular cylinder were studied.
The alkali cellulose is aged to decrease the degree of polymerization of the cellulose. The second step is reaction of cellulose with Na salt of chloroacetic acid. Carboxymethyl Cellulose HKS.
Carboxymethyl cellulose CMC is produced commercially in a two-stage process consisting of a mercerization stage followed by an etherification stage. Add sufficient buffer to bring the total volume in each vial to 15 ml. The CMC backbone consist of D-glucose residues linked by -14-linkage.
Conceptual and processing-equipment diagrams are presented. The technological process and used equipment are described. Cap and place vials into the heater.
Carboxymethyl cellulose CMC is one of the most promising cellulose derivatives. Figure 2-1 illustrates a generic process flow diagram for the viscose category.